Drive by noise for R
#1
Drive by noise for R
Hey guys,
Looking at doing my first ever track day soon! Didn't ever see it being in a 550hp car a few years ago haha
Anyway im struggling to find information on how loud the the F-type R is.
The track im looking at has a 92dB (taken at 20 meters) drive by limit, is the car quiet enough for this?
I'd imagine it will be if the exhaust valves are shut but they open regardless above 4000rpm so im not to sure if your pushing hard past the pit lane it might be to loud?
On a side note the static test is 105dB at 3/4 max revs. Pretty sure this will be fine.
Any advise or feedback will be great
Cheers all
Looking at doing my first ever track day soon! Didn't ever see it being in a 550hp car a few years ago haha
Anyway im struggling to find information on how loud the the F-type R is.
The track im looking at has a 92dB (taken at 20 meters) drive by limit, is the car quiet enough for this?
I'd imagine it will be if the exhaust valves are shut but they open regardless above 4000rpm so im not to sure if your pushing hard past the pit lane it might be to loud?
On a side note the static test is 105dB at 3/4 max revs. Pretty sure this will be fine.
Any advise or feedback will be great
Cheers all
#2
#3
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#5
Thanks for the feedback
Does anyone actually know the legal noise limit in the UK? I can't seem to find a definate answer.
Although this is my first track day i have never read about a track with no noise restriction, however i can't possibly say i have seen or heard of it being enforced so hopefully all will be well.
I even went to watch a friend at a drift day in Germany which was at an airport and even that had a noise restriction. Was ridiculous to see planes taking off and then cars with massive silencers hanging off the back of there exhausts.
Does anyone actually know the legal noise limit in the UK? I can't seem to find a definate answer.
Although this is my first track day i have never read about a track with no noise restriction, however i can't possibly say i have seen or heard of it being enforced so hopefully all will be well.
I even went to watch a friend at a drift day in Germany which was at an airport and even that had a noise restriction. Was ridiculous to see planes taking off and then cars with massive silencers hanging off the back of there exhausts.
#6
The organization putting on the track day should be able to tell you of any noise restrictions....and if they have had "your" car at previous events.
Probably 50/50 of the track events I've done in Canada and the US have had noise restrictions.
Best to find out before the big day...it would be most upsetting to be all dressed up and ready to go and then only get to watch he others play.
Probably 50/50 of the track events I've done in Canada and the US have had noise restrictions.
Best to find out before the big day...it would be most upsetting to be all dressed up and ready to go and then only get to watch he others play.
#9
#10
My pleasure. F Type Rs are not painfully loud. Not at all. The sounds is very well calibrated. I've driven a Lotus Elise and that thing is hard on your ears for sure.
However, the readings I posted are (most likely) taken from inside of the vehicle.
#11
OP, talk to the organizer of the event to verify if the sound restriction will be enforced for the event. Typically venues which have sound restrictions allow organizers to "pay" to not have the restriction (how do you think professional races take place at Laguna Seca?).
#12
You shouldn't have any issues, but it doesn't hurt to be careful.
Noise tests are usually taken at 4K RPM. Your car will make most noise when you rapidly lift off, so don't do rapid throttle inputs during sound testing. Also set your active exhaust into quiet mode and instead of 4K RPMs, sit at 3800 or so to keep it closed. They won't be able to tell from looking over your shoulder that you are under-revving.
Noise tests are usually taken at 4K RPM. Your car will make most noise when you rapidly lift off, so don't do rapid throttle inputs during sound testing. Also set your active exhaust into quiet mode and instead of 4K RPMs, sit at 3800 or so to keep it closed. They won't be able to tell from looking over your shoulder that you are under-revving.
#13
At a race track, they don't typically pull cars aside and do a test. They will have a sound station on the side of the track and get readings as cars are flogging it on the track. If you know where the sound station is, yes you can lift.
For some fun, do a Google Image Search with the following:
"laguna seca exhaust turndown"
For some fun, do a Google Image Search with the following:
"laguna seca exhaust turndown"
#16
I did Rockingham last summer in the jag and i've done others in other cars, most say on their website about noise restictions.
Some did a static test some were drive by, Rockingham was a static and all i did was leave the exhaust off, gently bring the revs up and gently let it back down again.
Some did a static test some were drive by, Rockingham was a static and all i did was leave the exhaust off, gently bring the revs up and gently let it back down again.
#17
#18
the R does NOT pass sound at Laguna...i've done two track days there and i have to lift every time going past the sound station. i typically use my 'three black flags', like you would basketball fouls...i pace them out throughout the day. i always use all three of mine, since it really stinks to have to lift and scrub off that speed (oh, well).
those sound numbers quoted above were for inside the cabin...much, much louder outside.
those sound numbers quoted above were for inside the cabin...much, much louder outside.
#19
Found where I read about the sound levels for the Jag. From Car and Driver's long term review of the F-Type V8S:
"How loud is it? Holding the sound-level meter during final testing, it occurred to us that we should have made this measurement before we put 40,000 miles on the car. But then there would have been meetings with human resources about OSHA violations because, with the sound meter 50 feet away from this Jag, we recorded 95 dBA during its acceleration. That’s as loud as a jackhammer, well past the 85-dBA threshold where repeated exposure causes hearing damage. Even inside the car, with the windows up and the top closed, we meas*ured 89 dBA at wide-open throttle."
"How loud is it? Holding the sound-level meter during final testing, it occurred to us that we should have made this measurement before we put 40,000 miles on the car. But then there would have been meetings with human resources about OSHA violations because, with the sound meter 50 feet away from this Jag, we recorded 95 dBA during its acceleration. That’s as loud as a jackhammer, well past the 85-dBA threshold where repeated exposure causes hearing damage. Even inside the car, with the windows up and the top closed, we meas*ured 89 dBA at wide-open throttle."
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Adz3000 (01-26-2017)