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Old 01-17-12, 03:03 AM
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RJMurphy
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Join Date: Sep 2011
Location: Denver, Co.
Posts: 107

Bikes: 2012 BMC FS02, 2012 Aventon Mataro (Custom), 2014 Scattante XRL Team (Custom), 1999 GT GTB.

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73mm BB + Shamano 6500 = Impossible??

I ended up picking up some 6500's for when I get ready to update my Bridgestone (don't worry, it's nothing special). It's a cottered crank, so I want to move to something new. The 53-t gear is also pancaked against a guard and I can't seem to get it off. It causes chain derailing pretty easy also. Big problem is, I can't seem to find a 73mm Octalink BB in V1?? I referenced http://sheldonbrown.com/bbsize.html#ultegra and did not see a single thing indicating that it even exists. Anyone out there happen to have matter-of-fact knowledge about this??
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