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  1. #1
    Downhill Racer PhilThee's Avatar
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    Change 105 8spdCranks w/chainrings to 9spdUltegra FC6500 w/chanrings-Any chain issues

    Ok here's the deal.
    I have 105 8spd cranks---#1056 Double
    I am still using the 8spd HG-90 rear cassette out back with both the 8spd deraiileurs and an SRAM PC58 chain.

    Can I swap to Ultegra 9spd cranks(#FC 6500 Double) and chainrings without any chain tracking problems?

    I was told there may be a problem because the spacing between the chainrings is smaller on the 9spd and may cause a tracking issue there.

    The guys at the bike shops have told me there shouldn't be any problems, but I'm just not sure.

    I'd like more input on this. I also looked at Shimano's compatibility chart but couldn't find anything on it.
    To me that would suggest that they don't want you to do it.

    What's up???
    Last edited by PhilThee; 06-10-06 at 12:54 PM. Reason: incorrect wording in title
    "I didn't see him/her" is a confession, not an excuse.

  2. #2
    sch
    sch is offline
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    Sounds like a go to me. Should be no problem with the cranks. Chainwheels might have a slightly shorter life span but the difference will be subtle. Tracking difference will be in the mm neighborhood.
    Steve

  3. #3
    Downhill Racer PhilThee's Avatar
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    Ya know I could get some shim material and cut what I need???

    Wonder how much of a difference we are talking about, and which sprocket would need to be spaced???
    "I didn't see him/her" is a confession, not an excuse.

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