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Old 06-13-09 | 09:34 AM
  #17  
DaveSSS
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Joined: Sep 2008
Posts: 7,296
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From: Loveland, CO

Bikes: Cervelo Rouvida x 2

Originally Posted by Garthr
I think we're getting off track here. Ryanwood has stated he has a Shimano Cartidge BB. His frame does not need to be faced. Cartridge BB's are kind of idiot proof, as long as you have the proper threads, install it with the proper torque on the DS, moderate torque on the non-DS and you're good to go. The left side cup really does not need to be torqued as tight as the DS, not even close actually. I've experimented with both, and the left side cup doesn't move either way.

Using a cartridge BB does not eliminate the need for BB facing. A face that's very far off square can still cause the bearings to bind and the right side to loosen. Most frames these days are adequately machined at the factory, but the paint should still be removed from the right face of the shell.

You can check if facing if needed by screwing the right cup in until it contacts a .010 inch feeler gage and then use .008-.012 inch feelers to check for high or low spots. I consider this a must with outboard bearing cups. None of my three LOOK frames needed facing.
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