Tags: Motorcycle.
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 11000rpm. 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.
