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  1. #1
    Senior Member divineAndbright's Avatar
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    removing a 3 piece crank??

    Was wondering if anyone can help me.. how do I remove the sprocket side of a 3 piece crank set of this nature.. see the picture, thats all I can get off, I gather the other side is threaded too, as there is a piece that looks like you're supposed to thread off right behind the sprocket I think, its all round with a small flat area, but no wrench I have could ever fit in there, I guess you need a special tool?

    PS: that other piece behind the sprocket is just a chainguard holder, dont let that confuse you.

    PPS: I think these stupid threaded 3 piece cranks were invented to keep bike shops in business cause they cant be maintained with normal house hold tools and people like to complicate things!
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  2. #2
    118AHC "Thunderbirds" 2372ighost's Avatar
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    Looks like you have cottered cranks, you need to get the crank side off before proceeding.

  3. #3
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    Try these links for info

    Hopefully these will provide some direction. Is the sprocket side crank cottered also?
    If so , you will need to get that cotter out and then can remove the crank axle, then cups.

    http://sheldonbrown.com/cotters.html


    http://sheldonbrown.com/tooltips/bbcups.html

  4. #4
    Senior Member divineAndbright's Avatar
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    Ok so that did it, and duh that was easy, now I feel like a moron. I've just dealt with 3 piece cottered cranks that you didnt have to remove the drive side arm to remove it in the past, anyways cool, thanks heaps!

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