The first clutch is a complicated type of centrifugal clutch and is often mounted for the output close in the motor crankshaft. The clutch has two sheave faces; one that is laterally preset (stationary sheave), and one that can go in and out to interact the belt (moveable sheave). https://gearbox-cvt20752.webdesign96.com/32877739/gearbox-cvt-things-to-know-before-you-buy