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  1. #1
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    6-7 speed crank compatibility with a 10-speed build?

    I hope to use a pair of 6-7 speed vintage Sugino-manufactured cranks in a Campy 10-speed build with Ergo shifting. I intend to use modern, ramped and pinned 10-speed TA rings, compact, 50-34.

    Do I need to reduce the spacing between the rings? I'd very much like to accomplish transparent, factory-equivalent performance. Will a 10-speed chain drop between the rings if I don't reduce the spacing? If I do need to thin the spacers, what is my target spacing? Yes, I am doing this for a classic appearance. The cranks are Specialized "flag" style, and the build is a Della Santa.

    Thanks for any insight.

    ~pb

  2. #2
    Senior Member link0's Avatar
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    I have used a 7 speed crankset (Shimano 600 Tri-Color) on a 9 speed (Dura Ace 7700) drivetrain successfully. I'm not sure if the shifting is optimal though.

    I would go with a Dura Ace 7700 9-speed crankset if I were you, since you wanted to keep the classic look. It will work perfectly with a 10 speed drivetrain.

  3. #3
    coprolite fietsbob's Avatar
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    think you need new chainrings since the roller width and thus the inner link side plates are closer together .

    on 10 speed chains.

  4. #4
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    I like the simple approach, good thinking, but I don't see the 7700 being available in a 110 compact, only in a full-sized crank? (Plus, I have the arms, but that doesn't mean I absolutely have to use them.)

    Thx

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