[Yak] Bottom bracket looseness
Tom Revay
trevay at massbike.org
Wed Sep 29 15:16:26 CDT 2004
On 9/29/2004 at 10:49 AM Elmer Bricca wrote:
>I am not sure if you are having loose crank arms or bearings in the
>bottom bracket. most bottom brackets are sealed and cannot be serviced.
>If your problem is crank arms and the bottom bracket spindles are
>square be sure there is no grease on them before tightening. Do not
>over torque. Loose crank arms are not a good thing. The square taper
>and the crank arms get rounded and no longer can be tightened. If this
>is really a bering problem replace the bottom bracket with a sealed
>one. I don't think B F is using the old style bottom brackets. Since
>the bike is new I would call B F tech support for help. Hope this
>helps.
Apologies in advance for my newbie-ness ... and thanks for responding!
Since reading this article
http://www.parktool.com/repair_help/FAQcartdg.shtml
... I've come to believe what was wrong was that the bottom bracket cartridge bearing's removeable ring wasn't tight enough. This permitted the cartridge to rock back & forth.
I'm thinking that, since this isn't really a bearing adjustment (you're right, cartridge bearings aren't adjustable), there's no reason to have any looseness at all.
I will drop a line to BF's service department. Thank you all for your help.
Tom Revay
Dedham, Massachusetts
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