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kevmean
 Post subject: Re: new exhaust
PostPosted: 20 May 2010 19:27 
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Current ride: 1991 RS1200 westwind
albert666 wrote:
tonight i have noise tested the latest can, which i have been running in for a week now, it measured 104db @5000rpm, idles @ 98db
for a comparison i tried a scorpion 'chambered' can from a cbr600rr as its about the same size as my oval can
the scorpion idled @ 105db!!!!!!!!
i know it was designed for an i-4 but jesus!
a chap over the road from work has a bike breakers, he also owns an r1 with aftermarket cans, he was noise tested recently at a track at 103db,
his friend with a duke with termi's measured 120db
needless to say he didn't get on track
so thats where we're at
i tried an additional silencer but it spoils the lines of the bike and didn't really do diddly squat towards noise reduction.
i think 104-105 is where its gonna end up :headbang:


My X1 with race can made 116db..........................i think the standard 1125 can is 102 according to the vin plate...so 104 /105 isn't bad at all for such a small can :yup:

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wkd1
 Post subject: Re: new exhaust
PostPosted: 20 May 2010 19:32 
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albert666 wrote:
i'll make you a baffle, and post it to you :)



:worthy:

thanks


Wkd1

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albert666
 Post subject: Re: new exhaust
PostPosted: 20 May 2010 19:37 
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Current ride: EBR 1190RX
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did you cut the tailpipe down on the reverso,
just so i know what i'm aiming to make :)

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wkd1
 Post subject: Re: new exhaust
PostPosted: 20 May 2010 21:11 
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yes... im home on Monday i will try to get a pic or measurement?

had to do it twice, first time wasnt enough and led to a brown trouser moment on a roundabout.. :oooops:

Wkd1

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chris(madrid)
 Post subject: Re: new exhaust
PostPosted: 21 May 2010 08:00 
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kevmean wrote:
My X1 with race can made 116db
That's good. All I can manage in the V&H is 111.

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norrie
 Post subject: Re: new exhaust
PostPosted: 24 May 2010 18:43 
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Current ride: Cagiva Raptor 650
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You said the new can makes 104db at 5K and 98 at idle.
Have you tested the standard can at 5K and idle?
How about making a twin can like the Free Spirits one?

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albert666
 Post subject: Re: new exhaust
PostPosted: 24 May 2010 21:57 
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the only prob i have now is that my standard can isn't standard anymore, but if it says 102 db@5000rpm on the headstock
then 104 from a straight thru design isn't really that bad.
i'm currently working on the 'final solution'
hopefully i can get it finished this week then hopefully book a dyno day with tubbs again :)

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norrie
 Post subject: Re: new exhaust
PostPosted: 24 May 2010 22:04 
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Looking forward to it mate and good luck.

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sportster_mann
 Post subject: Re: new exhaust
PostPosted: 25 May 2010 09:24 
I have a bog-standard exhaust if you need one - both of my bikes are still running stock exhausts and I also have a spare !
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norrie
 Post subject: Re: new exhaust
PostPosted: 25 May 2010 16:11 
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I e-mailed Free Spirits to ask how loud there exhausts were and they sent me this.

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albert666
 Post subject: Re: new exhaust
PostPosted: 25 May 2010 18:04 
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sportster_mann wrote:
I have a bog-standard exhaust if you need one - both of my bikes are still running stock exhausts and I also have a spare !

are you collecting them??
cheers for the offer, i've made bigger dia primaries on mine now as well so i can't get the standard one on.

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Norton v4rr??



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albert666
 Post subject: Re: new exhaust
PostPosted: 26 May 2010 21:19 
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this is about a bigger volume silencer i can get on.
a lot of work involved with this one too
not noise tested it yet, ran out of time tonight

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Buell X1
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Ebr 1190rx
Bimota Db7
Norton v4rr??



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chris(madrid)
 Post subject: Re: new exhaust
PostPosted: 27 May 2010 07:50 
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End of page 18 LOOKS nicer. :coat:

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Beef
 Post subject: Re: new exhaust
PostPosted: 27 May 2010 16:29 
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Current ride: FUBAR...Enough said!
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That looks smart as Al :yup:

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albert666
 Post subject: Re: new exhaust
PostPosted: 27 May 2010 20:34 
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the noise test results were pretty much the same :(
around 104-105
gonna get some dyno figures on a few bits next week hopefully :)

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Buell X1
Buell xb12s
Buell 1125r
Ebr 1190rx
Bimota Db7
Norton v4rr??



http://www.aph-performance-engineering.com
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