When the strain drops, springs trigger the clutch to launch. Evenly spaced ridges, named splines, line the inside and out of doors in the clutch to lock in to the gears and also the clutch housing. You'll be able to study more about these clutches in How Computerized Transmissions Operate. https://clutch-plate50368.blogtov.com/13515450/an-unbiased-view-of-clutch-plate