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  1. #1
    Senior Member
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    Shimano drivetrain...can I use these parts together?

    Trying to cobble together a cheap build using mostly parts I have lying around. I have the following:

    Ultegra 6600 shifters
    Ultegra 6600 f + r derailleurs
    Ultegra 6600 10-speed chain
    Ultegra 6600 10-speed cassette
    Dura-Ace 7800 bottom bracket

    Can use any of the following crankset?

    Shimano FC-3403 Sora Crankset (9-speed)
    Shimano FC-4650 Tiagra Crankset (10-speed, I think)
    Shimano FC-4550 Tiagra crankset (9-speed, I think)
    Shimano FC-R600 crankset

    Thanks for your help!
    Last edited by teamtrinity; 08-19-12 at 08:00 AM.

  2. #2
    Senior Member Retro Grouch's Avatar
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    Feb 2004
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    St Peters, Missouri
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    Whenever I already own parts I'll test fit them on a bike and see if I can make them work together to my satisfaction. If I'm buying parts, I'll always hold out for ones that match.

    In your case, I'd definitely use the Tiagra 10-speed crankset.

  3. #3
    Senior Member
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    Your 7800-series bottom bracket is an external bearing type that should be compatible with any Shimano crank with a built in spindle in the drive side arm. Any of the cranks you lists will work but the 10-speed cranks will be a bit better with the 10-speed chain.

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