2 into 1 exhaust?

BigMac · 07-15-2005, 12:45 PM

I know a few fellow 950 owner's and DIY guys had mentioned in the past about fabricating a 2-1 setup on the 950, I had been planning the experiment myself but unfortunately just have not found the time even though I have a friend with the mandrel tubing bender, SS tubing and TIG welder. The projects greatest appeal is opening up the left rear side of bike for a 3rd petrol tank of maybe 8-10 liters which may result in 250mi fuel range...or at least that is my optomistic hope. Anyway, Summer is here, my son and I are looking to do some riding in Central America and I'm still handicapped with 150-160 mile fuel range...maybe 175 if I really nurse her along.

So, has anybody successfully completed their 2-1 exhaust? If so, would you be interested in your 1st customer? If not, at least be willing to share your experiences, design, pitfalls and maybe success? Take care.

k7 · 07-15-2005, 01:03 PM

Wish I could help - it's an admirable goal but is a 150-180 mile range really that much of a handicap? I've traveled in Mexico, Guatemala and Belize and was never (overly) concerned about running out of gas.

I'll admit I've purchased gas out of a barrel but another 50-miles wouldn't have made a difference in those instances. No flames intended!

CraigTransalp · 07-15-2005, 01:52 PM

If you have the cash, these guys will do the 2 into 1 section at very high level of quality. Smooth as a baby's bottom inside and outside welds.
www.burnsstainless.com

autorotate · 07-15-2005, 03:33 PM

244.3 miles till bone dry

Configuration: Myself (230 lbs) and the KTM 46L topcase loaded with 25lbs.

Environment: 50% Paved, the other 50% a mix of gravel/dirt roads.

Had a gas can, and had to see for myself what the range was.

Low fuel light came on at 169, 173, and finally stayed illuminated at 177...

Puttered to a stop and the trip odo read 244.3 miles

AntWare · 07-15-2005, 03:42 PM

There was a fella here, I think from one of the Scandanavian countries that had done a nice job on the single exhaust.

I reckon only having a spare fuel cell on one side might fell odd, especially as the weight fluctuates from full to empty (20lb swing). It would likely need it's own fuel pump as well.

I've done 220+ and never ran out, might have to try Auto's experiment one day.

Mack · 07-15-2005, 04:34 PM

Quote:

Originally Posted by Ant Ware

There was a fella here, I think from one of the Scandanavian countries that had done a nice job on the single exhaust.

I reckon only having a spare fuel cell on one side might fell odd, especially as the weight fluctuates from full to empty (20lb swing). It would likely need it's own fuel pump as well.

I've done 220+ and never ran out, might have to try Auto's experiment one day.

I had emailed him, and he cross posted to http://www.monomaniacs.nl/smf.htm (might have been 950owners site, but I'm 99% it was mm.) Can't find any of it now.

autorotate · 07-15-2005, 04:35 PM

Are these the guys?????

http://www.evamotor.nl/

Fresno · 07-15-2005, 04:55 PM

Quote:

Originally Posted by CraigTransalp

Smooth as a baby's bottom inside

I don't think thats what he meant.

JediBri · 07-15-2005, 05:08 PM

Quote:

Originally Posted by autorotate

Low fuel light came on at 169, 173, and finally stayed illuminated at 177

Ditto. Shouldn't the 950 be well into the 200s before running out? When Bike did the adventure test last year they had the warning light listed at 170mi and out at 256mi...

Brian

Flanny · 07-15-2005, 05:32 PM

I need extra range. I can only get about 320 kms out of a tank, and no, that is not enough around here. We often explore areas where it is 280-300 kms to known gas, but with an uncertain route to get there. If we travel 230kms, only to find that a beaver has dammed the road, we need to go back! So, the stock range is not enough.

We've taken to carrying extra fuel strapped onto the back rack on onto the saddle bags. It's really not that bad...but it's certainly less safe, and not optimal weight placement.

I would kill for a "low" routed 2-into-1 like on the 950 Rallye...

Mack · 07-15-2005, 05:35 PM

Stillborn, but I can't find the other thread, damn JM mods have trashed the backroom, fast food wrappers and porno mags everywhere, and cigar buttes in the server. Clean up on aisle 7, where is Meatpopsicle?

http://www.ADVRider.com/forums/showt...ghlight=single

SQD8R · 07-15-2005, 05:37 PM

I looked into doing a 2-1 on my RC51 (R.I.P.'s

) like the 1st season AMA bikes were some years back. I checked with local fabricators, living in Windsor, Canada's motor capital, had some advantages, and found that it could be done relatively easily and @ less expense than a pro-job. Also a racer in the Canadian Race series has an RC51 with this configuration. I'm headed to MoSport for the 3rd round tomorrow. If he's there, and still using this configuration, I'll get some pics for you. While not the same degree of angle it can provide for some basics. If nothing else you may have a starting point for some ideas.

SQD8R · 07-17-2005, 06:00 PM

sorry boys, the guy I knew who did it on the RC51 has switched to an underseat exhaust this season. Good luck with this endeavour and keep posting updates pls.

BigMac · 07-17-2005, 07:00 PM

Well since it appears nobody has yet actually built such a system, I'm volunteering to be the guinea pig. In order to get the design hopefully close to ideal for scavenging purposes, I need some engine specs. I already know the cylinder angle, valve sizes and header OD, I cannot however find the cam specs nor port size and shape. Yes, I could simply take things apart and measure but I'm hoping somebody may have the info such that I can still ride my bike while I'm designing and fabricating the new system. I need intake and exhaust port diameters and shape or cross-sectional area, the cam lift for intake & exhaust, cam timing (degrees) at lift centerline, intake and exhaust duration at 0.050" lift or where duration is measured and cam timing for opening of intake and exhaust valves (degrees btdc/atdc).

If I can recieve the above info by end of this week, I will have a prototype 2-1 system installed and operating by August 1. Please help the cause if you have access to this info.

As for exhaust can, no problem. I'm going to use a Scorpion SS can designed for R12GS. It's an 18" perf core straight through design that can easily accomodate the exhaust flow of a 950 twin. I'm even going to remove the end cap to install a Pro Moto billet endcap which features a USFS approved spark arrestor and a removable throat collar to attenuate noise levels to within 92db EU regs. Once system is built and has been dyno tuned, I will be happy to share all specs and materials used by posting them on this board. Take care.

AFekete · 07-17-2005, 09:03 PM

We're working on the rally two into one setup...stay tuned..

thanks,
Andrew

07-15-2005, 12:45 PM	#1
BigMac ^OP Gnarly Adventurer Joined: Nov 2004 Oddometer: 314	2 into 1 exhaust? I know a few fellow 950 owner's and DIY guys had mentioned in the past about fabricating a 2-1 setup on the 950, I had been planning the experiment myself but unfortunately just have not found the time even though I have a friend with the mandrel tubing bender, SS tubing and TIG welder. The projects greatest appeal is opening up the left rear side of bike for a 3rd petrol tank of maybe 8-10 liters which may result in 250mi fuel range...or at least that is my optomistic hope. Anyway, Summer is here, my son and I are looking to do some riding in Central America and I'm still handicapped with 150-160 mile fuel range...maybe 175 if I really nurse her along. So, has anybody successfully completed their 2-1 exhaust? If so, would you be interested in your 1st customer? If not, at least be willing to share your experiences, design, pitfalls and maybe success? Take care.

07-15-2005, 01:03 PM	#2
k7 Ancien Joined: Jul 2002 Location: Right here Oddometer: 16,346	Wish I could help - it's an admirable goal but is a 150-180 mile range really that much of a handicap? I've traveled in Mexico, Guatemala and Belize and was never (overly) concerned about running out of gas. I'll admit I've purchased gas out of a barrel but another 50-miles wouldn't have made a difference in those instances. No flames intended! __________________ Cheers, Gerry PHX AZ Exhaustion and exhilaration are my friends.

07-15-2005, 01:52 PM	#3
CraigTransalp Gnarly Adventurer Joined: Oct 2004 Oddometer: 137	Burns Stainless If you have the cash, these guys will do the 2 into 1 section at very high level of quality. Smooth as a baby's bottom inside and outside welds. www.burnsstainless.com __________________ Craig '90 Honda Transalp Red '93 Honda XR650L CraigTransalp screwed with this post 07-15-2005 at 01:53 PM Reason: edit

07-15-2005, 03:33 PM	#4
autorotate Adventurer Joined: Mar 2005 Location: El Paso Oddometer: 64	Am I doing something wrong?? 244.3 miles till bone dry Configuration: Myself (230 lbs) and the KTM 46L topcase loaded with 25lbs. Environment: 50% Paved, the other 50% a mix of gravel/dirt roads. Had a gas can, and had to see for myself what the range was. Low fuel light came on at 169, 173, and finally stayed illuminated at 177... Puttered to a stop and the trip odo read 244.3 miles

07-15-2005, 03:42 PM	#5
AntWare Lost In Translation Joined: Oct 2002 Oddometer: 16,483	There was a fella here, I think from one of the Scandanavian countries that had done a nice job on the single exhaust. I reckon only having a spare fuel cell on one side might fell odd, especially as the weight fluctuates from full to empty (20lb swing). It would likely need it's own fuel pump as well. I've done 220+ and never ran out, might have to try Auto's experiment one day. __________________ Choose Life. Choose a job. Choose a career. Choose a family. Choose a fucking big television. Choose sitting on that couch watching mind-numbing, spirit-crushing game shows, stuffing fucking junk food into your mouth. Choose rotting away at the end of it all, pishing your last in a miserable home, nothing more than an embarrasment to the selfish, fucked up brats you spawned to replace yourself. Choose your future. Choose life. I chose not to choose life, I chose something else instead.

07-15-2005, 04:35 PM	#7
autorotate Adventurer Joined: Mar 2005 Location: El Paso Oddometer: 64	Are these the guys????? http://www.evamotor.nl/

07-15-2005, 05:32 PM	#10
Flanny Flanny-it-up! Joined: Feb 2003 Location: Ottawa, Ontario, Canada, the World, the Universe Oddometer: 2,744	I need extra range. I can only get about 320 kms out of a tank, and no, that is not enough around here. We often explore areas where it is 280-300 kms to known gas, but with an uncertain route to get there. If we travel 230kms, only to find that a beaver has dammed the road, we need to go back! So, the stock range is not enough. We've taken to carrying extra fuel strapped onto the back rack on onto the saddle bags. It's really not that bad...but it's certainly less safe, and not optimal weight placement. I would kill for a "low" routed 2-into-1 like on the 950 Rallye... __________________ Flanny Flanny-it-up!...Check out the FlannyMedia Web Site and Blog at www.FlannyMedia.Com

07-15-2005, 05:35 PM	#11
Mack Gone, but never forgotten. RIP, Mack... Joined: Sep 2002 Location: Austin, Texas USA Native Oregonian Oddometer: 3,797	Stillborn, but I can't find the other thread, damn JM mods have trashed the backroom, fast food wrappers and porno mags everywhere, and cigar buttes in the server. Clean up on aisle 7, where is Meatpopsicle? http://www.ADVRider.com/forums/showt...ghlight=single __________________ Ã–sterreichische MotorrÃ¤der und deutsche Autos. Wie wundervoll kann das Leben sein

07-15-2005, 05:37 PM	#12
SQD8R Eat squids and be merry Joined: Jun 2004 Location: The Village: 75°53'34"W, 45°17'42"N Oddometer: 7,341	I looked into doing a 2-1 on my RC51 (R.I.P.'s ) like the 1st season AMA bikes were some years back. I checked with local fabricators, living in Windsor, Canada's motor capital, had some advantages, and found that it could be done relatively easily and @ less expense than a pro-job. Also a racer in the Canadian Race series has an RC51 with this configuration. I'm headed to MoSport for the 3rd round tomorrow. If he's there, and still using this configuration, I'll get some pics for you. While not the same degree of angle it can provide for some basics. If nothing else you may have a starting point for some ideas. __________________ 2006 BMW HP2E: Teutonic Dreadnought 2011 Husqvarna TE630: Swedish heritage, German engineering, Italian flair 2011 BMW S1000RR: The Barvarian Bullet Married men don't live longer, it just seems longer. Sour grapes are a lesser man's fruit.

07-17-2005, 06:00 PM	#13
SQD8R Eat squids and be merry Joined: Jun 2004 Location: The Village: 75°53'34"W, 45°17'42"N Oddometer: 7,341	sorry boys, the guy I knew who did it on the RC51 has switched to an underseat exhaust this season. Good luck with this endeavour and keep posting updates pls. __________________ 2006 BMW HP2E: Teutonic Dreadnought 2011 Husqvarna TE630: Swedish heritage, German engineering, Italian flair 2011 BMW S1000RR: The Barvarian Bullet Married men don't live longer, it just seems longer. Sour grapes are a lesser man's fruit.

07-17-2005, 07:00 PM	#14
BigMac ^OP Gnarly Adventurer Joined: Nov 2004 Oddometer: 314	Cam and port specs Well since it appears nobody has yet actually built such a system, I'm volunteering to be the guinea pig. In order to get the design hopefully close to ideal for scavenging purposes, I need some engine specs. I already know the cylinder angle, valve sizes and header OD, I cannot however find the cam specs nor port size and shape. Yes, I could simply take things apart and measure but I'm hoping somebody may have the info such that I can still ride my bike while I'm designing and fabricating the new system. I need intake and exhaust port diameters and shape or cross-sectional area, the cam lift for intake & exhaust, cam timing (degrees) at lift centerline, intake and exhaust duration at 0.050" lift or where duration is measured and cam timing for opening of intake and exhaust valves (degrees btdc/atdc). If I can recieve the above info by end of this week, I will have a prototype 2-1 system installed and operating by August 1. Please help the cause if you have access to this info. As for exhaust can, no problem. I'm going to use a Scorpion SS can designed for R12GS. It's an 18" perf core straight through design that can easily accomodate the exhaust flow of a 950 twin. I'm even going to remove the end cap to install a Pro Moto billet endcap which features a USFS approved spark arrestor and a removable throat collar to attenuate noise levels to within 92db EU regs. Once system is built and has been dyno tuned, I will be happy to share all specs and materials used by posting them on this board. Take care.

07-17-2005, 09:03 PM	#15
AFekete Beastly Adventurer Joined: Apr 2002 Oddometer: 3,208	Neptune Exhaust.... We're working on the rally two into one setup...stay tuned.. thanks, Andrew __________________ --------------------------------------------------- www.advworkshop.com

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