Track Day Cherry Popped with 3 Full Spins
Discussion
Well what a day, a cold wet day at Bedford Autodrome probably not an ideal first time on track in my cerb.
We only booked a taster session mainly to see if my cerb would be within the noise limit of 101db static, it failed at 108db
but the guys at Bedford were extremely helpful and as it was so wet, let me on thinking that I would only be tip toeing around and boy were they right. They said that if i failed the drive by limit of 87db I'd be off but no chance of that I could hardly touch the throttle, except up the back straight and there aren't any noise monitors along that 
I managed 6 or 7 3.8 mile laps (first 3 very slowly behind saftey car) and found that my cerb just has no rear end grip at all. 2 very graceful 360's (1 in front of the cafe
) and 1 more on an off camber lefthander at 70-80mph 
Guess I'll have to buy some Track Day silencers for next time and some more grippy rubber
We only booked a taster session mainly to see if my cerb would be within the noise limit of 101db static, it failed at 108db
but the guys at Bedford were extremely helpful and as it was so wet, let me on thinking that I would only be tip toeing around and boy were they right. They said that if i failed the drive by limit of 87db I'd be off but no chance of that I could hardly touch the throttle, except up the back straight and there aren't any noise monitors along that I managed 6 or 7 3.8 mile laps (first 3 very slowly behind saftey car) and found that my cerb just has no rear end grip at all. 2 very graceful 360's (1 in front of the cafe
) and 1 more on an off camber lefthander at 70-80mph Guess I'll have to buy some Track Day silencers for next time and some more grippy rubber
tejr said:
Interested to know what wheels/tyre combo you're using? 
I have Spiders with 245/40 Dunlop sp9000 on rear & Toyo Proxes 235/40 on the front all a bit shoddy really (but came with the car) and will be replaced before next track day, any recommendations ? is it just tyres that cause this kind of massive over steer? gruffalo said:
Normally measured 45deg and 50Cm from one of the exhausts at 4.5K revs.
Mine also normally read around 108dB with the same set up as mentioned here, much loder now with decats and full ACT system, lucky I have some track cans.
Thats exactly how they tested it, I think if it didn't pop & bang so much the result would have been lower, my mates Chimaera which actually sounds louder only tested at 101db but that doesn't pop & bang.Mine also normally read around 108dB with the same set up as mentioned here, much loder now with decats and full ACT system, lucky I have some track cans.
gruffalo will a pair of the ACT Track Day Cans make enough of a difference for it to pass at 101db test ?
Marto303 said:
Thats exactly how they tested it, I think if it didn't pop & bang so much the result would have been lower, my mates Chimaera which actually sounds louder only tested at 101db but that doesn't pop & bang.
gruffalo will a pair of the ACT Track Day Cans make enough of a difference for it to pass at 101db test ?
I am not sure, call Tim at ACT and see what he says.gruffalo will a pair of the ACT Track Day Cans make enough of a difference for it to pass at 101db test ?
I am booked in at Snetterton on 7th April, 105dB day but worried about the noise testing, with out the track cans my car is a thunderstorm at the moment, I will post the before and after readings when it gets tested so people have an understanding of what the track cans actually do.
Anyone use the silencer inserts as supplied through www.tvrmonster.com ? (i'd post a link but don't have a clue how to)Are they any good?
They look like a much better idea than the ACT cans IMO.
They look like a much better idea than the ACT cans IMO.
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