Originally Posted by SRidge
Is there any reason why I shouldn't go with a 172.5 on the front as this will have us spinning about the same circumferance.
Some will repeat the argument offered by some builders that a longer than usual 1/2 bike crank is preferrable for a tandem captain since it will provide for increased leverage. Frankly, I think it's just a way of glossing over the decision to use 175/170 cranks as the default standard, much the same as most 1/2 bikes end up with 170 as a default, regardless of how large or small the frame is.
The flip-side of the coin is, not all cyclists are sensitive to a +/- 5mm change in crank length, myself being one of them. My fixed-gear bike has 165mm cranks, my singles have 170mm, and my tandems 175mm; go figure. It takes me about a mile to adapt but, then again, I'm just an old hack rider these days.
Last edited by TandemGeek; 09-16-05 at 09:18 AM.