Manufacturer Yamaha Motor Company Predecessor Yamaha YD1 Class Race Bike | Production 1961 - 1962 Successor Yamaha RD56 Engine 246cc two-stroke | |
The Yamaha RD48 was a two stroke 250cc Grand Prix racing motorcycle. It had two 56x50mm cylinders, disk valves, and an Oldham coupler joining the crank shafts. Weight was 100 kg and power 35PS (34.5 bhp).
It was ridden by Tanahara Noguchi and Fumio Ito in Yamaha's first GP on Sunday, 21 May 1961, the French GP. Ito achieved 8th place and at the end of the 1961 season was 9th in the championship.
The engine was improved for the 1962 season generating a claimed 42 bhp at 10,000 rpm, however only the Singapore GP was entered.
References
Yamaha RD48 Wikipedia(Text) CC BY-SA