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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Vincent Silencer
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<blockquote data-quote="John Emanuel" data-source="post: 18252" data-attributes="member: 1007"><p>As far as I know only the original Carbjector and the VOSC silencers have a true spiral baffle. There is, however, a vital difference between them. The spiral of the Carbjector is the full diameter of the outer tube, wereas the VOSC has the baffle welded within a perforated tube of only 2 1/4inches. This is flaired out at each end and welded to the inside of the silencer. The gas passage through the spiral is only around half of the cross sectional area of the exhaust pipe. Although there is an annular gap between the perforated tube and the outer. The gas presumably finds it difficult to pass through the perforations, down this gap and back through the perforations, resulting in the performance being seriously affected, not just at the top end but throughout the range. Also, it's not particularly quiet!</p></blockquote><p></p>
[QUOTE="John Emanuel, post: 18252, member: 1007"] As far as I know only the original Carbjector and the VOSC silencers have a true spiral baffle. There is, however, a vital difference between them. The spiral of the Carbjector is the full diameter of the outer tube, wereas the VOSC has the baffle welded within a perforated tube of only 2 1/4inches. This is flaired out at each end and welded to the inside of the silencer. The gas passage through the spiral is only around half of the cross sectional area of the exhaust pipe. Although there is an annular gap between the perforated tube and the outer. The gas presumably finds it difficult to pass through the perforations, down this gap and back through the perforations, resulting in the performance being seriously affected, not just at the top end but throughout the range. Also, it's not particularly quiet! [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Vincent Silencer
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