Has anyone run at Thunderhill who can comment on the noise limit of 103 dB. I have run at Laguna Seca at 93 dB limit and had to use mufflers to comply. Does 103 dB allow enough for an open exhaust?
Steve
QUOTE (race914 @ Apr 7 2006, 07:43 AM) |
I was in my pit next to a 66 Shelby GT-350 and couldn't even hear my car when he pulled up. He even asked me "is that thing running?" He was joking though. He wasn't laughing as hard after our first run session. A new found respect for hp/weight v.s. just hp! |
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TH isn't quite as bad (yet) |
QUOTE (Dan (Almaden Valley) @ Apr 7 2006, 08:43 AM) |
After a little over 2 years working as the GGR Time trial track co-steward, working at the head of grid as well as in the tower, I have never been requested by the TH officials to black flag any of our cars for sound...period. Never had any discussion on the headsets with any of the corner workers about any of our cars being too loud, or needing to be black flagged for sound. At least with GGR there just has been no sound problems. I think at TH most of the time they just make a suggestion of 103 and asume that most will adhere to it. With our TT series we have cars running headers into megaphones at TH with no issues....not that that combination isn't loud |
QUOTE (Dan (Almaden Valley) @ Apr 7 2006, 02:52 PM) |
It is always hard to tell for sure. Depends on what group you are running with. They may not like the sound even though you do. I would try the megaphones but possibly take the mufflers with you in case you need them. If you cant get the mufflers there, then I would install them...you would hate to go all the way there to be sent home due to sound. |
QUOTE (Dan (Almaden Valley) @ Apr 7 2006, 03:08 PM) |
Depending on which direction they run the track in you may be out of RPMs on the main straight. The rest should be ok. TH is a very wide open track for the most part. There are several areas the you will be up in the gears. turns 6-8, 9-10 (down the hill) , back straight and main straight. If you run CW then you most definitely will be RPM limited on the main straight. In my 2.7RS 914-6 in CW direction I would redline in 5th before the braking zone on the main straight. Yes, I had a short 5th gear. |
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My gearbox is AFMSX |