Hercules

In 1974 Hercules became the first company to offer a Wankel-engined motorcycle for sale to the general public. A prototype was first shown in 1970 at the West Cologne Autumn Motorcycle Show to a mixed reception and the production bike was sold as a Hercules product except in the United Kingdom, where it was marketed as a DKW motorcycle. The W-2000 had a single-rotor air-cooled engine of 294cc displacement that produced 23 hp, later increased to 32 hp. Cooling was by a large fan placed in front of the engine (and the slipstream breeze while riding) and engine lubrication was by manually adding oil to the fuel in the tank.^[6]

In 1976 Hercules launched the W-2000 Injection in which engine lubrication was from a separate oil tank via a pump. It had 18-inch wheels, a front disc brake and a rear drum brake. According to a March 1976 review in Cycle World, the handling was good but the bike's low ground clearance limited its cornering ability. That review also declared the W-2000 to be a daily commuting bike, not a sport motorcycle.

Hercules introduced a rotary-powered dirt bike (the KC-30 GS Enduro) in May 1975, but the model failed to sell due to its high price ($2,900).

The Fichtel & Sachs single-rotor engine of 300 cc swept-volume as used in the Hercules – the only commercially available engine at the time – was used as a basis by BSA's project engineer David Garside in the early 1970s when designing a twin-rotor motorcycle engine of 588 cc, which reached production as the "Norton Classic".

Production of motorcycles ceased in 1996.

Referenced website: https://en.wikipedia.org/wiki/Hercules_(motorcycle)