In the event the tension drops, springs induce the clutch to launch. Evenly spaced ridges, referred to as splines, line the inside and outside in the clutch to lock in the gears plus the clutch housing. You may go through more details on these clutches in How Automated Transmissions Do https://emilianojkifc.bcbloggers.com/32252945/the-best-side-of-clutch-plate