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  1. #1
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    Crankset/chainring help

    I'm dusting off my 1997 Stumpjumper M2 Comp for the first time in years so I've been out of the biking loop. I noticed my middle chainring has a broken tooth along with a bunch of other worn down teeth, so I took the crank off, but now I'm stuck.

    The "star" is screwed on to the large and middle ring, and there's a single screw that I just can't get to because the arm is in the way. This is hard to explain and I should probably provide pics. This is what came with the bike.. it's a Sugino CSSIII

    Anyone have an idea how to get these chainrings off?

  2. #2
    cougarbait
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    you mean the middle and big rings are attached to the crank spider with four (five??) crank bolts and the crank arm is blocking access to one of the bolts??
    is the bolt directly beneath the arm??
    09AS-Rsl/09Six

  3. #3
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    yeah exactly (five)

    So the bolt is directly beneath the arm, but this particular bolt's opening is reversed so you could unscrew it... BUT, this bolt along with the rest have female part on the reverse side that you need to secure while unscrewing otherwise it just spins.. that's my problem, i can find anything that fits underneath the crank arm to hold this female piece.. i'm unscrewing it but it just spins to nowhere...

    worst design ever.

  4. #4
    cougarbait
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    have you tried using your finger??
    you can also try gluing something to it.
    09AS-Rsl/09Six

  5. #5
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    Cant fit my finger in there.

  6. #6
    cougarbait
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    glue a popsicle stick to it, then after you remove the bolt you can use a solvent to remove the glue.
    09AS-Rsl/09Six

  7. #7
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    you need a chainring bolt tool

  8. #8
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    chainring bolt tool, I see that's exactly what I need, awesome. thanks.

    Next question: What's a suitable replacement for a Sugino CSP3 32R chainring?

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