How do centrifugal clutches work?

A clutch allows power to transfer from a car's engine to its transmission. A centrifugal clutch connects two nested, circular shafts, one to the car's engine and one to its transmission. By using centrifugal force, the inner shaft expands into the outer shaft and moves a car through its gears.

The clutch transfers engine revolution per minutes, or RPM, to the transmission. A centrifugal clutch's inner shaft or driving shaft has seven parts. Two diaphragm springs connect the engine shaft to two clutch shoes, which expand through centrifugal force to connect to the driven shaft. The driven shaft moves the transmission's gearbox.