Joined: Jul 2002
Posts: 40,863
Likes: 3,115
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Hmm. I'm not sure I understand the aversion to crank-based PMs. My understanding is that they measure torque and cadence and multiply those data to get power. I thought they didn't care about gearing or crank length.