Originally Posted by djbowen1
Why are you changing size.
I have an issue with my right knee. I'm hoping that shorter cranks on my road bike will help, as I hit and maintain a higher cadence relative to my other bikes. My other bikes (mountain bikes - one converted into a commuter) all have 175 crank arms. I don't spin @ the same rate with these, so I'm hoping that I can get away with 175 crank arms on those.
I know that some recommend using the same crank length on all one's bikes, while some do not. I'd like to feel the 170's. FYI, I'm 5' 8" with a relatively long lower body compared to the top.
