
shimano kull ekikaran

shimano total integration (sti) ack gearshift pranali haye jise shimano dwara racing saikilon key liye design kiya gayaa haye. yeh ack hii ghatak mein breaking aur gear shifting niyantranon koo jodata haye. yeh pichhale down tube shifting system key vipareet, baar seey ack haath hataae binaa gear koo sthanantarit karane kii anumati detaa haye. iss ghatak koo aamtaur parr "shifter" yaa "dohare niyantran leaver", yaa kabhi-kabhi "briefters" key roop mein sandarbhit kiya jaataa haye.
1989 key anta mein, shimano ney mountain bike key liye apani "rapid fayer" shifting kii shuruat kii. isase handlebar mein anukramit sthanantaran huaa-kuchh aisaa joe pahale kewal downtube shifter yaa angoothe shifter parr upalabdh thaa. yeh tantra ack rachet kii tarah kaam kartaa haye, badaa leaver gear cable parr tanaav lagu kartaa haye, chhota leaver ise badhati hui chhodata haye. rapid fayer tantra koo baad mein stye leaver mein upayog karane key liye anukoolit kiya gayaa thaa.
1990 mein, shimano ney sadak saikilon key liye apane stye shifting leaver pesh kiye, joe break leaver aur shifter koo poori tarah seey ekikrit karate they. isane break "hood" koo bhee phir seey design kiya jahaan savaar aamtaur parr apane haathon koo aaraam dete hain. yeh nayaa design anudairdhya tala mein ack samanya break leaver kii tarah kaam kartaa thaa, lekin savaar koo leaver koo dhakka dekar ack badey cog mein sthanantarit karane kii anumati detaa thaa taaki yeh paarshv roop seey dhuri banaa sakey. break leaver key peechhe, ack chhota leaver hotaa haye joe ander kii or dhakelane parr ack chhote kog mein badal jaataa haye.
iss pranali ney shimano koo samooh samooh nirmaan mein agrani banane mein madad kii.
1992 mein, saikil ghatakon mein anya pramukh vaishvik utpaadak, campagnolo ney apani ergopower pranali kaa utpaadan karane key liye sax company key saath sahyog kiya, joe isake design aur sanchaalan mein kaafee bhinn thaa.
2003 mein, shimano ney apane xtr samoohon mein mountain bike key liye "dohare-niyantran leaver" yaa sti kii shuruat kii. sadak shifter kii tarah, aiks. tii. aar. ney breaking aur shifting key liye ack hii leaver kaa upayog kiya. ise kuchh pratirodh kaa saamana karna padaa kyonki unhone disk break key vikalp koo kewal shimano dwara banaae gaye taka seemit curr diyaa thaa. unhein break leaver kii urdhvaadhar tala mein sthanantarit karane kii kshamata key liye "flippity shifters" upnaam diyaa gayaa haye.
sti aur ergopower ney kaafee hudd taka downtube shifting koo visthaapit curr diyaa haye, bhale hii kuchh saikil chaalak abhee bhee cumm kharch, cumm vajan, adhik lachilaapan aur behtar vishvasaniyata sahit vibhinn karanon seey downtube shifter kaa upayog karate hain. ack samjhauta baar-aind shifters yaa barcons kaa upayog karna haye. iss prakaar key shifters koo haath kii sthiti key karib rakhta haye, lekin phir bhee ack saral vishvasaniya pranali pradaan kartaa haye, vishesh roop seey ghoomane vaale saikil chaalak key liye. aiss. tii. aaee. aur ergopower pranaliyon kii kamiyon mein uchch vajan aur uchch keemat shamil hain. downtube pranali kii tulanaa mein ack stye yaa ergopower leaver mein kaee adhik bhaag hotey hain.
stye shifting pranali key nirmaan key baad seey mukhya sudhaaron mein vajan cumm karna aur kog count badhaana shamil haye. vajan kii bachat naee samagriyon jaise kii shimano key ghatak samoohon mein duralumine aur campagnolo key hisson mein carbon fiber kaa upayog karane seey hui haye.
lens armstrong sahit kuchh saikil chalakon ney vajan cumm karane key liye casset key liye chadhaai-vishisht bike parr ack maanak stye shifter aur chennering key liye ack downtube shifter lagaaya. aisaa isaliye kiya jaataa haye kyonki chennering kii tulanaa mein chain koo casset mein bahut adhik baar sthanantarit kiya jaataa haye. yeh vyavastha bike key kull vajan taka kii bachat curr sakati haye. union saikil chaalak antarrashtriya dwara anumat nyuntam kanuni racing vajan kii tulanaa mein, 200 graam kull vajan kaa lagbhag 3 pratishat haye.

