The primary clutch is an advanced type of centrifugal clutch and is usually mounted on the output close from the motor crankshaft. The clutch has two sheave faces; one which is laterally mounted (stationary sheave), and one which can go out and in to interact the belt (moveable sheave). https://knoxxwvtr.creacionblog.com/32199360/the-5-second-trick-for-gearbox-cvt