In my mind (maybe incorrect) derailleurs, especially clutch derailleurs maintain a decent amount of chain tension on the bottom of the chain, and the combination of chain tension and inertia (from both sides of th chain) can impart a pretty decent force to the cranks as the real wheel bounces through rough terrain. Not exactly classic pedal kickback, but it seems relevant when you watch slow mo' videos.
March 20, 2023, 10:54 a.m. - Morgan Heater
In my mind (maybe incorrect) derailleurs, especially clutch derailleurs maintain a decent amount of chain tension on the bottom of the chain, and the combination of chain tension and inertia (from both sides of th chain) can impart a pretty decent force to the cranks as the real wheel bounces through rough terrain. Not exactly classic pedal kickback, but it seems relevant when you watch slow mo' videos.