Synchromesh. GCSE Bitesize: Gears: 1. Gear Types. Constant mesh gearbox. Sliding mesh gearbox. The Gearbox. Clutch. If you drive a manual transmission car, you may be surprised to find out that it has more than one clutch.
And it turns out that folks with automatic transmission cars have clutches, too. In fact, there are clutches in many things you probably see or use every day: Many cordless drills have a clutch, chain saws have a centrifugal clutch and even some yo-yos have a clutch. Dog Leg. The following animation shows you the internal workings of a four-speed transmission with reverse.