Mike500 Posted April 19, 2002 Share Posted April 19, 2002 Having just spent all my hard earnt cash on an R500 I dont want to waste money by getting turned away at track days. Can anyone please give me the definative on noise levels and the solution to reducing DB output to 105 max. The R500 is awesome, I have a lot to learn! P.S. How strict will Cadwell be on the Caterham track day 7 May? Link to comment Share on other sites More sharing options...
FH Posted April 19, 2002 Share Posted April 19, 2002 Mike, which exhaust do you have fitted and do you have the airbox question.gif Induction noise on drive-by is usually the killer but Cadwell is pretty good. When we had our R500, we had no noise problems there. I'm sure Richard, Jules, Jason et al will be along shortly to give you more info. Enjoy the car biggrin.gif FH teeth.gif Link to comment Share on other sites More sharing options...
Mike500 Posted April 19, 2002 Author Share Posted April 19, 2002 Thanks for the reply. The car is 16 months old and is in standard R500 spec (I.E. I dont know the precise exhaust type!) I have enquired with Caterham regarding the airbox and they have quoted £1200 for an upgrade. I will go ahead with this if it does the trick, but I am pretty well in the dark. Any suggestions will be appreciated. Link to comment Share on other sites More sharing options...
Martin Ray Posted April 20, 2002 Share Posted April 20, 2002 My R500 came (new) with the titanium silencer. To get onto lower noise level tracks (eg Castle Coombe) I bought a 7" silencer form Caterham. That got me down to 100 Db when the silencer was new. I went to Coombe a couple of weeks back - with the silencer having been used on about 6 track days and the noise level was 105Db - turns out that the stuffing comes out with use and the noise level rises. A serach of this and the R500 site led me to order a BTB silencer - Jason Krebs car has been tested with this silencer at 98 Db. Moreover its repackable. A number of R500 owners have this silencer for racing at tracks with restricted noise level (eg Jason and Richard Ince). BTB are near Daventry (at Woodford Halse). When i ordered my silencer (price £400) they did say they would do it for £350 if they were making up more than one. YOu could try ringing them to see if the offer is still on. Link to comment Share on other sites More sharing options...
Mike500 Posted April 20, 2002 Author Share Posted April 20, 2002 Martin, thanks I will email you as I have a further couple of quetions. Link to comment Share on other sites More sharing options...
Gridgway Posted April 20, 2002 Share Posted April 20, 2002 I have the air box and the rear exit exhaust system. It's so quiet you can get on anywhere! I am planning to upgrade to the BTB side exit or an alternative at some point this year. I spoke to Jez Coates on the subject at the end of last year and he said Caterham would be selling a quieter side exit, but it has not seen the light of day yet. Probably due to too much X-preoccupation. Graham Link to comment Share on other sites More sharing options...
Slipper man Posted April 20, 2002 Share Posted April 20, 2002 I use the standard setup normally, and it is LOUD. Having said that, I had no problem at Cadwell or Snetterton. I upgraded to the airbox last year, and also bought the rear exit system which can be put on the car if I have noise problems. So far, I have never had to use it, (even at Oulton) but if I do, it takes 10 mins to fit. As Graham says, it is very quiet with all the quiet stuff on, but it definitely takes the edge off the performance, and the lack of noise is less fun to me. Link to comment Share on other sites More sharing options...
Gridgway Posted April 21, 2002 Share Posted April 21, 2002 Absolutely Keith, spot on. When I put on a side exit R500 exhaust to do a check on horsepower-drain from the rear exit, I drove round with it on for a time, absolutely brilliant. I never got to exercise the extra horses it liberated for the time it was on, but the sound made up for it (nearly)! Graham Link to comment Share on other sites More sharing options...
NeilH Posted April 22, 2002 Share Posted April 22, 2002 Mike Slightly off topic, is you're car number 48 in Bugatti Blue ? Link to comment Share on other sites More sharing options...
Mike500 Posted April 22, 2002 Author Share Posted April 22, 2002 Neil, the answer is yes and a quick look at the log book has revealed the link. I will email you direct. Very interesting! Link to comment Share on other sites More sharing options...
anthonym Posted January 26, 2011 Share Posted January 26, 2011 Martin at what RPM were the results you mention above? .. if you are still here.. if not anyone else have any idea? Anthony Link to comment Share on other sites More sharing options...
I reply to every thread Posted January 26, 2011 Share Posted January 26, 2011 9 years Top bump Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted January 26, 2011 Share Posted January 26, 2011 When i ordered my silencer (price £400) they did say they would do it for £350 if they were making up more than one. YOu could try ringing them to see if the offer is still on.Do you think the offer may still be valid ?? 😬 Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted January 26, 2011 Leadership Team Share Posted January 26, 2011 My BTB silencer was around £680 ......... so maybe not! Stu. Link to comment Share on other sites More sharing options...
Racing Snake Posted January 26, 2011 Share Posted January 26, 2011 *arrowup*blimey GOODFABS are much cheaper Mad Hatter The Dura Mentalist 😬 Carl @ Penn 7's Caution - May Contain Nuts ! Link to comment Share on other sites More sharing options...
Slipper man Posted January 28, 2011 Share Posted January 28, 2011 With the air box and rear exit, mine was measured at Goodwood at 95 db at 6000 rpm! Link to comment Share on other sites More sharing options...
anthonym Posted January 28, 2011 Share Posted January 28, 2011 ok, so it is possible.. even I guess at 6,500, it's "just" a question of time and money, mostly money. Anthony Link to comment Share on other sites More sharing options...
BSA Posted January 29, 2011 Share Posted January 29, 2011 I was quoted £750 +VAT for a silencer for my 1.9 K from BTB yesterday Link to comment Share on other sites More sharing options...
Slipper man Posted January 30, 2011 Share Posted January 30, 2011 Actually, come to think of it, it was at 3/4 of max, which is 6500 rpm. Yes it can be done, but it does need both the exhaust and induction to be dealt with. It wasnt that expensive and I certainly rook the view that if I wanted to have such a car, it was as well to future proof it for circuit use. I rarely have to pit the quite silencer on the car, but when I do (EG last time at Oulton) I would have been going home if I hadn't had the quiet system in the truck. Funny to see I was Keith Jecks when this thread started! Link to comment Share on other sites More sharing options...
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