The principal clutch is an advanced type of centrifugal clutch and is often mounted towards the output close in the motor crankshaft. The clutch has two sheave faces; one that is laterally mounted (stationary sheave), and one which can go out and in to engage the belt (moveable sheave). https://gearboxcvt97520.blog5star.com/32791937/the-smart-trick-of-gearbox-cvt-that-no-one-is-discussing