My Big Bang pop guns

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
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BowerR64
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Mon Feb 24, 2014 3:43 am

I dont have any videos of mine but this is the carbide i use,

This one is in a gatorade bottle and it doesnt seem very dangerous? My air volume is about the same but my opening is smaller creating a higher velocity at the muzzle.

His design is simmilar but i believe he is using like 1-1/2" PVC his is a little larger then mine. He also uses way more carbide then i do. I use a pinch of carbide he uses about 4-5X the amount i do. We wait longer and ours isnt near the same volume of air. 1" tee is the volume of the chamber in ours.

Yellow arrow is pointing to the little scoop we use to dish out the carbide. Its a cut down .22LR shell you can almost count each grain that the scoop holds.
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jackssmirkingrevenge
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Tue Feb 25, 2014 10:37 am

As long as you keep the quantities tiny I doubt you'll be in any real danger.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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BowerR64
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Tue Feb 25, 2014 4:04 pm

Thats the beauty of this stuff is that you cant over do it. Did you see the class room example on the youtube videos?
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jackssmirkingrevenge
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Wed Feb 26, 2014 8:34 am

BowerR64 wrote:Did you see the class room example on the youtube videos?
Yes... must be awesome to have a professor who is a member of the Bloods!
hectmarr wrote:You have to make many weapons, because this field is long and short life
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