Hercules (motorcycle)

This article is about the German manufacturer. For the UK company of the same name, see Hercules Cycle and Motor Company.
Hercules Wankel 2000.

Hercules was a brand of motorcycle manufactured in Germany until 1996.

The Hercules Company was founded in 1886[1] and began producing motorcycles in 1904. It was merged with Zweirad Union after being purchased by ZF Sachs in 1963.[2]

In the 1950s and 1960s Sachs was the largest European fabricator of two-stroke motorcycle engines.[3] Many of these engines were used in the Hercules line of small motorcycles, scooters and mopeds.

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 Fall 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 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.[4]

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.[4]

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).[4]

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".[5]

Partial product line

Hercules S125 of 1938-1943

References

  1. ↑ Deutsche autos, Motorbuchverlag
  2. ↑ History - Official Sachs Bikes website Archived February 7, 2009 at the Wayback Machine
  3. ↑ dropbears.com. "Hercules Motorcycles". cybermotorcycle.com. Retrieved 3 September 2014.
  4. 1 2 3 Williams, Greg. "Hercules W-2000: The First Rotary-Powered Motorcycle". Motorcycle Classics March/April 2012. Motorcycle Classics. Retrieved 7 December 2012.
  5. ↑ Motorcycle Mechanics, December 1974, pp.41–43. NVT's Wankel. Interview with David Garside by John Robinson. Intro: "After five years of research and rather touchy secrecy, Triumph suddenly announced their very own version of a rotary engine to the Press and put one on show at Cologne". Garside: "We started with the only commercially available engine, the Fichtel and Sachs, which gave about 20hp. So our first thought was to double the rotors to get around 40hp and then by development...we've got it up to target. On the test bench we've even had 80hp running with open exhausts". Accessed 2014-05-12
  6. ↑ http://www.cybermotorcycles.com/gallery/hercules/index.htm[]

External links

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