RMS's Cannon

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.
UAE_gunner
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Wed Nov 09, 2005 1:34 am

lol. i live in the middle east as some of you no. my nieghbors dont care. and if they called the police they wouldnt come. IF they did come they would think it was cool.
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beebs111
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Wed Nov 09, 2005 6:25 am

my parents are friends with all the officers here but i think if 1 of my neighbors called theyed come and confiscate it... :evil: damn uptight people
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beebs111
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Tue Feb 07, 2006 9:20 pm

i love the quik connects for the propane ! top notch!
Hitler_the_spud
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Tue Feb 07, 2006 11:55 pm

this may sound stupid nut on that tank how is the pin in the propane tank pushed dpwn so the propane is relased to the first ball_valve.
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Andrew52
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Sun Apr 09, 2006 12:02 am

yes the cops will arrest you if you get caught but if you dont then go for it
pyrogeek
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Thu Jul 13, 2006 1:49 am

The really coarse steel wool works great for electrical ignitors. Its cheap, and easy to get. Although you can order NiChrome wire on the internet. But its damn expensive, like $10 for 100 feet, and that wire is freakin thin.

Anyway, heres a site that has very good directions for making electrical ignitors. I use steel wool, but make them like she makes the ones using copper.
http://www.rctparadox.net/spatulatzar/igniters/
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frankrede
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Sun Jul 23, 2006 8:30 pm

No.Va wrote:hmm, this bugs me, i see some people using ABS and some using PVC, im just starting out and I'm wodering which one is better or safer to use. can anyone give me some tips please? it would be greatly apreciated.
Me being an idiot,I was new to pneumatics and i used 2" abs and i got it up too 90 psi with no problems.
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SpudStuff
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Sun Jul 23, 2006 8:33 pm

yes you were being an idiot, but that dosn't answer the question. The answer is always use SCH 40 PVC on pnumatics. you CAN use ABS on combustions
Viper
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Sat Oct 07, 2006 12:27 pm

that looks and reminds me of a mortar just by the way it is set up on that hill.
spit_spud
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Wed Dec 20, 2006 12:10 pm

the last picture is it a pneumatic gun or just to add pressure? nice bazooka looks powerfull, try using eggs as ammo.... :P :P :P
pyrogeek
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Mon Aug 06, 2007 12:55 am

You can use steel wool instead of NiChrome wire if you don't feel like scrapping a hair dryer.
And don't go egging their house...smear dog poo on their door knobs.
I'm weird, I know it, you don't need to tell me.
pyrogeek
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Mon Aug 06, 2007 12:57 am

Hitler_the_spud wrote:this may sound stupid nut on that tank how is the pin in the propane tank pushed dpwn so the propane is relased to the first ball_valve.
The propane meter has a special fitting on it that has a pin to push the valve down to open it. I have used them before, they are way way better than Bernz-O-Matic torch heads.
I'm weird, I know it, you don't need to tell me.
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SnowFlox
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Tue Aug 07, 2007 10:07 am

Viper wrote:that looks and reminds me of a mortar just by the way it is set up on that hill.
same thought :D


Nice long cannon !! what do you mean about the back up flint sparker ?
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