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Dura Ace BB question...(3 posts)

Dura Ace BB question...took
Jan 19, 2004 6:15 AM
I put together a bike for a friend over the weekend and installed a DA 7700 series bottom bracket. I told him to go w/ the ultegra cuz it's easier to install/maintain, but he insisted on DA so...anyhow, when i got done installing it, there was a little bit of extra threads showing on the non-drive side cup after i torqued down on the lockring. is this normal? the bb feels adjusted correctly as far as bearing play/soothness, but the exposed threads got me wondering if i messed something up on the install.
Perfectly fine....merckx56
Jan 19, 2004 6:50 AM
I've installed some D/A bb-s that have had some threads showing and some that haven't. BB shells are supposed to be a uniform width but in my experience, they can vary a few mils from one to the other. If he insists on D/A, get him a D/A track bb.
re: Dura Ace BB question...should be "No" playWiseGuy
Jan 19, 2004 8:38 AM
If this is your 1st time setting up the 7700BB you may want to go to the Park Tool site for assistance ( They have an excellent procedure that will ensure you have zero play as needed. I have used this method many times over the years when I do maintenance on my D/A bottom brackets. I have had great results using this method...very little wear with smooth, free spinning.

It's a little slow going the first few times thru, but worth it in the end.