- How to measure torque in a bicycle?
- how much newtons will produce by the pedal of the cycle ?
Most bicycle cranks are 170mm and they vary from 165mm to 180mm.
Skilled bicyclist can apply up to 1.5 to 2 times their weight on the pedals in burst of power to pass a race competitor by leveraging the handles and using the entire frame of the bike as a lever.
Say a rider weighs 160lbs.
$$T = 160*1.5*0.56=136lbs.ft$$
As an aside, a fit bicyclist can produce continuous 160-180 watts energy.