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repack "silencer" (amplifier)?
#646979 04/03/16 9:46 am
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Fellas, is there any way to repack the glass wool in the Goldie exhaust "silencer?"

Thing is ungodly loud.


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Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #646986 04/03/16 10:15 am
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No way I know, other than cutting the end off and re-welding, with obvious cosmetic issues..


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Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #647000 04/03/16 11:30 am
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Never known of a B.S.A. Gold Star silencer to have glass wool. The term silencer i think was a a polite way of saying 'but officer,
this was what B.S.A fitted'. In this politically correct world it's great to have something which is noisy and yet legal.
Goldie John.

Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #647023 04/03/16 2:44 pm
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John's probably correct - I don't think there was anything in the 'silencer' (BSA did say the Clubmans bike was not suitable for road use, I believe), but that it relied on the number, size and the way the holes were made to tone down the most offensive frequencies!

Last edited by Kerry W; 04/03/16 2:44 pm.

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Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #647089 04/04/16 5:04 am
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So... Earplugs?


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Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #647130 04/04/16 11:00 am
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Ride faster -stay ahead of the sound!


No generalisation is wholly true, not even this one.
Oliver Wendell Holmes
Re: repack "silencer" (amplifier)?
Kerry W #647218 04/05/16 2:22 am
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One of my silencers has a single perforated tube going from inlet to outlet, so I cut a hole in the underside of the can where it was least visible, stuffed some packing material inside and welded it up again.

The hard metallic sound was much reduced, but the volume as such was unchanged.

Re: repack "silencer" (amplifier)?
Ole K #647260 04/05/16 1:09 pm
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Stuff some
Stainless steel wool
[Linked Image]
Up your silencer . ( sorry , there is no polite way to say this )
It comes from special sheep
[Linked Image]
Then plug the end with one of these
Universal baffles things
[Linked Image]
If you dont like the sound
It can all be undone ... and more or less wool added .
.

Re: repack "silencer" (amplifier)?
quinten #647349 04/06/16 1:38 am
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I have tried an universal baffle. It worked fine on my A65, but it completely strangled the performance on the Gold Star.

So I can only recommend it as a temporary measure if you need to pass a noise test.

Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #647420 04/06/16 12:20 pm
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Thanks fellas. I see a nice set of earplugs in my future.


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Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #647433 04/06/16 1:26 pm
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Try the baffle .
Why ? ,
because its hard to hear all the compliments
... like , how cool and quiet your bike is
With earplugs on
inside a helmet .
.

Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #647456 04/06/16 4:15 pm
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I love the GS silencer sound, and it is great on a rorty 650 as well, for example the siamesed pipe on tri or bsa..

For some reason, of all that I have forgotten, I remember this from some GS literature somewhere..

Quote
I want the one that twitters, mate.


Anyway...

so...well....does it still twitter with all that baffley stuff?

Interesting many of the repro muffler suppliers mention the factory offset baffle in their adverts. Copied from each other or a hard won lesson with grumpy customers' returns?..




Re: repack "silencer" (amplifier)?
stubbicatt R.I.P. #647665 04/07/16 8:52 pm
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I've mentioned this before ... On my much modified GS 'special' I've modified a Twitter by cutting it open at the weld and cutting out the front perforated tube at the inlet. And then fabbed a reverse cone piece to weld on to the rear perf tube. But first before welding pack rear portion with SS 'pot scrubbers'. A pro welder friend of mine then nicely welded up the outer case rotating it on a pie of pipe in his vise. Nice

After a fair amount of cut and fit you can then have a silenced reverse cone mega that's lost the sharp sonic crack of the OEM Twitter. And it hopefully gives a bit more power? I dunno, but She's a runner, pulls hard, goes fast and doesn't deafen the public when on the gas. 'On and on we go' sheeze.

Last edited by dave - NV; 04/08/16 9:13 pm.

Dave - NV

Moderated by  Rich B 

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