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Rear belt pulley sprocket

Discussion in 'Motorcycle Tech Talk' started by charlieharley0057, Sep 12, 2007.

  1. charlieharley0057

    charlieharley0057 New Member

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    Hi
    Rear belt pulley sprocket
    I know the results of the five studs shearing and the pulley spinning on the axel at 85 mph whilest passing an 16 wheeler (God knows I was lucky) What I would like to know is what has caused this too happen. All five studs sheared inside the thread about a 5-7mm.
    I am running a Fat Boy solid rear wheel on my Heritage and have done so for the last four years.
    Any ideas might be helpful.
    charlieharley0057, Sep 12, 2007
    #1
  3. voodoochild

    voodoochild New Member

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    How hard are you on the throttle? I can't imagine hole shots being the reason for the bolts shearing off like that, that's alot of force. Glad you're Ok though!

    I was thinking repeated twisting of that pulley and wheel could weaken those bolts and eventually cause a failure but damn, I would think it would take a long time for that to happen. I can't think of anything else.
    Last edited: Sep 13, 2007
    voodoochild, Sep 13, 2007
    #2
  4. maxpower_hd

    maxpower_hd Active Member

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    I have a 99 Fatboy with an oversized tire on a stock wheel. I have done my share of hole shots and have yet to see any bolts sheer after 31,000 miles. I would have to think you got some soft bolts somehow.
    maxpower_hd, Sep 13, 2007
    #3
  5. chucktx

    chucktx Moderator Staff Member

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    i am inclined to believe that the bolts loosened up a bit, and over time....sheared. checking the tightness of bolts,nuts, ect it all part of maint. and it is kinda fun, while sipping an adult beverage, listening to the tunes!!!!:)
    chucktx, Sep 13, 2007
    #4
  6. ReeseSS

    ReeseSS New Member

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    Either extremely over torqued like with a air impact, or bolts were loose.
    ReeseSS, Sep 13, 2007
    #5
  7. hotroadking

    hotroadking Super Moderator Staff Member

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    I'd have to side with Chuck, probably one got a bit loose, and over time helped loosen the others with the forces from riding and hole shots.

    I've seen it happen on a stock fatboy, got lucky it didn't lock up the rear wheel while he was on the mountains in NC>
    hotroadking, Sep 13, 2007
    #6
  8. charlieharley0057

    charlieharley0057 New Member

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    Thanks

    Hi All
    Thanks for the replys. This happened last Wed :mad: - rebuilt backend Thurs :) been rallying / parting over the weekend.:drunk:
    Could someone please let me know what you mean by hole shot?:confused:
    Thanks again
    charlieharley0057, Sep 16, 2007
    #7
  9. voodoochild

    voodoochild New Member

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    That would be revving the motor to about 4000rpm and then letting the clutch out, then trying to keep the front wheel on the ground! :D I'm sure you call it something different across the pond, but it's all the same result. :D
    voodoochild, Sep 17, 2007
    #8
  10. charlieharley0057

    charlieharley0057 New Member

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    :cool: Hi V
    I Should have known. No not my style mate. I have taught my good lady and both my sons too ride and have always preached "Show offs fall off;) " So it must be down to just dam bad luck on the chrome bolts. Back to standard bolts from here on :chopper:
    charlieharley0057, Sep 17, 2007
    #9
  11. wvak47

    wvak47 Active Member

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    :roflmao: I will definately have to remember that one. Sorry for your troubles, and hope you get it all worked out. If nothing else you learned this simple Hillbilly some things. First Don't Show Off if you don't want to Fall Off, and second skip the chrome bolts on important parts. Appreciate ya for that.
    wvak47, Sep 17, 2007
    #10

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