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PostPosted: Thu Jun 07, 2012 10:42 pm 
Dirt Disciple

Joined: Sat May 19, 2012 10:02 pm
Posts: 28
Location: plymouth
Has anyone else used a Threadless BB with success?
Have just bought second hand and BB has loosened after about 40 miles.
It's threadless so I'm assuming that threads are stripped. Most other bolts etc weren't particularly tight so am hoping that as I've now thread-locked and tightened it, that it will stay tight.
Any advice welcome, particularly of the 'it will be fine' or 'inexpensive tips' type... :)


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PostPosted: Thu Jun 07, 2012 11:57 pm 
Old School Hero

Joined: Wed Aug 19, 2009 11:55 pm
Posts: 157
Location: Derby
I bought a frame with a Mavic threadless BB - refused to take it out as I'd suspect the threads are gone. It's been doing a great job for years.


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PostPosted: Fri Jun 08, 2012 12:32 am 
Dirt Disciple

Joined: Sat May 19, 2012 10:02 pm
Posts: 28
Location: plymouth
Thanks. Cheap acor BB installed in a Cougar/Dolan frame so will hopefully hold tight and when bearings give out I'll get a better quality one.
Ant


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PostPosted: Fri Jun 08, 2012 11:11 pm 
rBoTM Winner
rBoTM Winner
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Joined: Sat Apr 14, 2012 12:03 am
Posts: 400
Location: Newcastle upon Tyne
I had an old mercian with a stripped fixed cup thread. Dave Yates did a "cut and weld" on it. Essentially, the bottom of the shell is cut and welded back up which decreases the overall diameter. New threads can then be cut. I only lost an inch of paint under the shell which was sorted by Dave meaning no respray required. I was then able to fit a standard campag fixed cup.


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PostPosted: Sat Jun 09, 2012 9:33 pm 
Dirt Disciple

Joined: Sat May 19, 2012 10:02 pm
Posts: 28
Location: plymouth
Thanks. Worth considering if the Threadless BB does not hold but the work would probably cost more than I paid for the entire bike. The frame is heat-treated 7005 (Cougar-Terry Dolan I think, no decals) with a mix of shimano 105, 600, campag front mech and suntour chainset.
Rides really nicely, really responsive but harsh compared to my old steel MTB I now use for commuting.
Anyway, thanks both for your advice.


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