I believe my rpm dropped back as I found the best optimisation of length v power regarding a pedal rotation in the aero position. I had issues with my hip flexors even at 165 in an ironman and at 160 I think I have less dead spots so can engage for more degrees of rotation through the pedal stroke. With longer cranks I think I was spinning a higher rpm to carry through the dead spots of rotation.
My thoughts explained here.
https://www.trainingpeaks.com/blog/the-benefits-of-reducing-your-crank-length/
http://courtneyogden.com/winning-an-ironman-on-145mm-cranks/
My thoughts explained here.
https://www.trainingpeaks.com/blog/the-benefits-of-reducing-your-crank-length/
http://courtneyogden.com/winning-an-ironman-on-145mm-cranks/