Brands Hatch noise limit and 997.1 GT3
Discussion
nicolelh said:
QBee said:
No static at Cadwell either
pretty sure there is So, GT3 owners, get your cars over to Cadwell! It's about the only circuit where I stand a chance of staying with you.....
I found this old post and found it quite interesting as both a car, firearms and acoustics enthusiast both of my favourite pastimes are potentially extremely noisy. Some of the information provided is relatively accurate however following the Mildenhall ruling legal action for nuisance must be a significant concern for the operator. This is not the noise police being over zealous but a legal requirement if the council doesn't act its taken out of their hands and the Secretary of State steps in.
I make my living in the field of acoustics specialising in firearms and motorsport noise and know only too well the pitfalls of ignoring any problem. The issue at Brands Hatch is that the nearest residents homes are less than 25 yards from the edge of the track and I know of measurements being taken in Hever Avenue when an A1 GP took place where levels of 94 dB(A) inside a property when all windows and doors where closed, arguably not only the Environmental Protection Act 1990 but the Health & Safety at Work Act 1974 were applicable (before anyone gets excitable about local residents not being at work read section 3 duty to protect the public). the noise exposure see Noise at Work regs 2005 would require the occupants of that property would be required to wear hearing protection as the noise exposure was greater than an hour and the limit without protection at 94 dB(A) is no more than an hour.
When permission was granted for the now defunct Dartford Rural District Council allowing housing to be built so close to the circuit , this changed the nature of the area significantly but as at the time only 8 race events were held every year not such a problem and no track days back then. I'm not sure why those with noisy cars get so excitable as noise does not mean more power indeed from studies in the motorsport industry the noisier cars in any formula tend to be the lesser performing and fair worse in in rankings, some of the guys winging are no better than moped riders who believe that removing the baffle somehow makes the vehicle go faster with no understanding of how backpressure affects torque etc.
What do you think.
I make my living in the field of acoustics specialising in firearms and motorsport noise and know only too well the pitfalls of ignoring any problem. The issue at Brands Hatch is that the nearest residents homes are less than 25 yards from the edge of the track and I know of measurements being taken in Hever Avenue when an A1 GP took place where levels of 94 dB(A) inside a property when all windows and doors where closed, arguably not only the Environmental Protection Act 1990 but the Health & Safety at Work Act 1974 were applicable (before anyone gets excitable about local residents not being at work read section 3 duty to protect the public). the noise exposure see Noise at Work regs 2005 would require the occupants of that property would be required to wear hearing protection as the noise exposure was greater than an hour and the limit without protection at 94 dB(A) is no more than an hour.
When permission was granted for the now defunct Dartford Rural District Council allowing housing to be built so close to the circuit , this changed the nature of the area significantly but as at the time only 8 race events were held every year not such a problem and no track days back then. I'm not sure why those with noisy cars get so excitable as noise does not mean more power indeed from studies in the motorsport industry the noisier cars in any formula tend to be the lesser performing and fair worse in in rankings, some of the guys winging are no better than moped riders who believe that removing the baffle somehow makes the vehicle go faster with no understanding of how backpressure affects torque etc.
What do you think.
I have a Supercharged K20 Elise with a small silencer in place of the CAT and the absolute biggest silencer that can bit fitted after that (25x7")
It would struggle at the likes of Brands unless the baffling is kept in good condition - which is a tough job with the kind of EGTs (and gas speeds) you get when supercharging a high comp engine like the K20.
Even when the silencer is doing it's job, induction noise can be a problem.
There are certainly plenty of cars that are struggling with noise that haven't just removed a baffle in hope of more power.
It would struggle at the likes of Brands unless the baffling is kept in good condition - which is a tough job with the kind of EGTs (and gas speeds) you get when supercharging a high comp engine like the K20.
Even when the silencer is doing it's job, induction noise can be a problem.
There are certainly plenty of cars that are struggling with noise that haven't just removed a baffle in hope of more power.
Remmy1187 said:
I'm not sure why those with noisy cars get so excitable
Back in the context of the time of the thread - because changes in noise policy meant that people with unmodified road legal cars which used to be able to drive them in track days on a significant number of circuits were suddenly unable to do so (due to changes in noise enforcement policies) without modifying the car (which is of course costly with most high performance cars and can in some cases invalidate a warranty). Nobody wanted to make more noise, and moreover there was the particularly absurd situation at Donington (where the circuit is under the departure corridor of East Midlands airport and cars which could not really be heard over the sound of the departing jets passing overhead were still deemed too loud to play).A risk of thread resurrection is losing the context of the time
Gassing Station | Track Days | Top of Page | What's New | My Stuff