Performance trends are shown of 125-cc engines, developed by Yamaha Motor Co, Ltd, for motor cycles from 1954 to 1966; methods investigated for obtaining high outputs include increasing air intake passage diameter of carburetor, employing rotary disk intake valve, choosing high compression ratio, selecting best timing for intake valve and scavenging and exhaust ports, and improving exhaust system; problems involved in small two-cycle engine design, and development of separate and automatic lubrication system for two-cycle gasoline engines are described.
Some development aspects of two-stroke cycle motorcycle engines
SAE -- Paper
SAE Meeting ; 1966 Engines
1966
13 pages
Conference paper
English
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Some Development Aspects of Two-Stroke Cycle Motorcycle Engines
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