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 Post subject: BB (My Brain Hurts!!!)
PostPosted: Fri Sep 21, 2012 12:46 pm 
Gold Trader
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Joined: Thu Mar 19, 2009 12:08 pm
Posts: 1626
Location: Wales
Just upgraded my wifes old 21(7)spd MTB, to 27(9)speed.

The original BB was a 122mm axle. I've put an LX triple chainset on, with a 110mm UN73 BB.

Its just not right. The chainline is much further off board than it should be!!! If I revert to the 122mm axle, it will be even worse.

What am I doing wrong?


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 Post subject: .
PostPosted: Fri Sep 21, 2012 10:36 pm 
aka Leo Swayer
aka Leo Swayer
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Joined: Wed Jun 18, 2008 7:15 pm
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Location: Wales.UK
Has if got removable cups on both sides?
Have you em on the wrong way round?
Probably not but i thought i'd ask :wink:


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 Post subject:
PostPosted: Fri Sep 21, 2012 10:43 pm 
Section Moderator & South West AEC
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Joined: Mon Jun 25, 2007 3:33 pm
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Location: new forest
which model of lx is it?


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 Post subject:
PostPosted: Fri Sep 21, 2012 10:58 pm 
Gold Trader
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No removeable cups! And it's m570. Should be ok with a 110 to 113 axle but it just looks wrong?


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 Post subject:
PostPosted: Fri Sep 21, 2012 11:00 pm 
Section Moderator & South West AEC
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Joined: Mon Jun 25, 2007 3:33 pm
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Location: new forest
yeah, sounds like it should be ok with a 110/113, not something daft like a 73 mm shell in a 68 is it?


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 Post subject: ,
PostPosted: Fri Sep 21, 2012 11:18 pm 
Gold Trader
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I just don't know. I'll pull the bb back out to make sure, but it's bugging me.


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