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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet silencer
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<blockquote data-quote="Monkeypants" data-source="post: 110773" data-attributes="member: 2708"><p>After removing the blue patch on the Spares Co. spiral baffle silencer for about the 20th time I tried messing around with an old silencer.</p><p>Someone suggested cutting the end cap off and removing the innards, then replacing with a fluted tube etc.</p><p>I have had luck Tig welding with 304 or 308 stainless rod on chromed silencers. Once the weld was polished things looked factory fresh.</p><p>This time I made the mistake of cutting the end cap right at the joint, which turned out to be a brazed connection.</p><p>Tig welding and brazing do not mix well!</p><p>Should have moved the cut in a quarter inch, then it would have welded up ok.</p><p>I don't know the supplier of this silencer but it also was of the spiral baffle type.</p><p>It was very restrictive though, much moreso than the Spares Co. item.</p><p>First I tried tacking the end back on with nothing inside the silencer. Sounded nice but loud on startup. Sounded godawful ( flat and loud) on dyno hill . Speed on the hill was exactly the same as with the Spares Co. spiral baffle silencer fitted, hit at 70 mph and hold at 70mph all the way to top.</p><p>I took it apart and tacked in a ventilated1 1/2' tube. This helped a bit with the sound but somehow I lost 2 mph on the hill.</p><p>I tried it several times and it pulled down rather than held each time.</p><p>And still sounded awful!</p><p>Now it was looking awful too.</p><p>So after reading this thread and Bill's recommendation, I ordered an Armours SS straight thru silencer.</p><p>It arrived yesterday. It looks well made and fitted nicely. There is no clamp ring needed, that is built into the pipe, which is a neat solution.</p><p>Sound is quite loud but mellow, I like it.</p><p>Power on the hill was the best yet.</p><p>It was very satisfying to see the 5" Chronometric click up to 72 mph halfway up the hill then hold that to the top.</p><p>I did 4 runs, at which point it is time to leave ( speed limit is 35 mph)</p><p>Everytime the speedo clicked up from 70 to 72 and held.</p><p>Price was very reasonable too, just over $200 CDN shipped. I believe the Spares Co silencers are about $4-500 CDN.</p><p> I don't expect it will ever go blue, there is just no restriction. It will go that very pleasing straw gold colour, that's already started to occur.</p><p>It's also a fairly light silencer.</p><p></p><p>Thanks Bill</p></blockquote><p></p>
[QUOTE="Monkeypants, post: 110773, member: 2708"] After removing the blue patch on the Spares Co. spiral baffle silencer for about the 20th time I tried messing around with an old silencer. Someone suggested cutting the end cap off and removing the innards, then replacing with a fluted tube etc. I have had luck Tig welding with 304 or 308 stainless rod on chromed silencers. Once the weld was polished things looked factory fresh. This time I made the mistake of cutting the end cap right at the joint, which turned out to be a brazed connection. Tig welding and brazing do not mix well! Should have moved the cut in a quarter inch, then it would have welded up ok. I don't know the supplier of this silencer but it also was of the spiral baffle type. It was very restrictive though, much moreso than the Spares Co. item. First I tried tacking the end back on with nothing inside the silencer. Sounded nice but loud on startup. Sounded godawful ( flat and loud) on dyno hill . Speed on the hill was exactly the same as with the Spares Co. spiral baffle silencer fitted, hit at 70 mph and hold at 70mph all the way to top. I took it apart and tacked in a ventilated1 1/2' tube. This helped a bit with the sound but somehow I lost 2 mph on the hill. I tried it several times and it pulled down rather than held each time. And still sounded awful! Now it was looking awful too. So after reading this thread and Bill's recommendation, I ordered an Armours SS straight thru silencer. It arrived yesterday. It looks well made and fitted nicely. There is no clamp ring needed, that is built into the pipe, which is a neat solution. Sound is quite loud but mellow, I like it. Power on the hill was the best yet. It was very satisfying to see the 5" Chronometric click up to 72 mph halfway up the hill then hold that to the top. I did 4 runs, at which point it is time to leave ( speed limit is 35 mph) Everytime the speedo clicked up from 70 to 72 and held. Price was very reasonable too, just over $200 CDN shipped. I believe the Spares Co silencers are about $4-500 CDN. I don't expect it will ever go blue, there is just no restriction. It will go that very pleasing straw gold colour, that's already started to occur. It's also a fairly light silencer. Thanks Bill [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet silencer
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