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 Post subject: Bottom bracket thread
PostPosted: Thu Aug 16, 2012 10:56 pm 
Retro Guru

Joined: Mon Jun 04, 2012 10:02 am
Posts: 441
Location: Australia
Bit confused about bottom brackets.

The OEM BB was a XT BB-UN72 with 73mm width, overall 113mm, english thread, square taper

The BB tube measures 73 wide by ~35mm bore.

Some BB's for sale say 'size = 68 / 73'

Will they fit?


Last edited by Blackstar on Fri Aug 17, 2012 3:43 am, edited 2 times in total.

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 Post subject:
PostPosted: Thu Aug 16, 2012 11:09 pm 
MacRetro rider
MacRetro rider
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Joined: Sat May 22, 2010 7:25 pm
Posts: 4977
Location: Edinburgh
Yep.


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 Post subject:
PostPosted: Thu Aug 16, 2012 11:16 pm 
Gold Trader / rb Rider / Special
Gold Trader / rb Rider / Special
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Joined: Mon Aug 31, 2009 12:26 am
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Location: Rurally close.
73mm is the width of the shell, a 68 wont really work in a 73mm shell but 73 will work in a 68 (with spacers).
113 denotes axle length.


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 Post subject:
PostPosted: Fri Aug 17, 2012 2:01 am 
Retro Guru

Joined: Mon Jun 04, 2012 10:02 am
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Location: Australia
sorted :)


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