Every new internal combustion car and truck sold in America today is equipped with a four-stroke engine, as are the vast majority of motorcycles. Today, if you hear the loud, ringing song of a ...

Motorcycles weren't always the monocoque-framed, wide-tired, 200-mph speed machines you see today. In fact, the origins of the motorcycle date back to two-wheeled experiments in personal ...

Two-stroke engines used to be ubiquitous in dirt bike racing, thanks to their lightweight construction and horsepower. Packed in a dirt bike frame, they make a motorcycle playful in the corners and ...

Name a type of terrain, and someone, somewhere, will figure out a way to race on it. From wood-track ovals and countryside rallies to the pure chaos of the Gumball 3000, humans love to pit themselves ...

SAE Transactions, Vol. 101, Section 3: JOURNAL OF ENGINES (1992), pp. 1560-1570 (11 pages) The recent interest in two-stroke engines for automotive use has produced powerplants of such divergence that ...