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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through April 16, 2008 » An interesting development on the 1125R exhaust front » Archive through February 28, 2008 « Previous Next »

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Al_lighton
Posted on Wednesday, February 27, 2008 - 10:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Now, before anyone starts asking how you buy this, you can't, yet.

One of our more adventuresome customers that lives in a cold climate has an 1125r, he has a whopping 50 miles on it so far. But he's still having his fun with it. He worked with a local fabricator to come up with the exhaust system below. He said I could post pictures here, but he doesn't hang here much.

It's too soon to talk about what it will do, how you can buy one, how much power it makes, etc. It hasn't even been dyno'd yet. It was built in the first iteration with smaller outlet pipes, but the sound was too "sharp", so they went to these tips which apparently boomed up the tone a bit.

They worked hard to get equal lengths on the intake runners. Those are two 4" diameter cans down there, and they fit into that area a lot better than I thought they would be able to.

They've got a lot of testing ahead of them, but if it works out they will be exploring how to offer it for sale.


1


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5


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Lots of cool work done there. I hope the performance results work out for them.

Al

(Message edited by al_lighton on February 27, 2008)
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M1combat
Posted on Wednesday, February 27, 2008 - 10:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

We need to hear it Al : ). Now.


Really though : )... Tell them we said thanks for the efforts : ).


(and get some good sound clips : ))
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Rasta_dog
Posted on Wednesday, February 27, 2008 - 10:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That plumbing is definitely looking good. I also would like to see a re-designed chin fairing to compliment the new exhaust. Oh...and having ridden the awesome 1125R at Mid Ohio, I'd be worried that this design would increase the already unbearable heat that my right foot was subjected to, because until I know that issue is fixed, I can't buy a 1125R
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Brad1445
Posted on Wednesday, February 27, 2008 - 10:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Wow, That wins the sexy race so far. HOT!
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Hwyranger
Posted on Wednesday, February 27, 2008 - 11:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'd be worried that this design would increase the already unbearable heat that my right foot was subjected to

That was a preproduction bike you experienced that heat on. I road one of the same at Inside Pass in October at Streets of Willow and that problem had evidently been taken care of.

As for my own 1125, I have not felt any problem with heat on my foot.
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Unibear12r
Posted on Wednesday, February 27, 2008 - 11:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

+1
No hot foot anymore!

Oh yes! Those are some great looking pipes!

(Message edited by unibear12r on February 27, 2008)
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No_rice
Posted on Thursday, February 28, 2008 - 12:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

that is pretty trick!

now what the heck kind of cans are those? something they made also?

atleast we are starting to get somewhere in the exhaust department!
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Arillius13
Posted on Thursday, February 28, 2008 - 12:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

WOW. By far the nicest ive seen yet. This one with the dual cans on the bottom actually looks like it should be there.

Im not a big fan of the straight pipe/header kind of look. Alteast not when its not covered up. If all the piping where wrapped or painted black that would look primo.

Im very interested as to where they got the cans from. I've been looking into designing a system of my own but I cant find any good places to get aluminum or even titanium cans from.
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Blazin_buell
Posted on Thursday, February 28, 2008 - 07:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

WOW!!! That's the nicest looking set yet. Anyone worried about color or heat is just a coating and wrapping session away from curing it. I'm also trying to figure out my own setup unless someone comes up with something I like first.
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Garrett2
Posted on Thursday, February 28, 2008 - 08:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i love it!
thats the best thing yet, thats for sure!
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Helicon
Posted on Thursday, February 28, 2008 - 09:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Looks Great! I know we don't have any sound clips or performance numbers ... but what is the ground clearance with these pipes? Looks a lot closer to the ground than stock.
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Nickcaro
Posted on Thursday, February 28, 2008 - 09:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


nice
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Jos51700
Posted on Thursday, February 28, 2008 - 09:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Damn, baby, that's a nice set of cans!
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Ratbuell
Posted on Thursday, February 28, 2008 - 09:39 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Warms my heart to see something that looks like a good ol' tuber (if you squint). Shock on one side, muffler on the other...except these are both mufflers. Nice look, can't wait to see how it performs!
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Slaughter
Posted on Thursday, February 28, 2008 - 09:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Y'know... having tuned a bunch of XB's and a couple XBRRs now - the lack of sniffer in each exhaust is crippling.

(just try talking the owners into paying for welding sniffer ports into their pipes... but I digress)

The ability to stick a standard sniffer into each tube is magnificent!

I wonder how the ECU will adjust to the fact that there is no interplay/scavenging without the 2-into-1 exhaust? You could tune it with aftermarket ECU which allows separate tuning for front/rear...

...keep us posted!

(can't argue that it just looks SCHWEEET!!)
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Ceejay
Posted on Thursday, February 28, 2008 - 09:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

No crossover(for lack of a better term)? I always thought it was imporatant for twins to have that. Course it does look excellent and probably sounds better than the "cat's meow" If it sounds better than an RC51, my pocketbook may be in trouble...
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Bearly
Posted on Thursday, February 28, 2008 - 10:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sweetness Al! Thata alooks amarvelous.

Muscular, simple, and for the most part under the bike. I like it.

Heat shield for rear brake line or lower the tips just a bit? 2ยข
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Spatten1
Posted on Thursday, February 28, 2008 - 01:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Badass! Nice work.
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Mikef5000
Posted on Thursday, February 28, 2008 - 01:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I would say weld a crossover between the two mufflers, where it's completely out of site.

I would also much prefer a much shorter muffler 'tip' sticking out each side, instead of both on one side.
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Blake
Posted on Thursday, February 28, 2008 - 01:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Cool.

Al,

If I am seeing things accurately and that is what is being proposed for production, I suspect that to achieve acceptable durability/longevity the manufacturer will find that they will need some serious reinforcement of the muffler support bracketry and possibly the header-pipe and tail pipe to muffler welded connections.

Just off the cuff, I'd tend to recommend avoiding welding bracketry to the exhaust tract, preferring instead a clamping connection scheme for supporting the muffler(s) and headers. A clamping scheme, as Buell has found with the air-cooled bikes, avoids stress peaks at welds and less than ideal bladed support scenarios that are so susceptible to fatigue failure.

If clamping only is unacceptable, then be sure to have all bracketry that is welded to the muffler engage it in a very very robust manner (little to no flexure). A blade welded to a thin wall cylinder where the blade is not nearly tangent to the thin wall of the cylinder is a VERY poor stress/strength configuration prone to cracking and fatigue failure. In fact I'd offer that when subject to cyclic stresses and given time such inferior welded bladed connection/support scheme are virtually guaranteed to fail.

The rear of each can where the cylinder meets the end plate offers excellent purchase for a good solid three member welded joint if a welded bracketed configuration is deemed necessary.

I'd also recommend that the manufacturer shot peen all the welds. This puts residual biaxial compressive stresses onto the surface of the welds and surrounding parent metal, thus aiding fatigue strength greatly. Fatigue cracks cannot start or propagate on a surface is in a state of biaxial compression stress; they require tension stress to grow/propagate.

Tailpipes as long as depicted act like big tuning forks just waiting to vibrate and cause fatigue failure. Their connection to the mufflers will need to bear the related stresses. As welded joints inherently suffer severe residual tensile stresses, up to 80% of yield strength, their combination with any significant R=-1 cyclic (fatigue) loading makes for a very challenging design problem. Shot peening may be enough to solve such a problem, if it should arise.

I know this is a different engine, without the extreme severe vibration environment of Buell's air-cooled mills, but make no mistake, there will be vibration and even dynamic loading due to aggressive riding over rough surfaces that can subject the exhaust system to some significant stresses.

I've seen plenty of exhaust system mounting schemes for IL4 and other liquid cooled sportbikes that have failed due to issues like I've described above, so I don't think the engine vibration can be ignored no matter the type of engine or how many counterbalancers it might have.

The OEM mufflers aren't heavy purely for their volume/size.

It might be enlightening to look at how Ducati and other big twin sportbikes support their mufflers, street, race, or otherwise.

Fun stuff.

If the manufacturer needs further stress analysis help/consultation, I'm available. : )
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Blake
Posted on Thursday, February 28, 2008 - 01:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The partially visible stamped logo on the left side can looks familiar. : )

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Spatten1
Posted on Thursday, February 28, 2008 - 01:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If the manufacturer needs further stress analysis help/consultation, I'm available.

Blake, I may call you too. I am stressed out way too much. Can you write scripts?
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Slaughter
Posted on Thursday, February 28, 2008 - 02:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Wonder HOW they're going to tune it?

The ECM in closed loop is relying on the effects of scavenging... and by eliminating the scavenging, doesn't it mean you MUST completely re-program different maps for each cylinder?

It WOULD be great to see a few dyno pulls at a few different throttle settings and see the sniffer readings.

(edit/add): Twould be great to put it on Glendale's racer... and if you'd be interested in some dyno results, we might do some horse-trading... you never know!

(Message edited by slaughter on February 28, 2008)
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Court
Posted on Thursday, February 28, 2008 - 02:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Blake:

I could use a "de-stressing" as well. You be traveling?

If you can get here during sex week it'd be the classic win-win.

: )
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Slaughter
Posted on Thursday, February 28, 2008 - 02:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you can get here during sex week it'd be the classic win-win.

Too Much INFORMATION. This is a visualization that NONE of us needed!
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Court
Posted on Thursday, February 28, 2008 - 02:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

No . . no . . no . . silly.

Sex Week is coming up at Columbia and it's always fun to have guests, particularly from the midwest.

Each day they have a different topic, lots of speeches, presentations and then the last night is "practical application Friday" starting at the Havana Bar on Broadway at 10:00PM.

Look . . .last time Blake was here we did like. . . well. . . fairly dull stuff, I just figured what the hell and he could get his own Trojan "Nice Package" shirt.
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Mikef5000
Posted on Thursday, February 28, 2008 - 03:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Look . . .last time Blake was here we did like. . . well. . . fairly dull stuff

Yeah, first date's can be like that, but think about it this way! If Blake and you never made it through the "dull stuff", you'd never be inviting him to "Sex Week"!
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Blake
Posted on Thursday, February 28, 2008 - 04:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sex "WEEK"!?

How about we just let you talk dirty on BadWeB for five minutes?

As for the dull stuff, you apparently, being on your honeymoon, had better things to do than expose this poor humble innocent son of a Methodist Minister to NYC's more "exciting" culture.

I take that back. On our first meetup in NYC back in 2001, you did take me to visit Henrik. Which was quite exciting as anyone who has met Henrik well knows.

Truth be told, after a Freshman Spring Break in Acupulco then later a week-long (off the oil rig) holiday in Reo, each enjoyed as a wild-eyed teenager, I think I've earned enough credits to opt out of sex week, so I guess I'm ready for "Cuddle Day" followed soon after by "Sleep, Snore, Scratch, and Fart Month."

The only stress relief I'm willing to help provide any of you perverts is the hot oven kind like we use to relieve and treat metalic structure.

Script? What kind of play are you writing Scott?

I'm a stress analyst, not a stress reliever.

(Message edited by Blake on February 28, 2008)
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Spatten1
Posted on Thursday, February 28, 2008 - 06:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Dood, I'm not serprized I speled script rong.

Cownt me owt for sex week.
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Interex2050
Posted on Thursday, February 28, 2008 - 10:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Now we are starting to get somewhere...
I eagerly await more...
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