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kfarmgz wrote: Tue Oct 04, 2022 12:42 pm
Thanks Tom for the welcome,
Track is in the great white north. Rocky Mountain Motorsports 45 min north of Calgary, Alberta. https://rockymotorsports.com/
I blew over in my Bone Stock 991.1 GT3RS, i switched over to the soul resonated tips with angles down and it is still blowing 98db, Track Limit is 95db. There are 3 locations for the sound check, I have only found 2 myself so far, however since its a membership track and some of my friends are members, would not be hard to find the last one.
Can I ask, each time the GPS Valves closes, how far outside of the GPS zone would it need to be before it opens again? Or if they are time based, how long do they stay shut after the GPS signal triggers it to close?
You bring up a good point on the flaps staying shut for so much of the track, I wonder if there is any risk damaging Engine or Muffler?
The system is distanced based (not time) and we can program in any distance we want. The way it works is that we program in a fixed point on earth and then set the flaps to close when it comes within X number of feet of that point -- so in effect each GPS quiet zone is actually a circle. I pulled up that track and marked it with 3 random GPS zones to give you the idea. (I have no idea where you actually need it quiet, just showing how you can vary the center point and radius to cover portions of the track without bleeding into unwanted sections....). As larry says, I have heard that people have damaged catalytic converters (by overheating them) when they used to wire their flaps shut for an entire race. I've never seen it happen, nor know anyone it's happened to, so I put it into the category or believable folklore. There's no hard and fast rule on how far away from the sound meter to keep the flaps closed. People tend to learn by word-of-mouth where they need to let off the gas on sound-metered tracks. It depends on the terrain, braking and exit points, how close you are to the limits, etc. I think the smallest section of track I've covered was about 400 feet, and the longest over 1000, if that gives you some sense....
track-nanny-example.jpg (762.2 KiB) Viewed 2589 times
So the front straight is where the first one is. the 2nd one is right at 4 on the right side
I've just heard the 3rd one might be mobile..... rendering this a moot point. Need to do more research before I can commit to a unit. When I am ready whats the best way to get one?
kfarmgz wrote: Tue Oct 04, 2022 1:54 pm
So the front straight is where the first one is. the 2nd one is right at 4 on the right side
I've just heard the 3rd one might be mobile..... rendering this a moot point. Need to do more research before I can commit to a unit. When I am ready whats the best way to get one?
Ok, keep me posted. If the meter moves around the track as you drive, then the Track Nanny is not the answer. If they set it up in different spots from one week to the next, then in theory I 'could' plug the two fixed locations into the pre-programmed zone and re-work the user-program mode to let you program in a third location on the fly. I've never done one like that, but as a programming matter it seems doable. Sounds like that track is pretty serious about its noise limit though, so wonder if doing that would fly with them. It seems like lots of tracks put up sound meters to appease the local neighborhoods, but then don't seem to care how loud a car actually is as long as it coasts by the meter. I've seen wildly loud cars fly around Laguna Seca and then coast by the sound meter, and have never seen the track do anything to them.
Sounds like maybe your track is more serious about it....
Tom, I understand the purpose of the ‘track nanny’ clue is in its name
however, have you considered any options for non-trackers to use in normal road use?
In particular the gps setting is great for stock in home vicinity but it would be nice to manually control ‘open’ from drivers position, perhaps by way of wireless r/c like car graphics or ‘extension switch’.
Just now reading this post, so a very late reply to the AMP (Atlanta Motorsports Park) questions from earlier this year.
The AMP terminal sound level is not too bad (98dB I think). The problem is the inordinate number of monitors - I've heard there are as many as 25. Some may be mobile but not sure of that. There's a real-time sound board and display unit in the ctrl tower. Data is constantly relayed in real time to county officials. Presumably, they have the same monitor(s) with the same data.
We run ChampCar there and for the first time got flagged at last month's test day prior to the Enduros. If there's a group of cars close very tight together (as will be the case in a race) they have the ability to isolate and track each car, following up on the suspected offender(s) at other points as they separate on track. It's a very sophisticated digital system that alerts to any and all sound violations. (The whole track is high-end tech-wise with a Flagtronics integrated system that's now required for races, full course cautions & hot pulls without using a pace car, sound and hi-def video monitoring for the entire track, etc.) In time, more facilities will probably copy the high-tech nature of AMP.
The sound issue is very strict at AMP and the facility is serious about sound due to the track's agreement with the county which was put in place as part of the original permitting agreement. The track can get fined $10k (or maybe it's $20k?) per day for violations. The track's agreement with county is that offenders get one (or maybe two) warnings with the option to correct the sound violation, after which they are done for the day or longer.
Beyond that, excessive violations give the county the right to shut the facility down for several weeks, although that's never happened.
The 98dB limits aren't bad but dealing with violations at AMP is harsh and quick.
Tim Current: '26 911 Carrera S - PTS Verde British Racing Green
'24 Cayenne S - Algarve Blue Metallic
'21 718 Cayman GTS - Black
'22 911 Turbo S - Carmine Red
'21 718 Cayman GT4 - White
'11 GMC 1500 Quad Cab 4x4 - Black Musik-Stadt Region
grasmere wrote: Sun Nov 20, 2022 5:35 am
Tom, I understand the purpose of the ‘track nanny’ clue is in its name
however, have you considered any options for non-trackers to use in normal road use?
In particular the gps setting is great for stock in home vicinity but it would be nice to manually control ‘open’ from drivers position, perhaps by way of wireless r/c like car graphics or ‘extension switch’.
Just a thought . . .
Lots of people keep the box in/near the center console for that exact reason, so they cam manually open the valves. I've also done custom units for people who want the ability to manually close the valves. One guy bought one exclusively so their car would be quite any time he was inside his gated retirement community. I've mulled things it might do unrelated to the exhaust. My 992 for example remembers where I lift the front axle so that the front goes up anytime I approach a steep curb or speed bump etc. I just haven't come up with anything that seems worthwhile that Porsche isn't already doing...
blueline wrote: Sun Nov 20, 2022 7:50 am
Just now reading this post, so a very late reply to the AMP (Atlanta Motorsports Park) questions from earlier this year.
The AMP terminal sound level is not too bad (98dB I think). The problem is the inordinate number of monitors - I've heard there are as many as 25. Some may be mobile but not sure of that. There's a real-time sound board and display unit in the ctrl tower. Data is constantly relayed in real time to county officials. Presumably, they have the same monitor(s) with the same data.
We run ChampCar there and for the first time got flagged at last month's test day prior to the Enduros. If there's a group of cars close very tight together (as will be the case in a race) they have the ability to isolate and track each car, following up on the suspected offender(s) at other points as they separate on track. It's a very sophisticated digital system that alerts to any and all sound violations. (The whole track is high-end tech-wise with a Flagtronics integrated system that's now required for races, full course cautions & hot pulls without using a pace car, sound and hi-def video monitoring for the entire track, etc.) In time, more facilities will probably copy the high-tech nature of AMP.
The sound issue is very strict at AMP and the facility is serious about sound due to the track's agreement with the county which was put in place as part of the original permitting agreement. The track can get fined $10k (or maybe it's $20k?) per day for violations. The track's agreement with county is that offenders get one (or maybe two) warnings with the option to correct the sound violation, after which they are done for the day or longer.
Beyond that, excessive violations give the county the right to shut the facility down for several weeks, although that's never happened.
The 98dB limits aren't bad but dealing with violations at AMP is harsh and quick.
I've long thought Laguna Seca doesn't try very hard to keep the sound down, despite their low limits. People have known exactly where the single booth is, and have been lifting the gas pedal when they go by for as long as I can remember. You could drive a Learjet around that track all day as long as you coast past the booth. With some cars it's super obvious, but I've never seen the track do anything. If LS were serious about keeping the sound down, just doing 10% of what AMP does would make a huge difference. Not that I'm suggesting that, of course, just pointing out their curious situation with the foxes guarding the chicken coupe.
Nürburgring Nordscheife has four sound traps and unfortunately my old 911 is a bit too loud in its loud mode.
Would it be possible to have four zones in Track Nanny?
Thanks
I've never done 4, but think it's technically possible with some tweaks to the software. How big is the track? 4 zones might cover too much to be worthwhile? How old of a 911 do you have? These are mostly used on 991, 981, and 718 cars, although it should work on the 997 as well in theory. I've never looked at anything earlier than that...
Nürburgring Nordscheife has four sound traps and unfortunately my old 911 is a bit too loud in its loud mode.
Would it be possible to have four zones in Track Nanny?
Thanks
I've never done 4, but think it's technically possible with some tweaks to the software. How big is the track? 4 zones might cover too much to be worthwhile? How old of a 911 do you have? These are mostly used on 991, 981, and 718 cars, although it should work on the 997 as well in theory. I've never looked at anything earlier than that...
Tom,
The track is about 20 km.
The car is a 1970 911 and it has an exhaust system which is controlled by a single wire 12 volt signal. 12 volt is loud and 0 volt is silent. Really simple.
