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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through August 07, 2006 » Weight of 12 vs 9 « Previous Next »

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Spectrum
Posted on Friday, August 04, 2006 - 11:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
According to the Buell specs (see link below) the 12 is 10 pounds less than the 9. Tell me this is a typo? Other than fuel delivery, Primary Ratio and Stroke the technical specs are identical. So how could the 12 be 10 pounds lighter? This is true of the 12R/12X vs the 9R/9SX so I'm wondering if there really is a weight difference? I know the muffler is also different but surely that doesn't account for 10 pounds.

http://www.buell.com/en_us/bikes/comparebikes.asp?Bike1=XB12R&Bike2=XB9Rhttp://www.buell.com/en_us/bikes/comparebikes.asp?Bike1=XB12R&Bike2=XB9R
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Glitch
Posted on Friday, August 04, 2006 - 11:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
Interesting.
I have no answer.
But since factory specs aren't famous for being real world, there's no telling why.
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06xb12ss
Posted on Friday, August 04, 2006 - 11:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
From what I see the 9 is 10lbs ligther than the 12. Im not sure what you are looking at, maybe "load" instead of "dry weight"?
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Punkid8888
Posted on Friday, August 04, 2006 - 11:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
Dry Weight
12R = 395
9R = 385

I think you are confusing the load capacity, which is
12r = 388
9r =398

meaning that because the 2 bikes have the same GVW (bike weight and load capacity) the 12r can carry less weight because it by itself weighs 10lbs more the 9r
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Sokota
Posted on Friday, August 04, 2006 - 11:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
Me thinks the 12 crank assy is heavier than the nines , not the total 10 lbs but some of it.

(Message edited by sokota on August 04, 2006)
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Pwnzor
Posted on Friday, August 04, 2006 - 11:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
Me thinks the 12 crank assy is heavier than the nines.

What about the cylinder bore? Doesn't that affect weight in the other direction? Please correct me if I'm wrong.

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Kootenay
Posted on Friday, August 04, 2006 - 11:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
Cylinder bore is identical in both engines--the 12 just has a longer stroke.
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Pwnzor
Posted on Friday, August 04, 2006 - 11:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
ohhhh thats RIGHT, thanks!

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Spectrum
Posted on Friday, August 04, 2006 - 12:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
Yep, was looking and load capacity instead of dry weight. Still though what makes the 12 that much heaver?
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Luckydevil
Posted on Friday, August 04, 2006 - 02:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
it's all that "COOL" they pack in, heck theres a whole four more. haha
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Diablobrian
Posted on Friday, August 04, 2006 - 07:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
Exhaust valve, servo, and probably crank are what i can think of off the top of my head
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Lenb
Posted on Friday, August 04, 2006 - 08:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)
There is a 1.5kg (3.3lb) difference in the mufflers.
ie.
XB12 Stock pipe 8.5kg
XB9 stock pipe 7.0kg
(Race kit pipe 5.5kg)

The rest of the weight difference must be in the crank assembly (the servo motor weighs next to nothing).
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