When the force drops, springs result in the clutch to launch. Evenly spaced ridges, referred to as splines, line The within and outside with the clutch to lock in to the gears plus the clutch housing. You'll be able to browse more about these clutches in How Automatic Transmissions Perform. https://clutchplate87542.bligblogging.com/33623728/clutch-plate-for-dummies