uberf1end
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| posted on 16/2/03 at 11:40 PM |
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Track Day noise regs
Does anyone know if I will need a repackable silencer for track days? I have a fireblade engined Stuart Taylor with the standard exhaust they fit?
A rough db level would be helpful...
Also, what sort of establishments would be able to test it for me?
any help much appreciated
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Jasper
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| posted on 17/2/03 at 10:37 AM |
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Stuart Taylor should know what his are set too, I've got one too and I've got to ring him today, so I'll as. I think most tracks are around
103db???
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ChrisGamlin
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| posted on 17/2/03 at 03:12 PM |
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My blade has a ST exhaust and can on it (which is repackable) and it tested at 103dB @ 7000rpm when I got the guy at Goodwood to put his meter on it
for me. I wouldnt take this or anything else as gospel to what you will achieve though, as cans will invariably vary. Other things also have a factor
such as whether you are using a foam filter, or using the standard airbox (which will be quieter), although induction noise generally comes into play
with drive-by noise tests as opposed to static tests, as the noise is only apparent when the engine is under load.
As it is, there are tracks that dont really have a limit as such, and certainly dont actively test. Other tracks have very strict regulations and can
be as low as 98dB. Overall, I would say that if you plan on doing lots of track days at various locations, look for a quieter can than the ST one. I
am going to get a new can before the summer, so I can get book up more days without the concern of failing the noise regs. I will probably go for a
Tech-craft can as one put on a friend's Megabusa seemed to quieten it down loads.
cheers
Chris
[Edited on 17/2/03 by ChrisGamlin]
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Jasper
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| posted on 17/2/03 at 03:55 PM |
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Chris
Cheers for the tip, I've just sent my unused ST silencer back for a refund. Now if only I can get thro' to Tech-craft and speak to them, they're
permanently engaged.....
Just got through to them, I think I'll pass on theirs, it may be very good, but at £275 +vat and postage, I think not.....
[Edited on 17/2/03 by Jasper]
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ChrisGamlin
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| posted on 17/2/03 at 04:40 PM |
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Hi Jasper
Yeh they are pretty pricey, but very well made silencers, and the way I look at it, if I get turned away from one single track day with the ST can cos
I'm just over the limit, then the Tech-craft (or another quiet can) has pretty much paid for itself.
cheers
Chris
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Wadders
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| posted on 17/2/03 at 06:29 PM |
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Why don't you get a standard bike can for trackday use, they come cheap and are well quiet.
Al
Originally posted by Jasper
Just got through to them, I think I'll pass on theirs, it may be very good, but at £275 +vat and postage, I think not.....
[Edited on 17/2/03 by Jasper]
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Jon Ison
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| posted on 17/2/03 at 06:48 PM |
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on the dyno the standard blade can gave better power than a Micron, but my Race Art can gave more, trouble is it also got me a black flag for noise,
anyone going to Donnington can pick my micron can up, its under bridge just after the old hairpin ???
remember it Jasper ???
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Jasper
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| posted on 17/2/03 at 08:17 PM |
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How could I forget - I've still got the burn scars!
I think I'll wait till I take it to be dynojetted - the chap their sells cans quite cheap.
Jon - I can't get an ansa from you on the u2u, wot offset alloys did you buy, widely available Sierra ET38, or ones that are right for the Cortina
axle ET18?????
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locodude
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| posted on 17/2/03 at 10:00 PM |
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Jasp
Jon's got ford focus alloys on I believe which are ET39/40 I think.
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Jon Ison
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| posted on 17/2/03 at 10:57 PM |
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ive had plenty of U2U's but none from Mr Carrot, yeap, Focus wheels, offset unknown...by me anyhow...........
had loads a trouble with "freeserve" too, anyone else havin probs ?
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Jasper
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| posted on 18/2/03 at 10:38 AM |
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Jon, dont know what's going on with the u2u's then, I've sent u at least 3, very strange.
Freeserve - i ditched them some time ago, kept dropping the line, or taking ages to dial up.
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