Steve (dug) Richards
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 posted on 19/9/07 at 03:55 PM |
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BIG FAT SILENCER
I was wandering if anyone knew where i could get a nice quiet can for my indy i am running a 05 R1 with mks manifold which has a 2inch pipe to bolt on
to.
And if you read this kev there not gay
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stevec
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| posted on 19/9/07 at 04:05 PM |
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The one Here Cost £90 including the turned and radiused
outlet. It is very quiet.
Steve.
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Andy W
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| posted on 19/9/07 at 04:10 PM |
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How about a R1 Can?
 
Pinto starter 1
Andy
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TimC
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| posted on 19/9/07 at 04:35 PM |
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You want to go REALLY big with that high reving bike motor. I'm trying to think of the name that all the Westfield Sprint guys use.
Tech..summat... Dammit can't remember, but think HUUUUGE!
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Furry
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| posted on 19/9/07 at 05:03 PM |
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hi tim,
i think your thinking of tech craft. i intend to fit one on my westy.
furry
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Toady1
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| posted on 19/9/07 at 07:35 PM |
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yeah they are huge, and great for trackdays, but not very locost iirc! Not that mine has turned out to be either! lol!
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Toady1
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| posted on 19/9/07 at 07:36 PM |
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quote:
Originally posted by stevec
The one Here Cost £90 including the turned and radiused
outlet. It is very quiet.
Steve.
pretty sure that wont quieten down a bec enough!
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ChrisGamlin
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| posted on 19/9/07 at 07:40 PM |
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Mine's a 29 x 7" Simpson silencer which does a good job on my '03 R1, cost about £220
Anything sub 6" and/or shorter than about 25" maybe OK on turbocharged cars etc, but it isn't going to silence a BEC sufficiently
unfortunately.
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stevec
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| posted on 19/9/07 at 07:53 PM |
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quote:
Originally posted by Toady1
quote:
Originally posted by stevec
The one Here Cost £90 including the turned and radiused
outlet. It is very quiet.
Steve.
pretty sure that wont quieten down a bec enough!
It dosn't have to be big to be efficient.
The R1 Can on my bike engine car only just scraped trough SVA.
Steve.
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Avoneer
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| posted on 19/9/07 at 07:54 PM |
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Chris - what sort of db does your can give and what's the sound/performance like?
Pat...
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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ChrisGamlin
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| posted on 19/9/07 at 08:30 PM |
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quote:
Originally posted by stevec
It dosn't have to be big to be efficient.
The R1 Can on my bike engine car only just scraped trough SVA.
Steve.
Hi Steve
A small silencer can be quiet fairly easily, and a small silencer can be free flowing, but Ive yet to see one that does both. 
Its worth remembering about the R1 cans as well that they fairly quickly degrade and get quite noisy. You could have picked up one that was already on
its way out because people have got normally aspirated BECs through SVA with an R1 can, so a turbocharged car like yours (where the turbo absorbs a
lot of the noise) is very unlikely to be louder I wouldnt think, certainly with a friend's BEC turbo busa its significantly quieter now with the
turbo despite running the same silencer etc.
cheers
Chris
[Edited on 19/9/07 by ChrisGamlin]
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ChrisGamlin
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| posted on 19/9/07 at 08:37 PM |
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quote:
Originally posted by Avoneer
Chris - what sort of db does your can give and what's the sound/performance like?
Pat...
Hi Pat,
Ive not been on a trackday that has tested it properly yet but I tested it myself with a noise meter I borrowed that's at least as good as those
used on most trackdays and it was between 96-97db at a true 8,000rpm, so will be lower than that on most 3/4 tests where you can generally get away
with 7 - 7.5k. With the knackerd R1 can it was about 105db!
Also this is with an open sausage filter and a hole in the bonnet so Im getting a lot of induction noise in there, I reckon with a proper airbox I
could get that down below mid-90's quite easily.
cheers
Chris
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stevec
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| posted on 19/9/07 at 08:46 PM |
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quote:
Originally posted by ChrisGamlin
quote:
Originally posted by stevec
It dosn't have to be big to be efficient.
The R1 Can on my bike engine car only just scraped trough SVA.
Steve.
Hi Steve
A small silencer can be quiet fairly easily, and a small silencer can be free flowing, but Ive yet to see one that does both.
Its worth remembering about the R1 cans as well that they fairly quickly degrade and get quite noisy. You could have picked up one that was already on
its way out because people have got normally aspirated BECs through SVA with an R1 can, so a turbocharged car like yours (where the turbo absorbs a
lot of the noise) is very unlikely to be louder I wouldnt think, certainly with a friend's BEC turbo busa its significantly quieter now with the
turbo despite running the same silencer etc.
cheers
Chris
[Edited on 19/9/07 by ChrisGamlin]
Good point. No wonder my ears are still ringing 6 months on
Steve.
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Gixer Indy
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| posted on 20/9/07 at 09:08 AM |
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quote:
Originally posted by Andy W
How about a R1 Can?
Pinto starter 1
Andy
Just put one of these from Andy on mine, very pleased with it, no more bleeding ears!
Flat out til you see God, then BRAKE!
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CosKev3
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| posted on 20/9/07 at 08:22 PM |
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quote:
Originally posted by Steve (dug) Richards
And if you read this kev there not gay
Just cause your over 30 now doesn't mean you have to act like an old man!!!!!
You need a nice sounding sporty exhaust note,not a quiet one
Leave it alone
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Toady1
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| posted on 20/9/07 at 09:08 PM |
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i have a remus back box on mine which looks very similar in size to yours steve, i failed the noise test at my last trackday at 103db, and that was
with me gutting the original sound wadding, and repacked it with a full bag of merlin motorsports stuff. had to put a tail piece thing on it to get
back on track!
Im going to go for something like you have chris!
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TimC
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| posted on 21/9/07 at 11:08 AM |
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Tech Craft - that's the fellas.
ChrisG's performance? - pretty bloody good if you look at the Cadwell videos!
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ChrisGamlin
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| posted on 21/9/07 at 10:38 PM |
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Cheers Tim, was a good day that. Sadly the Spa ones aren't quite so good!
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