New Dura Ace bottom brackets don't last

User avatar
Bentnose
Posts: 1080
Joined: Sun Jan 03, 2010 9:00 am
Location: N/E suburbs Melbourne, Victoria

New Dura Ace bottom brackets don't last

Postby Bentnose » Fri Nov 24, 2017 6:15 am

I was running my last Dura Ace external bottom bracket for 3 years before it gave up the ghost. It's replacement was the new smaller style ones and it has only lasted 11 months before sounding like a can of marbles. In fact it became so bad so fast I've stopped riding the bike with it in, I can usually put up with a wonky bottom bracket for a while before having to replace it.

Is anybody else having issues with these BB's or did I just get a dud? I've got a new Ultegra one but they are also of the smaller variety now as well, bit worried because I installed a small XTR one on the MTB as well.
No New Years resolution, I'm perfect already.

User avatar
Duck!
Expert
Posts: 6404
Joined: Tue May 21, 2013 8:21 pm
Location: On The Tools

Re: New Dura Ace bottom brackets don't last

Postby Duck! » Fri Nov 24, 2017 10:05 pm

My similar slim-line XTR has been in for around 18 months and is still running like new.
I had a thought, but it got run over as it crossed my mind.

User avatar
Bentnose
Posts: 1080
Joined: Sun Jan 03, 2010 9:00 am
Location: N/E suburbs Melbourne, Victoria

Re: New Dura Ace bottom brackets don't last

Postby Bentnose » Sat Nov 25, 2017 8:19 am

Hopefully just a rare dud one then.
No New Years resolution, I'm perfect already.

User avatar
Bentnose
Posts: 1080
Joined: Sun Jan 03, 2010 9:00 am
Location: N/E suburbs Melbourne, Victoria

Re: New Dura Ace bottom brackets don't last

Postby Bentnose » Sat Nov 25, 2017 6:15 pm

Interestingly, the Ultegra BB is a little bigger than the Dura Ace one, it uses a different adaptor plastic tool thingy, wonder if this means bigger bearings and better wear?
No New Years resolution, I'm perfect already.

User avatar
biker jk
Posts: 5911
Joined: Tue Nov 17, 2009 6:18 pm
Location: Sydney

Re: New Dura Ace bottom brackets don't last

Postby biker jk » Sat Nov 25, 2017 6:45 pm

Bentnose wrote:Interestingly, the Ultegra BB is a little bigger than the Dura Ace one, it uses a different adaptor plastic tool thingy, wonder if this means bigger bearings and better wear?


I have over 17,000km on an Ultegra 6800 bottom bracket and it's fine.

User avatar
Bentnose
Posts: 1080
Joined: Sun Jan 03, 2010 9:00 am
Location: N/E suburbs Melbourne, Victoria

Re: New Dura Ace bottom brackets don't last

Postby Bentnose » Sun Nov 26, 2017 10:21 am

Cool, I only got about 3000km out of my Dura Ace one.
No New Years resolution, I'm perfect already.

User avatar
tallywhacker
Posts: 1694
Joined: Thu Apr 12, 2007 3:21 pm
Location: Perth

Re: New Dura Ace bottom brackets don't last

Postby tallywhacker » Mon Nov 27, 2017 10:26 am

went through 2 in about 18 months. I think they are made out of cheese. Back to using a good old reliable square taper

User avatar
Bentnose
Posts: 1080
Joined: Sun Jan 03, 2010 9:00 am
Location: N/E suburbs Melbourne, Victoria

Re: New Dura Ace bottom brackets don't last

Postby Bentnose » Mon Nov 27, 2017 7:17 pm

I got a Wheels Manufacturing one for my new MTB, may have to move away from the Shimano ones if short lifespans keep occurring.
No New Years resolution, I'm perfect already.

Who is online

Users browsing this forum: Noviss