my first combustion cannon. scrap pipe

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.
asianinvasion07
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Sat Dec 22, 2007 5:00 pm

i finished my gun today! :D


im getting about 50 yards on half of a potato slightly smaller than a baking potato

this was from shooting at a 45 degree angle

ill post pics of it later! :)
carter
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Sat Dec 22, 2007 5:11 pm

cool. got any pics.
At my lemonade stand I used to give the first glass away free and charge five dollars for the second glass. The refill contained the antidote
asianinvasion07
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Wed Jan 09, 2008 6:37 pm

yea. sorry i didnt get pics before. i had lots of schoolwork....


so yea here it is. and BAADLY corroded from tresemme hair spray haha


Image

Image

Image
Novacastrian
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Sat Jan 12, 2008 12:16 am

Well it looks as though you have been having a little tooo much fun judging by the looks of things!
Get rid of the hairspray spudder, upgrade to axe or something, that white residue is just not cool! :jerk:
America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
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bigbob12345
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Sat Jan 12, 2008 12:47 am

With axe you will also see a noticable power increase.
asianinvasion07
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Sat Jan 12, 2008 1:00 am

isnt axe expensive though?
Novacastrian
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Sat Jan 12, 2008 1:03 am

asianinvasion07 wrote:isnt axe expensive though?
Yes it is, a better option is to buy a large veteranarian syringe and a can of Butane. Hey presto metered fuel. :)
America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
asianinvasion07
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Sat Jan 12, 2008 1:51 am

how about "dust off" keyboard duster ?

so it doesnt corrode or get my electrical contacts wet.

its flammable though. i dont know what its made of

but when you burn it its really bad. its like acidic fumes..
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SpudUke5
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Sat Jan 12, 2008 1:52 am

Novacastrian wrote::jerk:
I havent seen a smiley like that ever, and i dont know if i want to see that again. I didnt think something like that would exists but i guess im wrong.

But im not surpirsed. Nowadays there is a smiley for just about everything :roll:
4SPC, My 4" piston 3" porting cannon
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invalid-username
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Fri Jan 25, 2008 4:57 am

i tried to make a tennis ball launcer wit the barrel and combustion chamber like that but it did not work. for ignition buy a piezo ignitor just conect it to the screws in your barrel with wire. i can uy a bbq lighter on my own no probs and im 14.
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