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The Nimbus is a Danish motorcycle produced from 1919 to 1959 by Fisker and Nielsen of Copenhagen, Denmark, also manufacturers of "Nilfisk" brand vacuum cleaners (now Nilfisk). Three basic models were produced, all with a 750 cc four-cylinder, air-cooled in-line engine.
Nilfisk was founded in Denmark in 1906 by Peder Andersen Fisker (1875–1975) and Hans Marius Nielsen (1870–1954) as Fisker & Nielsen.Originally the company produced electrical engines as the basic component in ventilators, kitchen elevators, drilling machines and, later on, the Nimbus motorcycle.
Ratier-Figeac is an aircraft components manufacturer in Figeac, France.. From 1926 until 1930 it also built a car with a 746 cc overhead camshaft engine.. From 1959 until 1962 Ratier made motorcycles, having taken over the motorcycle business of the Centre d'Études de Moteurs à Explosion et à Combustion ().
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The first production motorcycles with hydraulically damped telescopic forks were the German BMW R12 and R17 in 1935. [2] However, undamped telescopic forks were used on bikes made by The Scott Motorcycle Company from the beginning of production in 1908, [3] and the Danish Nimbus used them from 1934 on. [4]
The single overhead camshaft was driven by a train of gears at the front of the engine. Very few 4-cylinder production motorcycles of the pre-War period had an overhead camshaft (notable examples were the first iteration of the Ariel Square Four of 1931 and the Danish Nimbus of 1934). The 63x60mm short-stroke engine produced 22 hp at 4,000rpm ...
The BSA B40 was a series of 350 cc (21 cu in) unit construction single-cylinder OHV four-stroke motorcycles made by the Birmingham Small Arms Company. Developed from the BSA C15, the machines were produced between 1961 and 1967 for civilian use. Military versions were manufactured from 1967 to 1970. [5] Around 14,000 machines were built in ...
Scott produced a motorcycle with telescopic forks in 1908, [2] [3] and would continue to use them on some models until 1931. [4] In 1935 BMW became the first manufacturer to produce a motorcycle with hydraulically damped telescopic forks, [5] although the Danish Nimbus company had un-damped telescopic forks in production in 1934.