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The Triumph Thunderbird is a British motorcycle that was introduced by Triumph in 1949 and produced in many forms until 1966.〔Bacon 1995, p. 52.〕 The name was used three more times for new and distinct Triumph models. ==Original Triumph: 6T Thunderbird== To capture the American market, the 6T Thunderbird used a variant of the earlier Speed Twin's parallel twin engine, bored out from 500 cc to 650 cc to give the added horsepower American customers demanded.〔Davies 1998, p. 105.〕 The concept of enlarging the Speed Twin, the Thunderbird name and its 'paper dart' logo were thought up by managing director Edward Turner on one of his regular trips to Triumph's operations in the USA. The 'paper dart' logo was embossed onto the chain case cover on Thunderbirds from 1955 to 1962 and can be seen upon closer examination on the supplied photograph of the 1962 model. Previously, it appeared as a decal on the headlamp nacelle. The 6T Thunderbird was launched publicly at Montlhéry near Paris, where three standard-production bikes were ridden around a circuit by a team of riders who between them averaged a speed of over a distance of . All three machines were ridden to the circuit and back to the Meriden factory.〔Davies 1998, p. 108.〕 Triumph obtained further lasting publicity with Marlon Brando's 1953 motion picture ''The Wild One'', in which he rode a 1950 6T Thunderbird. In the book ''Triumph Motorcycles In America'', there is reproduced a letter from Triumph's importers objecting to the producers as to the use of their machine in this film about rowdy motorcycle gangs.〔''Triumph Motorcycles In America'' by David Gaylin & Lindsay Brooke (Motorbooks International 1993) ISBN 0-87938-746-7〕 From 1960, the Thunderbird acquired Turner's rear fairing nicknamed the 'bathtub' on account of its shape. This unpopular feature, dropped quickly in the USA market, remained in ever-abbreviated forms for the home market until disappearing altogether for the final year of production, 1966. Before then, in 1963, the Thunderbird, along with Triumph's other 650 cc models, was given the Turner-designed unit engine. Throughout this time, however, the Thunderbird retained its distinctive nacelle.〔''Super Profile: Triumph Thunderbird'' by Ivor Davies (Haynes 1984) ISBN 0-85429-353-1〕 A 1966 Thunderbird was prominently used by the leads in the popular 2006 romance film, Once. 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「Triumph Thunderbird」の詳細全文を読む スポンサード リンク
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