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BSA 441 exhaust silencer *Get DB's down

Bike preparation, class eligibility, technical questions.

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BSA 441 exhaust silencer *Get DB's down

Postby johnG#248 » Mon Sep 28, 2020 9:54 am

Hey Guys,
To get the noise level down to comply with track regulations, what have you been doing on some of the older / loud bikes? I've got a BSA 441 with stock pipe..zero baffle ,it's a 1.5".
Is there a bit you can attach to the end of the pipe?
Trying to keep peace in the neighborhood :mrgreen:

Thanks in advance!
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Re: BSA 441 exhaust silencer *Get DB's down

Postby thelittleguy » Mon Sep 28, 2020 6:49 pm

Hey john
Try sticking a russet potato then see how far it travels
Sorry for being smart arse
How ya doing matey
Steve
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Re: BSA 441 exhaust silencer *Get DB's down

Postby johnG#248 » Mon Sep 28, 2020 8:15 pm

LOL Steve,
All good. I found the smaller turnips travel the farthest :mrgreen: and you get a superior bounce.
Maybe in 2024 when the border opens I'll track you down for a landshark
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Re: BSA 441 exhaust silencer *Get DB's down

Postby Mike Heggarty » Mon Sep 28, 2020 9:22 pm

How about an old oil filter that’s been drilled out ? Free, previously used and soggy are quieter and if the motor does smoke you can blame the filter...
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Re: BSA 441 exhaust silencer *Get DB's down

Postby Paul Brubaker » Mon Sep 28, 2020 9:50 pm

Supertrap Discs work quite well. You can get them through Fortnine. They can be finished of with a reverse megaphone style end.
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