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  1. #1
    Senior Member highroller's Avatar
    Join Date
    Dec 2008
    Tour Down Under
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    Upgrade Dahon 7 speed to 9 speed?

    I just got a new wheelset and am considering upgrading my Dahon Eco to a 9 speed rather than fit my 7 speed cassette. Besides a cassette and shifters what else do I need to get?
    The Eco has a Tourney rear derailleur, would I need to change it?
    Does the chain need to be changed to a thinner 9 speed one?
    Do I need to change the crank/chainwheel?


  2. #2
    jur is offline
    Senior Member
    Join Date
    May 2005
    11 Post(s)
    0 Thread(s)
    What wheelset? This could be important in determining if a 9sp would even fit.

    To convert from 7sp to 9sp, you would need

    * Different hub (7sp freehubs are no good for 8/9sp cassettes)
    * 9sp chain (10sp also works well)
    * 9sp shifter

    The derailer will work. The Tourney is rock bottom entry-level, so getting a few levels higher will be well worth it. (If you were in Australia, I have a spare Alivio.)
    Cranks and chainwheel will be fine.
    My folding bike photo essays

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