Viewing 10 posts - 1 through 10 (of 10 total)
  • Mechanical – removing gxp crankset
  • Premier Icon ajt123
    Free Member

    Hiya,

    Trying to remove an old X5 double crankset from my commuter.

    8mm, through the self extracting crankbolt, anti clockwise, right?

    Won’t budge.

    Trying hitting the Allen key with a rubber mallet, no effect.

    Don’t have very strong hands (carpal tunnel), any ideas?

    Cheers Alex

    Premier Icon Yak
    Full Member

    Yeah. Don’t hit it though. Put a longer bar over the allen key for leverage. It shouldn’t take too much force.

    Premier Icon singlespeedstu
    Full Member

    2′ long breaker bar and stand on it while also standing on the other pedal to stop rotation.

    It shouldn’t take too much force.

    😂

    Premier Icon Yak
    Full Member

    ^ It’s gxp, not dub!! Dub needs all that + a goat sacrifice. Gxp needs a firm tickle.

    Premier Icon singlespeedstu
    Full Member

    + a goat sacrifice.

    Will try that. Sounds less painfull than pedal pins to the shins.

    Premier Icon joebristol
    Full Member

    I’ve always found GXP and DUB take the same amount of effort to crack the bolt off.

    You need a bigger lever than an Allen key either way. I usually use a breaker bar style lever and most of the time it then doesn’t need hitting / standing on.

    Wouldn’t hurt to soak the bolt in plusgas / any other equivalent anti seize type spray for a few hours first.

    Premier Icon greyspoke
    Free Member

    Supporting the Allen key/ socket attachment where it comes out of the bolt (eg a car jack and a block of wood) helps prevent it coming out and mashing the bolt. Getting the frame standing vertical and the Allen key nicely supported is a faff, but means you can stand on your extensiom/ breaker bar with more confidence, indeed bounce up and down on if needed.

    Premier Icon dc1988
    Full Member

    Lefty loosey, as above a longer lever should do it as they’re on quite tight. Can you slide a pipe over your allen key if you don’t have a longer ratchet/breaker bar

    Premier Icon squealingbrakes
    Free Member

    As above, using a breaker bar makes a huge difference. To stop the crankset rotating, I sometimes take off the non-drive side pedal, and slot a 2ft length of 2″ plastic pipe over the crank. Works a treat.

    Premier Icon ajt123
    Free Member

    Thanks learned sages. I shall procure a breaker bar tomorrow.

    A whole new world

Viewing 10 posts - 1 through 10 (of 10 total)

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