Cotter pin Press /tool needed

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  • Anybody know where I can get one /be willing to lend one?

  • Look Mum No Hands has one

  • These things are rare as hen's teeth and you don't need them. A well placed smack or two with a metal headed hammer by someone who knows what they're doing is all that's needed. A decent LBS should be able to do this for tiny money.

  • ^That.

  • I spent an hour with an hour with a rubber mallet +a the back of a spanner and no chance of it budging. Seems it's F'cked.

    It is more of a rebuild than a repair, and I am afraid the LBS will try to charge me allot as they will want to fix everything.

    LBS = BLB

  • rubber mallets are for bashing in tent pegs
    I suggest going at it with a full on set of metal hammers. are you trying to remove it to replace the crankset? if so hammer way. if not, probably best ignore me as it may damage it.....

  • If you have a vice then you already have a cotter press. Put a socket from your socket set over the (unthreaded) end of the cotter pin and put the whole shebang into your vice and tighten up, pushing the threaded part of the cotter pin through the crank and into the socket. You might need someone to help hold the frame. Presto, cotter pin presses out through the socket. If you've already mushroomed over the threaded end of the cotter by wailing on it with a hammer, you're fooked my friend.

  • Sounds like ^ could work...

    I don't have access to a proper vice, but thinking to try one of these clamps.
    http://images.productserve.com/preview/1563/117432045.jpg

    I don't want to change the cranks, if i can fix it. Despite being stuck in there, the pin is not griping and the crank arm is louse. If I can get it out I am hoping a new pin will fix it. Maybe the crank arm is rusted to sh't inside and I need to replace the whole crank set.

    Either way I need to get it off somehow.

  • I hammered some cotter pins and managed to fuck up the thread so if you're hammering, make sure you give it enough force to get it out in one. Otherwise get down to LMNH, they have a press and supplied and replaced a pin for me for under a fiver.

  • A G-clamp won't work, it'll twist around as you tighten it and slip off. I've also broken a vice handle trying to remove a cotter pin (it was quite a small vice with an extension tube over the handle though).

    The best way to DIY it is a big heavy claw hammer and an old seatpost supporting under it. The seatpost/tube is absolutely essential. A rubber mallet ain't gonna work at all!

    My latest cotter pin adventure - cotter pin on new bike had no nut on it but I chanced that it was safe to ride home. Stood up to get away from the lights, pin half fell out, cranks turned and it's now bent and mashed up. I'm gonna go at it with a drill tomorrow and see if I can remove enough metal (without hitting the crank or the axle!) to somehow get it out, otherwise I'll have to cut the crankset up with an angle grinder.... Riding a bike with the cranks at 90 degrees rather than 180 is quite difficult!

  • get down to LMNH

    Where's that?

  • http://www.lookmumnohands.com/

    Ah yes,,, Pass it on on daily commute, never taught to check it out.

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Cotter pin Press /tool needed

Posted by Avatar for sendtoseamus @sendtoseamus

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