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Simple, effective, cool, first tater gun!!

Built a combustion 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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Unread postAuthor: DYI » Fri Jul 27, 2007 1:14 pm

It's a pneumatic of course, that's why it is in the "Combustion Cannon Showcase". :roll:
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Unread postAuthor: dauphinoise potato » Fri Jul 27, 2007 1:52 pm

It's a combudtion the ball valve at the back is for putting fuel in and getting the smoke 'n' stuff out of the chamber
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Unread postAuthor: paaiyan » Fri Jul 27, 2007 1:55 pm

Well it's obviously a combustion. Pneumatic guns have no need for a BBQ sparker.
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Unread postAuthor: Alabaster » Fri Jul 27, 2007 1:57 pm

ok ok i was confused obout ball valve i thought maybe he made a 2in 1 some how
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Unread postAuthor: Alabaster » Fri Jul 27, 2007 2:13 pm

is it possible to build a 2 in 1
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Unread postAuthor: paaiyan » Fri Jul 27, 2007 2:23 pm

You could, yes. It would be possible to have a pneumatic with a modded valve, then a bypass around that with a ball valve that you could open for combustion use. It wouldn't be pretty, but it would work.
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Unread postAuthor: rednecktatertosser » Fri Jul 27, 2007 2:26 pm

Or you coule use a triggered burst disk cannon as a pneumatic or combustion. If you set up the unions right you could just take out the middle section when your ready to use it as a combustion.
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Unread postAuthor: paaiyan » Fri Jul 27, 2007 2:29 pm

Yea, but you'd have to have two different types of burst disks I would think. Combustions usually operate at lower pressures than Peumatics, so you'd want a weaker disk for the combustion. Or you could trigger the combustion, then open a sprinkler alve, though I'm not entirely convinced that would work.
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Unread postAuthor: Alabaster » Fri Jul 27, 2007 2:34 pm

technicly you wouldnt need a burst disck at all right
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Unread postAuthor: paaiyan » Fri Jul 27, 2007 2:41 pm

WEll no, but a burst disk ensures that the pressure is as high as possible before ejecting the projectile.

I like that, ejecting the projectile. LAWL! I make myself laugh...
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Unread postAuthor: dauphinoise potato » Fri Jul 27, 2007 4:42 pm

OOoh i forgot to say nice gun.
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Unread postAuthor: Intel Xeon » Fri Jul 27, 2007 5:32 pm

If you had coaxial cannon with a threaded assembly for the valve, you could simply stick in a ignitor, then remove the diaphragm/piston and just unscrew the pilot end to fuel. Or, if you have a ball valve, you could fuel without ever unscrewing it, no? Then the problem is the chamber to barrel ratios. a 2:1 combustion would be an inefficient piece of garbage, and a 0.8:1 pneumatic would be quite loud at 100 psi. Although if you were going to have a combustion anyways, noise would not be a problem. :confused2:

Interesting design there! Nice gun.
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Unread postAuthor: frankrede » Fri Jul 27, 2007 6:26 pm

Its called a hybrid at a 1x mix.
Thats a pneumatic that doubles as a combustion.
No need to disassemble or nothing.
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Unread postAuthor: Peter Cottontail » Fri Aug 03, 2007 12:39 pm

Whoa, thats awesome, could you post your plans for that? Ive been trying to figure out how i should build my second combustion cannon(my first is just a simple 4in chamber, 2in barrel bazzoka, but its kinda big and hard to bring places.) And how much did it cost you?
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Unread postAuthor: kostaki sk8a » Mon Aug 06, 2007 1:55 pm

thats a nice gun better than my first attempt but i need suggestions on how to make better guns like what to use as fuel and how to get it to fire without several clicks of my ignitor
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