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Old 25-Apr-2006, 17:48
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multi600 multi600 is offline
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exhaust noise level

Is there a quick/easy way to check the noise level of your exhaust, as we have Assen and Castle Combe coming up. Not to mention the DD rules on noise limits? It would be nice to know be for race day if we were within the limit. I suspect that some of the bikes may not be. I know my RS250 was measured at 104.5 last time I took it to Castle Combe which suprised me as it was the standard exhaust.


Mike
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Old 25-Apr-2006, 18:24
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NBs996 NBs996 is offline
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Only if you know someone with with a noise meter! I think the meter should be held 0.5m from the zorst outlet at a 45° angle, but at a CC trackday I've heard they get a little closer!
I'd be suprised if any of them went over 100 dbA
Mine read only 96 at CC last year.
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Old 25-Apr-2006, 18:57
CK CK is offline
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ours are about 97, tho see a post I put up last night about baffles.
Will await Fil2's answer from the RC about the trackday info, tho we are all ok for the racing Mike (I would think)
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Old 25-Apr-2006, 19:11
phoenix n max phoenix n max is offline
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I went and read the destructions, it said 104 and thought we'd be ok, Max was 96 lastyear, Dessie is a tad louder but not by that much i'd have thought.
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Old 25-Apr-2006, 19:22
Maxypriest Maxypriest is offline
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How loud is a stright through? I have access to a sound meter... might give it a try... Brapp Brapp.
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Old 25-Apr-2006, 20:14
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multi600 multi600 is offline
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Mine is straight through and louder than a race termi system. Be interesting if you could do a check.

Mike
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Old 25-Apr-2006, 20:58
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DSC Member domski domski is offline
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I think the trackday sessions on Friday are 98db though.

We're taking db killers
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Old 25-Apr-2006, 21:06
phoenix n max phoenix n max is offline
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Quote:
Originally posted by domski
I think the trackday sessions on Friday are 98db though.

We're taking db killers

I may have to steal them for Dessie
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Old 25-Apr-2006, 21:12
twpd twpd is offline
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Quote:
Originally posted by multi600
Is there a quick/easy way to check the noise level of your exhaust, as we have Assen and Castle Combe coming up. Not to mention the DD rules on noise limits? It would be nice to know be for race day if we were within the limit. I suspect that some of the bikes may not be. I know my RS250 was measured at 104.5 last time I took it to Castle Combe which suprised me as it was the standard exhaust.


Mike

Go to any Maplins electronics store and buy a sound meter for between £25 and £50. Bish-bosh. Problem sorted...unless your bike is too loud.

I used a meter from work instead.
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Old 26-Apr-2006, 11:06
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multi600 multi600 is offline
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Guess what we have a test meter at work so I will give mine a check tonight. What sort of rpm will they be measuring at?

Mike
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