Completing the Oval Piston Engine

Key problems in the team's engine design included the gear train and valve system. In the former, a reduction gear was initially used to turn the cam at half the rate of crank revolution. However, since it had been a source of frequent failures, a normal cam-reduction gear train system was adopted.... Read more ...



The NR500 (2X) machine that helped Kengo Kiyama to win the 1981 Suzuka 500-Kilometer Race, giving Honda its first victory with the oval piston engine
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