Stripped Screw Bolts, and a Solution...and then some...

Discussion in 'Motorized Bicycle General Discussion' started by Toadmund, May 17, 2013.

  1. Toadmund

    Toadmund New Member

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    Well, nobody seems to be around to help me out with this major engine destruction (pics) and the questions I have asked in THIS THREAD
    So I'll ask this question here.
    I am having screw bolt problems, they are tight and soft as lead almost and they are stripping badly (how did they get them in without a scratch?!?!) and have a philips slot.
    Want to replace those with allen bolts.

    Anyway, I am going to my brothers place tomorrow, he has a drill press, seems to me that it would be better to drill these things out than to go out and buy 'easy outs' or whatever they are called.
    I am expecting to have to tap them holes out to a larger size, should I go M10?

    Can I take the halves off with the small gear still on?
    If I strip my brothers gear puller as well, how else can I get the dang thing off, propane?
     
  2. maniac57

    maniac57 Old, Fat, and still faster than you

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  3. crassius

    crassius Well-Known Member

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    yep, never seen any kind of motorcycle that didn't need application of one of those from the 20s to modern times
     
  4. Toadmund

    Toadmund New Member

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    Tried my impact driver, had to stop was making too much noise (notice time above), didn't work, but probably because of bad angles, or surfaces, may give it another shot tomorrow.
    I took my vice grips, an impact philips bit in it and an adjustable to twist and got one loose, quite a snap when it let go.
    But man they are in there tight!
     
    #4 Toadmund, May 17, 2013
    Last edited: May 18, 2013
  5. Toadmund

    Toadmund New Member

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    OK, tried it again, turns out my technique was wrong. I was trying to let the tool do all the work, I found that I had to supply a bit of torque myself instead of just wacking it with a hammer.
    All but two came loose, and that's because there was simply nothing for the bit to grab on to.
    But the fortunate part is that the half where the screw bolts go in is not threaded, so I can drill off the bolt heads and I am home free!
    (except of course that small pinion gear)

    I got my impact driver from a Foley Belsaw small engine course I took about 23 years ago, first time I actually got use out of it, I greased it up with some lithium grease before I took on this task.

    Thanks Man!
     
  6. crassius

    crassius Well-Known Member

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    yep, without applying that torque with your hand, the tool-body will turn away from the screw rather than turn the screw - you can also fit a long extension to get more hammer room
     
  7. maniac57

    maniac57 Old, Fat, and still faster than you

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    Takes a while to get a feel for it. Be sure to use the best fitting bit available to keep from damaging the screw heads..
     

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