Originally Posted by
mack_turtle
there is currently no consensus on crank arm length, so take any advice you get about that with a grain of salt.
there is a specific crank arm length according to inseam. What the exact length is in proportion to inseam i won't argue as if I know exactly.
All I can say is that, most large, xl, xxl bikes have the same 175mm arms, which is short for me.
Currently, the main thing negatively impacting my bike fit would be the 175mm arms.
I measured my standover at 886mm on my norco, and its right up there to the limit when I am barefoot. That means my inseam is nearly 35 inches. I don't have the fit or leverage I wish for over 175mm arms.