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Old 11-07-2004, 08:22 PM   #1
K2ride OP
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Question Howbout a two in one exhaust system?

Looking at the possibility of fabricating a two in one set up like the Dakar bikes:
- Pipes routed as the Rally bikes
- Single can
- Looks are not of importance but efficiency & sturdiness are!

Next step would naturally be custom bash plate & carbon/kevlar rear side tanks + subframe; long winters up here!

Any ideas on what`s involved here?
- Materials to be used
- Carb & engine tuning
- Heat dissipation

Any & all inputs appreciated!
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Old 11-07-2004, 08:56 PM   #2
celtic kiwi
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rear tanks

the tanks from eva motor require those sort of pipes , could a standard akra handle twice the flow ,or would the pipe just hit a point where the gas pressure would stop much baffling and just go straight out , and be real loud ?

or could you route it to remain as a 2-1-2 system?
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Old 11-07-2004, 09:22 PM   #3
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Quote:
Originally Posted by celtic kiwi
the tanks from eva motor require those sort of pipes , could a standard akra handle twice the flow ,or would the pipe just hit a point where the gas pressure would stop much baffling and just go straight out , and be real loud ?

or could you route it to remain as a 2-1-2 system?
Might take a long time before the Eva motors tanks see daylight & still no mention of exhaust mods on their site!

As for a 2-1-2 system, one of the reason for rerouting the pipes is to diminish the heat from the rear cylinder pipe that radiates in that tight engine/clutch/shock area; a 2 in 1 system is needed for this.
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Old 11-08-2004, 05:57 AM   #4
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Quote:
Originally Posted by K2ride
Might take a long time before the Eva motors tanks see daylight & still no mention of exhaust mods on their site!

As for a 2-1-2 system, one of the reason for rerouting the pipes is to diminish the heat from the rear cylinder pipe that radiates in that tight engine/clutch/shock area; a 2 in 1 system is needed for this.

I've been really seriously contemplating this mod.

I think stainless steel is the best bet for material, with a carbon fibre can made for a 1000cc bike (to make sure there is enough flow). Titanium would be nice once the design is worked out.

Once the pipes are rerouted, I think a tank could be made under the seat to replace the current tool stash. Carbon Fibre using the lost foam method would work well for this I think.

Lastly, the bash plate could brobably remain stack, but with a new right side piece made out of carbon fibre.

Yep -- I was definitely thinking of this as a winter project.

Let me know how you make out!
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Old 11-08-2004, 03:03 PM   #5
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Quote:
Originally Posted by Flanny
I've been really seriously contemplating this mod.

I think stainless steel is the best bet for material, with a carbon fibre can made for a 1000cc bike (to make sure there is enough flow). Titanium would be nice once the design is worked out.
Hi Flanny. Just to get inspiration going, here's a link to a winter project (two winters actually) of my friend Overland. He cooked up the stainless steel tubing himnself (!) and completed his 660 single with a Yamaha R1 Akrapovic Titanium. A big muffler, and what a sound! A bit like a rolling subwoofer.
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Old 11-08-2004, 08:02 PM   #6
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Like this?
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Old 11-08-2004, 06:07 AM   #7
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Quote:
Originally Posted by K2ride
As for a 2-1-2 system, one of the reason for rerouting the pipes is to diminish the heat from the rear cylinder pipe that radiates in that tight engine/clutch/shock area; a 2 in 1 system is needed for this.
I wonder if heat may have anything to do with the clutch creep problem?
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Old 11-09-2004, 08:49 AM   #8
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Quote:
Originally Posted by Greg Minor
I wonder if heat may have anything to do with the clutch creep problem?
Apparently, against Meoni`s advice, KTM went the set up we now have on our bikes for reasons of appeal to the public; under seat dual pipes is the hot setup these days!

As for Meoni`s advice, one of the reason for keeping the rally bike setup was to diminish heat radiating on the clutch area; don`t know if it could solve the creeping but I think it would help in the long run!
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Old 11-09-2004, 01:23 PM   #9
CraigTransalp
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[QUOTE=K2ride]Looking at the possibility of fabricating a two in one set up like the Dakar bikes:

Any ideas on what`s involved here?
- Materials to be used
- Carb & engine tuning
- Heat dissipation

Try:
Burns Stainless
1013 W. 18th St. P: 949-631-5120
Costa Mesa Ca, 92627 F: 949-631-3184

Casey@burnsstainless.com

http://www.burnsstainless.com

These guys do real high end stuff for NASCAR.
I asked them to make a two into one 1 1/2 in dia stainless steel section. Inside and ouside welds are smooth as a babies bottom!
Craig
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Old 11-10-2004, 07:14 PM   #10
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Now we`re getting somewhere!
Keep`m coming!
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