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Tech. Advice: Series 'A' 500cc/1000cc Bikes
Series ‘A’ Silencer Bracket
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<blockquote data-quote="A_HRD" data-source="post: 107402" data-attributes="member: 49"><p>Right, I have been researching the "rear exhaust bracket" issue with some vigour over the last couple of weeks.</p><p></p><p>First, I spoke to Steve at Conways. He said that given that he had only one part number for this item he surmised that there was only one type. Then he said he had a remaining one in stock - which I bought (at £eek!) - it arrived the other day and is the same as Robert's and mercurycrest's (give or take the odd tweak) - in other words, a LONG one. </p><p></p><p>Then I visited Series 'A' mates - all with Singles and all with the SHORT type - exactly as per my 2 x photos in #1 above. </p><p></p><p>Then I spent an hour or more searching my extensive archives of Series 'A' photos. These are my conclusions:</p><p></p><p><strong>Approximately 4 in 5 'A' Singles have the SHORT type. (The remainder being LONG). </strong></p><p><strong>All 'A' Twins have the LONG type - with the exception of the Factory Brochure Photo and V1001 which have the SHORT one. (The early factory photo of Phil Vincent sitting on an 'A' Twin has the LONG one). </strong></p><p></p><p>Interestingly, because of the P-Clip design around the silencer, either bracket will fit either model; but <strong>in all cases</strong> the LONG bracket provides the best support - in conjunction with the extra fixing at the silencer/pipe interface - as mentioned by Greg at #8 above. </p><p></p><p>Here's couple of mock-up photos that show you a 1935-6 original short bracket and the Conways-supplied long one. Note the different bend geometries - but ending up with pretty much the same offset. </p><p></p><p>[ATTACH=full]27163[/ATTACH]</p><p></p><p>[ATTACH=full]27164[/ATTACH]</p><p></p><p>I am being urged to get a batch of each made. But if I take it forward, they will be supplied bare of paint because with different exhaust suppliers and all sorts of tolerance variations associated with fitting such an item, some fettling and tweaking of the bracket will inevitably be required. They would be supplied on this basis. Any takers? </p><p></p><p>Peter B</p></blockquote><p></p>
[QUOTE="A_HRD, post: 107402, member: 49"] Right, I have been researching the "rear exhaust bracket" issue with some vigour over the last couple of weeks. First, I spoke to Steve at Conways. He said that given that he had only one part number for this item he surmised that there was only one type. Then he said he had a remaining one in stock - which I bought (at £eek!) - it arrived the other day and is the same as Robert's and mercurycrest's (give or take the odd tweak) - in other words, a LONG one. Then I visited Series 'A' mates - all with Singles and all with the SHORT type - exactly as per my 2 x photos in #1 above. Then I spent an hour or more searching my extensive archives of Series 'A' photos. These are my conclusions: [B]Approximately 4 in 5 'A' Singles have the SHORT type. (The remainder being LONG). All 'A' Twins have the LONG type - with the exception of the Factory Brochure Photo and V1001 which have the SHORT one. (The early factory photo of Phil Vincent sitting on an 'A' Twin has the LONG one). [/B] Interestingly, because of the P-Clip design around the silencer, either bracket will fit either model; but [B]in all cases[/B] the LONG bracket provides the best support - in conjunction with the extra fixing at the silencer/pipe interface - as mentioned by Greg at #8 above. Here's couple of mock-up photos that show you a 1935-6 original short bracket and the Conways-supplied long one. Note the different bend geometries - but ending up with pretty much the same offset. [ATTACH type="full" alt="27163"]27163[/ATTACH] [ATTACH type="full" alt="27164"]27164[/ATTACH] I am being urged to get a batch of each made. But if I take it forward, they will be supplied bare of paint because with different exhaust suppliers and all sorts of tolerance variations associated with fitting such an item, some fettling and tweaking of the bracket will inevitably be required. They would be supplied on this basis. Any takers? Peter B [/QUOTE]
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Tech. Advice: Series 'A' 500cc/1000cc Bikes
Series ‘A’ Silencer Bracket
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