Decent Exhaust Pipes?

[Duc750]

Rhino

Renegade exhausts at Brands Hatch may still be around - they used to make pipes to order - you can borrow my Lazers as a pattern if you want ?

Actually if you can find someone UK based to make them you can borrow them as a pattern for anyone.

Definitely try giving Baines racing a call to see if they know of a UK source for cans or someone who will make them.

Definitely go with Stainless or Ti if you get the chance the sound is better (crisper) carbon can get blown apart unless its carbon sleeve over Ti construction and then you may aswell have Ti !

Blue flame will make a slip on Can that will probably do the job (as will just about any manufacturer) it will be the link pipe that is the problem but there are still decent exhaust builders out there (none spring to mind at the moment though)

a quick google search produces these guys
http://www.osmc.co.uk/exhaust.htm

NRP who have already mentioned

http://www.gazbike.demon.co.uk/


These guys might be interested too

http://www.mtcexhausts.co.uk/index.htm


I'm thinking of just getting a set of link pipes made so I can break out to more commonly available silencers as and when I need

I may have mislead you earlier

TTS and PDQ are Dyno tuning companies for setting the fuelling up once you've got the cans etc.
You may be abel to get away without a chip in any case and just use a TFI box from techlusion as its a pretty simple fuel injection setup

[907pasonut]

Definitely go with Stainless or Ti if you get the chance the sound is better (crisper) carbon can get blown apart unless its carbon sleeve over Ti construction and then you may aswell have Ti !

Duc750, you seem to know your exhaust pipes...for my 851 the best look I think would be CF, keeping the look of the superbikes, what do you mean by "carbon sleeve over Ti construction" what sort of process is that and what is Ti?...I would be interested to find out

[Rhino]

Claude - Ti is the atomic (Periodic) shorthand for Titanium

[Duc750]

Most decent Carbon cans are Carbon wrap over a Ti sleeve - termis and Feraccis are I believe - the problem with some of the all carbon ones on big twins is they get blown apart over time which is not so good.
Carbon has an inherent ability to isolate vibration and therfore dampen sound so it tends to make the exhaust note more "woofly" than a stainless or Ti can which is more crisp.
The up side to carbon is that it also is cooler to the touch which helps a lot with High level pipes or underseats
There's naff all performance benefit between the same two cans made in say Ti or Carbon normally as the intenrals are the same, lengths the same etc etc.

[907pasonut]

Most decent Carbon cans are Carbon wrap over a Ti sleeve - termis and Feraccis are I believe - the problem with some of the all carbon ones on big twins is they get blown apart over time which is not so good.
Carbon has an inherent ability to isolate vibration and therfore dampen sound so it tends to make the exhaust note more "woofly" than a stainless or Ti can which is more crisp.
The up side to carbon is that it also is cooler to the touch which helps a lot with High level pipes or underseats
There's naff all performance benefit between the same two cans made in say Ti or Carbon normally as the intenrals are the same, lengths the same etc etc.

there is so much collective knowledge on this forum...we could just about build a desmodronic space shuttle...of couse it would have to be ducati red

thanks for that Duc750

[Duc750]

The only reason I ever acquired any of that knowledge is that I used to own a Suzuki TL1000- the standard question asked by those guys is how to make it sound better first which I always found odd as it should always have been how to make it handle better first and sound later.

[paso750]

the problem with some of the all carbon ones on big twins is they get blown apart over time which is not so good.

All carbon pipes don`t like excessive heat. That`s why about all carbon cans are absorbtion silencers.
Reflection silencers as most originals are heat up more as they are more restrictive.




Not a very good sign is when carbon cans start to discolor or get soft spots. That indicates that sooner or later there will be a hole or crack. (I already had that)
A Ti sleeve below the carbon is a good idea, I actually haven`t heard of that yet.

G.

[Duc750]

G

Yoshi carbon cans are carbon/Ti sleeve and have been for about 8 years I think. I believe Akra are too
Most of the UK manufacturers are too now for quality stuff.
As carbon starts to become a less desirable material I think more will switch and the wrap will get thinner and thinner until we end up back at a Ti can again

Regarding absorption type silencers I think most new to the market - aftermarket cans for the UK are absoprption type as it makes the core very easy to remove for More noise or more performance for the Gixxer brigade and can be replaced easily at MOT time
I would imagine doing that in Germany probably results in a not very nice telling off and a failure of the TUV test

Like that digram by the way

[93IE]

Staintunes on ebay

[Rhino]

I have just posted this on the thread Its mine and Finally Home

......................................
I have just been told about (and I am about to execute) a small alteration to the exhausts to get the rumble (you and) I want. I am informed (Tony Brancato of Brancato Ducati Engineering - a life-time on Dukes) that there is, in the very end of the silencers on the 907 a set of baffles. These baffles were not intended by the factory but were forced on them by various legislation in various countries (esp the USA). This baffle is located at the very end of the pipes and is held in place by two very small spot welds. These were designed by the factory to retain the baffle and are very easy to grind out and, if neccessary, replace by re-inserting and re-spot welding.

This modification - I AM TOLD - will not neccessitate any alteration to the engine set up at all (as after market pipes might).

I have just spoken (3 minutes ago) to the engineer where my bikes now are and he confirms the spot welds and the small baffle. I have instructed him to "get cutting".

I won't hear it run until I next see the bikes in February but I will let ya'll know.

..................................................

(must find out how do do quotes)

[higgy]

I did a similar mod to mine. removed the baffle put in a larger end pipe then machined out the outlet cap to match the larger pipe and rivitted the whole thing back together. I am very pleased with the somewhat deeper and slightly louder with out being raucous note

[Rhino]

Higgy - I'd love to see a picture of those pipes on the bike

[higgy]

I have as yet not had the time to finish the project,can't decide if I like it better in solid black or with the aluminium cover or maybe do something in some flavor de stainless
I plan to do a backpressure study in the near term but overall with just one side done it runs much better. I don't know what chip I have in it and the airbox is modified with a K&N filter

BTW, the diffuser went back in and is held by a single rivot so that I may remove it easily should I decide to modify it a little more as time goes by.

[Fraser]

Higgy,

Do not just restrict your exhaust cover options to those mentioned. As the pipe does not get very hot I've had great results covering the aluminium sleeve with plastic adhesive wrap (the stuff you line shelves and drawers with) and this has included; carbon fiber, wood grain (a nice oak finish), black speckeled marble (for that classic look), patterened stainless. The plastic wrap has never bubbled or melted and I just change it to suit; like every other year.
Cheers,
Fraser.

[Rhino]

Thanks Higgy - very informative - I love the pipes:- BLACK! Too cool