Is that Rocky spider just a sprag clutch? If that's the case, it will not function as a drivetrain de-coupler in the same way the O-chain does. The sprag clutch only decouples in one direction (same as a regular freehub body), so any tension applied to the drive side chain will still cause pedal kickback. E-bikes use these so that the electric motor isn't rotating the crankset when the rider is coasting (motor often runs for a split second after rider stops pedaling - takes a bit for sensors to realize the rider is coasting).
June 15, 2021, 9:42 a.m. - Ryan Walters
Is that Rocky spider just a sprag clutch? If that's the case, it will not function as a drivetrain de-coupler in the same way the O-chain does. The sprag clutch only decouples in one direction (same as a regular freehub body), so any tension applied to the drive side chain will still cause pedal kickback. E-bikes use these so that the electric motor isn't rotating the crankset when the rider is coasting (motor often runs for a split second after rider stops pedaling - takes a bit for sensors to realize the rider is coasting).