The key clutch is an advanced sort of centrifugal clutch and is usually mounted towards the output close in the engine crankshaft. The clutch has two sheave faces; one which is laterally set (stationary sheave), and one that can transfer in and out to engage the belt (moveable sheave). https://gearboxcvt66318.eedblog.com/32422653/gearbox-cvt-secrets