So far I have been very impressed by these units. Please post any comments down below. I did my best to explain how pedal based power meters work in a very simplified manner so let me know if you have any questions! During the cantilever explanation I simplified the system to a point load - technically the pedal force is two distributed loads over two bearing lands, but the principle is largely the same.

link (non affiliated): https://bit.ly/3EvzTs3

00:00 Intro & Construction
03:48 Q-Factor/Stance width
05:38 Force Measurement with strain gauges (separating force and offset)
12:30 Assembly and Install
14:05 Bike Fit James
15:00 Test methods/ Angular velocity
16:37 Data comparison
25:19 Cadence sensing in PMs