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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Noisy Exhaust
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<blockquote data-quote="harvey" data-source="post: 11467" data-attributes="member: 942"><p><strong>Silencer</strong></p><p></p><p>The original Vin silencer sounds good but to me seems a little noisy. It may be a bit on the small side to give good silencing and also low backpressure. Modern bikes have tailpipe inserts available in Demon Tweeks etc. and this idea could be used. The insert fitting dia is</p><p> too big (2") to fit the Vin tailpipe so a modification to the insert fitting dia is needed. Rest of the insert is 33mm I believe. Or make your own.</p><p> If the absorption silencers mentioned are the same size as the Vin silencer then they may not be too effective, but Demon Tweeks have various absorption types including a repackable one which is 4" dia which should be able to fit in place . This one is repackable, dismantleable, can be cut to length(!), and can take an extra silencing insert. It is however black in colour. Don't know if the overhang on the Vin system would be a problem for the 2-piece construction. Weld it up? It fits a 1-3/4"pipe so a packer is needed? </p><p> A bracket to fit the Vin would need welded to the silencer. </p><p>Demon Tweeks also have a variety of S/S units but mostly seem to be for larger pipe sizes. They do the Supertrapp mentioned by someone. </p><p>This is all from the Car catalogue .......</p></blockquote><p></p>
[QUOTE="harvey, post: 11467, member: 942"] [b]Silencer[/b] The original Vin silencer sounds good but to me seems a little noisy. It may be a bit on the small side to give good silencing and also low backpressure. Modern bikes have tailpipe inserts available in Demon Tweeks etc. and this idea could be used. The insert fitting dia is too big (2") to fit the Vin tailpipe so a modification to the insert fitting dia is needed. Rest of the insert is 33mm I believe. Or make your own. If the absorption silencers mentioned are the same size as the Vin silencer then they may not be too effective, but Demon Tweeks have various absorption types including a repackable one which is 4" dia which should be able to fit in place . This one is repackable, dismantleable, can be cut to length(!), and can take an extra silencing insert. It is however black in colour. Don't know if the overhang on the Vin system would be a problem for the 2-piece construction. Weld it up? It fits a 1-3/4"pipe so a packer is needed? A bracket to fit the Vin would need welded to the silencer. Demon Tweeks also have a variety of S/S units but mostly seem to be for larger pipe sizes. They do the Supertrapp mentioned by someone. This is all from the Car catalogue ....... [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Noisy Exhaust
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