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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet silencer
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<blockquote data-quote="Bill Thomas" data-source="post: 110130" data-attributes="member: 485"><p>Has anybody put a Road ish, Comet on a Dyno', I would be interested in knowing how long the silencer should come out the back.</p><p>I proved many years ago with my Blue Twin, That it can make a lot of difference.</p><p>On a 1/4 mile sprint, I had 2 pipes ending at the rear wheel spindle, Brother Ron welded 2 . 6" extensions,</p><p>It ADDED a second to my times, I then sawed 3" off each pipe, Got half a second back !, Then went back to the Wheel spindle and got my times back to normal.</p><p>I have seen silencers ending in line with the wheel rim and some the back edge of the tyre.</p><p>I have seen a photo of John E. Of fork Fame, With his sticking out the back a lot more !!.</p><p>I think, There is Power to be found or lost !!, Just because of a few inches, But it must look right for the Road !,</p><p>So no silly short pipes that some used in Racing many years ago.</p><p>Cheers Bill.</p></blockquote><p></p>
[QUOTE="Bill Thomas, post: 110130, member: 485"] Has anybody put a Road ish, Comet on a Dyno', I would be interested in knowing how long the silencer should come out the back. I proved many years ago with my Blue Twin, That it can make a lot of difference. On a 1/4 mile sprint, I had 2 pipes ending at the rear wheel spindle, Brother Ron welded 2 . 6" extensions, It ADDED a second to my times, I then sawed 3" off each pipe, Got half a second back !, Then went back to the Wheel spindle and got my times back to normal. I have seen silencers ending in line with the wheel rim and some the back edge of the tyre. I have seen a photo of John E. Of fork Fame, With his sticking out the back a lot more !!. I think, There is Power to be found or lost !!, Just because of a few inches, But it must look right for the Road !, So no silly short pipes that some used in Racing many years ago. Cheers Bill. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet silencer
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