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AJS Model D
The AJS Model D is a British motorcycle made by A. J. Stevens & Co. Ltd in Wolverhampton between 1912 and 1925. With production halted by the First World War AJS managed to develop the Model D into a popular sidecar machine and it was eventually replaced by the larger capacity AJS Model E.
==Development==
In 1905 the Stevens Motor Manufacturing Company built a V-twin motorcycle powered by a JA Prestwich Industries Ltd motor, with leading-link front forks and a swinging fork at the rear. A new company, A J Stevens & Co (AJS), was founded in 1909 to manufacture motorcycles and at the 1912 London Motorcycle show they launched the 698cc side valve AJS Model D. Featuring cylinders at 50 degrees and chain drive to a three speed countershaft gearbox with a hand gear change, the original engines had quickly removable cylinder heads but after problems with oil leaks a more permanent head was specified for 1913.〔 The side valve engine was lubricated by a 'total loss' system operated by a hand pump. Ignition was achieved with a Splitdorf Magneto and the fuel system featured an Amac automatic carburettor. The silencer was made from cast aluminium and the frame was a tubular 'diamond' construction, with Brampton bi-flex front forks, which had an unusual two way movement, and quickly detachable wheels. The sidecar version of the Model D proved particularly successful and became so popular that AJS were not able to meet demand.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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