Quote Originally Posted by nscrbug View Post
Hmmm...that's an interesting point you make there. I'm wondering if a change in crank size would also warrant a change in height or fore/aft of my saddle? Any thoughts on this?
Fore/aft unlikely, height yes. If you set your saddle height based on your knee angle at the bottom of the pedal stroke, it will have to come down by 2.5 mm if you're switching to a crank that's 2.5 mm longer. Conversely, if you set your saddle height based on your knee angle at the top of the pedal stroke (as my knees require), then it will have to come up by 2.5 mm to preserve the same angle.