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A bobber, originally called a 'bob-job' from the 1930s through 1990s, is a style of custom motorcycle. The typical construction includes stripping excess bodywork from a motorcycle; removing the front fender, and shortening the rear fender, which is "bobbed" (as in bob-tail), and all superfluous parts removed to reduce weight. == History == The bob-job evolved from an earlier type of American custom motorcycle, the 'cut-down', which appeared in the late 1920s, and which was based on the Harley-Davidson 'J' series v-twin. The cut-down was created to modernize the appearance and improve the performance of the aging J-series Harley-Davidson. By removing the front fender, shortening the rear, and removing all excess accessories, the motorcycle was significantly lightened. The cut-down was also characterized by a modified frame, in which the seat tube was lowered and the wheelbase shortened, resulting in a lower, shorter machine, with a sweeping diagonal line between the steering head and rear axle. In 1933 the AMA introduced Class C racing, which stipulated only catalogued racing motorcycles could be used in sanctioned competition, with points gained towards the National Championship. Class C racers such as the Indian Daytona Scout 〔'The Harley-Davidson and Indian Wars', Girdler, 1997, MBI, St. Paul, ISBN 0-7603-0208-1〕 and Harley-Davidson WLDR and WR 〔'Harley Davidson Racing 1934-1986', Girdler, 1987, MBI, St.Paul, ISBN 0-7603-1217-6〕 were the inspiration of the 'bob-job'; these stripped-down racers had no front fender, an abbreviated rear, and no excess weight. Road riders directly copied the look of the racers for better performance and a measure of style. The first bob-jobs appeared in the mid-1930s, and tended to reflect their somber competition origins, with plain paint jobs and no extra chrome or decoration. Immediately after WW2, bob-jobs, in parallel with hot rods, were subject to increasingly decorative modifications, including extra chrome plating, metal flake paint jobs, pin striping, and colored upholstery. As early as 1946, Kenneth Howard ('Von Dutch') began modifying his Indian Scout bob-job with wild paint jobs, a smaller gas tank, raised handlebars, and exhaust pipes which turned upwards at the rear.〔'The Art of Von Dutch', Kahan, Nason, Quatrocchi, Smith, 2006, Tornado Design, Los Angeles, ISBN 0-9771118-1-4〕 Such modifications became the standard for bob-jobs, which grew in popularity, whether as show bikes 〔'Hop Up', Morton, 2002, MBI, St. Paul, ISBN 0-7603-1073-4〕 or ordinary road bikes. The bob-job evolved through the 1950s and 60s in several directions; some were strictly for the popular motorcycle and hot rod show circuit, some had a distinctive 'club bike' style, some reflected drag racing practice, and some were simply a continuation of the original Class C inspiration. Bob-jobs reflected the aesthetic tastes of their owners, and were home-built, there being no commercially produced road-going bob-job available until the late 1990s. The style has also influenced motorcycle manufacturers, such as Harley-Davidson and Honda. In the late 1990s, the term bob-job became shortened in popular parlance to 'bobber', and the style saw a resurgence in popularity in the custom motorcycle scene. The bobber continues to be favored today; although hybrid styles have emerged, such as the "bobber chopper", and "retro-bobber". Such bobbers exemplify the continuing evolution of the style, and its enduring popularity. 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「Bobber (motorcycle)」の詳細全文を読む スポンサード リンク
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