Removing damaged driveside crank

M4rKy
M4rKy Posts: 16
edited October 2007 in MTB workshop & tech
I recently went to remove my cranks and had no trouble removing the left crank. I started to remove the right crank with the crank extractor when all the threads in the crank ,that hold the crank extractor in place, sheered off. I did not cross thread them or anything like that. I know cant remove the crank and has anyone got any tips without having to destructivly remove with a hacksaw
My ride > http://www.pinkbike.com/photo/1598495/

Going up is always worth the coming back down

Comments

  • nicklouse
    nicklouse Posts: 50,673
    what is the crank/bb interface?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • M4rKy
    M4rKy Posts: 16
    there NC17 ISIS MTB pro bottom bracket and the cranks are NC17 freeride pro ISIS crankset
    My ride > http://www.pinkbike.com/photo/1598495/

    Going up is always worth the coming back down
  • lachoman
    lachoman Posts: 371
    i don't know if it is possible to get any purchase on the BB cartridge but if so then you could unscrew it with the drive side crank still attatched then press out the BB from the crank on a press.
    <hr noshade size="1">You bend it, you mend it.
  • lordhelmet
    lordhelmet Posts: 60
    its fitted with an interference fit, of how much i'm not sure, could try giving it a lick of heat with a blow torch, or oxy-acetylene gear with a gas welding nozzle on
  • M4rKy
    M4rKy Posts: 16
    thanks lordhelmet i tried just that and they popped straight off.
    My ride > http://www.pinkbike.com/photo/1598495/

    Going up is always worth the coming back down
  • lordhelmet
    lordhelmet Posts: 60
    glad to be of assistance
  • lordhelmet
    lordhelmet Posts: 60
    if you have any trouble fitting the new one, put it in the freezer for a few hours

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