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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 01-17-06, 10:50 PM   #1
pharnabazos
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I did a search to try and find out what I need, but the discussion on derailleurs was way over my head. Can anyone tell me which kind I need for a Surly Cross Check with 52-42-30 ring and 12-27 cog? The previous derailleur was a Deore LX. Thanks in advance.

Last edited by pharnabazos; 01-17-06 at 10:51 PM. Reason: duplicate
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Old 01-17-06, 11:04 PM   #2
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You'd need a long cage rear der. Basically, a longer cage takes up more chain-slack to deal with the different amounts of excess chain when you have a wide range of gears. And your range is pretty wide. An LX derailler would have been a long cage. You can get a road long-cage (105 would be your best bet) or a mountain-group derailler such as LX.
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