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Tech Tuesday - Rotor Straightening
Sep 27, 2011
Mike Levy
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The argument against using tools:
There are a few different companies out there who manufacture tools made specifically to straighten rotors, simply pinching the rotor and acting as a lever to allow you to bend it easier. Some are designed to be used two or three at a time, with one or two holding a section of the rotor in place while the remaining tool acts as the lever. There is even a feeler gauge that allows you to see exactly how far the rotor is out, but nothing works as good as using your bare hands.
There are a few issues with using metal levers (
this includes crescent wrenches as well
) to straighten rotors, but the first is how easy it is to actually bend the rotor while using these tools. That isn't a good thing? Nope, especially for the home mechanic who might not be doing this repair that often. The extra leverage allows you to very easily bend the rotor too far, making the problem worse than it was when you started the repair. While it would be easy to blame the mechanic and not the tool, some bent rotors only require the slightest amount of force to straighten and some require much more, but a rotor tool can make it difficult to feel the amount of force that you are applying. Using your hands will give you a much better feel for what you are doing, allowing you to make smaller adjustments at each go.
Rotor straightening tools are often quite skinny as well, and applying pressuring to a very focused point on the rotor may do more harm than good. It is often much more effective to use your thumbs to spread the force out as you work the rotor back to straight. The worst case scenario is when so much force is applied by using a rotor straightening tool that it actually kinks the rotor where the tool makes contact, instantly turning it into scrap metal.
But aren't your hands dirty?
When was the last time that you cleaned your rotor straightening tools? Your hands have oil on them right now, even if you've just woken up and haven't touched anything yet, which is why you'll want to clean them before doing this job. Getting that oil or grime from your hands onto the rotor will only be detrimental to the performance, so if you are going to try and straighten your bent brake rotor by using your hands you'll want to make sure that they are clean. Very clean. Wash them thoroughly, being sure to rinse off any and all soap that you've used, and then dry them with a towel that you know is clean. Alternately, you can just throw on a new pair of nitrile gloves and be done with it.
Some helpful pointers:
• Much like truing a wheel, this is one of those repair jobs that will only get worse if you try and rush it. Take your time, find the
place where it needs to be straightened and make very small adjustments at each go. You want to avoid bending the rotor too far or doing it in the wrong place, both of which can cause the rotor to have a wave bend where it is out of true to both the left and right. That's when things can start to get tricky...
• While a small to medium gentle bend in a rotor can usually be trued out with great results, sharper kinks are likely going to be a death blow. Having said that, it certainly doesn't hurt to try and straighten anything.
• The rotor may be out of true in multiple spots, but only work on one at a time to keep things simple.
• The edges of a rotor are usually quite sharp. Be careful not to cut yourself!
What's needed:
• Your clean hands (
nitrile gloves help
• A clean rag
• A sharpie
• Brake clean
Step 1.
You first need to identify the exact spot where the rotor is out of true. It is easiest to let the rotor tell you where it's rubbing the brake pads - instead of trying to peer down at the gap between the pads and rotor, listen to the sound it makes when it rubs. You may have to listen carefully, but slowly rotating the rotor through the caliper will tell you exactly where contact is being made.
Step 2.
Use a black marker to indicate the exact position and how long the bend is. Only mark the very top edge of the rotor, not the braking surface. This will make keeping track of your progress much easier, especially if there are multiple locations on the rotor that are out of true. If there are multiple places that need attention, concentrate on one at a time.
Step 3.
If you need to true the rotor by pushing it in towards the bike, wrap your fingers around the spokes and gently push with your thumbs. Go easy, you'll find that not much force is needed to make substantial changes. If the affected area is long, spread your thumbs far enough apart to straighten it. Apply pressure and then turn the rotor through the caliper to see how effective you've been. Repeat as needed.
Step 4.
If the rotor needs to be pulled out away from the bike place one hand at the top of the tire to hold the bike in place and use two or three fingers to gently pull at the rotor. Again, start with only a small amount of force, working your way up to applying only as much pressure as needed.
Step 5.
Even though you washed your hands prior to touching the rotor you should still give it a good spray with a brake cleaner to rinse off any oils. Let it air dry.
Have you tried to straighten a rotor this way? Maybe you have a technique you want to share? Tell us about it below.
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124 Comments
Who Faved
+ 41
(Sep 27, 2011 at 1:04)
My tip would be to take the chain off and then you can hear exactly where and how hard it is scraping - and of course when you've done a perfect job (no noise).
This only applies for when it is the rotor on the REAR wheel
+ 4
(Sep 27, 2011 at 5:49)
good advice!
+ 27
(Sep 27, 2011 at 8:07)
To figure out where the bend on smaller tweaks I use a dry erase marker and draw a single line on the actual braking surface. spin the wheel once or twice, and then the parts that hit the pads are rubbed away, so you can see exactly where and how much needs to be bent and in which direction. Obviously don't go nuts colouring the whole surface, and wash with alcohol immediately apres le repair. works great for the finicky fixes.
+ 7
(Sep 27, 2011 at 9:12)
Hahahah Just imagined a Nyan Cat Running trough the rotor
But it is a quite good idea to mark the rotor!
- 4
(Sep 28, 2011 at 2:26)
(Below Threshold)
show comment
then your wheel is prob on wrong
+ 1
(Sep 8, 2013 at 12:47)
Next time my brakes start playing up they'll play the nyan cat tune!
+ 9
(Sep 27, 2011 at 0:54)
what i tend to do is take the rotor off, lay it on a completely flat level surface, and from there, i can tell which sections are out of true because they're not lying flat.
+ 1
(Sep 27, 2011 at 1:12)
I do the same and take to it with a rubber mallet, but on trail I use my fingers, I'm just happy he uses brake clean, I have been using it since I started riding discs and I was always concerned that perhaps mtb pads deteriorate from this as I never saw anyone else use it. great to know!
- 14
(Sep 27, 2011 at 1:53)
(Below Threshold)
show comment
this is such a cop out from tech tuesday but actually quite useful and I'm always a fan of cavalier repairs
+ 6
(Sep 27, 2011 at 2:28)
Shouldn't you be applying the brake cleaner to a clean cloth, and then the cloth to the rotor, to avoid spraying other parts? Also worth pointing out you need to wipe clean the rotor to remove the brake cleaner residue?
+ 3
(Sep 27, 2011 at 2:33)
indeed makes sense, brake cleaner is highly corrosive and kills the grease on all parts
+ 79
(Sep 27, 2011 at 5:25)
What I do is this:
-1 remove bent rotor
-2 set aside
-3 install new, unbent rotor
-4 hang old rotor on garage wall for decoration
+ 5
(Sep 27, 2011 at 5:35)
i just use 99% iso as it is easier to come by and evaporates nicely
+ 1
(Sep 27, 2011 at 6:25)
so is it okay on organic brake pads? because to be honest I use an auto grade product and douse my caliper while the rotor spins, grey crud comes out and I wipe my rotor with a cloth. My pads wear fast but then I feel that's more to do with my riding and as I generally ride alone I have no one to compare ware rates with. I noticed in the picture above Mike uses a special sram product, does anyone here disagree with an automotive product?
+ 1
(Sep 27, 2011 at 7:52)
Nah I don't disagree with an automotive product as long as it is the right product for the job.
+ 5
(Sep 27, 2011 at 8:36)
It really depends. I work in a automotive repair shop and we have brake cleaner here that melts plastic. You CAN buy less harsh versions of this stuff that will be safe on bikes. But they are not all created equal. Hell, if you have your brake rotor off the bike you can use the agressive product all you like. It wont hurt metal. But as a rule of thumb I do not use automotive products on my bike. Isopropyl Alcohol is all you need to properly clean a brake rotor.
Also, oldfaith, I would not douse the whole caliper like that, especially with brake clean. You risk the cleaner getting into the piston/caliper interface (bore) .......I just dont think its a good idea. Also, it will soak into the pads and the stuff you are using could have ingredients that wont evaporate out.
+ 1
(Sep 27, 2011 at 23:41)
+ 1
(Sep 29, 2011 at 7:54)
Meat hooker! I laughed out loud when I read your comment, that's EXACTLY what I do LOL.
+ 2
(Oct 3, 2011 at 2:57)
okay,, i have been doing this the same way as they said.. sometimes with hard bends.. i took a bacho to fix it..i ride trials with a rear mono trial brake.. my discs get nackered from time to time,.. i would be poor if i had to buy a new rotor each time,..
the brake cleaner is not so good for your brakes.. it DOES leave a residu..(some brands more than others..i found one good brand we have @ work.. it is normally the cheap house brand) i believe in alcohol too which is said above aswell..
since i do not get to high speeds i really feel the deteriorating braking power of using brake cleaner,. (note alcohol does make the brake fade too, but it lasts only a very short time ! ) if you do use brake cleaner.. i found out paper towels work great.. and they are disposable,,.
what i have seen some time ago ..baffled me !
my mate took 2 hammers,,. found the bend in the rotor and using the WOODEN end of one hammer against the disc and hitting the hammer part with the other.. on the lower part of the arms of the disc.. IF i am correct ! if the bend is inwards (to the wheel) hit the out side and vice versa,, he tapped his disc straight in no time,. i practiced it at home with a soon to be replaced hope trial disc.. which i ended up using for 4 months longer or something..cause i got it straight !
it works great.. start with small taps.. dont try to bend the disc arm ! just frighten it and it will return to its original form !
with bend rotor surfaces this does not work.. than use the method as noted somehwere here to.. take rotor off the wheel.. lay it on a flat (glas table !) surface to check the bends..and mark them,, take it OFF the glas table, and whack it straight on a flat piece of wood with a rubber or metal hammer.. note the hammer surface must be clean and smooth !
use a wooden surface so the impact of the hammer can go somewhere,.
+ 0
(Jul 11, 2012 at 7:06)
why would you worry about getting hand oil on your rotors? as long as you wipe it off you'll be fine, besides, im sure a lot worse things get on your rotors and such while your riding.
+ 5
(Sep 27, 2011 at 9:04)
In twenty years of being a bike mechanic, I've trued all kinds of things by hand - chainrings, wheels, rotors, even frames. When something's bent bad enough to need straightening, there's no harm in giving it a go. The important thing is to be honest with the customer, and realistic about the chances of the part staying straight and not breaking. At home there's much less to worry about, because the amount the shop's going to charge you to straighten a rotor will be very close to the price of a new one, unless they do a half-arsed job, which of course you can do yourself. Useless tips:
1 - A clean paper towel obviates the need for cleaning the rotor afterwards
2 - Rotors can have some really strange complex bends. Circular items exhibit more stiffness in the direction of the bend, so learn to feel for that resistance with your fingertips.
3 - Know when to give up. Especially in the shop, I hate to see mechanics spending two hours trying to save a fairly cheap part.
4 - Rotors aren't necessarily straight even right out of the box, so you might end up straightening it even if you buy a new one.
+ 7
(Sep 27, 2011 at 8:51)
Park actually makes a pretty dang good rotor truing fork that works quite well and I use it quite often at my bike shop.
+ 6
(Sep 26, 2011 at 22:15)
Very good tech tuesday, something most home mechanics should know how to do.
+ 2
(Sep 28, 2011 at 11:58)
I like the tips presented but I have to tell everyone to avoid using brake clean, especially automotive brake clean in an enclosed environment. Brake clean is a very toxic substance and is supposed to be used ONLY with full skin protection and supplied air, if you are going to use it please use it outside or find an alternative. I find most citrus degreasers easily clean rotors without the toxic side affects of many brake cleaners, and there are other such products available. We all bike, we all care about our health, so please make sure you read the warning labels on such products before you use them.
+ 2
(Sep 27, 2011 at 3:06)
This was how I've been doing this for years. When I was just researching for some tips in straightening rotors a few years ago, all I could find is how they suggest to use adjustable wrench in bending the rotors. Still, I opted to use just my hands so as not to mar nor overbend the rotors. Glad to know I am not the only one who believes so.
+ 2
(Sep 26, 2011 at 20:46)
This is a very useful tip because rotors go out of "true" (bend) easily, but if you are looking for perfection, your LBS will (should) have a rotor gauge which will give extremely exact numbers for them to tweak it.
+ 1
(Sep 26, 2011 at 20:54)
Exactly. A proper shop with have the tools to get it bang on, but this is really for the home mechanic who might be a bit hesitant to start bending away. Nothing to be scared of!
+ 7
(Sep 26, 2011 at 20:56)
Yeah, especially because if you make a mistake, you can correct it by simply bending it back, you won't screw it up for good.
+ 4
(Sep 27, 2011 at 0:43)
Funny you put this article up because not to long ago I was out riding with some friends and I crashed and ended up tacoing a 6" rotor in the back of my bike (don't ask how it's beyond me haha) so I decide to take my rotor off so that I can keep riding just with my front and I look over and my buddy is trying to be a hero and bend the rotor back haha it was almost bent at a 90° angle... Just goes to show that some people lack the common sense that these articles instill onto others! Great article!
+ 1
(Sep 27, 2011 at 10:00)
Ooooops......just used a crescent wrench and it worked but came out a little squirrely. wish this article came out before i tried to repair - United Airlines bent the crap out my new spendy shimano ice-tech rotor. [ Air Canada didn't on the way up to Whistler ].
Shimano mechanic at last weekends Tara Llanes Classic said same thing - "use your hands first". Shoulda woulda coulda. Got it close enough, but from here i'll be taking Mt-Bike-E's advice - Vice and 2 pcs of Oak. .....And perhaps fewer beers.
+ 2
(Sep 27, 2011 at 17:48)
They also break guitars. expensive taylor guitars
+ 2
(Sep 27, 2011 at 18:02)
+ 2
(Sep 29, 2011 at 23:24)
Funny UA guitar vid.
Just tried straightening the botched rotor again. This time by hand as shown here. Sweetness, success. Thanks Mike Levy @PB!
+ 1
(Sep 27, 2011 at 11:57)
make a small line a the top edge of the rotor surface with a marker, very small.
go ride a round for a few minutes without using your brake,
then you put the bike on the stand. where ever there is no line is where you bend it.
if the line is still there ride more.
works for me, makes it easy to find the spot
+ 1
(Oct 2, 2011 at 13:06)
So first problem you are touching the rotor with your hands which have different oils on it and letting that rotor pass through the caliper so now you run the risk of fowling your brake pads and on an xo brake those run around 30 dollars canadian. Secondly you run the risk of cutting your hand. I would suggest purchasing a park tool DT-2 sprayed with some rubbing alcohol. Admittedly using the tool takes some skill but thats what practice is for. You solution has too many opportunities of running other things and causing more problems.
+ 1
(Sep 27, 2011 at 21:30)
I just want to clarify for everyone he is NOT putting lube on the rotor a the end there. I can't tell you how many people came into the shop I worked at this summer with squeaky brakes that stopped working after they lubed their rotor...
+ 1
(Sep 28, 2011 at 22:11)
all i can say is : if it works using tools - it works ! and if it works using your hands [ or a combination of ] then, it works ! However, i agree that if you are looking to keep the rotor, it may be better to repair it with the 'right' tools and, an emergency repair if it works by using yer bloody teeth or a sledge hammer , then...well, you get my drift :-)
So, assuming everyone is straight up, tools work, and no tools work - moving on......
+ 2
(Sep 29, 2011 at 10:01)
pretty good article, truing rotors is definitely part of the mountain biking game for me. just FYI the mysterious and dangerous oils on your hands (sarcastic) are not going to hurt your brakes
+ 1
(Sep 20, 2012 at 20:42)
I was picking my way down a tight, steep, rocky bit of trail and my right handle bar clipped a tree, and I went down. After I picked myself up and determined there was no damage to my body, I did a cursory check of my bike, and the rear wheel wouldn't spin. My 160mm ice-tech rotor was severely bent. I removed the wheel, and after several unsuccessful attempts at straightening the rotor, I grabbed the top of my tire and with two fingers I pulled as hard as I could on the top of the rotor, and it didn't bend at all. Then I used three fingers. It wouldn't budge. I wrapped a rag around my fingers, and I cranked as hard as I could on the top edge of the rotor where it was bent, but I didn't succeed in bending it back even a millimeter. I had to remove the rotor from my wheel, so I could ride back to the trailhead. It looked to me like the spider arm was bent inward where the bend in the rotor was. I tried to get a Park rotor straightening tool right next to the spider arm and bend the whole thing outward, but the spider arm didn't budge, and the rotor bent, making a mess of things. I can't believe I ever spent $60 on a rotor! In my experience, those rotors aren't easy to bend by hand.
+ 1
(Sep 27, 2011 at 12:55)
Automotive Disc brake cleaners normally contain rust inhibitors. These do not affect the braking force on cars and trucks etc as the heat generated is much higher so they burn off any residue, but can greatly reduce the effectiveness of Disc Brakes on a bicycle.
+ 1
(Sep 28, 2011 at 12:29)
I think a tool is only as good as the hands that drive it, so if you are to use a tool the first time to try to true a rotor, it would be better to use the tool on an already useless rotor to get the feeling of the amount of strengh needed to be applied. There are for sure bends that can not be corrected just by hand, but I agree that Mike's right on suggesting the use of hands for the diy job.
+ 1
(May 8, 2016 at 13:25)
My approach is similar but i dont use brake cleaner. I never had a problem with just clean hands. After i get the rotor almost perfectly straight i try to find a spot with a long down hill track were i use a moderate bracking for as long as i can. The idea behind this is that once you get the rotor hot it will straighten it self. It works for me.
+ 1
(Nov 23, 2013 at 19:06)
My front rotor was so warped that both pads had to be retracted out of the caliper "gap" to prevent the rotor from hitting the pads (the rotor was almost hitting the caliper housing). I tried using my fingers but it did not do much if anything. I finally got a 12" Crescent wrench and with my hand on the very end of it I started bending the rotor where it touched the pad (inside or outside pad), as I got it more straight I moved both pads in, and then repeated bending the rotor where it touched the pads. Took ~15 min. to get the rotor perfectly straight!!!!!
+ 1
(Sep 27, 2011 at 5:16)
My rotor is untrue and its really annoying because i have to set up my brake really loose (pads for from rotor) to stop it from braking without me doing anything. I tried to bend it back, but no matter how many times and how hard i pull, it just gets back to its bent position. You seem to be using a skinny rotor, mine is a thick Hope floating disc rotor... Any tips ?
+ 1
(Sep 27, 2011 at 5:31)
This only works if your rotor is slightly out of true... if it's really warped then you just have to admit defeat and get a new one.
I found Hope floating rotors especially hard to bend back, which is annoying as they're twice the price.
See here for a cheaper alternative:
+ 1
(Sep 27, 2011 at 5:34)
Mine isnt very bent, just slightly but it still touches the pad if i try to set my brake up properly, the rotor doesnt need replacement, but its really stiff so dont manage to bend it back out. Should i try to get extra leverage ?
+ 1
(Sep 27, 2011 at 7:39)
maybe you can find someone who does forged iron stuff (fences, gates, bars etc) ask them to heat it and correct the warp for you.
+ 2
(Sep 27, 2011 at 7:58)
Ha non merci. I dont have any friends who can do that and if i go to some stranger they will either refuse or ask for me to pay a little something, i'll keep trying maybe perseverance will pay off
+ 1
(Sep 27, 2011 at 12:41)
Bin the floating rotor, you will be forever trying to get it straight, and when you do it will get knocked out again, they are more hassle than they are worth. remember they arn't attached the the centre (hense floating) so is very tricky to get any leverage. You are trying to get a thin ring of metal flat, not easy.
+ 1
(Sep 27, 2011 at 12:46)
Yeah but i cant afford a new one... And the red looks good with my bike haha thanks for the advice though
+ 1
(Sep 27, 2011 at 17:49)
+ 1
(Sep 27, 2011 at 17:50)
if worse comes to worse use two rotor truing tools, to lever against each other, and give er' hell
+ 1
(Sep 28, 2011 at 0:45)
you could just get a GOOD bike mechanic to fix it?
+ 1
(Sep 28, 2011 at 0:53)
Im pretty sure you could consider me as a quite good bike mechanic, i always get to what i want, but the rotor is just reaply stiff and wont bend. Besides this doesnt require much skill, just control the strength with wich you pull/push the rotor. A GOOD bike mechanic couldnt do much more, the only advantage he would have is tools but i dont think they would be very useful, pull with your hand or with a tool, the rotor just doesnt wanna bend back in shape
+ 1
(Sep 28, 2011 at 13:26)
bend it back at the spokes of the rotor and it will will go if its being stiff like that but use the adjustable wrench trick or the parktool
+ 1
(Sep 28, 2011 at 16:52)
Will try. Thanks !
+ 1
(Sep 29, 2011 at 2:00)
make sure you have centred the caliper properly first, on hopes you need to set the rotor in the centre of the caliper not the centre of the pads. Just not on the bent bit! You should have centre markings on the caliper to help, the pads then will centre themselves after a few brakes, then check and adjust the rotor again. Good luck. If you get nowhere then take it to a good mechanic and tell him you'll buy him a beer if he can get it running true.
oh and don't try and bend the centre of the rotor! Just the braking surface, I'm guessing freeride5 didn't pick up on the fact that you have a floating rotor.
+ 1
(Sep 29, 2011 at 2:37)
Thats what i thought too with the brakimg surface, because im pretty sure the center of the rotor is nice and straight, its just the floating bit thats bent, but i thought i might give it a try because it didnt seem to work when bending braking surface. My caliper and pads are well centred, i dont have a hope brake btw i run a mechanic avid BB7, i just have the hope rotor. Apart from being bent the rotor is quite damaged anyways so i might change it anyways, but cant afford it yet so i'll just try and get mine straight, myself ! If i do it myself i'll have learnt it and it will be free, i work on my bike alot and am pretty good mechanic and i keep learning on my own, i dont like having to go to someone who can do it for me
+ 2
(Sep 27, 2011 at 11:45)
I simply use the tool that parktools designed for this.. But then again im running floating know so havent used it on own disks...
+ 1
(Sep 27, 2011 at 1:28)
Try to fix the Shimano Xt Discs or Hopes like that ;p i got my XT bent a bit and that was a hell of a fight to repair it... but i did it after 6 hrs of fight it was like a new one ^^
+ 2
(Sep 27, 2011 at 2:18)
hope disc a very easy to bent back in to shape if you got floating disc
+ 1
(Sep 27, 2011 at 5:18)
Mine wont give up, it will stay bent the other way no matter how hard i pull...
+ 1
(Sep 27, 2011 at 9:25)
there's your problem your pushing to hard got did it gradauly otherwise it just bend other way like you said if it carrys on just take it to your lbs
+ 1
(Sep 27, 2011 at 10:17)
No it doesnt bend the way i pull. I have done it gradually, but it just always gets back to its bent form, it doesnt get unbent or bent back the other way
+ 1
(Sep 28, 2011 at 0:53)
do it better, youre obviously doing it wrong or it would be working wouldnt it?
+ 2
(Sep 28, 2011 at 0:55)
How do you wanna pull wrong ? I pull the opposite way of the one in which its bent, when i pull itbends the way i want, but when i let go it just gets back to its bent shape
+ 1
(Nov 9, 2014 at 9:17)
I gave up on my xt disc... I put it up against the wall with my other written off discs... Got a hard bump on the disc when bike fell over and the aluminium part got bent (black colored part of the disc), tried fixing it for 4 hours, gave up. Guys if the middle part is bent its game over... (i could be wrong, if there is a special tool for this type of disc)
+ 2
(Sep 27, 2011 at 2:40)
Please can we have video tech tuesdays back its so much easier to hear and see someone doing it at the same time and also i miss the cock ups at the end
+ 3
(Sep 27, 2011 at 19:22)
yah you go ahead and use your fingers to bend the rotor, im going to use my parktools rotor straightener
+ 1
(Sep 27, 2011 at 22:01)
I just did this lol. On a pair of hayes rotros that are like 3 years old. I d still ratger buy new ones though but thats just me. My rotoars were soundidng like wahles moaning lol.
+ 1
(Sep 27, 2011 at 5:13)
I have a red marker. Will that be a suitable substitute for the black one suggested? Only joking, top tip, thanks. I've always used an adjustable but will give the man hands technique a whirl next time. Cheers.
+ 1
(Sep 27, 2011 at 20:24)
I like seeing the back of a new carbon Trek Session....does this mean a full review soon??? Also great article, I hate the sound of breaks rubbing. Goes to show that if needed you could true a rotor on the trails.
+ 1
(Sep 27, 2011 at 6:55)
When my rotors need more than a quick alignment I remove them completely & put them between 2 pieces of smooth oak & press them in a vice. Its quick & easy and they come out true.
+ 1
(Sep 28, 2011 at 0:52)
that doesnt work, not that ive tried. i just know it doesnt. the fact that you think it works means you dont know whats going on. if somethings bent, you have to bend it back past straight to counter act the bend. clamping it between anything straight will only bring it straight for as long as you hold it, then it will just flex back to the original amount of bend think about it
+ 3
(Sep 27, 2011 at 5:23)
How the hell did they get their hands on a Session 9.9 already!? I work at a Trek dealer and we can't even get it yet. lol
+ 1
(Sep 27, 2011 at 17:49)
how did they manage to already bend a rotor?!
+ 5
(Sep 27, 2011 at 17:52)
Well Avid rotors are usually never straight in the first place lol
+ 1
(Sep 27, 2011 at 17:57)
hahaha good point! thats actually why im looking at this, in regards to my bent G2 Clean Sweep 160mm
+ 2
(Sep 28, 2011 at 0:54)
how do you think bud. probably because theyre the media trek doesnt individually give a shit about every dealer theyve got they care about media
+ 2
(Sep 28, 2011 at 13:09)
When I have a bent rotor, I go to
and order a new one for $12
- 1
(Sep 27, 2011 at 0:47)
Good to know that I was doing it the wrong way... I lost my use-brute-force-on-expensive-stuff virginity while straightening a rotor on a local "DH" race. I was doing it by pushing away the brand new rotor using my foot in SPD shoe, having spokes of my deemax wheel as support...
+ 0
(Sep 27, 2011 at 3:17)
im sorry but surly once the rotor builds heat up again it will return back to the state it was ie back to the memory that it had from being bent so this is just a quick fix not a proper one ?
+ 2
(Sep 27, 2011 at 5:22)
No, they are not made from the material which you are implying - that's pretty hi tech stuff. This metal will not retain any such properties. Whether bent or straight, heat applied will not return it to it's prior position. Also, Rubbing Alcohol (isopropyl) is a fantastic brake pad/rotor cleaner. It's probably what 's in the spay can.
+ 1
(Sep 27, 2011 at 12:58)
If it had memory like that, it would never bend in the first place.
+ 1
(Sep 28, 2011 at 9:00)
but if it was bent when hot that would make it bent and then to return to the shap eafter
+ 1
(Sep 28, 2011 at 12:25)
I guess if you're on a really long DH run and you bail.... it would have to get very hot to permanently bend.
+ 1
(Sep 27, 2011 at 13:00)
this is how I've always straightened my rotors...works very well. and saves money on buying new rotors..and buy other bike parts with the saved money
+ 1
(Sep 28, 2011 at 18:19)
because its fair and stuff that you have a carbon session to just mess around with, we should all get a turn
+ 1
(Sep 27, 2011 at 9:16)
Wish you could favorite articles (like we do for photos/videos) so some day I could use this as a guide.
+ 2
(Sep 28, 2011 at 6:49)
Good idea Mike. Maybe tweet it in the meantime? I do that for stuff I want to "bookmark" and share later... BTW - you could also bookmark it in your browser, but I know, that's sooo 1999.
+ 1
(Sep 27, 2011 at 5:05)
i would encourage folks to check the wheel for true before trying to bend the rotor. the wheel can have an effect...
+ 4
(Sep 27, 2011 at 5:13)
If your wheel is untrue, it has no effect whatsoever on the rotor.
+ 5
(Sep 27, 2011 at 7:29)
I've seen this mistake before... I think he's talking about a QR wheel that's dislodged slightly. The first thing you notice is the brakes are rubbing, but actually the axle is crooked. Remember, - always start with the basics and work your way to the more complicated.
+ 1
(Sep 27, 2011 at 7:55)
Oh ok i see what you guys mean now, check that the hub axle is well placed in the frame... That of course will have an effect. The thing is that the way psychobiker1 said it, it seemed like he was talking about an untrue wheel rim... Which has no link at all with rotor problems.
+ 3
(Sep 27, 2011 at 8:25)
Agree - psychobiker1 either is wrong in his statement or just bad at communicating.
+ 1
(Sep 27, 2011 at 0:16)
Very helpful tech tuesday as its a job that anyone can do and with the right know how can be done right. Thanks
+ 1
(Sep 27, 2011 at 5:35)
Don't forget that brake cleaners make your stoppers useless for the first few corners.
+ 1
(Sep 27, 2011 at 17:59)
if you use iso alcohol you can just light it on fire. looks cool tons of fun and there is nothing on the rotor
+ 1
(Sep 27, 2011 at 10:58)
I spin the wheel backwards so there is no noise from the hub, unless you run a crankstopper
+ 1
(Oct 10, 2011 at 1:59)
Thanks Mike! This is the best way I've ever tried straightening rotors!
+ 1
(Sep 27, 2011 at 11:16)
thank you, this came just in time the squeaking was driving me crazy!
+ 1
(Sep 28, 2011 at 5:05)
what happened to the tech tuesday vids? aint seen a new one for ages now
+ 0
(Sep 27, 2011 at 18:01)
I am bored. I think I have made 3 comments on this page. and who knows how many likes and dislikes
+ 1
(Sep 27, 2011 at 20:22)
I just use shimano rotors, avid rotors suck
+ 2
(Sep 28, 2011 at 0:58)
theyre all the same bud. they all come from the factory slightly off, or totally fine, its pretty random. its not like anybodys got some amazing frigging rotor producing technique that makes one brands rotor more awesome than anyone else. and you should use the rotor that lines up for your pads braking track
+ 1
(Sep 27, 2011 at 0:17)
Please make a video out of it!!!
+ 9
(Sep 27, 2011 at 0:27)
I'm not sure how he could get any clearer with a video? He's been pretty precise...
+ 4
(Sep 27, 2011 at 5:19)
Yeah but tech tuesday videos are so enjoyable and hypnotising !
- 1
(Sep 27, 2011 at 4:01)
Is this Aaron Gwin's WC Session 9.9? I would think he would just get new rotors all the time
+ 1
(Sep 27, 2011 at 6:34)
I do this!!!
+ 1
(Sep 27, 2011 at 15:55)
Where is the videos
+ 0
(Jul 6, 2012 at 5:09)
you lick it off!!!
- 1
(Sep 27, 2011 at 22:24)
How would you recomend getting feces out of a rotor?
+ 1
(Sep 28, 2011 at 22:28)
You are such a moron shishka. Stay gangster ya poser f*g.
Below threshold threads are hidden
- 16
(Sep 27, 2011 at 8:02)
This is a pretty irresponsible article. Its like writing a paragraph on how to do an appendectomy. If you want it done properly, bring it to a shop that has a bunch of experience in straightening rotors, and get it within tolerance. Or, be prepared to be purchasing a new set of rotors after you've bent the crap out of them. Anything brake related should not be tackled without a bunch of confidence you can do it right.
+ 6
(Sep 27, 2011 at 8:30)
its just straighting a rotor, its not gonna cause the brakes to fail in a disastrous way. Try it your self, most people know their mechanical abilities, and are prepared to replace parts if the job is not done right. honestly straitening a rotor is easy as pie.
+ 3
(Sep 27, 2011 at 8:37)
Yeah, settle down, captain.
+ 0
(Sep 27, 2011 at 8:52)
all it takes is a vice & 2 pieces of hard wood that are level. sandwich the rotor & press with the vice. Takes only a few minutes to remove the rotor & replace it. Done quick & simple & takes little if any mechanical skill.
+ 1
(Sep 27, 2011 at 16:30)
I work in a shop, and i prefer my fingers to a tool any day...
+ 1
(Sep 27, 2011 at 18:01)
ha! you have no friends
+ 1
(Sep 27, 2011 at 23:12)
@ jimbill - good thing i don't depend on your advice [ at least in this situation ] or i would still be walking my ride down the mountain : i hit a rock so hard i 90o a rotor [ L shape ] - first i bent it back by hand as far as i could [ about 30o still to go ] then using a multi tool with two of the allen tools out like a V wedge, bent it back some more - then used an adjustable wrench that a trail rider who stopped let me use, [ yeh ! i agree, who the hell carries one of those on a rip - but this guy did ] i got enough of the crimp out that with my weight on the bike while riding, it was able to pass through the calipers without any noticeable hesitation or hold, so i could get down the mountain and later have it replaced - the only thing irresponsible [ in my opinion ] is an 'absolutism' statement about repairs - by the way, i rode it this way for several more rides till i could afford a [ good ] new rotor -
+ 1
(Sep 28, 2011 at 0:03)
Sorry for offending, but I as a mechanic, who has straightened plenty of rotors, I take issue with "The argument against using tools". Doing it by hand is not better or easier. Like the saying goes, "A little knowing is a dangerous thing." The right tools in the right hands will get the job done right. Doing an emergency repair is one thing, but "fixing" a rotor for regular use, means getting it within a reasonable tolerance so your pads don't see excessive wear. And a whole paragraph on how to wash your hands...really? Sorry, again. I really do hope this article helps someone.
+ 1
(Sep 28, 2011 at 1:02)
doing it by hand is way better. tools bend it back in a way that is very unlikely to be like the way it was bent in the first place. which means youre gonna throw a bunch of uneven kinks in it. if its too kinked you've gotta put it on a vices anvil and hammer the kinks out of it. ive never used a tool and a bike has never left my shop with a rotor that wasnt straight as hell
+ 2
(Sep 29, 2011 at 10:18)
i dont pull the rotor... i just hit with a plastic little hammer
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subset: commoncrawl


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Residents of the southern Arizona town of Arivaca are monitoring a U.S. Border Patrol checkpoint to see how many arrests and drug seizures are made in a bid to remove longstanding interior checkpoints on the roads leading into the town.
Arivaca residents say they are regularly subjected to delays, searches, harassment and racial profiling at the checkpoints. Six residents monitored the checkpoint Wednesday on Arivaca Road, 25 miles north of the Mexico border.
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Mobile Commerce Minute Episode #442:
If you are looking for mobile payment success look no further than the quick serve restaurants in your area. They have been very early adopters of mobile technology – from mobile advertising to mobile coupons to mobile payments and now mobile ordering. While everyone else looks directly at payments – which aren't sticky – fast-food restaurants like Starbucks, Chick-Fil-A and Subway have been focused on the things that lead to payments. This makes their apps sticky and successful. Chuck gives us the state of mobile ordering and payments in the QSR world – lots of lessons to be learned from what they are doing.
With Rob Woodbridge and Chuck Martin
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text:
I remember virtual reality as a novelty and a dream forgotten. While the commercial video game industry has grown to juggernaut proportions virtual reality has been relegated mainly to military applications. Until now, or at least the soon to be now. A Kickstarter campaign for Oculus Rift made it's goal and then some to provide dev kits of their personal virtual reality gaming system to people who make games.
The promise is a totally immersive gaming experience affordable enough for the general public. Now they are funded and presumably video game designers from some of the industry heavyweights have dev kits and are working on making games for the Oculus Rift.
I couldn't find a single bad review from the 2013 Consumer Electronics Show (CES).
In fact, the only negative thing I could find about the Oculus Rift had more to do with the fear of what happens to people when they can be totally immersed in a video game world more exciting and better than the real world. World of Warcraft already has twelve step programs, will some people plug into VR and never come back?
As with any tool the possibilities for advancement or abuse are built in.
I am excited and cannot wait to try out an Oculus Rift and like current video games, tv shows, or books I will try and limit my immersion so I can still get work done.
You can see the Oculus Rift in action all over YouTube.
As if real VR isn't enough, Interaxon has an Indiegogo funded gaming headset allowing users to control games with their brain waves.
I wonder if the two headsets could be combined to create a virtual world controllable by brain waves.
Wait a minute, The Matrix is just a movie right?


text:
(Chico) A new coffee roaster and cafe with a unique "neighborhood vibe" is coming soon to Park Avenue in Chico, further testimony to the economic and cultural revitalization transforming the business corridor. The new "15th Street Cafe" will open soon in the Park Village Center at the corner of Park Ave. and 15th Street along Oakdale Street. Park Village is a neighborhood retail and commercial center, and is more popularly known as the "Nobby's Center" because it is also the home of the legendary and beloved Nobby's Hamburgers.
15th Street Cafe is owned and operated by Mark McGinnis and his father Michael McGinnis, both of whom are long time Chico residents and live in the neighborhood. Mark McGinnis has spent many years in the title and escrow business, and is now following his dream of being the proprietor of a coffee roastery. Michael McGinnis is a former Chico city council member who served as mayor, and will be retiring soon as the executive director of the ARC of Butte County, a large non-profit company that serves people with disabilities. 15th Street Cafe will enhance the iconic and historic Barber Neighborhood, offering a cool and comfortable meeting place with indoor and outdoor patio seating and quality food and beverages.
The Park Village Center itself is under new ownership, and is in the midst of a a major revitalization and redevelopment project. Leasing is being handled by Carrie Welch and Mike Donnelly of Coldwell Banker Commercial - Northern California Retail Division. Design work is being handled by Mike Trolinder of Location Arts. The Park Avenue corridor is undergoing a remarkable urban transformation, with has included major business expansion from such companies as Lulu's Fashion, Printed Image and even an emerging brewery and distillery district including Hooker Oak Distillery at Park and Myers Streets and Secret Trail Brewing coming soon.


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SAVE was launched in to oppose an approved open cast mine in an ecologically sensitive wetland. The legal battle against Sasol resulted in the approval being overturned.
2008-2009: Court Orders against the Emfuleni Council to stop pollution of the River from waste-water works. SAVE obtained various High Court Orders against the Emfuleni Local Municipality, inter alia:
- an interdict restraining the Municipalities from allowing raw sewage to enter the Vaal River;
- a mandamus compelling the Emfuleni Municipality to maintain its pump stations properly;
- a mandamus compelling the Emfuleni Municipality to comply with the relevant general standards applicable to waste water discharged into the Vaal River;
- an order compelling the Emfuleni Municipality to remove dead fish and birds from the water and banks of the Vaal River.
The Emfuleni Municipality is currently in contempt of several of these Court orders and statistics are awaited to take action against this Municipality in this regard.
2011: Overturning the sale of the Eligwa property in Vanderbijlpark by the Emfuleni Council to a private developer. This property is one of the few areas on this section of the Vaal River that is open to the general public.


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Serato DJ Pro offers the ability to pay via a monthly subscription - this is a great way to get all the features and expansion packs of Serato DJ Pro without having to commit to the full price standalone licenses.
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text:
In the tropical grasslands across the top of Australia, the Gouldian Finch is so endangered there are no more than three thousand left in the wild. But its also a very rare bird in another way.
Most species come, typically come in one form, where all the individuals of the species look the same. The Gouldian Finch comes in three different sorts yellow heads and red heads and black heads.
Usually natural selection produces a species in just one form. So why does the Gouldian Finch have three? To answer this question, Dr Sarah Pryke studies them in these aviaries in the Hunter Valley.
Im very interested in the behaviours that birds do and especially to do with colour and genetics so, why certain birds have got different colours. Gouldian Finches are pretty unique because they basically wear their genes on their heads if you like.
Sarah was intrigued by a key behavioural trait: fiery red-heads rule the roost.
Gouldian finches always attack from above. Dominant bird always goes to the top. In this case its generally red heads. They tend to be a lot more dominant than the black birds.
Its the classic pecking order!
It is completely the pecking order.
While bird breeders have known about the dominance of redheads for some time, Sarah has found there's more to head colour than meets the eye.
Its no surprise the Gouldian Finch is a popular aviary bird because its just so colourful! But from a birds point of view the males rainbow colours do little for the female unless hes a match up top.
First of all, she looks for somebody who has got the same head colour as herself. Within males of the same head colour she will also judge males on the sort of intensity of the ultra violet blue colour band that goes around the head mask. But the overriding effect is definitely the head colour.
And with good reason. Different head colours are genetically incompatible and cant breed successfully. If this female mates with a red-headed male, her children will pay the price. Many of her chicks will die, and her daughters will do particularly badly only one in five will survive. But to compensate, the female has evolved an amazing defence. If forced to mate with a mismatch, shell produce chicks that are nearly all male, which have a much higher survival rate.
Finding this control of a sex ratio really suggests that females have a lot more control over something that a lot of us previously have thought is pretty random.
To prove that the female, not the male, is controlling the sex of their offspring, Sarah gave hundreds of red headed males a makeover.
So theres quite an art to painting a Gouldian Finch.
And what you dont want to leave is any red roots!
Does this dye hurt them?
Not at all its completely non toxic and actually when we are finished we just simply take it off it washes off very easily.
Ah ok... If I was a female Gouldian Finch I wouldnt know the difference.
And this is where it gets really interesting... This female thinks shes looking at a black headed male but its actually a red head in disguise. This is what happens when a female mates with a male who she thinks is an incompatible. She lays less eggs and has more sons. Female Gouldians judge whether a male is a genetic match, just by looking at his head colour.
Its completely a visual cue its pretty amazing that we can change the head colours and that completely changes what she does with her offspring.
When their wild populations are small and fragmented, it can be difficult for female finches to find Mr Right. To help rebuild the Gouldian Finch populations in the north, Simon and Sarah are trucking 200 designer nest boxes up to the Kimberley.
One of the problems that the Gouldian Finch faces is that their landscape has been really altered recently due to fire and what this has done is actually removed a lot of the old trees in which the Gouldian Finch nests in.
Hopefully by increasing the sizes of the populations this will provide enough mates available to birds so that they dont have to keep breeding with an incompatible partner. And in just a couple of sites that weve been working in the last year, we could only put up about 400 nest boxes. We actually managed to increase the breeding densities by twenty percent which is really, really encouraging.
Not only does their work support an endangered species, it opens a window into how species evolve in the first place.
So we believe that that pattern of variation that we see in the, in the grass finches across the top end of Australia, is a result of climate change over the last million years or so.
A drying climate pushed the ancestral finches into the northern-most tips of Australia. With their populations separated, different forms evolved in isolation. But as the climate became wetter and the savannah expanded southwards, these forms came back into contact with each other.
Thats a process which has probably repeated itself over and over again and its resulted in these distinct forms that we see in any bird book.
The more were learning about it, the more this is going to just teach us so much about not just speciation, what a species is, but also about how different genes control different behaviours, what colours are used for and hopefully help us save and manage the populations of Gouldians that are remaining.
Image slides - The Sex Life of Finches: In colour!
- Reporter: Mark Horstman
- Producer: Anja Taylor
- Researcher: Anja Taylor
- Camera: Kevin May
- Sound: Steve Ravich
- Editor: Sasha Madon
Related Info
Dr Sarah Pryke research and publications
^ top
Comments for this story are closed. No new comments can be added.
24 Jan 2011 6:03:40pm-
just a thought, do you think that the number of male and females produce is base on what you have in an avairy for survival ratio like in the wild.
10 Dec 2010 7:24:42am-
A. Do Gouldians in Australia get red mites and Northern Mites? I know about the one's that affect them internally when they are stressed. I'm asking about ectoparasites.
B. How do I ever get normal birds in the South of England? An added complication is that I live on the Isle of Wight, though can travel to Southampton; Bournemouth; Portsmouth, etc. Wrong to ask? If you don't try you don't achieve.
20 Sep 2010 7:54:40am-
video was TOO SHORT !
24 Jun 2010 4:08:42am-
Good research I have a RH cook and BH hen the first round they give 7 eggs no result. then 6 eggs 1 baby born and died after 6 days.Third time 7 eggs and 2 baby born and after 3 days they died. again 6 eggs and only one baby he was a weak bird but he did survive for a month. At present they had 5 out of 6 eggs, all are Good and healthy the color r not out yet as they r in their early molt days.
22 Jun 2010 10:29:49am-
I have a RH hen and had a BH male;she laid about 30 eggs over last summer, none hatched. The BH male died, and I purchased a beautiful RH male in Dec. 2009. Within minutes of introducing them in an aviary with many varieties of finches, she let him know he was hers. Since then, she has laid 5 clutches of eggs, I have 5 males and 3 hens colored out now, with 4 that haven't started the 1st molt. BTW, the 5th clutch just hatched 4 of the 5 eggs since yesterday, hope the 5th egg is hatched by tomorrow. The male spends as much time on the nest as the hen, but she is much more protective.
18 May 2010 7:42:29pm-
The question of selection by head colour is quite fascinating. However, I remember reading somewhere(?) that the colours a bird sees is very different to the colours the human eye sees. Would this not be a factor when a hen makes the decision with which male bird to mate? Would black be more pronounced to a bird's eye than red or vice-versa?
11 May 2010 11:44:39pm-
Haha, good question! :) My black-headed females still prefer red-heads, if the red-headed male is the one in the best condition :)
11 May 2010 11:38:50pm-
I wonder how this scientific research was carried out (I couldn't find the articles). I have bred gouldian finches for 12 years, and this is not my experience..! Although I do experience that some pairs produce more hens or more males. I have had BH-BH pairs producing only males. And the last two years I have got 8 babies from two mixed-pairs, all females except for one male.
But maybe wild birds are different. But I do have some knowledge on genetics, and to me it seems unlikely that the head-colour can influence the sex - as this doesn't happen in captivity. But maybe something about light influence etc. too.
All the best,
Tone Lygren, DVM, Phd-student
17 Aug 2010 4:21:36pm-
Hello, This is my experience and I think they might be right about the head colour. I've hat gouldians for almost two years, a RH male and Bh BB WB female, they've hat about 6 clutches and they go through the proses, incubation and when the off springs are born SHE pitches them out of the nest, let's them die etc. is this coincidences or is the theory truth? someone explain Pls.
I wont let them bred again though. it's painful to see this happened.
03 Apr 2010 4:59:27am-
Hello i'am gould fan from the Netherlands (Europe) and i got 10 pairs goulds in mine avairy. We here in the Netherlands start breeding in december/january, now at april i got now a 15 young goulds, two pairs they are doing it great, one pair is BH hen with a RH male, they have 6 young goulds, i got also YH hen wit a YH male, they have now for the second time 6 young gould, the air humidity is the most important thing i allways keep this humidity at 60-70%, the eggs are don't eggs dried up. Let your hen chose there own female, they staying together for the rest there live, and so they take care of the young goulds.
19 Mar 2010 5:42:11am-
I have two pair in an avairy. Thwe BH male has selected the RH hen and the RH male has gone with the BH female. They have been in two nest boxes for several weeks (over 6) and it appears that the males sit in the nests more often than the hens. I checked yesterday and found both nests contained over 12 eggs, and observed many eggs were partially dried up, altho there were some with full yolks. I have broken them all and put the nests back . How many eggs are normally in a clutch and is March/April too early for them to be breeding in South Australia?
20 Jan 2010 6:48:22am-
Very intersting, but...
I don't have a lot of experience in gouldian breeding but last year my gouldian pair was of different head colors (male BH and female RH) and they had ten chicks: only two RH males and eight BH females !
This year the female died and I gave the widowed male a BH female; he was really agressive with her and finally I presented him a red headed female and he accepted her immediately ! They are now incubating 6 eggs... I'm waiting.
I also have 4 more gouldian pairs and only two of them are of the same head color; a lot of chicks birthed already. All couples are according. I already know that my RH pair as 4 males and 1 female in his offspring (although they are same head color), and that my BH pair has 1 male and 2 females offspring. The chicks from one "mixt" pair are: 2 males and 3 females... So ?
May be it's not the same with domesticated birds, because of the numerous crossings between different head colors along the century ?
21 Dec 2009 8:49:42pm-
I am brand new at this. I have 3 varieties - 2 sets of greenies, male and female black heads and male and female red heads. I believe that the black heads have 2 babies. Also, there are two with yellow bodies. I was told that they are male and female, but they look exactly the same. How do I tell? What is the yellow variety?
05 Jun 2009 7:10:15pm-
in my own birds gould's i beleave that i can tell if a bird is right legged or left legged as we are ither left hnded or right hnded
04 Jun 2009 9:31:55pm-
Not a comment, but a question. I'm wondering how the female Gouldian Finch can tell what colour its head is.
05 Jun 2009 2:03:07pm-
Perhaps it's not so much that the female knows what head colour she has as much as she has a preference for a particular head colour?
05 Jun 2009 2:37:41pm-
This is a good question (how does a female Gouldian tell what head colour it is?) and the focus of some of the next parts of research that we will be doing, and have done recently. As the genes for head colour seem to be linked to many other genes that code for different aspects of behaviour and morphology it is probably not that difficult for an individual to 'know' what it is in much the same way as other species instinctively 'know' what they are. One thing that we do know (by using the same cross fostering design as in the experiment covered in this story), is that they do not learn their own head colour by looking at the parents that rear them. If a red headed bird was reared by black-headed parents, it still behaves like a red-head and finds other red-heads attractive. Therefore they do not imprint on their parents, and this indicates that the 'knowing' what they are is more deeply innate in their genetic make-up.
05 Jun 2009 7:03:44pm-
by looking in the water as it drinks
17 Jan 2011 6:21:17am-
my name is shahram firuzi,iam from shiraz iran.i went through your web site.ineed some video of birds goldian,irealy appretiate if yoo send me some videos.looking forward to your reply.thank you.
shahram firuzi.
20 Nov 2009 11:15:41pm-
I found the topic really interesting, especially as I have a red head, yellow bodied cock who has mated with a yellow headed, yellow bodied hen. The first brood was five eggs and one survivor. The second brood was six eggs and five fledged chicks - I am waiting to see the ratio of female to male chicks!
09 Dec 2009 9:51:38pm-
from my experience i know that the number of survivors is more releated with the breeding conditions. But i have noticed much more males than females offsprings in every couple with different head color
04 Jun 2009 8:48:58pm-
Great segment. Absolutely fascinating. Well done!! A species that needs to survive.
24 Jan 2011 5:55:45pm-
after reading everyones comments on how many males and females in an avairy, I think the brds knows what sexes are needed to continue the survival rate in the cage, just a thought.
21 Oct 2011 12:29:38am-
Interesting point. After getting only females for two years, I suddenly got only males one year, and then quite evenly distributed the third year (slightly more females).
I get about 40-50 chicks a year, and I'm noting down the statistics on them. I breed both "clean" and mixed pairs, so it will be interesting to see if this applies in captivity. As it looks until now, it doesn't seem to apply though.


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Investing Your Money
For people with sizeable nest eggs, who are prepared to accept a pre-agreed level of risk with their capital, investing can prove a rewarding way of making more from your money.
The Problem With SavingThe economic turmoil of recent years continues to make life difficult for so many people. This includes savers especially, who have found interest rates on traditional deposit-based accounts available through banks and building societies tumbling to historic low levels, due to Bank of England base rate.
If you're relying on deposit-based savings to store and grow your nest egg or as a source of income, the chances are it's not achieving a rewarding rate of return. Yet it gets worse, because when you consider the impact of inflation – the rate at which the cost of living rises by – your money may actually be losing money in real terms.
Where to Invest?If you've never invested before, it can appear confusing and daunting. After all, who wants to entrust their money into something they don't really understand? And who wants to risk potentially losing money especially in retirement?
However, it needn't be as complicated or as risky as you might think. By obtaining the right financial advice you can ensure everything is made clear to you before making any commitment, and that your money is invested in a way that suits your appetite to risk and reward.
You may like to take a look at the Types of Financial Advisor' to identify which sort of advisor you would prefer.
With a number of advisers there is no-obligation to act upon on their advice, or a fee to pay for receiving it. This means you can find out whether investing your money might be right for you without having to spend a penny, unless you go on to act upon their advice. They are likely instead to charge a fee for the products they arrange for you, initial and/or ongoing, which should be disclosed to you in writing before you make a final decision.
Retirement Planning - General guidance, Retirement Pension Planning, Inheritance Tax Planning - General guidance, Equity Release, Long Term Care, Making a Will, Annuities, Finding a Financial Adviser
Take a look at our overall section on retirement planning too.


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The year is 1968, and 2001: A Space Odyssey has just premiered in Washington DC, offering viewers a rare and absorbing glimpse of a hypothetical future filled with technological marvels.
Stanley Kubrick's science fiction epic has since become one of the most celebrated films of all time, due in large part to its realistic portrayal of many innovative devices that took decades to become reality.
Meanwhile, an American computer scientist and University of Utah professor is busy working on a ground-breaking innovation of his own, just as ahead of its time as the portable tablets and voice controlled systems utilised by Dr. David Bowman and co.
Ivan Sutherland, alongside his student Bob Sproull, has just completed work on The Sword of Damocles – the first ever augmented virtual reality headset.
The technology was primitive, to say the least. Designed to help helicopter pilots to land at night by automatically moving low-light cameras in synchronisation with their head movement, it was capable of tracking the user's eyes and head position. However the Sword of Damocles was not fully immersive; the headset contained transparent parts that users could see through to the reality of the world beyond.
Furthermore, the Sword of Damocles was so heavy that a single man could not support it under his own strength. Instead, the device was suspended from the ceiling by an adjustable pole – hence why it was named after a mythical Greek weapon that hung suspended above the king's throne.
All that aside, there's no doubt that Mr Sutherland's innovation was an incredible feat of scientific innovation and technical engineering. It paved the way for future devices such as the Oculus Rift, which is now considered to be at the forefront of virtual reality technology.
As for Sutherland himself, he went on to build a distinguished career in graphics and computer science. In 1988, he was awarded the Turing Award from the Association for Computing Machinery for inventing one of the earliest graphical user interfaces, and in 2012 the then 74-year-old won the Kyoto Prize for Advanced Technology.
The rapid rise in wearable augmented and virtual reality displays like Google Glass and Oculus Rift has shone new light on the Sword of Damocles and the fascinating work of Sutherland and Sproull. There's no denying that both men will go down in history as fathers of modern virtual reality and true pioneers in the field of simulation technology.


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Meijer continues to grow brings additional opportunities to support local Kentucky communities through fun events for the entire family.
For example, Meijer brought the Jump with Jill Live Tour – the world's only rock & roll nutrition show – to five school assemblies in Bowling Green this spring. The Jump with Jill Live Tour Presented by Meijer is targeted to children in Kindergarten through sixth grade, and teaches nutrition through music. The Midwest cast recently visited Meijer to get outfitted for the show.
Meijer is currently one of the sponsors of Eastern Kentucky University's athletic program, as well as seven Relay for Life events through the American Cancer Society.
Meijer is also a longtime sponsor of Thunder Over Louisville, the nation's largest annual fireworks display now in its 25th year.
To celebrate the 25th Annual Thunder Over Louisville, Meijer triple matched customer donations to local food pantries. Customers in the Louisville area generously donated more than $47,000 during the Spring Simply Give campaign, helping local food pantries restock their shelves.
That commitment to supporting hungry families, combined with a donation from Meijer, raised the local campaign total to nearly $190,000 for local food pantries.


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I was thinking about witchcraft a lot and what makes it attractive for me... Witches' tools! Almost anyone can name few of them like brooms, cauldrons, wands... and then you will start guessing and may be will name crystals. But do we really know witchcraft tools and do we know all of them? I decided to explore the topic of witches' tools and found many interesting facts.
As soon as the power of nature plays the most important role in the witchcraft practice, the tools also, in my opinion, have direct connection to the nature, the very first phenomena a human faced, and that's why the tools are made of natural materials like wood, stone, metal (as soon as nature gives it).
I was lucky to find a very good book "The Witches' craft: The Roots of Witchcraft and Magical Transformation" by Raven Grimassi ( I bet it's a pseudonym). The author explains that each of such basic tools as pentacle, wand, dagger, and chalice is "an extension of our (Wiccans'/witches'?) own personal power, a symbolic inner connection to the divine spark within us that allows for external creation".
According to the author the mentioned tools have a "history of great antiquity.. each tool connects to an ancient belief system". That is what I was looking for and it means that witchcraft has inherited its system in the beginning of time. So what I knew about some of the tools and what discovered now.
Me: The wand in my opinion has to be considered as one of the most ancient witchcraft tools. The wand is the best known witchcraft tool and very well reflected in popular culture (Harry Potter is in my mind). I know that wand is used for casting spells.
Discovery: In immemorial times people used to worship trees and observe their qualities. Many cultures had (and have) a concept of a Sacred tree - roots extend into Underworld, dark side, while upper branches of tree - to Heaven World, a light side, and both the world are connected to each other.
The wood was also a material easily available and easily worked up by our ancestors. There are many types of wood hence many types of wands which inherit the quality of each tree. The main wood used for wand making is oak, willow, birch, elm, rowan and walnut.Wand represents the extension of the arm and associated with the element of air. It is used to evoke and invoke the spirits and Gods of Nature (as it has connection to the Heaven World) (b).
Me: Well, the tool which is very well known to me. Seems like I knew about it since my childhood. In Russian folklore and Russian literature all the witches always used to ride a broom. So no doubt it is a mean of transport.
Discovery: As appeared the broom is not that plain tool. It is evolved into a composite of both male and female fertility. As a ritual tool of Witchcraft the broom is used to sweep the ritual setting for purification. The broom is comprised of three different materials: the handle is mad of ash, the sweep of birch twigs and the binding lash is made of willow strips. The triad the materials announces all the spirits that the witch operates from the name of Hecate. The broomstick allows the witch to have power over spirits of night, shadow and darkness (b).
Not a single word about flying on the broomstick! Is it then a modern interpretation of this tool?
Me: I had a little knowledge about this tool and used to call it a "knife". TV shows mostly present it in the scenes where a witch uses it to for killing ritual animals.
Dicsovery: I never knew it is called athame. This tool appeared later in history when people actually learned how to make tools out of metal. Athame is "a tool of elemental fire because the metal itself was forged in fire and retains the memory of this transformative power". The athame does such functions as tracing out a ritual circle and evoking the guardians of the four quarters (b).
Not as bad tool as I thought and quite a peaceful tool.
Me: I know that witches prepare their potions and ointments in the cauldron.
Discovery: The cauldron has more significance for witchcraft than we think. The cauldron is usually made of iron and associated with fertility, abundance and revival of the dead It is also a symbol of womb of the Great Goddess. In Celtic myths the cauldron is hidden in the Underworld or some magical castle or labyrinth. What means that cauldron can't be reached easily and the person has to make a long journey to obtain it (b).
Once again the stereotype thinking about the cauldron makes it simple and ordinary tool.
Me: I must have seen this tool in many movies picturing the witchcraft in the scenes where a witch holds it above her saying some spells and then drinks out of it, or offers to somebody else.
Discovery: Chalice is a tool connected to the Goddess through a womb symbolism (just like the cauldron). In ancient times chalice was a gourd, a large shell or a wooden bowl used to contain the sacred liquids. Nowadays the chalice is made of silver, a metal sacred to the moon goddess. In the Witchcraft chalice is used to hold ritual wine, which used to represent goddess blood and later with the raise of patriarchal power and the creation of agrarian society, the blood of the Goddess symbolized by the red wine became the blood of slain god of the harvest. The cult of Dionysus is the best known example of such symbolism. Chalice is a vessel of offering and receptivity (b).
The chalice didn't go far from my understanding of it as you can get to know easily what it is used for from its shape. Yet the deep symbolical meaning of it is not known to us.
The chalice didn't go far from my understanding of it as you can get to know easily what it is used for from its shape. Yet the deep symbolical meaning of it is not known to us.
These were several the most important tools of the witchcraft. However there are still many of them of which I didn't have any idea like the witches' ring, pentacles, a ritual scourge and others. I will try to give time to post about them too. Here now some stereotype image of a witch in modern art. Can you some of the tools beside her? ;)
P.S. All the material taken form the book has linkage (b) in order to follow copyright. Some citations are not full and modified a bit.


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Alright guys, so I really need some feedback on the way my Chinese casting is going...
Please do NOT confuse this with my last blog on Maximusblack vs. TheWay, because that was on a different matchup and was a completely different game.
Um, I really need to know how to say the following:
Warp Prism ( already know 空投 but that's it)
High Templar (colloquial name, I already know 高级神堂武士)
"Here we go!"
"This is a Huge engagement!"
Matchup (ZvP "matchup")
"Round" (for example "Round of 128", "Round 2" etc.)
"Set" (for example, "This set only made it to two rounds. There could have been a third round.")


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Fall is coming to California's Central Valley, and with it thousands of sandhill cranes on their annual migration. The birds land elegantly every year — if all is right with the world — to feed and roost in marsh and grassland.
C. Ely/USGS Alaska Science Center
The graceful birds migrate to the Lodi area and elsewhere in October and stay through February. For a closer look at the cranes, bird watchers can join viewing tours organized by the California Department of Fish and Game.
Tours will be held at the Woodbridge Ecological Reserve, also known as Isenberg Sandhill Crane Reserve, on the first three Saturdays and Sundays of each month from October through February 2009, according to the state agency.
State scientists rave about the cranes, which can cover 350 miles a day, calling them "magnificent birds, with characteristic red-crowned heads, unique clicking vocalization and distinct postures." They say the migrants offer "a wonderful wildlife viewing experience for avid birdwatchers and novices alike."
The lesser sandhill crane, which reaches a height of four feet, breeds in northern Canada and Alaska, some in the Arctic National Wildlife Refuge. About 20,000 pass through the Copper River Delta on the Pacific Flyway on the way to central California. In the controversy over drilling for oil and gas in the refuge, the sandhill crane is among the species that could be affected by industrial petroleum development, scientists say.
The greater sandhill crane, a state threatened species that grows up to a foot higher, breeds in northeastern California and parts of the Pacific Northwest.
California Department of Fish and Game/Heather R. Davidson
Growers and other landowners have taken measures to improve habitat and protect the aerial visitors that are often heard by a loud, musical rattle before they're seen. According to Fish and Game officials, restoration involves smoothing earth, pumping water, planting native vegetation and maintaining short ground cover. The state also works with the federal government and private groups to acquire wintering and nesting lands, buy conservation easements and convert crop land back to wetlands.
The public can support improvement of crane habitat and other environmental measures by contributing to California's tax check-off program aimed to aid the state's threatened and endangered species
For more information on viewing sandhill cranes, go to the Fish and Game site or call (209) 948-7708.
In November, there's a Lodi Sandhill Crane Festival scheduled Nov. 7-9 with more than 50 tours costing from $10 to $25 depending on location and length. Tour information for the festival event is available by calling 1-800-581-6150.
Firefly Books Ltd. has just published a new book, "Cranes: A Natural History of a Bird in Crisis," by Janice M. Hughes. Ms. Hughes, an associate professor and curator of the Department of Biology Vertebrate Collections at Lakehead University, lives in Thunder Bay, Ontario.


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Nine has officially renewed Big Brother for 2013.
Nine is now running promos for next year with some of its big shows, including Big Brother, The Block All Stars, Celebrity Apprentice, The Voice, The Great Australian Bake Off, Underbelly: Squizzy, House Husbands, Arrow and Australia's Got Talent.
Nine had been widely tipped to be renewing the show, especially when it was included in a showreel to sponsors recently. But it had also been on the record as saying it was under serious consideration.
The network's 2013 Upfronts begins in Sydney on Tuesday.


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Here's The Tracklist To Ace Hood's 'Trials & Tribulations'
Earlier this month, we attended Ace Hood's listening session for Trials & Tribulations. Though Ace played nine cuts off the album, it was shaping up to be a big album for the We The Best signee. Today, he releases the full tracklist that includes "Bugatti," "We Outchea" featuring Lil Wayne and more. DJ Khaled also told us to look out for "Pray For Me," in which he says, [It's] real hard. Like a 'Hustle Hard'-type thing, but with substance."
1. Testimony
2. Trials & Tribulations
3. Another Statistic
4. Before the Rollie (Feat. Meek Mill)
5. We Outchea (Feat. Lil Wayne)
6. We Them N****s
7. The Come Up (Feat. Anthony Hamilton)
8. Rider (Feat. Chris Brown)
9. Hope Ace Hood
10. Pray For Me Ace Hood
11. Bugatti (Feat. Future & Rick Ross)
12. How I'm Raised
13. My Bible
14. Mama (feat. Betty Wright)
15. Bugatti Remix (Feat. Wiz Khalifa, T.I., Meek Mill, French Montana, 2 Chainz, Future, DJ Khaled & Birdman)
16. F**k da World
17. Have Mercy
[via HHNM]
Previously: Rick Ross, DJ Khaled And More Share First Reactions On Ace Hood's 'Trials & Tribulations'


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This post may contain affiliate links. See the disclosure policy for more information.


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Talk:List of active volcanoes
Jump to navigation Jump to search
|This article (or one that was redirected to it) was nominated for deletion on 1 August 2012. The result of the discussion was keep (renamed). At the time of the discussion, the article was called Active volcano.
Article based on English Wikipedia
This article or parts of it were created based, in whole or in part, on this version of the English Wikipedia article. The complete history of the article can be found there. --Horeki (talk) 15:54, 15 June 2012 (UTC)
Context[change source]
The context and usefulness of this article and others like it was discussed at Wikipedia:Requests for deletion/Requests/2012/Active volcano.
Compare Volcano#Volcanic activity. --Horeki (talk) 23:35, 4 August 2012 (UTC)


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Portable artwork
Time to feel the artist's worlds
Streetscape diversion
Linking to:
Blue Monday
Ruby Tuesday 2
I measure out my life with haiku. My camera films my soul. ~ Gemma Wiseman
This always amazes me when I see artists who can do this kinda of art. I love where you live...so beautiful!!! You are very fortunate indeed.
Laurie @ Pride in Photos
A great work of arts! I've seen such act in Sydney years ago.
Thank you for visiting my world Gemma!
I have visited Melbourne only when I and my husband were going to Sydney long time ago but I know that your world is totally different compared ours here.
It`s very interesting to see your good posts - virtual travelling is a fine thing nowadays :)
Happy 2013 to you!
I always stop and watch whenever I see a street artist.
I played too. Mine are here and here.
I am always amazed at street artists. They sit there and create the loveliest pieces of work without an easel or a studio and with an ever changing audience!!
Thanks for snapping this awesome shot Gemma! Happy day!:-)
I have always enjoyed watching them do their art.
My entries:
Liz (mcn)
Liz (mot)
He looks VERY good at it! I wish he/they could seal it in some way for longer viewing! I love this post!
Amazing, wish I have a talent like that!
Hopping from RT.
My Ruby Tuesday Post
How interesting to follow their work. He seems to need a larger paper for the painting ;)
| My Peculiar Aristocratic Title is:
Lady Gemma the Unique of Walk upon Water
Get your Peculiar Aristocratic Title


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"Rajinder Singh Bedi Dwara Rachit Lajwanti", a new periodic drama based on the short story "Lajwanti" written by the late writer Rajinder Singh Bedi, was launched here on Tuesday.
Launched in the presence of his grandchildren — Ila Bedi, Rajat Bedi and Manik Bedi, the show is touted to be a "tribute" to the legendary writer.
Known as one of the leading 20th century progressive writers of Urdu fiction, Rajinder was also a Hindi film director, screenwriter and dialogue writer. As a screenwriter and dialogue writer, he is best known for films like "Abhimaan", "Anupama" and "Madhumati". As a director, he is popular for "Dastak" and "Phagun".
Set against the backdrop of partition, "Rajinder Singh Bedi Dwara Rachit Lajwanti", which will be aired on Zee TV starting September 28, is based on the love story of Lajwanti and Sunderlal.
"Today is a very auspicious day for the Bedi family. Though I've been writing for 15 years, today is a very emotional moment for me because after 15 years I'm getting an opportunity to explore my grandfather's story onscreen," Ila, who has produced the show, said at the launch.
"The story of the show is a little serious but it's a love story. We have converted his short story into a series. Though 'Lajwanti' is based in 1947, the way we have written it is very contemporary in its tone," she added.
Debutante actress Ankita Sharma will be seen playing the title role in the show along with actor Sid Makkar, who will play the role of Sunderlal. Manik will be seen as Sunderlal's father Kishorilal.
"Lajwanti is a dream role to play for any actress. I'm very lucky to debut with such a role on TV. Also if we look back at Rajinder Singh Bedi's work, then actresses like Vyjayanthimala and Jaya Bhaduri, they have played roles written by him. Now that I'm getting my debut with a role written by him, I feel very lucky. To go back to that era… I thoroughly read 'Lajwanti'," Ankita said.
To give a real feel of the Independence era, the show has been shot across various locations in Kashmir and Patiala. Also a special set has been made in Filmcity, Mumbai.
Talking about the show, Sid, best known for his roles in international films like "The Second Best Exotic Marigold Hotel" and "Save Your Legs!", said: "Sunderlal is very different from the typical male characters that we see on TV. I originally don't like doing daily soaps. But the concept of 'Lajwanti' attracted me and I decided to be a part of it."
On the occasion of Rajinder Singh's birth centenary this year, the show is said to be a perfect tribute to his work.
"'Lajwanti' is a very powerful and ageless story. The core story of the show is relatable. Therefore, it will be resonating when it will go on air. It's set in a very unique environment. The show will be a tribute to Rajinder Singh Bedi," Zee TV business head Pradeep Hejmadi told IANS.


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Create an Account - Increase your productivity, customize your experience, and engage in information you care about.
Agendas are available prior to the meetings. Minutes are available following approval.
View All Agendas and Minutes
An application for a Certificate of Appropriateness (COA) must be submitted and complete at least 14 calendar days before the meeting. The application should be directed to the Secretary of the ARB / Preservation Planner with the Department of Planning and Community Development by email or hard copy at:
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Not sure if your property lies within a local historic district? Check this map, and staff is available to confirm whether or not a property is within a district.
A COA is required for all exterior work including but not limited to:
For information regarding the Architectural Review Board, design guidelines, agenda scheduling, and/or submission requirements, please contact the Office of the Preservation Planner at 804-733-2314.


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Bro. Terry is married to Willie Ann Bateman and they have
a daughter, Virginia and a son, Troy.
Bro. Terry works for the Sherman Police Department
and does house repair.
His favorite Bible verse is Revleation 3: 20 which states: "Behold I
stand at the door, and knock; if any man hear my voice, and open the door, I will come in to
him, and will sup with him, and he with me."
Bro. Terry's hobby is to reload ammunition.


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Join our Wellness Wire publication for all sorts of nutrition, fitness, and wellness wisdom. Psychiatry is the medical specialty devoted to the study, prognosis, remedy, and prevention of psychological issues. These include various affective, behavioural, cognitive and perceptual abnormalities. Preliminary psychiatric evaluation of an individual usually begins with a case historical past and mental status examination. Psychological checks and bodily examinations may be carried out, together with now and again the use of neuroimaging or different neurophysiological methods. Psychological issues are broadly recognized in accordance with standards listed in diagnostic manuals such because the extensively used Diagnostic and Statistical Handbook of Psychological Issues (DSM), printed by the American Psychiatric Association, and the Worldwide Classification of Diseases (ICD), edited and used by the World Health Organization.
Females are also the unfortunate target of many Western culture media photographs of what lovely is—most teenage girls and younger women are taught by their culture and by the media that skinny is pretty. This social normal can cause a whole lot of emotional stress for ladies who don't or imagine they do not match their society's standards of gorgeous. With their vanity and self-efficacy damaged by feelings of being fat or ugly, adolescent and younger girls might develop depression more easily. It's merely a undeniable fact that boys more often do not have these kinds of stressors in their lives.
Sign up for e-mail affords, insights, and trade information that may assist improve your shipping. You may manage your preferences at any time. Work with infectious brokers in private and non-private research; public health and diagnostic laboratories and in animal care facilities has expanded. To meet these new challenges, time to time most of the countries altering health education practices and policies.
McConnell now says he'll convey up a repeal solely bill which might … Read More ...


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Our SFUSD music program provide instrumental music for fourth and fifth grade students. The music lessons in violin, flute, clarinet, and trumpet are taught in homogenous groups for beginning students. Lessons are given for 35 to 45 minutes once a week. This program is paid in part by a generous grant form the Mayor and the Board of Supervisors. Each year, Gordon Lau Elementary has about 100 to 120 students participate these lessons weekly. The students perform at major school events.
Here's a website for beginners in music.


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Sociology is the study of the society in which we live. It examines how we are influenced and shaped through being members of groups and organisation. Sociology is a challenging, academic subject and, as such, is highly regarded by universities and employers. In order to succeed, students will be required to read widely for this course. If you have an interest in news and current affairs then the chances are, you are already doing this.
The Sociology department currently deliver the AQA A-Level specification at key stage 5. This Sociology specification has been designed so that students will acquire the essential knowledge and understanding of central aspects of sociological thought and methods, together with a range of skills. The specification lays an appropriate foundation for further study of Sociology and related subjects in higher education. In addition, it provides a worthwhile course for students of various ages and from diverse backgrounds in terms of general education and lifelong learning. Equally, material studied would be useful for students intending to pursue careers in the field of Social Sciences. Sociology allows students to develop their literacy and numeracy skills via extended essay writing and statistical analysis. It also provides an opportunity to develop critical thinking and research skills.