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Buell Forum » XBoard » Buell XBoard Archives » Archive through September 15, 2008 » Changing the primary sprocket « Previous Next »

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Werewulf
Posted on Wednesday, September 10, 2008 - 06:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

bought a xb9 sprocket to install my 08 xb12...sold the 08 before i installed it and now have an 06 ... the 06 sprocket attaches with a nut and the 08 uses a bolt... other than that, i cant see the difference in the actual sprocket...i want to put the 08 sprocket on the 06, but i see that asb says it wont fit..

the only difference i can see, is the 08 version comes with the rotor already installed on the sprocket... nallin racing said the sprockets are the same... anyone else know why it cant be done?
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Id073897
Posted on Wednesday, September 10, 2008 - 11:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

08 models got a new primary sprocket and a modified crankshaft also.

Regards,
Gunter
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Point_doc
Posted on Wednesday, September 10, 2008 - 03:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Get out your calipers...
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Werewulf
Posted on Wednesday, September 10, 2008 - 04:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

im thinking that the only difference is that the moco is selling the sprocket and rotor as a unit... i have heard several owners talk about how much trouble they had trying to press the rotor on the sprocket... but then if there is a fractional size difference, it would make a nasty exit, if the sprocket came loose at about 7k rpm..
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Point_doc
Posted on Wednesday, September 10, 2008 - 06:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Not sure how it will come loose...not only is it press-fit, there is eight bolts to hold it together.

Your HD shop should be able to press it on.
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Birdy
Posted on Wednesday, September 10, 2008 - 06:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Isn't the crank larger on the '08 than the earlier years? About a 1/4" or so? Could that be the problem?
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Werewulf
Posted on Wednesday, September 10, 2008 - 08:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

it doesnt need pressing, as the 08 comes already pressed together...the crank may be larger, but the splined area appears to be the same size...

it wouldnt come appart where it is screwed together, the problem would be in the fit of the splined area...

i guess i will trust in nallin racing, telling me that they are the same... i was just hoping to find someone who had done it already..

i will know first hand soon....
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