Originally Posted by
Marcus_Ti
Have you noticed that if you have a friend hold your rear wheel up, you spin the cranks and get the wheel going as fast as the highest gear will allow....the bike doesn't "jump" around in his hand?
Like I said. Pendulums. They are a thing. In a stand driving a wheel hard you excite one.
No. I tried it (with my own hand) & the movement is pretty much the same either way.
I don't really get the pendulum idea since it's rate depends on length. It would have to be very short to swing back & forth multiple times a second