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PostPosted: Fri May 06, 2011 8:45 pm 
MacRetro rider
MacRetro rider
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Joined: Tue Jan 18, 2011 10:40 pm
Posts: 20
Location: North Queensferry, Fife
Does anybody know what size of bottom bracket should be used when fitting a white industries crank from a 1996 Marin Indian fire trail to a Cannondale 1992 delta V 900. The Delta V has currently got a 68mm x 123mm fitted. I cannot set up the front mech as it does not reach the top chainring. Any help would be great.

Thanks

Mariner trev


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PostPosted: Fri May 06, 2011 10:02 pm 
Retro Guru
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Joined: Tue Sep 21, 2010 8:08 pm
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Location: East Lothian
How much clearance have you got between the chainrings and the chainstays?


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PostPosted: Fri May 06, 2011 10:15 pm 
Classified Mod
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Joined: Wed Dec 30, 2009 8:34 pm
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Location: Fife in Scotland
Trev what side did you feed the B/B in from?


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PostPosted: Fri May 06, 2011 10:37 pm 
MacModerator
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Location: Sol Kitts
Trev measure from the centre of the seat tube to the middle ring, this should be around 48-50mm. If its not(which it sounds like it isn't) subtract double the difference from the required bottom bracket. Soo lets say its 56mm, you need a bottom bracket with a 12mm shorter axle.


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PostPosted: Sat May 07, 2011 10:33 am 
MacRetro rider
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Joined: Tue Jan 18, 2011 10:40 pm
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Location: North Queensferry, Fife
Bullpup - between the large chainring and chainstay i've got about 19.5mm.

Robmac - Fed the bottom bracket in from the chainset side.

Kaiser - I measure 55mm from the centre of the seat tube to the middle chain ring. So working on your method I need a bottom bracket with a 10mm shorter axle length.

I've seen this bottom bracket on SJS cycles http://www.sjscycles.co.uk/shimano-un54 ... prod12986/

What do you guys think. I was going to go for the 113mm axle length.


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PostPosted: Sat May 07, 2011 10:49 am 
MacRetro rider
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Joined: Sat Jan 05, 2008 11:58 pm
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Location: Third stone from the sun.
Have the same cranks on my Zaskar, using a 113mm axle but would probably get away with a 110mm.

Generaly axles over 120mm are used with non LP (low profile) cranks, being 92 your Dale would have had non LP's originaly.


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PostPosted: Sat May 07, 2011 11:23 am 
MacModerator
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Location: Sol Kitts
Can't go wrong with a UN54. Not particularly light but good value and will last.


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PostPosted: Mon May 09, 2011 10:53 am 
Classified Mod
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RobMac wrote:
Trev what side did you feed the B/B in from?


Ignore that dumb ass question I just remembered :oops:


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