exhaust noise level

multi600 · 25-Apr-2006, 16:48

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

NBs996 · 25-Apr-2006, 17:24

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.

CK · 25-Apr-2006, 17:57

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)

phoenix n max · 25-Apr-2006, 18:11

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.

Maxypriest · 25-Apr-2006, 18:22

How loud is a stright through? I have access to a sound meter... might give it a try... Brapp Brapp.

multi600 · 25-Apr-2006, 19:14

Mine is straight through and louder than a race termi system. Be interesting if you could do a check.

Mike

domski · 25-Apr-2006, 19:58

I think the trackday sessions on Friday are 98db though.

We're taking db killers

phoenix n max · 25-Apr-2006, 20:06

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

twpd · 25-Apr-2006, 20:12

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.

multi600 · 26-Apr-2006, 10:06

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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25-Apr-2006, 17:57	#3
CK Ducati Corse Posts: 3,350 Join Date: Jan 2003 Location: NW Surrey 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) Reply

25-Apr-2006, 18:11	#4
phoenix n max Registered Forum User Ducati Meccanica Posts: 2,213 Join Date: Dec 2004 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. Reply

25-Apr-2006, 18:22	#5
Maxypriest Registered Forum User Mille Posts: 115 Join Date: Nov 2005 Mood: Fed up I'm not racing. :-( How loud is a stright through? I have access to a sound meter... might give it a try... Brapp Brapp. Reply

25-Apr-2006, 19:14	#6
multi600 Registered Forum User 888 at Last !!! Posts: 938 Join Date: Dec 2004 Location: Southampton Mood: Hopefull Mine is straight through and louder than a race termi system. Be interesting if you could do a check. Mike Reply

25-Apr-2006, 19:58	#7
domski DSC Club Member WSB Hero Posts: 9,994 Join Date: Jan 2005 Location: Devon I think the trackday sessions on Friday are 98db though. We're taking db killers Reply

26-Apr-2006, 10:06	#10
multi600 Registered Forum User 888 at Last !!! Posts: 938 Join Date: Dec 2004 Location: Southampton Mood: Hopefull 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 Reply