
pyusho 500 meter

1913ll ernest henry roopakalppana cheytha oru franch racing motorcyclaayirunnu pyusho 500 meter (1913-1914). duval overhead kaamshaaft upayogichu roopakalppana cheytha aadyathe motorcyclaaya "technical touur dii fozhsu" aayirunnu ithu. silindarinu naalu vaalvukalulla oru multy-valve silindar head ithu upayogichu.
vikasanavum saankethikavidyayum.
swis enchineeyar ernest henry thante avishwasaneeyamaamvidham vijayakaramaya pyusho naalu silindar automobile racing enchine (1912) oru racing motorcyclinaayi sweekarichu. 500 meter oru samanthara eratta silindar enchin upayogichu, silindarukalkkidayil naalu valve silindar hedukalulla gearukalude cascade nayikkunna eratta overhead kaamshaafttukalund. 500 meter motorcycle avatharippichappol lokathile ettavum saankethikamaayi noothanamaaya motorcyclaayirunnu. ennirunnaalum, akkaalat labhyamaya lohashaasthrathekkaal munnilaayirunnu roopakalppana, valve seettukalkkidayil villalukal anubhavapettu. 
enchin avishwasaneeyamaamvidham noothanamaayirunnappol, direct beltt drive vazhi power transmission orotta vegathayaayirunnu. pinchakratthil pushoic pedalil pravartthikkunna drum break undaayirunnu. munvashathe suspension oru garder fork aayirunnu.
testt driveukal.
1913ll nadatthiya testt ransil motor baikkinte vishwaasyatha pyusho theliyichu. racing motorcycle athinte displacement classil parakkunna kilometeriladhikam loka recordilethy. 1913 leeii franch motorcycle grand prixil lalithamaaya valve aakchuveshanodukoodiya vishwasaneeyavum theliyikkappettathumaya rund silindar vii-enchinukalil kambani praveshichu. vividha sthalangalil yanthram rays cheythuvenkilum onnaam lokamahaayudham kaaranam athinte muzhuvan seshiyum parajayappettu.
pinneedu punarroopakalppana cheiyunnu.
1919ll henriyude yadhaartha aidi1 roopakalppanayude vikasanam pyusho punaraarambhichu. 1919ll dohk gear drive enchinte vashathekku maattiya marsell gremilan pradhana punarroopakalppanakal nadatthi, klachinoppam 3 speed gearbox. 1923-ll lesman antonesco roopakalppana veendum maatti, roopakalppanaye shaaft-aandu-bevel nayikkunna kaamshafttulla lalithamaaya oechsi, 2-valve motorayi maatti. ithu ettavum vegathayeriyathum vishwasaneeyavumaaya vakabhedamaanennu thelinjuvenkilum 1925 aayappozhekkum pyusho athinte motorcycle, automotive divisionukal verpeduthukayum jipi eratta padhathi upekshikkukayum cheythu.
2010 punarnirmmaanam.
modalinte nooram vaarshikathil, jeane bolikote enna electronics enchineeyar sii. kku idayil oru punarnirmmaanam nirmmichu. 2000lum 2010lum henriyude yadhaartha blueprintukalil ninnu, oru hoome lathum milling mesheen upayogichu.
2010 leeii saloon retromobilil punarulpadana yanthram pradharshippichirunnu.