madteg
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| posted on 15/12/09 at 08:21 PM |
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New type exhaust
Have a look at ( moroso spiral flow mufflers ) i think this is a good idea instead of wadding, what do you think. Sorry don't know how to do the
linky thing
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prelude1980
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 posted on 15/12/09 at 08:26 PM |
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Linky
here you go
Speed has never killed anyone. Suddenly becoming stationary... that's what
gets you.
https://www.topcashback.co.uk/ref/dodd1980
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blakep82
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| posted on 15/12/09 at 09:43 PM |
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interesting. any ideas on cost?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Chippy
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| posted on 15/12/09 at 11:18 PM |
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I always find if people don't put prices on there web sites, then I can't afford the parts.  Cheers Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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dlatch
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| posted on 15/12/09 at 11:21 PM |
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5 - 7 db drop over open collectors
don't sound like they silence much to me 
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Breaker
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| posted on 15/12/09 at 11:31 PM |
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quote:
Originally posted by dlatch
5 - 7 db drop over open collectors
don't sound like they silence much to me
Don't forget dB is a logarithmic scale.
A 3 dB drop means 50% of the original "noise"
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MikeR
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| posted on 16/12/09 at 08:47 AM |
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also remember a lot of people have cars fail track side noise at 99 to 101db. Open headers ..... got to be way more than 106db.
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MikeRJ
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| posted on 16/12/09 at 09:49 AM |
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quote:
Originally posted by Breaker
quote:
Originally posted by dlatch
5 - 7 db drop over open collectors
don't sound like they silence much to me
Don't forget dB is a logarithmic scale.
A 3 dB drop means 50% of the original "noise"
This is a common mistake, -3dB would be half a power level (e.g. electrical, optical etc.), but sound level takes into account the ears response. In
this case a 10dB drop is half the perceived sound level (though it's quite approximate and varies with frequency and sound pressure).
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buncefm
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| posted on 16/12/09 at 05:49 PM |
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anyone know of these being used yet or has anyone heard them?
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brianthemagical
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| posted on 16/12/09 at 06:41 PM |
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Seems like a poor idea to me. I assume they work by restricting the air folow, thus removing some of its energ and noise.
I'm guessing you can see the difference between the restriction this woud offer and that of a straight through silencer.
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