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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Big Mechanicals: Head, Cyl, Piston, Rod, Crank, Flywheel, Cases, Bearings » Archive through September 02, 2007 » Late tube frame and XB crank differences? « Previous Next »

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Rick_a
Posted on Friday, January 12, 2007 - 02:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Sometime down the road (hopefully later than sooner) I'll be needing a crank on the 'ol S1 as she is on the loose side already. What's the difference between the press fit tube frame crank and XB12 cranks? I know the XB cranks are a bit lighter, but the tube frame cranks are much more expensive. Why? Are the timing marks and keyway slots different?
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Diablobrian
Posted on Friday, January 12, 2007 - 04:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
I know that with some mods an X1 crank can be fit to an XB9.

That is exactly what Terry G at Hal's did to my engine before the XB12 existed.

If you are really interested you should talk to him about it.
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Alex
Posted on Saturday, January 13, 2007 - 03:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
The major difference is the sprocket shaft design as the tubers use the Timken style bearing while the XBs use a single row roller bearing (so the sprocket shaft diameter and design is different). You can not install a XB crank into a tuber case without major modifications (machine work required).

Regards

Alex
M-TeK Engineering
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