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The Hesketh V1000 is a OHC V-twin motorcycle with 4 valves per cylinder. It was originally designed and built by Hesketh Motorcycles in Daventry, Northamptonshire. Sales proved disappointing as the motorcycle was expensive and, at 86 bhp, it was somewhat underpowered given its hefty dry weight of . Some 149 V1000 motorcycles were produced before the company was wound up in August 1982, after which time Mick Broom continued development and production. In 2010 the assets were taken over by entrepreneur Paul Sleeman, who resurrected the brand with a renewed limited production run. ==History & development== Lord Alexander Hesketh had been planning the production of a new motorcycle since 1974 and began talks with engine specialists Westlake in 1977 about the proposed development of a big V-twin. Hesketh Motorcycles PLC was formed in 1981, a purpose built factory was set up to manufacture the V1000 in Daventry, and production began in 1981. Styled by John Mockett, who later went on to design the Triumph Rocket III, the Hesketh V1000 was conceived as a luxury sports machine that could save the British motorcycle industry.〔(【引用サイトリンク】title=Hesketh V1000 )〕 The engine was specially developed by Weslake as an air-cooled 90° V-twin with bore and stroke, giving a displacement of 992 cc. With a one piece cast crankshaft and aluminium jackets on iron cylinder barrels and alloy cylinder heads, the V1000 had four valves per cylinder and an overhead camshaft. The V1000 had electronic ignition and a Lucas alternator and starter motor. Lubrication was semi wet-sump 〔http://www.ashonbikes.com/content/semi-dry-sump-lubrication〕 and the gearbox was a five-speed constant mesh to a sealed roller chain final drive. Front suspension includes custom yokes machined from solid alloy billets, and conventional rear suspension is provided by twin Marzocchi shocks. The chain drive sprocket was concentric with the swinging arm pivot, an arrangement to keep the drive chain tension constant, irrespective of the movement of the swinging arm. The alloy wheels, anodised either gold or black, were neither forged nor cast, but were made up from two sheet alloy pressings, riveted together. The frame was available either painted black or nickel-plated. After the 1982 company collapse, the V1000 received several updates to address early problems, including digital engine management, and modification to suspension, brakes, wheels, engine and gearbox.〔http://www.odd-bike.com/2012/11/hesketh-v1000-immortal-aristocratic.html〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hesketh V1000」の詳細全文を読む スポンサード リンク
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