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Yamaha RD56
The Yamaha RD56 was a two stroke 250cc Grand Prix racing motorcycle. It had two 56x50mm cylinders, disk valves and an Oldham coupler joining the crank shafts. Power was 47 bhp at 11,000rpm.〔p23 MacKellar.〕 Although the engine was essentially the same as that of the RD48, the frame was a new design based on the Norton Featherbed. It featured a 7 speed gearbox. It was ridden by Yoshikazu Sunako, Fumio Ito, Hiroshi Hasegawa and Tony Godfrey for the 1963 Grand Prix season. The engine was improved for the 1964 season generating a claimed 50 bhp at 11,000 rpm.〔p25 MacKellar〕 Phil Read joined the Yamaha team and narrowly beat Redman to become Grand Prix World Champion. ==References==
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「Yamaha RD56」の詳細全文を読む
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