15.3 seconds on a road going machine
Performance tuning
NSRA Long Marston 1993
Road there on my GP, arrived by RAC (thanks to broken rear hub). Motor was a TS225, YZ piston, PM pipe, 36mm smoothbore. We also built a one off for the scooter club (Bad Company SC) which was a similar design with a liner. That one did 18 seconds as no-one could keep the power on over about 60mph as it handled like a chop with no weight over the front end - good fun though. I managed a 15.3 at 80mph which seemed to be the fastest of the road machines there.
New motor:Under development The next motor is based around a TS. The stroke is 64mm with a 120mm Rotax rod. To achieve this the cases needed a considerable amount of welding and machining to ensure that the crank fitted but also retained stength as a very deep channel is needed in the cases for the conrod to have clearance. Additionally the cylinder needs to be 11mm longer than standard, using a Wiseco Suzuki TS250 piston. Read more here...
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15.3 seconds on a road going machine
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Performance tuning
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