07-11-2004, 10:03 AM
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#10 (permalink)
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| | Re: Front shifter fails after replacing crankset
Daniel Kelly (AKA Jack) wrote:
>
> I've just upgraded my crankset and bottom bracket. And now I can't
change
> gears on the front derailleur. I've tried moving and adjusting the front
> derailleur.
[snip]
> 2) Before buying the BB and crankset, I read that the crankset needs the
> longest available BB axel, so I got 121mm BB.
Bingo, there's your problem!
> But perhaps this is a little
> too long, resulting in the front chainwheels being pushed too far
away from
> the frame?
Right.
> My new BB is the Shimano LX Splined ES51 and the Crankset is the LX
Splined
> 9sp M571 170mm 22.32.44
See: http://sheldonbrown.com/bbsize.html#deore
Your cranks _should_ have a 113 mm spindle, if the bike has a
normal-sized seat tube, 118 only if it has a fat seat tube. (Fat seat
tubes place the front derailer mechanism farther outboard.)
Sheldon "Chainline" Brown
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Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
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