The first clutch is an advanced kind of centrifugal clutch and is usually mounted on the output close from the engine crankshaft. The clutch has two sheave faces; one which is laterally fastened (stationary sheave), and one which can move in and out to interact the belt (moveable sheave). https://gearboxcvt64196.blogtov.com/12818954/fascination-about-gearbox-cvt