are bike gear ratios like cars (obviously closer) ie they have a gear thats direct drive ie 1:1
Have a look here might have info you need: Gearing
Cheers
Eddie
Bikes engines dont generally get near a 1:1 ratio in relation to engine RPM and output shaft rpm, because they have a reduction ratio between the
crank and the clutch, usually around 1.5:1 - 1.7:1.
Top gear itself is often around the 1:1 mark though in relation to the clutch RPM, which would obviously be ~ 1.5:1 if compared to the crank RPM.
Chris
[Edited on 11/11/07 by ChrisGamlin]
also I think in general the output is effectively on the layshaft, so every ratio goes through 2 sets of cogs - 1) primary reduction and 2) selected gear
so the output shaft spins faster than the engine , hmm that could work , teh othe rway round might scupper plans .
Nope the other way around, the crank spins faster than the output shaft.
If the engine is spinning at 11,500rpm a 1:1 gear would give you top speed of about 240mph wouldn't it. That would be some car
hmm i see , with a diff and small tyres , might be a bit less than 240mph !
im try to get this in front of some CVT belts , if i could id do away with the bike gearbox altogether , thats why i looked at BMW engines , but i
dont think its gonna be possible .
might just have to junk the CVT bit .
[Edited on 12/11/07 by Volvorsport]
quote:
Originally posted by Volvorsport
... thats why i looked at BMW engines , but i dont think its gonna be possible .
might just have to junk the CVT bit .
[Edited on 12/11/07 by Volvorsport]