Threadless bottom brackets

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ChrisButch
Posts: 770
Joined: 24 Feb 2009, 12:10pm

Threadless bottom brackets

Postby ChrisButch » 13 Jul 2010, 3:07pm

I'm thinking of fitting one of these to a frame with stripped BB threads. There seem to be two brands available - Acor and Prestine. Anybody have any experience of either of these? Do they last? Do they need frequent retightening? Do they run true to the frame and chainline? Any feedback welcome.

james01
Posts: 1987
Joined: 6 Aug 2007, 4:48am

Re: Threadless bottom brackets

Postby james01 » 15 Jul 2010, 9:27am

Try searching the forum, there's been some discussion over the years. If I remember correctly, people have had mixed results when using threadless bbs.

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willcee
Posts: 509
Joined: 14 Aug 2008, 11:30pm
Location: castleroe,co.derryUlster

Re: Threadless bottom brackets

Postby willcee » 30 Jul 2010, 1:18pm

YST would imo be the more popular one available in the usual widths 110mm, 115mm etc. i think Stronglight do a expensive one which has adjustable chainline £50plus.... the thing to do with these when fitting is to have two good fitting tools on the bracket [with a strong friend] and get it tight... i mean really tight first time.. will

gbnz
Posts: 982
Joined: 13 Sep 2008, 10:38am

Re: Threadless bottom brackets

Postby gbnz » 30 Jul 2010, 9:41pm

If it's £50 plus, I'd have it rethreaded. £80 at argos racing cycles, when my bike was done. Or simply spend 2-3 minutes removing/filing the thread from a standard bottom bracket cartridge, prior to "glueing" the cartridge in with expoxy resin.

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willcee
Posts: 509
Joined: 14 Aug 2008, 11:30pm
Location: castleroe,co.derryUlster

Re: Threadless bottom brackets

Postby willcee » 30 Jul 2010, 11:39pm

YST are in region of 15 /18 pounds, and they have the life expectancy of any sealed bracket imo.. sure, do a frame repaint after the framebuilder has sorted.. either with a new shell OR their usual split the shell and brase up and rethread if it has been a quality frame and worth all that palaver.. will


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