What size / type of nuts are used to fasten the gas tank to the bicycle?

Discussion in 'Motorized Bicycle General Discussion' started by michaelbikin, Jul 9, 2015.

  1. michaelbikin

    michaelbikin Member

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    For some reason, I did not receive the nuts for the gas tank in my kit, and I was wondering what type and size nuts I need to use to screw onto the gas tank stubs to mount it to the bike? I will be visiting the hardware store once I know this, or bring the tank to the store. I just joined this forum, and am looking forward to being part of this community and learning more about all of this.

    Thanks
     
  2. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    There are two styles of tanks.
    The larger 3/4 gallon uses 6 mm 1.0 nuts that are the same size as your motor mounting studs or sprocket nuts which is easy to check.

    The smaller 1/2 gallon tank uses 5 mm 1.0 nuts.
     
  3. michaelbikin

    michaelbikin Member

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    I have the 1.5 liter tank, what size does that use?
     
  4. crassius

    crassius Well-Known Member

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    the 1/2 gal tank is sometimes called a 2.5 liter - if it isn't one of these, send a pic

    also, they may have fallen out of bag & lodged under a bottom flap of box
     
  5. michaelbikin

    michaelbikin Member

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    Thanks for the advice, I'm gonna take a look, and upload a picture if necessary.
     
  6. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    Try one of the 6 mm nuts from motor mounting studs or sprocket nuts.

    If it is too big then your tank uses 5 mm 1.0 nuts.
     
  7. Davezilla

    Davezilla New Member

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    I'm thinking for the small tank it's the m4 x .7 nuts, I can double check the size when I get to the shop in the morning.
     
  8. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    The magneto bolts are 4 mm
    Tank studs are 5 mm double checked.
     
  9. Davezilla

    Davezilla New Member

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    Yup... just looked at mine... 5mm
     

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