Comments by "" (@derf9465) on "This is a single cylinder F1 engine – 20,000rpm, 300cc, 90bhp!" video.

  1. When aprilia was racing 250cc two strokes they were hitting 90 hp on the race track In the hands of valentino Rossi. Regarding vibration, wouldnt a balancing shaft do the job, like whats fitted In many motorcycle engines.
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