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View Full Version : How loud were you at Castle Combe Sprint?


KenX
02-05-2011, 07:47
After I failed noise testing last year with my standard Fireblade I was a bit concerned about my new 3" decat Milltek for the MLR Sprint. Needn't have worried, pathetic 88db, noise man told me to turn up the stereo and come back :lol:

bessell
02-05-2011, 08:02
111db :) opppsss :s

b6lee
02-05-2011, 08:16
97db when tested in the morning. But I was stopped at random in the afternoon and reached 103db :)

Baz25
02-05-2011, 10:59
I just scraped through at 104db :smthumbup

Going to have to run with a sh*ty bung in at Teesside :smthumbdo

martinw
02-05-2011, 14:12
no noise test at teeside mate:D

jamie@evotune
02-05-2011, 14:14
I was 102DB even though at a Croft trackday last year it came up at 98DB and the car has done about 200 miles since then :confused:

E5_DCB
02-05-2011, 16:07
Different sound metres calibrations etc etc.
When I use to track at combe what seemed like every weekend I never got the same result was always all over the shot.(Even tho it was tested within 10mins of getting to the track)
#One time all 5 cars including mine got 88db lol.

jamie@evotune
02-05-2011, 16:10
Different sound metres calibrations etc etc.
When I use to track at combe what seemed like every weekend I never got the same result was always all over the shot.(Even tho it was tested within 10mins of getting to the track)

4DB is quite a difference I have the same sound meter that they used at Combe and it was 102DB.

I think if sound meter make is going to be that large then they should all be using the same one a sort of industry standard as such.

Gary @ APT
02-05-2011, 16:19
exhausts do get louder over time even more so when running bigger power,

Baz25
02-05-2011, 16:19
no noise test at teeside mate:D

I might have read wrongly but i thought there was a 103db limit at the Teeside Sprint :confused:

jamie@evotune
02-05-2011, 16:40
exhausts do get louder over time even more so when running bigger power,

I agree Gary but 4DB is quite a lot when it comes to sound checks.

I think it would be good practice for all U.K circuits to use the same sound meter and sound testing guide lines when testing exhaust noise as you could go to a local circuit and pass the test then go 300 miles to another circuit and fail the test which in my eyes is wrong.

Gary @ APT
02-05-2011, 16:44
mate i think you'll find proper circuits will be having proper sound meters and calibrated too,i know snett ones are same they use for btcc

with my car they started to pull me in on drive by noise ,5 db more than anything on circuit

have just built another system and its loads better just using jetex's range of universal silencers

jamie@evotune
02-05-2011, 16:49
mate i think you'll find proper circuits will be having proper sound meters and calibrated too,i know snett ones are same they use for btcc

with my car they started to pull me in on drive by noise ,5 db more than anything on circuit

have just built another system and its loads better just using jetex's range of universal silencers

Yeah I think our car could do with a extra silencer in the mid section just to bring the noise down a bit as I think on a drive by meter it would easily trip it over.

John@EvoBreakers
02-05-2011, 16:55
I was 96db,, every time i have been noise tested i have been the same.

neverneverman
02-05-2011, 17:13
A few years ago mine was about 102>104 at all events ,then at Combe 117Db ..

This year i made a new exhaust for the event ..99Db @ 5500..

martinw
02-05-2011, 17:54
I might have read wrongly but i thought there was a 103db limit at the Teeside Sprint :confused:

i have done loads of track days at teeside and they have never noise tested, such a relaxed place

I agree Gary but 4DB is quite a lot when it comes to sound checks.

I think it would be good practice for all U.K circuits to use the same sound meter and sound testing guide lines when testing exhaust noise as you could go to a local circuit and pass the test then go 300 miles to another circuit and fail the test which in my eyes is wrong.

jamie, you seen exactly what happened at croft last year. even if they had the same noise meters you would have the same problem.....which is the occasional prick that uses the meter, at croft he saw evos and held the meter as close to the exhuast as he could then he seen the kit cars an older models and held the meter at a far greater distance.

cadwell park for example, they dont seem to give a **** there, they do the officual stuff but always give a good figure.

THEN, you get tracks that ask to rev at 4500 and then others ask for 5200:confused: very consistent:mhihi:

kenny1
02-05-2011, 18:12
I passed at 100 with a bung in in the morning, did a few runs and then took it out. 104.9. The guy wrote something on my windsceen. I said "what are you doing?" He said "I'm writing this to let them know you have a bung in, you should put it back in"...I said...."but I've passed:confused:" He then put a sticker on to say I've passed.

F'ing prick:rolleyes:

BTW I am using a standard Evo 8 Superdragger

martinw
02-05-2011, 18:16
you stick a prick in charge of a noise meter and this is what happens. on a positive note at least they have x2 people who test you noise level at cadwell

super rover
02-05-2011, 18:29
my mates an MSA noise man ,the sheer amount for C8AP he gets on almost EVERY event is unreal

for me if you cars to noisy make it quiter bung or no bung silencers or not its not hard to make it quiter

the guy whos doing the noise test isnt being and ar$e hes doing whats been asked by the curcuits owners most of the time

noise is THE single biggest issue that surrounds motorsport ,if we constantly break the rules the tracks andvenues will take there ball home so we cant play out

martinw
02-05-2011, 18:33
my mates an MSA noise man ,the sheer amount for C8AP he gets on almost EVERY event is unreal

for me if you cars to noisy make it quiter bung or no bung silencers or not its not hard to make it quiter

the guy whos doing the noise test isnt being and ar$e hes doing whats been asked by the curcuits owners most of the time

noise is THE single biggest issue that surrounds motorsport ,if we constantly break the rules the tracks andvenues will take there ball home so we cant play out

but holding the tester at different distances from the tip of the exhuast is not doing what he is being asked...im just saying that like everything else in life, you get guys and girls who are good at what they do and then you get pricks who dont. ive got a good safe noise level on mine but have seen some horific stuff at track days by noise testers

super rover
02-05-2011, 18:55
but holding the tester at different distances from the tip of the exhuast is not doing what he is being asked...im just saying that like everything else in life, you get guys and girls who are good at what they do and then you get pricks who dont. ive got a good safe noise level on mine but have seen some horific stuff at track days by noise testers

if there doing it wrong then ask them on what basis there doing the test ,as mentioned above the noise level even in just a few DBs can be huge in the actual level out the pipe

saying that over the weekend i went to donington for the historic festival KIN ELL some of the older F2 cars where absolutly stupidly loud ,we where 50ft from the track in a braking area and me and dad couldnt hear each other speek side by side ,after 10 mins it was quite unbearable and we left ,but crumbs some sounded SO fit

andy i
02-05-2011, 19:56
I believe the db increase from say 100 -110 is not representative of the number increase or % ( like it would be from say 50-60) as to increase at higher decibels is a larger increase in volume than at a lower range (does that make sense??)

But I think they should all have the standard meter IMO
Andy

evo1 4life
02-05-2011, 20:10
Every track I went to in the evo1 was 99 db. Brands,cadwell,bedford,snett.

New owner went to coombe. 105 db or something.

And bedford is tight on noise.

super rover
02-05-2011, 20:26
I believe the db increase from say 100 -110 is not representative of the number increase or % ( like it would be from say 50-60) as to increase at higher decibels is a larger increase in volume than at a lower range (does that make sense??)

But I think they should all have the standard meter IMO
Andy

i understand ,noise works on a sliding scale 100 to 110 BDA can be twice as loud ish

as for the meter my mate has to buy his own but there tested and calibrated some how ,but most tests should be done at 0.5 meters away from the end of the exhaust at 45 degrees ,for tests around 94 to 105 dbA at 4500 rpm

andy i
02-05-2011, 20:32
That's it, easy than my description!!

neverneverman
02-05-2011, 20:33
At combe they say its classed as a track day so 3/4 rpm 5250 but an msa event its 2/3rd rpm 4500

martinw
02-05-2011, 21:02
At combe they say its classed as a track day so 3/4 rpm 5250 buy a msa event its 2/3rd rpm 4500

see this is what i realy dont comprehend:shake: also i have seen some with metal poles that ensure the correct distance between meter and exhuast tip but then have seen others with just a meter

b6lee
02-05-2011, 22:30
At combe they say its classed as a track day so 3/4 rpm 5250 but an msa event its 2/3rd rpm 4500

Combe action days and track days the limit is normally 100db at 4500rpm but for this event as there is only 1 car on track at a time they were aloud to raise it to 105db but for some reason they raised the rpm as well :confused:

I had my car tested there 2 weeks previous and it was 100db at 4500rpm then this time I had 97db at 5200rpm then I was stopped in the afternoon and was 103db at 5200rpm :confused:

JimBFC
02-05-2011, 22:35
Noise gestapo at Combe and Oulton it would seem, remember Oulton last year, about 10 cars failed lol and had all passed at earlier rounds??? they seem to measure about 10db's bloody higher than anywhere else.

corky_79
03-06-2011, 14:14
Mine took the award for being too quiet.

82 DB :crackup:

Hatty's colt is louder than that in the car :mhihi:

Andy_8
03-06-2011, 15:50
I don't see what the big deal is. We spend k's to get the power and then throw a kiddie fit because we didn't spend a couple of hundred quid making sure the thing meets the noise regs.

I had an extra silencer box welded in the mid pipe and fitted a silenced decat. Job done! 89db at 4000rpm, 94db at 5500rpm.

I've seen the difference between someone going on track or not as just a 60 silenced de-cat.

JimBFC
03-06-2011, 16:03
a good point tbf Andy

kenny1
03-06-2011, 16:04
I've now had trl make me a new one. oval backbox and oval silencer in the middle. Clive w has the same setup. His measured 97db at 5250 I hope that is enough as some places seem to add 7dbs for the laugh.

markmec
03-06-2011, 22:34
Mine was 104.9 at coombe..

Must have "Looked like a loud car" ?

:lol:

kenny1
03-06-2011, 23:14
Mine was 104.9 at coombe..

Must have "Looked like a loud car" ?

:lol:

Standard superdragger :shrug::rolleyes:

Twas 102dbs on a mates proper DB reader after the rockingham sprint last year.