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Castagna was the only Italian professional speedway rider in the history of the sport, and qualified five times for an Individual World Final. Another former rider, Giuseppe Marzotto makes the GM speedway engines. Speedway in Germany was overshadowed by its more popular track racing variant Sandbahn .
From 1903 to 1908 complete motorcycles were produced [8] from the development of the first overhead valve motorcycle engine to be produced in the UK. [9]After that the factory concentrated on supplying its engines to other manufacturers, including Brough Superior, [10] Triumph Motorcycles, [11] A. J. Stevens & Co. Ltd, Enfield Cycle Co, Hazlewoods Limited, Zenith Motorcycles, Grindlay Peerless ...
Since Harry Weslake's death, the company worked on a variety of engines under Michael Daniels, Harry Weslake's stepson, including the Diesel Air Dair 100, [46] Weslake A80 and the Excelsior-Henderson X-Twin. [47] Bruce Penhall rode a Weslake speedway motorcycle to many successes in the early 1980s, including two World Individual Speedway ...
ESO was founded by a motorcycle racing driver Jaroslav Simandl, and made bikes in 250, 350, and 500 cc, primarily for speedway, moto-cross and ice racing. [1] [2] Engines were sourced from J.A.P. during the first year, and then an engine of ESO's own after 1950, first copied from J.A.P. and later of their own design. [3]
The Crocker Motorcycle Company is an American manufacturer, based in Los Angeles, California, founded by Albert Crocker.Located at 1346 Venice Blvd, Crocker produced a series of kits and whole motorcycles between 1931 and 1941: an overhead-valve conversion kit for the Indian 101 Scout motor (1932), a single-cylinder speedway racer (1934), powerful V-twin road motorcycles (1936–40), and the ...
This was an 8 hp engine of 964cc, 85mm bore and 85mm stroke. [8] Initially water cooled, from 1913 it was also available air-cooled. In the 1920s Douglas built the first disc brakes, and had a Royal Warrant for the supply of motorcycles to the Princes, Albert and Henry. Douglas DT 500 cc 1929. Douglas motorcycles also became popular in dirt ...
In motocross, the firm built an impressive record before its four-stroke engines became superseded by two-stroke engines. In speedway racing, dirt-track racing, and ice racing where four-stroke engines were still at an advantage, the firm remained a dominant force. The separate factory where these competition motorcycles were built became a ...
The JAP Speedway engine had dominated the category initially but the Manx was capable of producing significantly more power and became the engine of choice. Many complete motorcycles were bought in order to strip the engine for 500 cc car racing, as Norton would not sell separate engines.