Noise regs and Castle Combe

Noise regs and Castle Combe

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Discussion

virtual bodysnatcher

Original Poster:

3 posts

92 months

Tuesday 23rd August 2016
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Hi peeps, am fixing to get a new bike (to me) next year and as it's so close Castle Combe beckons for some trackday stuff as the Circuit O Cymru seems ever disappearing on the horizon.

Am looking at something that'll get under the noise regs, which rather narrows my list of ideal bikes, GSXR750's K6 and 7 are out but dunno about the K8, it's got a longer silencer but on the CCwww they appear to have K6 1000's as not passing with a stock exhaust and that's about the same length as the K8 750. Obviously the 3/4 rev is rather doing it for these higher redlined bikes and I guess a later 750's going to redline higher than an earlier model 1000 so am a bit concerned that'd not pass either, 2008 R1's are also on there as not passing, I'm thinking someone had a big bang one with a 2008 plate as I can appreciate the firing order of those will move a lot of air but the 07 and 08 weren't big bangers.

Anyone had any experience with this, ie anyone got a k8 750 onto the circuit when it's not a noisy day.....

RemaL

24,973 posts

234 months

Tuesday 23rd August 2016
quotequote all
Combe is a compete to get on track even my Standard Blade with a standard can Would not get on track


Best bet is to take it on a day the noise testers are there (just email them for info) and you can take the bike to get tested. What I will be doing soon with my H2 just to find out

CQ8

783 posts

227 months

Tuesday 23rd August 2016
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I took my 2007 R1 with standard exhausts around there no problem. 2009 were the big bang R1's, 2007 and 2008 models are exactly the same.

My Ducati with 50mm termi exhausts only gets through with db killers fitted.

I've seen lots of GSX-R's there so they should go through. Bikes that struggle are ones with really stubby exhausts like the R6.

RemaL

24,973 posts

234 months

Wednesday 24th August 2016
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if you check the website you will see the list of bikes that will not make the test with a standard can

graeme4130

3,827 posts

181 months

Wednesday 24th August 2016
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Combe is a pretty average track, and the sessions are only 10mins, so you get 6x10min sessions for your £150, whereas most other tracks give you 7x20min sessions for the same money
It's to do with the local resident regulations that only allow 12 bikes on track at a time for track days
It's bumpy, pretty boring, and the people than run the days there are quite hard work, so I'd put up with a bit of travel and go elsewhere. At least that opens up your bike options
I live 20mims away, and don't go there as Silverstone is an hour away, and donnington a couple of hours away. Both of which are great tracks and worth the trek

virtual bodysnatcher

Original Poster:

3 posts

92 months

Wednesday 24th August 2016
quotequote all
Yep I went on the www which is why I'm questioning the 2008 R1 and K6 1000, doesn't make entire sense if it's just silencer length unless the www info's wrong which is eminently possible. They are plagued by noise regs and are very limited on noisy days and use those for racing but that's the way of things.
Have done one before there ages ago, on an h2 ZXR 750 and that was just ok with a baffled Micron but those old cans are long in relation and that old bus didn't rev to high heaven. Not an easy circuit by any means, I rather liked it.

We're Midsomer Norton so probably our next closest is Brands! Which'd be my preferred.

Having seen the MGP and WSB at Silverstone I wouldn't have thought it's so hot for road bikes as it's flat as anything and the curves are designed more for the cars. Donnington tho' that's a proper one.

Will probably end up with a Daytona or a 636 of the 2005/6 vintage or an 07/08 CBR6 when they were at their best but do fancy a 750 again as those few extra cubes count on the road so the only one is the Suzuki and all the ones I'd probalby want to go for have those stubby pipes.

MotorsportTom

3,318 posts

161 months

Wednesday 24th August 2016
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I've lived down here for 4 years and combe is approx 40 mins from me.

I have done Anglesey 3 times in that time, Donny once, and also Pembrey... it just seems a better idea to go further rather than stay local!

Make a mini adventure of it!

supercommuter

2,169 posts

102 months

Wednesday 24th August 2016
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I live in Bristol so have done combe a couple of times. I really like the track and the fact it is super close.

My 2005 R1 with a decat and standard cans got on no problem. My mates 2008 R6 Failed but we cut up his standard exhaust and jammed another baffle in the pipe and it went through in the end!

It is worth doing if you live nearby but take a genny and tyre warmers otherwise you slice through so much time getting your tyres hot!

rat840771

2,023 posts

165 months

Wednesday 24th August 2016
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I have a K7 1000, it has a Decat and single stubby yoshi on it. I bought a genuine yoshi baffle for it and its 95DB 5.5RPM. Pretty good!

virtual bodysnatcher

Original Poster:

3 posts

92 months

Wednesday 24th August 2016
quotequote all
Yep, it's the higher rev speed they test at CC, 3/4 to redline, might be 10 thou on a GSXR 750, will be a load louder at that engine speed, the test you're on about is the Std ACU one and CC can't do that due to the council making them much stricter as it's so close to the village, tho' they do the tests on the village side of the circuit I notice.........

supercommuter

2,169 posts

102 months

Wednesday 24th August 2016
quotequote all
rat840771 said:
I have a K7 1000, it has a Decat and single stubby yoshi on it. I bought a genuine yoshi baffle for it and its 95DB 5.5RPM. Pretty good!
My mates with this exact set up failed on the day