I have just sent Crisp Titanium a video and a few photos of me on my bike pedaling to nowhere, so the ‘design process’ is starting to move along. I’m still far away from making component choices, I hope, but I’m trying to get ahead of the ball since there are so many questions, including this one that has come completely out of left field.

What crank arm length should I choose?

I’ve been running 170mm cranks since I started riding, but shorter seems to be all the rage these days, including this guy, who is my height and rides 165mm.

Apparently there are many reasons why shorter is better with crank arms, but my favorite one is that it can potentially put less stress on the knees and hips. My hips are fine, but I’m willing to try nearly anything to fix up my left knee.

I know at least one of you who is experimenting with 165s. Anybody else going shorter than you used to and liking it…or not?