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The Sidecar TT is a motorcycle-with-sidecar road race competition held over two legs which takes place during the Isle of Man TT festival, an annual event at the end of May and beginning of June. Between 1954 and 1976 this race was part of the Grand Prix motorcycle racing world championship. ==Engine capacity== The 1923 Isle of Man TT was the first time the Sidecar TT race was run over 3 laps (113 miles) of the Mountain Course and was won by Freddie Dixon and passenger T.W.Denney with a special Douglas banking-sidecar at an average race speed of 53.15 mph. For the 1926 Isle of Man TT Races the Sidecar TT and Ultra-Lightweight TT were dropped for the lack of entries. The Sidecar TT Race was re-introduced for the 1954 Isle of Man TT Race for Sidecars not exceeding 500 cc engine capacity and the Sidecar TT Race was run on the Clypse Course. A non-championship 750 cc class for sidecars was introduced for the 1968 Isle of Man TT Race. For the 1976 Isle of Man TT Race the event became a race held over two-legs. From 1975, the previous 500 cc and 750 classes for Sidecars was replaced by a 1000 cc engine capacity class. The new FIM Formula 2 class for Sidecars was introduced for the 1990 Isle of Man TT. * 1954–1959 Sidecars not exceeding 500 cc engine capacity. Race held on Clypse Course. * 1960–1976 World Championship Event held on Snaefell Mountain Course not exceeding 500 cc. * 1968–1974 Non-Championship event not exceeding 750 cc. * 1975–1989 not exceeding 1000 cc engine capacity. * 1990– FIM Formula 2 Sidecar race for two-stroke engines not exceeding 350 cc or four-stroke engines not exceeding 600 cc. 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「Sidecar TT」の詳細全文を読む スポンサード リンク
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