Loss of friction between a tyre and the road surface allowing the wheel to spin faster than the speed of the vehicle.

The dimension between the centres of the road wheels on one axle. Also known as tread.

Loss of friction between a tyre and the road surface allowing the wheel to spin faster than the speed of the vehicle.

The throw out of a rotating shaft. In relation to drive shafts whip can create unpleasant harmonics and vibrations.

Tin based alloy used as a coating for plain steel bearings.

Standard size of thread. Old British standard.

Coil of wire used to create magnetism.

Coils of wire used to create magnetism when a current flows through them.

The bundle of cables that are bound together to form the electrical distribution system for a vehicle or system.

A locating device that sits in slots on a shaft and pulley or gear wheel. Also known as a half-round key or in some cases just key!