Motorcycle Glossary of Terms

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Hardly Ableson - Term to wind up Harley Davidson riders.

Hairpin - A slow, tight bend, sometimes 180-degree turn.

Helical gears - Gear teeth are slightly curved and produce less gear noise than straight-cut gears. Often used for primary drives.

Helicoil - A thread insert repair system. Commonly Used as a repair for stripped spark plug threads.

High camshaft - Mounted high up on the engine to shorten the pushrod in an ohv formation.

Highside - A type of motorcycle crash when the rear wheel slides and suddenly grips usually throwing the rider over the handlebars.

Hog - slang for Harley Davidson.

Horsepower - A form of measuring an engine's strength, see BHP.

HT (High Tension) - Description of the electrical circuit from the secondary winding of the ignition coil to the spark plug.

Hurley Furgeson - Term often used to wind up Harley Davidson riders.

Hydraulic - A liquid filled system used to transmit pressure from one component to another. Common uses on motorcycles are brakes and clutches.