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Installing Dura Ace BB(7 posts)

Installing Dura Ace BBride24-7
Dec 20, 2001 7:25 AM
I was just curious everyones thoughts on installing a Dura Ace bottom bracket. First off, if im riding an Alloy frame and the cups of the bb are Alloy too, should I put some sort of Anti Seize compound on the threads? Also, should I completely repack the BB with new grease instead of the shimano grease it comes with before install? Thanks for your help.
re: Installing Dura Ace BBgrzy
Dec 20, 2001 10:03 AM
You can use and anti-sieze compound, but most people find that quality grease is all that's required on the threads.

Why on earth would you remove the Shimano grease and replace it with something else? Do you have any idea of what you're saying or the amount of time required to do this? What is wrong with Shimano grease that we don't know about. You will get lots of rebuild practice in the future - it's kind of like mowing the lawn, fun the first time and after that it's a chore. Until you become skilled it will take about 2 hours.

Frankly you're being pretty anal about something that is fairly straight forward - install the BB and go ride. You do have a torque wrench don't you? It's the one thing that ensures the BB will stay put. You can do it without, but most people don't get it tight enough - a few over tighten.
How tight should a bottom bracket be?James
Dec 20, 2001 10:22 AM
Just wondering
Dec 20, 2001 10:39 AM
A bottom bracket fixed cup should be 50-70Nm, the adjustable cup lockring should also be 50-70Nm. 70Nm is pretty tight.
Just be for realBernie
Dec 20, 2001 10:35 AM
A Dura ace bottom bracket is adjustable. Even if it's adjusted properly, it may need to be re adjusted after a period of riding. That should not be a big deal. And finally, you're a bit naive for believing this anti shimano propaganda,(their grease being bad). Yeah man, their grease is real bad.. Ha ha ha...
Just be for realBernie
Dec 25, 2001 7:06 AM
If you are riding on a dura ace bottom bracket and you cannot keep it adjusted properly, maybe you should not be riding on it. You should be using a sealed 105 or ultegra bottom bracket. When you purchase dura ace, you are purchasing a light weight bottom bracket, which needs a bit of maintenance (awareness). You did not purchase a throw on and forget about bottom bracket. Finally, don't expect your dura ace bottom bracket to last forever either.
An experience with Dura Ace BB....Geof
Dec 21, 2001 9:15 PM
The Dura Ace bottom bracket kind of sucks for everyday riding and training. It's marginal on a race steed. It's tempermental, needs to be spot-on adjustment wise, and needs to be maintained quite often (repacked). Especially in the winter (if you ride and it gets wet...) It's very light, but that's about it's only really good quality. I personally went with the Ultegra 'install and forget' bb with my Dura Ace cranks. It's a sealed cartridge, and a tad heavier but it beats pulling your BB every three months. I got tired of messing with my Dura Ace adjustment. And I use a torque wrench. (agreed, must have)

My $0.02