Some New Development Aspects of 2-Stroke Cycle Motorcycle Engines

This paper covers certain aspects of the 2-stroke cycle, high-speed, high-output racing engine developed by Yamaha.

Based upon design concepts and data from the development of the general racing engine, as well as the development of Grand Prix racing engines, this material is especially concerned with intake, scavenging, and exhaust systems. In addition, data on cooling and lubrication systems are presented.