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First Cannon

Posted: Mon Jan 07, 2008 7:25 pm
by AlbinoSpud
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

Posted: Mon Jan 07, 2008 7:27 pm
by DYI
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.

Posted: Mon Jan 07, 2008 7:30 pm
by AlbinoSpud
i might, i have those heat gloves for moving those fire logs, so maybe, but won't it rust?

Posted: Mon Jan 07, 2008 7:48 pm
by DYI
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.

Posted: Mon Jan 07, 2008 7:50 pm
by AlbinoSpud
yea its for me to shoot at my room so i really don't want it going through my wall :P

Posted: Mon Jan 07, 2008 8:17 pm
by blind909
i like small, compact guns like this. 2 thumbs up, what pressure do u opreate it at?

Posted: Mon Jan 07, 2008 8:29 pm
by AlbinoSpud
100, 200 psi. i can go higher but my arms hurt after 250 :? :D

Posted: Mon Jan 07, 2008 9:18 pm
by Carlman
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

Posted: Mon Jan 07, 2008 9:54 pm
by AlbinoSpud
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
Image

[youtube][/youtube]

Posted: Mon Jan 07, 2008 10:39 pm
by Isomer
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

Posted: Tue Jan 08, 2008 7:14 am
by AlbinoSpud
its pretty close, like i can jump on it, but idk how to tell how close it is so i'm just guessing :P

Posted: Tue Jan 08, 2008 7:22 am
by jackssmirkingrevenge
Nice an simple, a much longer barrel will produce more impressive results though, especially at those pressures.

Posted: Tue Jan 08, 2008 7:24 am
by AlbinoSpud
I would but i'm out of money, so next time i get my money, i will

Posted: Tue Jan 08, 2008 9:49 am
by bigbob12345
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?

Posted: Tue Jan 08, 2008 10:14 am
by Hotwired
Shock pumps do that easily. Get one with a gauge.