Board logo

BIG FAT SILENCER
Steve (dug) Richards - 19/9/07 at 03:55 PM

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

stevec - 19/9/07 at 04:05 PM

The one Here Cost £90 including the turned and radiused outlet. It is very quiet.
Steve.

Andy W - 19/9/07 at 04:10 PM

How about a R1 Can?


Pinto starter 1
Pinto starter 1

Andy

TimC - 19/9/07 at 04:35 PM

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!

Furry - 19/9/07 at 05:03 PM

hi tim,
i think your thinking of tech craft. i intend to fit one on my westy.
furry

Toady1 - 19/9/07 at 07:35 PM

yeah they are huge, and great for trackdays, but not very locost iirc! Not that mine has turned out to be either! lol!

Toady1 - 19/9/07 at 07:36 PM

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!

ChrisGamlin - 19/9/07 at 07:40 PM

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.

stevec - 19/9/07 at 07:53 PM

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.

Avoneer - 19/9/07 at 07:54 PM

Chris - what sort of db does your can give and what's the sound/performance like?

Pat...

ChrisGamlin - 19/9/07 at 08:30 PM

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]

ChrisGamlin - 19/9/07 at 08:37 PM

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

stevec - 19/9/07 at 08:46 PM

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.

Gixer Indy - 20/9/07 at 09:08 AM

quote:
Originally posted by Andy W
How about a R1 Can?


Pinto starter 1
Pinto starter 1

Andy


Just put one of these from Andy on mine, very pleased with it, no more bleeding ears!

CosKev3 - 20/9/07 at 08:22 PM

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

Toady1 - 20/9/07 at 09:08 PM

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!

TimC - 21/9/07 at 11:08 AM

Tech Craft - that's the fellas.

ChrisG's performance? - pretty bloody good if you look at the Cadwell videos!

ChrisGamlin - 21/9/07 at 10:38 PM

Cheers Tim, was a good day that. Sadly the Spa ones aren't quite so good!