Skull and Bones cruiser with a radical frame failure.

Discussion in 'Motorized Bicycle General Discussion' started by MotorBicycleRacing, Nov 21, 2014.

  1. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    Skull and Bones cruiser with a radical frame failure.
    Luckily the rider was unhurt.

    Pic taken from Facebook. $290? bike so not a Walmart $100 bike.

    [​IMG]
     
  2. curtisfox

    curtisfox Well-Known Member

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    WOW! That's scary. I don't have a 2 stroke,but if i did i wouldn't use the clamps that come with the motor. Just seems to me they would put a lot of presure in one spot............Curt
     
  3. maniac57

    maniac57 Old, Fat, and still faster than you

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    They break where the plate hits the frame. Using cut sections of pipe to spread the loads will prevent this problem. See Norm Neal's VeniceMotorBikes clamp style mounts for the right way to do clamps.
    Cheaper than billet mounts and almost as strong, if not stronger!
     
  4. 2door

    2door Moderator
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    Looking at some other aspects of that bike I have some concern that it wasn't built with all the care that should go into one. It makes me curious about exactly how the front engine mount was installed and how the bike was ridden.

    Is the 'skull & bones a steel or aluminum bike?

    Tom
     
  5. BarelyAWake

    BarelyAWake New Member

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    No welding, although a coupla tacks are handy... jus' need to get your own clamp one size over & some pipe (any hardware store) that's "close enough" as you can bend to fit if needful;

    [​IMG] [​IMG]
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  6. Davezilla

    Davezilla New Member

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    Something like that was exactly what I was thinking too... some extra metal to spread the load and take the wear so the U bolt can't saw thru the frame would have prevented that... A 1" wide section of the right size pipe could be split and installed between the frame and the U bolt, or it could be brazed into place, then temp install the engine and tack the U bolt, remove the engine and braze the U bolt to lock it in place, this would eliminate the wear caused by the engine vibration as well as eliminate a lot of the vibes from transferring thru the frame and into the seat and grips...
     
  7. crassius

    crassius Well-Known Member

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    a bit of PVC in there stops that too
     
  8. Dan

    Dan Staff
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    Uber cool BA. TY. Solved a lil puzzle on a similar issue.
     
  9. maniac57

    maniac57 Old, Fat, and still faster than you

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    Exactly. Well done sir!
     
  10. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    It's a steel frame.

    [​IMG]
     

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