The principal clutch is an advanced sort of centrifugal clutch and is often mounted into the output stop from the engine crankshaft. The clutch has two sheave faces; one which is laterally preset (stationary sheave), and one that can go in and out to engage the belt (moveable sheave). https://gearboxcvt64196.blogsidea.com/38676408/the-best-side-of-cvt