were to find replacement headstuds

Discussion in 'Motorized Bicycle General Discussion' started by beentryin, Oct 11, 2010.

  1. beentryin

    beentryin New Member

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    i got a bgf motor in today tore it apart and,the head studs came out with the acorn nut.
    i then took of the nut and sure enough the top part of the head stud was stripped,i tryed lowes but they didnt have no thread all or studs that long were can i find studs or some thread-all?
     
  2. beentryin

    beentryin New Member

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  3. msrfan

    msrfan Well-Known Member

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    About the only way to get them quicker is to make them yourself. All my bgf motors had 8mm X 1.0 pitch on the lower end and 8mm X 1.25 on the top. If you have an industrial supply local, they may have the dies and bar stock. You can substitute 5/16" bar stock and use the metric dies on it. Good luck.
     
  4. stuffandstuff

    stuffandstuff New Member

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    one of my head bolts broke when i was torquing the motor at only 2 feet lbs.... had the same problem finding metric 6mm bolts. any luck finding these anywhere beside online??
     
  5. beentryin

    beentryin New Member

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    i would use long allen bolts or hex bolts if i could find them.but lowes dont have nothing that long
     
  6. msrfan

    msrfan Well-Known Member

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    You have to know what thread you're looking for. Mine were fine on the bottom and coarse on the top. You're probably going to have to order them. I just looked through the McMaster-Carr website and found nothing. They're odd sized and may not be available from regular sources. If you get desperate, you can helicoil the block to a common thread pitch and then use common studs or bolts.
     
  7. Mind_Reader7

    Mind_Reader7 New Member

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    48cc is 6mm, 66cc is 8mm.
     
  8. msrfan

    msrfan Well-Known Member

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    Thanks. Good info. I haven't purchased any 48cc motors.
     
  9. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    Some 66cc motors use 6 mm head studs
     

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