Honda RC115

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Honda
Honda RC115.jpg
Ralph Bryans ' machine (1965)
RC115
Manufacturer
Production period 1965 to 1966
class motorcycle
design type Racing motorcycle
Motor data
Two cylinders - four-stroke engine , four valves per cylinder, DOHC
Displacement  (cm³) 49.8 cm³
bore × stroke: 35.5 × 25.14 mm
Power  (kW / PS ) 14 hp at 21,500 rpm (1965)
Top speed (  km / h) 175 km / h
transmission 9 gears
Empty weight  (kg) 50 kg

The Honda RC115 is a racing motorcycle from the Japanese motorcycle manufacturer Honda , which was used in the 1965 motorcycle world championship . Ralph Bryans won the title in the smallest displacement class with this machine.

History and technology

It was not until 1962 that the motorcycle world championship was held in the class up to 50 m³ displacement and immediately dominated by the factory machines from Suzuki and Kreidler . Honda was the only manufacturer to take part in the world championship with a machine with a four-stroke engine , which, however , had little chance against the competition with two-stroke engines . The following year, Honda withdrew from the smallest class and entered the 1964 motorcycle world championship with an improved model. The newly developed two-cylinder engine achieved an output of 13 hp at 19,700 rpm. For the 1965 season, the output was increased to 14 hp at 21,500 rpm, a speed that has not been exceeded by any motorcycle engine to date (as of 2017). The air-cooled engine with four valves per cylinder had camshafts driven by spur gears. The power was transmitted to the rear wheel via a nine-speed gearbox and chain. The engine hung in a tubular backbone frame, a telescopic fork guided the narrow 2.00-18-inch front wheel and a swing arm with two spring struts the 2.25-18-inch rear wheel. The RC115 had a duplex drum brake at the rear and a caliper- like rim brake at the front.

For the 1966 season the Honda RC116 version appeared, but it was beaten by Hans Georg Anscheidt on Suzuki. After Honda won all design titles in the two-wheeler classes (50 cm³, 125 cm³, 250 cm³, 350 cm³ and 500 cm³ displacement) in the motorcycle world championship in 1966 , the Japanese manufacturer withdrew from motorsport. A three-cylinder four-stroke engine with a displacement of 50 cm³ and an alleged output of 25 hp at 25,000 rpm, which had already been fully developed by Honda, was never used.

literature

  • Siegfried Rauch : Famous racing motorcycles - 150 old and new racing machines for Grand Prix use . 2nd Edition. Motorbuch Verlag, Stuttgart 1980, ISBN 3-87943-590-1 .

Web links

Individual evidence

  1. ^ Rauch, p. 76.
  2. ↑ Rauch, p. 77.
  3. ^ Rauch, p. 76.