The primary clutch is a complicated type of centrifugal clutch and is often mounted on the output stop on the engine crankshaft. The clutch has two sheave faces; one that is laterally mounted (stationary sheave), and one which can move out and in to engage the belt (moveable sheave). https://gearboxcvt76307.p2blogs.com/31433530/the-5-second-trick-for-gearbox-cvt