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Dura-ace BB versus Ultegra(4 posts)

Dura-ace BB versus UltegraHugh
Mar 8, 2001 8:02 AM
I'm already having problems with my DA BB. After 2 light rides in the rain it is already pooling water, and the damn thing won't stop creaking after being totally greased twice. I was told by a mechanic that most teams just use the Ultegra which are better sealed and easier to deal with. Do y'all concur?
Truegrz mnky
Mar 8, 2001 8:53 AM
What you are experiencing is typical and it's true that the Ultegra unit is more robust. The rub is that it's about a one ounce heavier that the DA unit, but also cheaper.
Ultegra BBNEIL
Mar 8, 2001 10:28 AM
Yes, he's right. This time the weight savings are not worth the trouble. Based on the comments here on this board, I went with the Ultegra BB instead of the DA and it went in easily, and I haven't touched it since, and it's as smooth as the day I got it. I don't care to return to the old days when you had check all your bearings after a rain ride and re-grease several times a season to unsure no dirt and grime got into the bearings.

NEIL
Dura-Ace installation instructions12x23
Mar 11, 2001 5:07 PM
I've been batting about .750 with the D/A. My problem has been limited to a snapping, popping sort of sound that you could actually feel when torqueing and sometimes spinning. I've also had this problem with one professionally installed D/A bottom bracket. I just replaced another one today after an overhaul didn't quiet it. The bearings and spindle looked good but cleaning and regreasing were of no help. I left the new one a little looser than I have in the past (in the past following Shimano's instructions), but still not enough to detect any play with the crankarms in place. It feels really smooth, and after one ride, no problems. However, past experience tells me 43 miles is too early to be optimistic. Maybe the bikeshop wrench and I were each at fault with the two failed units by adjusting the bearings too tight.