So I could put a mark on one chain link and note it's position, note the position of the crank arms and put another mark on the tire and note it's position.

Then if I spin the crank arm 30 times and end up in the exact same crank arm position, will the chain mark and the tire mark be in the same position as the start? Or, will it eventually be in the same position due to some cycle?


???? Is this correct **********

But this only works for even ratios. What is an even ratio???

:confused: