I.Mupferit Posted April 11, 2001 Share Posted April 11, 2001 I have previously seen a sexy looking Carbon Fibre bodied silencer at James Whitings emporium which I had lusted after and called there today to check on availability, having decided to treat myself. Unfortunately Ruth tells me the company which made them are no longer around. Does anybody know if they are available from elsewhere, preferably re-packable and any idea what level of sound output they are likely to give? Brent Link to comment Share on other sites More sharing options...
EFA Posted April 11, 2001 Share Posted April 11, 2001 Brent, It was I who made them hwne I ran the Carbon Component Company. Sadly I closed the business as its profitability/time ration was not appropiate to my time free of the day job. I sold the tooling to a company called Protune who are in North London, and the metalwork can be made by Hayward & Scott in Basildon (01268 727256) who still have the jig. Whether Protune can get the covers made i am not sure, just be sure whatever you buy is made from vacuum formed hi temp prepreg carbon lined with foil. Anything else is not durable enough. Arnie Webb The Fat Bloke blush.gif in a not so Slow Vauxhall wink.gif See the R500 eater here See the Le Mans Trip Website here Link to comment Share on other sites More sharing options...
tbhall777 Posted April 12, 2001 Share Posted April 12, 2001 BTB Exhausts make superb exhaust systems and silencers. Silecers are avaiable in carbon, titanium, stainless. They will make to pattern. They made me a carbon silecer to exactly replicate my 6" SLR silencer. Made in high temp C/F, foil lined.Fully repackable. Their quality is second to none. SB Developments systems are made by these people. Standard cheesman (Caterham supplied) SLR 6" silencer weighs in at almost 8KG. BTB carbon is 3.5KG. Also the crappy cheesman cheats on obtaining correct clearence by running the centre perforated tube diagonally through the box. hence hardly any wadding one side and to much other side. Wadding breaks down quickly on depleted side and box has local hot spots. I can't praise BTB enough. Their tig and mig welding is the best i have ever seen. The carbon tubes they use are bought in and are much more substantial than R500 cheesman crap, which badly overheat and turn brown and then fall to bits. One other advantage of using a carbon silencer is that it runs cool to the touch and so you don't have to run the strap on heat shield, saving even more weight. BTB Exhaust Systems. http://www.racecar.co.uk/btb/index.html SB Developments. http://www.sbdev.co.uk/ Look under exhaust systems for pictures and specs. Best to take / send your silencer to BTB if you are happy with the current shape and routing, clearences. They will then make up a jig. They already have several jigs for various 7 and 7 type cars. Anybody needing a SLR 6" non cat silencer, can have it off the shelf as jig already exists. I would suggest BTB and not SBDEV as BTB will make you a custom unit to your specific requirements. SBDEV will supply a generic silencer and probably won't be interested in custom work / materials (titanium etc). BTB make all SBDEV'S kit anyway. Edited by - tbhall777 on 12 Apr 2001 01:21:14 Edited by - tbhall777 on 12 Apr 2001 01:42:49 Link to comment Share on other sites More sharing options...
Number Six Posted April 12, 2001 Share Posted April 12, 2001 Brent, If Arnie was still doing CF I would be very tempted, but for my money now I would investigate Ti, especially if you have a polished ali body - the Ti looks the business and compliments the ali and sounds great and is strong and light. Check any motorcycle mags for details. Andy Link to comment Share on other sites More sharing options...
Mike Biddle Posted April 12, 2001 Share Posted April 12, 2001 Brent, I have a stainless BTB system including carbon silencer, and am very pleased with it after three years and around 12,000 kms of hard use. the only downside was having to polish it every month or so and I have solved that by having it ceramic coated, looks great and just gets washed along with the rest of the car to keep it that way. With hindsight i would have ordered the system unpolished and used the cash saved to have it ceramic coated. Titanium might also be a good way to go. i will e-mail you a picture. MIKE. Link to comment Share on other sites More sharing options...
AMMO Posted April 12, 2001 Share Posted April 12, 2001 I want to make a titanium silencer as my stainless 5" silencer weighs 6 kilos. In terms of weight it should be possible to get it down to 3 to 3.5 kilos. I would like to stick with 5" if the noise can be kept down as I think the 6" looks too big. Not too keen on the heat shield. Does anyone run without? Any problems with passengers burning their ankles as they get in the car? I assume this is what the heat shield is there for. AMMO Link to comment Share on other sites More sharing options...
Nigel Abbott Posted April 12, 2001 Share Posted April 12, 2001 Ammo, I run my car without a heat shield (bl**dy huge Raceline exhaust) - so far it's claimed two burns for two different people - one of which had to go on anti-biotics to get it cleared up - nasty! Still haven't fitted a heat shield though (just spiteful like that I guess!) Nigel Abbott Link to comment Share on other sites More sharing options...
AMMO Posted April 12, 2001 Share Posted April 12, 2001 Nigel Looks like I'll be running the heat shield after all. Link to comment Share on other sites More sharing options...
I.Mupferit Posted April 12, 2001 Author Share Posted April 12, 2001 tbh/Mike Thanks for the replies, I will try BTB. Any ideas what the sound level is from your CF silencers and are they easy to re-pack. I also like the idea of running without the heat shield, but wouldn't contemplate it on the standard silencer. Although it's true to say that you only burn your ankle the once; my son did when Paul Kite took him for a spin on the day I ordered mine. He now enters the car from a standing position at least 2' away! Brent Link to comment Share on other sites More sharing options...
allegro Posted April 12, 2001 Share Posted April 12, 2001 I would love a carbon exhaust, but have stretched my self to buy the car, so would find it hard to justify spending 400-500gbp to the wife. All I want is a collector to loose the cat off my SLR. Anybody know where I can get one without spending 160gbp at Caterham. Any of you SLR owners out there who have fitted carbon systems got an oldy to sell. Andy Mac Link to comment Share on other sites More sharing options...
Mike Biddle Posted April 12, 2001 Share Posted April 12, 2001 Brent, sound level from the carbon can is bloody marvellous!, can't tell you what decibels or whatever, nobody cares about such mundane matters here. I can tell you that the exhaust note is quieter and a deeper tone than a comparable metal item, Much better all round when you also take into account the safety aspect as well, i.e, no burnt legs, particularly as i have to get in and out on that side. (left drive) MIKE. Link to comment Share on other sites More sharing options...
CHRIS CLARK Posted April 12, 2001 Share Posted April 12, 2001 Brent. Mike Bees used an exhaust system made up for Mick Smith (modified 'K' 1800) that had a great power curve on the RR with none of the R500 'hesitation' at 5500rpm. It was made by "Powerspeed", unit 1, Oak Tree Cottage, Boat Lane, Aldington, Nr. Ashford, Kent TN25 7BL Phone & fax 01233 720467 mob 0374 464805 Not carbon, but real good!!!!!!!!!!!!!!!!!! Link to comment Share on other sites More sharing options...
Graham Perry Posted April 12, 2001 Share Posted April 12, 2001 Brent, Just had a BTB Carbon jobby bespoke made myself. Wonderfully light, and quieter than the original hand made one that had loads of packing in it. Not cheap at GBP 350 + but does the business. I had a look at their welding and although of an extremely high standard, I thought SES at Croydon, who made my manifold,collector and original silencer were slightly better. A good tip when comparing welding in exhaust systems is to look inside the collector where it is the most difficult place to weld.It should be a work of art and the point where the pipes split should have perfect sharp edges, with not even a hint of 'blobbing'. BTB though were great guys and I would have no hesitation in recomending them. Link to comment Share on other sites More sharing options...
EFA Posted April 12, 2001 Share Posted April 12, 2001 Just for info, BTB bought many carbon tubes for their exhausts from me. If they are making them still now I guess they had a stockpile or they have someone else making them now. My cans used BTB spun ends, but the rest of the metalwork was done by Hayward and Scott. Arnie Webb The Fat Bloke blush.gif in a not so Slow Vauxhall wink.gif See the R500 eater here See the Le Mans Trip Website here Link to comment Share on other sites More sharing options...
I.Mupferit Posted April 12, 2001 Author Share Posted April 12, 2001 Thanks guys, I'm on the trail of the perfect silencer now. Brent Link to comment Share on other sites More sharing options...
CHRIS CLARK Posted April 12, 2001 Share Posted April 12, 2001 It's about 100 mm long and can stifle the report from a 'Walther' PPK with no problem. Yes Brent, another hobby !!!!!!!!!!!!!!!!!!! Link to comment Share on other sites More sharing options...
Number Six Posted April 13, 2001 Share Posted April 13, 2001 Screw on or push fit? Andy Link to comment Share on other sites More sharing options...
I.Mupferit Posted April 13, 2001 Author Share Posted April 13, 2001 Trouble is Chris, I reckon it will be a struggle to fit that on to my collector teeth.gif Link to comment Share on other sites More sharing options...
CHRIS CLARK Posted April 13, 2001 Share Posted April 13, 2001 Brent. Good for the late payment debt collector though !!!!!!!!!!! Link to comment Share on other sites More sharing options...
I.Mupferit Posted April 13, 2001 Author Share Posted April 13, 2001 This site becomes more surreal every day, but I like it! teeth.gif Link to comment Share on other sites More sharing options...
CHRIS CLARK Posted April 13, 2001 Share Posted April 13, 2001 Lateral thinking, that's the answer! PS Brent. What models; I/C or electric ? Link to comment Share on other sites More sharing options...
I reply to every thread Posted April 17, 2001 Share Posted April 17, 2001 I can recomend Powerspeed as well. Odd set up but they custom made me a manifold (to get round my dry sump tank) for my W*******d for less than £100! Link to comment Share on other sites More sharing options...
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