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  1. #1
    Senior Member maidenfan's Avatar
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    Crank to chainring compatibility

    Im in the market for a new set of cranks for a single speed project. I've noticed all the 10spd cranks are on sale now and cheaper than the 9spd versions. Is it as simple as changing the rings to make them 9sp compatible? I understand the price of the rings makes this a non issue, but I'm just curious if thats the only difference or is there more to it?

    Thanks.
    "Others don't understand because I train every day of my life as they have never trained a day in theirs." Alexandr Karelin - the most dominating Greco-Roman wrestler - ever

  2. #2
    AEO
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    you can use 10sp rings on 9sp no problem.
    they'll work better to boot.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
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  3. #3
    coprolite fietsbob's Avatar
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    Im in the market for a new set of cranks for a single speed project.
    ?
    You need a crank with just one chainring then, and the chainring teeth
    minus any of the derailleur shifting features.. maybe even a thick chainring, for 1/8" chains.
    never/mind the 9and 10 speed stuff its not the right parts.

  4. #4
    Dough Mestique
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    I have run 9 speed, 10 seed, and purpose built single speed chainrings on my single speed. It doesn't matter on a single speed (unless you buy BMX parts which is a whole separate issue).

    You will, however, need single speed chainring bolts if you want to run a single chainring on a double crank. They are shallower. The standard chainring bolts you have will bottom out before they tighten up enough to ride.

    BL


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