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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 09-12-05, 03:46 PM   #1
Groundhog1248
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Swapping Crankset for different size

What do I need to adjustment if I'm going from a 53/39 to 50/34 crank? I figure I'll need to move the front derailluer down but is there anyting else I need to worry about?
Thanks
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Old 09-12-05, 04:41 PM   #2
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Shorten the chain...
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Old 09-12-05, 06:36 PM   #3
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That's the beauty of a compact crankset. If you do it right the crankset is the only thing that you have to buy.

I replaced an Ultegra crankset on my Klein with an FSA Energy crank. I bought the Energy crank for an Octolink bottom bracket spindle so I didn't have to replace that. I lowered the front derailleur, resized the chain and reprogrammed my Flight Deck computer. The whole process only took me around an hour.
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