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First Cannon

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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First Cannon

Unread postAuthor: AlbinoSpud » Mon Jan 07, 2008 7:25 pm

This is my first cannon, yeah.... it's bad, but at least it works :wink: and I made homemade ballistics gel which was fun :D
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DSC00123.JPG
The bullet in the gel, can't see much though, the gel turned out a little foamy...
DSC00124.JPG
the gun >.>
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Unread postAuthor: DYI » Mon Jan 07, 2008 7:27 pm

You need to use steam in that thing... It could be done with no modifications, and could give it decent power if you added a longer barrel.
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Unread postAuthor: AlbinoSpud » Mon Jan 07, 2008 7:30 pm

i might, i have those heat gloves for moving those fire logs, so maybe, but won't it rust?
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Unread postAuthor: DYI » Mon Jan 07, 2008 7:48 pm

If you use galvanised it won't rust. I've only used steam guns up to 160 psi, due to my lack of any good sealing face materials for high temp, but steam is usually similar to hydrogen in performance for a given pressure, sometimes moreso.

Whatever you do, don't expect any wonderful performance out of a gun this size without light gases and thousands of psi.
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Unread postAuthor: AlbinoSpud » Mon Jan 07, 2008 7:50 pm

yea its for me to shoot at my room so i really don't want it going through my wall :P
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Unread postAuthor: blind909 » Mon Jan 07, 2008 8:17 pm

i like small, compact guns like this. 2 thumbs up, what pressure do u opreate it at?
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Unread postAuthor: AlbinoSpud » Mon Jan 07, 2008 8:29 pm

100, 200 psi. i can go higher but my arms hurt after 250 :? :D
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Unread postAuthor: Carlman » Mon Jan 07, 2008 9:18 pm

so you shoot 250psi in your room?! lol, what do you shoot?

anyway nice gun, thats like exactly what my first gun would of been like but i chose to make an 8' GB gun instead lol :D
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Unread postAuthor: AlbinoSpud » Mon Jan 07, 2008 9:54 pm

i shoot darts at my homemade ballistics gel which is in front of wood so i'm safe unless i pump it to 400 psi which is my pump limit :D :D :D

I used the one on the right
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[youtube]http://www.youtube.com/watch?v=znmg2XK46Qw[/youtube]
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Unread postAuthor: Isomer » Mon Jan 07, 2008 10:39 pm

thats some impressive power-especially with a ball valve gun
how close is that ballistics gel to the original?
If it's close, you're putting out some real force there!
grats on first cannon
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Unread postAuthor: AlbinoSpud » Tue Jan 08, 2008 7:14 am

its pretty close, like i can jump on it, but idk how to tell how close it is so i'm just guessing :P
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Unread postAuthor: jackssmirkingrevenge » Tue Jan 08, 2008 7:22 am

Nice an simple, a much longer barrel will produce more impressive results though, especially at those pressures.
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Unread postAuthor: AlbinoSpud » Tue Jan 08, 2008 7:24 am

I would but i'm out of money, so next time i get my money, i will
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Unread postAuthor: bigbob12345 » Tue Jan 08, 2008 9:49 am

Very nicely done for a first cannon.
My first was similar to that it was just configured in a different way.
And where did you get a pump that goes to 400 psi?
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Unread postAuthor: Hotwired » Tue Jan 08, 2008 10:14 am

Shock pumps do that easily. Get one with a gauge.
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