Cycling Equipment · Public discussion

Stripped crank arm

Started by Steve · · Last activity · 4 posts · 477 views

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Cycling Equipment
Published
19 May 2004
Last activity
21 May 2004
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Steve
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  1. Swapping out old-for-new rings last night, thought I had the Park crank
    extractor threaded on correctly to a vintage Suntour XC-Pro crank, felt the
    extractor "slip" while attempting to remove the crank.

    Bottom line is the crank threads are shot and while the crank isn't coming
    off right away, the bad news is the Park tool isn't getting the crank off
    right away either.

    So what's the accepted method for removing the crank ?. LBS "special tool",
    Sawzall the spindle ?.

    Any (useful) thoughts appreciated.

    Steve B.

  2. For removal of a stripped arm, one fairly simply and effective method
    is to loosen the crank bolt one or two turns and to ride the bike.
    The pressure from the bolt holds the arm secure. The stress of riding
    without pressure tends to loosen the arm, either square type or spline
    type. Do not remove the bolt entirely, as the arm may come off during
    a power stroke.

    Regarding the tool mentioned by Pete Grey, that is a Bicycle Research
    tool, the TC-10.

  3. Thanks to all,

    I had forgotten the excellent Park Tools website that offered the same
    advice,

    SB

    "Calvin Jones" <[email hidden]> wrote in message ...

    Quoted message said:

    For removal of a stripped arm, one fairly simply and effective method
    is to loosen the crank bolt one or two turns and to ride the bike.
    The pressure from the bolt holds the arm secure. The stress of riding
    without pressure tends to loosen the arm, either square type or spline
    type. Do not remove the bolt entirely, as the arm may come off during
    a power stroke.

    Regarding the tool mentioned by Pete Grey, that is a Bicycle Research
    tool, the TC-10.

  4. I looked up the tool, it's a BR-TC8.

    Also, on biketoolsetc (shameless plug for guys with GREAT selection of
    tools/small parts), I did some quick browsing, and there are a number of
    pullers available that don't require threads at all.
    Most look like they'd be easier on the crank than the fork model, some such
    that I bet you could continue to use this crank indefinitely...

    -pete

    "Pete Grey" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    If you have *any* threads at all left, there's a pretty good solution.
    Your LBS will have a little tool, that has pilot that threads into the BB
    threads themselvles. Then, there's a piced that guides down into the
    threads, over the pilot, and allows you to easily remove the crank.
    With this tool, it's shocking how little threds you need to pull the


    crank.

    Quoted message said:

    I got mine long ago, I think it's a QBP part, but I'm not sure. It's


    saved

    Quoted message said:

    me several times, great investment, and I've seen them on the wall at most
    LBS'.

    -pete

    "Steve" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    Swapping out old-for-new rings last night, thought I had the Park crank
    extractor threaded on correctly to a vintage Suntour XC-Pro crank, felt


    the

    Quoted message said:

    extractor "slip" while attempting to remove the crank.

    Bottom line is the crank threads are shot and while the crank isn't


    coming

    Quoted message said:
    Quoted message said:

    off right away, the bad news is the Park tool isn't getting the crank


    off

    Quoted message said:
    Quoted message said:

    right away either.

    So what's the accepted method for removing the crank ?. LBS "special


    tool",

    Quoted message said:

    Sawzall the spindle ?.

    Any (useful) thoughts appreciated.

    Steve B.

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