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General Chat (Vincent Related)
Comet Top Speed
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<blockquote data-quote="davidd" data-source="post: 129710" data-attributes="member: 1177"><p>A stock Comet has about 23-4 BHP at the rear wheel, so 80-85 mph is likely the best it can muster. Most of the Grey Flash racers that are running initially made power at about 26 BHP from the rear wheel. The engines perform much better once they are tuned a little better. David Tompkin's engine started with 37 BHP with a high-compression piston and a Mk2 cam. With a good megaphone and pipe, it got about 2 BPH more. The bike is generally geared to hit 105 mph on the straight because that is doable, but that is using the speed from the corner previous to the straight as a flying start.</p><p></p><p>The Comet chassis is as good as the twin for high speed. It is not very worrisome at 100 mph unless something is wrong with the chassis set-up.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 129710, member: 1177"] A stock Comet has about 23-4 BHP at the rear wheel, so 80-85 mph is likely the best it can muster. Most of the Grey Flash racers that are running initially made power at about 26 BHP from the rear wheel. The engines perform much better once they are tuned a little better. David Tompkin's engine started with 37 BHP with a high-compression piston and a Mk2 cam. With a good megaphone and pipe, it got about 2 BPH more. The bike is generally geared to hit 105 mph on the straight because that is doable, but that is using the speed from the corner previous to the straight as a flying start. The Comet chassis is as good as the twin for high speed. It is not very worrisome at 100 mph unless something is wrong with the chassis set-up. David [/QUOTE]
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