The principal clutch is a sophisticated form of centrifugal clutch and is typically mounted on the output finish on the motor crankshaft. The clutch has two sheave faces; one which is laterally mounted (stationary sheave), and one that can transfer in and out to interact the belt (moveable sheave). https://gearbox-cvt43185.nizarblog.com/32487222/helping-the-others-realize-the-advantages-of-gearbox-cvt