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  1. #1
    Single Speeder
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    Single Speed Crankset Size?

    Hi all,

    I'm building up a Single Speed Surly XS 1x1 for my daughter, and have been shopping for a SS crankset.

    I run 180mm crank arms on my bike, but I'm 6'1".

    What size crank arms are some of you single speedin' girls running? I've been shopping for 170mm cranks, but wanted a little feedback before I pulled the trigger.

    I imagine she'll be about 5'4" ish when she's fully grown (that's a WAG, as she's only 4'5" at the moment...she's only 8...and I already know...this bike will probably be a paper weight for a bit ).
    "There's little traffic on the extra mile".

  2. #2
    Team Chilidog!
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    Quote Originally Posted by Your Bike Sucks View Post
    Hi all,

    I'm building up a Single Speed Surly XS 1x1 for my daughter, and have been shopping for a SS crankset.

    I run 180mm crank arms on my bike, but I'm 6'1".

    What size crank arms are some of you single speedin' girls running? I've been shopping for 170mm cranks, but wanted a little feedback before I pulled the trigger.

    I imagine she'll be about 5'4" ish when she's fully grown (that's a WAG, as she's only 4'5" at the moment...she's only 8...and I already know...this bike will probably be a paper weight for a bit ).
    Great username

    If you want, I have a set of Raceface Atlas AM cranks that were modded to run with a single chainring.

    I'm 5'4" and run 175mm. I ran 170mm but that wasn't really the right size if you're somewhere in the median/average height.

    PM me if you're interested.
    MTB4Her.com: mountain bike site for women, by women

  3. #3
    mtbr member
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    I'm 5'3" and I run 175mm cranks as well. Mostly because they came on the bike and they seem to work ok. I run 170mm on my road bike, and used to use the same on my geared mtb, but I think the extra leverage of the longer cranks is handy on the ss.

  4. #4
    pewpewpew Moderator
    Reputation: Impy's Avatar
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    Another vote for 175. I found the extra leverage on a SS important when compared to 170s.
    Love, Impy

  5. #5
    Master of the Face Plant
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    I agree 175mm is your best bet. I find that I get alot more rock strikes on my SS because of the lower BB. 175 is a good balance between leverage and clearance. I modified a set of xtr m-960 cranks for my SS. 490 grams.
    http://www.nbbikes.com/
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  6. #6
    Single Speeder
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    Thanks for the replies...glad I didn't order a 160mm .

    Raceface 175's on the way .

    BTW, those are some pretty XTR's you got there .
    "There's little traffic on the extra mile".

  7. #7
    Des(s)ert Rat
    Reputation: screampint's Avatar
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    I'm 5'4" on a tall day and I use 170 cranks on the singlespeed.

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