Track Day noise Restrictions

[ceecee]

Hi guys

I am hoping to start going on some trackdays this year but was worried about failing the noise restriction tests.
I've got a tamora with a standard factory fitted exhaust. I was hoping to go to Bedford autodrome which has a limit of 101dB at 75% max revs from 50cm from exhaust and 87dB measured from 20m away when accelerating hard to 60mph.

Does anyone know if this is going to cause me a problem.

Thanks

Ceecee

[S33 TVR]

At a guess I would say you were just on or below the limit. Best way is to find a track near you - when they have an event on, give them a call and get them to do the noise test. Most are only too happy and will do for free.

Edited by S33 TVR on Wednesday 16th August 23:12

[tvrbob]

Modern TVR's even with loud exhausts are always well below the limit. It's the V8 Cerbera's with straight through pipes and precat wedges that push close to the limit.

[ceecee]

Thanks Guys

I'm pretty close to Donnington, so I'll pop along in the next couple of weeks.

I'm feeling a bit more confident now though after tvrbob's comment. Here's hoping my puney exhaust gets through!

[richb]

Presumably Bedford have noisy days? It was 105 db when I went there...

[lazyitus]

Hi CeeCee,

Even if you are too loud, you can get trackday silencers which is a valid option for you.

As mentioned though, I'm sure your car will be under the limit anyway.

[IM]

richb said:

Presumably Bedford have noisy days? It was 105 db when I went there...

You were EXTREMELY lucky to get on the track at 105 db and you'll excuse me for being a little sceptical of your stated db level. We have a myriad of regulations to adhere to which constrain the level of noise permitted from your vehicle not to mention the nearby residents concerns.

At Bedford Autodrome we have two noise tests. First your car will be subjected to a static test, in which the noise level is measured 50cm away from your exhaust pipe with the engine at 75% of maximum rpm whilst remaining stationery. The reading must not exceed 101 dB.

Secondly, and more significantly, your car must comply with our drive-by noise limits. The noise emission from your car must not exceed 87 dB measured 20 metres from your car, which shall be accelerating maximally at over 60 mph.

All standard volume production cars will pass this test with ease, so, for example, if you have a standard Audi, BMW, Porsche, Subaru or Mitsubishi you will have no problems at all. The drive-by level will probably be less than 80 dB.

Cars, which tend to fail the test include most bike-engined cars, eg Westfields, Radicals and Caterhams, plus cars fitted with particularly loud “high performance” exhausts, as sometimes fitted to, for example, Caterhams, Lotuses, TVRs and Subarus.

IM

[gifdy]

I can recommend the track day silencers from ACT. Delivered the next day and look pretty natty too.

ACT Silencers Brands Hatch TVR/ Green / J743***

[richb]

IM said:

richb said:

Presumably Bedford have noisy days? It was 105 db when I went there...

You were EXTREMELY lucky to get on the track at 105 db and you'll excuse me for being a little sceptical of your stated db level.

Bothered? All I know what I was told by the guy on the gate. Bloke gave me a red sticker at the gate but as there was only two cars over on the day (me and mate's Cerbie) he did a drive by of each and gave us the green. Rich...