[Fot] Mufflers?
DAVE HOGYE
dlhogye at comcast.net
Tue Oct 9 20:10:50 MDT 2018
For Laguna Seca, built and first raced in 1957, I have seen crazy/interesting/hilarious plumbing in order to point the exhaust away from the db reading zones. Like turning the exhaust up and along the rear bumper, then along the driver's side (left side) of the car, then adding a Supertrapp on the tail pipe. This is for track days during the week when the limit is, if I remember correctly, 92db. The track is surrounded by relatively new and currently being built, as fast as possible, multi-million dollar homes. Coexistence in action. Beautiful! Peace out.
Dave H.
> On October 9, 2018 at 12:46 PM robert bownes via Fot <fot at autox.team.net> wrote:
>
>
> Yup, seems to have started many many years ago at Lime Rock, where there is no racing on Sunday because of the church across the street. Absolutely no engines before or after certain times of day, nothing louder than certain db limit (measured at the same point every weekend), etc.
>
> You end up having a muffler, a director tip to 'point' the noise away from the meter, and knowing where to lift to cut off the noise. :)
>
> My Spitfire was right on the limit on bad days (humidity makes a huge difference) so I kept a director tip in the trailer. Worked wonders. The FV, on the other hand, doesn't even come close to the limit with an open exhaust...But 2/3 the weight and half the HP. :)
>
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> On Tue, Oct 9, 2018 at 3:29 PM Chris Marx via Fot < fot at autox.team.net mailto:fot at autox.team.net > wrote:
>
> > >
> > I had no idea that there are noise limits in USA for race cars.
> >
> > Thought that is only in Europe.
> >
> >
> >
> > Cheers
> >
> > Chris
> >
> >
> >
> > Von: Fot <fot-bounces at autox.team.net mailto:fot-bounces at autox.team.net > Im Auftrag von Brian Dennis via Fot
> > Gesendet: Montag, 8. Oktober 2018 22:08
> > An: FOT Triumph <fot at autox.team.net mailto:fot at autox.team.net >
> > Betreff: [Fot] Mufflers?
> >
> >
> >
> > What are folks using on GT6 to get noise down to 98db? Full race 12:1 2.0L. Most local (New England) tracks have noise rules. Some have open exhaust days but are limited.
> >
> > Thanks, Brian
> >
> > Foster, RI
> >
> >
> > Sent from Yahoo Mail for iPhone https://overview.mail.yahoo.com/?.src=iOS
> >
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