| Yamaha XS1 development story |
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Page 5 of 8
The first pre-prototype was a 650 cc engine installed in the R1 (350 cc) chassis and as target bike "Triumph" was chosen from between Triumph, BSA and Norton for further styling reference. Therefore the feeling of maneuverability and easy handling were developed based upon Triumph. The first prototype was built during the Spring of 1968. Until the end of 1969 a 2nd, 3rd, 4th and 5th prototype were built and 2.500 design modifications sheets were issued! In the Autumn of 1969 most of the technical problems were solved and the machine was ready for production. 6) Development on the technical side The basic dimensions for the bore + stroke were taken directly from the Toyota 2000 GT sportscar (75x75x6=1998 cc), which was designed and developed by Yamaha on the request of Toyota Motor Co. The stroke was just shortened by 1 mm, giving 75x74x2=654 cc.
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| Last Updated ( Friday, 01 February 2008 ) |
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