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Thread: Farkin Crank Not True

  1. #1
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    Farkin Crank Not True

    Ive got a single cylinder 250cc 2 stroke crank here we just installed a new con rod pin and bearing and its out by .011 of an inch rotated from the con rod pin.I have a 20 ton jack press at my dissposal,Any Ideas?

    Cheers

  2. #2
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    5th January 2007 - 14:58
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    Slug the offending side with a nylon hammer, its how the bike shops do it.

  3. #3
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    Sounds rough but if pros do it......,ill give it a try. Tommorow anyway too late in the day to be slugin it out in the workshop...

  4. #4
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    That's not out of a 1991 XR250R is it?

  5. #5
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    No, 2 stroke KTM 250SX. Selling the XR because I currently have 5 (running) bikes plus two bikes worth of parts ,piles of new 18 inch tyres (offWRFs)plus all my equipment and all my step dads other stuff cramed in there as well (horse float, 4 wheeler,list goes on..........)I can hardly move in the shed right now and need the space/money for a 05 RM250 that I might be buying soon, if I get the money in time that is...................

  6. #6
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    Quote Originally Posted by sidecar bob View Post
    Slug the offending side with a nylon hammer, its how the bike shops do it.
    +1... seems a bit agricultural, but that's what they do
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  7. #7
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    Just realized I dont have a nylon hamer just one of the tiny soft face ones......

  8. #8
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    Use a block of timber & a regular hammer then.

  9. #9
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    You probably haven't got a lead hammer either but they work well for this sort of thing.
    (If you know anyone who works in an oil refinery or fuel installation they will have one of these hammers, as they don't spark when hitting steel)
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  10. #10
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    Will It be ok if I just Hold one side of the crank by the web in a vice and just whack it or could that damadge the web.......

  11. #11
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    wrap a leather belt around the crank web and hit that with an ordinary engineers hammer.
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  12. #12
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    Green Bing to all who have replied

  13. #13
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    Awesome, Bikes been run in and goes sweet.
    Seems a shame to give it back though.......
    Time for a 2 stroke I think......

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