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  1. #1
    Senior Member Groundhog1248's Avatar
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    Sep 2005
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    Fuji SL1, GT Team Carbon, Mrazek BOH FX Mountain bike and Giant TCR1
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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

  2. #2
    Senior Member DannoXYZ's Avatar
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    Jul 2005
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    Shorten the chain...

  3. #3
    Senior Member Retro Grouch's Avatar
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    Feb 2004
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    St Peters, Missouri
    My Bikes
    Rans Enduro Sport, Hase Kettweisel Tandem, Merin Bear Valley beater bike
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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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