Agreed. I'm 6'3" and ftp near 350 and tried moving to shorter cranks and felt like I was throwing away the natural leverage my long legs provide. The wider the diameter, the less force you have to apply at any given moment, delaying fatigue. If the crank length better fits your natural stride length, then your effort is easier because it fits your body geometry. But if you try to cram in smaller rotations, then you have to generate more torque to get a rotation, which is throwing away the longer levers you are carrying on you already - Like running short steps with heavy shoes for no reason. If you are going to put weights on a flywheel, put them out at 175 cm instead of 160 cm to get more power out of the system more easily. But as pointed out, you first have to have enough breathing room (engine compartment, height) to let a 175 cm flywheel spin freely under the air intake (lungs) in the first place. By the time you get up to 6'3", your chest in aero is clearing that flywheel pretty good. A beer gut becomes a bigger problem than crank length.

---

----------------------------------------------------------
Zen and the Art of Triathlon. Strava Workout Log
Interviews with Chris McCormack, Helle Frederikson, Angela Naeth, and many more.
http://www.zentriathlon.com