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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 (Parktool.com). 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.