Technology / Motorcycle Glossary

Wet Clutch: A clutch that contains many plates that are in the oil spray of the transmission and the oil gets between the plates. The plates on wet clutches have a tendency to stick together when the bi . . . View Full Definition

Wet Sump: As part of the lubricating system of an internal combustion engine, a wet sump is a built-in oil reservoir at the base of the engine. From there oil is pumped into various engine bearings an . . . View Full Definition

Wheelbase: The horizontal distance between the ground contact points of the front and rear wheels. Wheelbase is a function of motorcycle frame length, steering axis angle, and fork offset. Wheelbase ha . . . View Full Definition

Wheelie: A wheelie is a motorcycle maneuver performed by a skilled rider to raise the front wheel off the ground and ride only on the rear wheel.

Wheelie Bar: A set of short arms that project several feet from the rear of a motorcycle to prevent or control the amount of front-end lift during massive acceleration.

Whoops or Whoop Section: Also known as whoop-de-doos. A section of track with a row of dirt mounds or moguls. Whoops are one of the most difficult obstacles on a Supercross track, as timing, throttle control and bod . . . View Full Definition

Willie G: Willie G. is short for William G. Davidson, Vice-President of Styling for Harley-Davidson. Willie G. is the grandson of one of the founders, William A. Davidson. He is known everywhere affec . . . View Full Definition

Wind Triangle: A simple triangular-shaped piece of cloth or leather worn around the neck of a motorcyclist for wind protection.

Works Racers: Racing machines built and operated by the factory.

Worm and Pinion Gear: System for turning rotational movement through 90°, in which a pinion is turned by a spirally cut gear.

WOW: WOW is short for Women on Wheels, a national women's motorcycle association.

Wrench: A wrench is a term used to describe a motorcycle mechanic.

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