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New Pneumantic 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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New Pneumantic cannon

Unread postAuthor: brplatz » Fri May 23, 2008 7:20 pm

this cannon i built today with an gatorade bottle, spare modded sprinkler valve, and an old barrel. it works extremly well but ive only brought it to 50psi for safety.

fun little plinker, i believe thats the term :D

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Unread postAuthor: jrrdw » Fri May 23, 2008 7:24 pm

How in the world did you get that bottel to stay on there?
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Unread postAuthor: XxtriviumxX » Fri May 23, 2008 7:28 pm

Looks fun... :D You could safely take it higher than 50 psi... I dont know how much higher exactly, but ive heared of bottles make it to 200psi without exploding or cracking. But im sure 80-100psi should be safe. :)
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Unread postAuthor: jook13 » Fri May 23, 2008 7:37 pm

xxtriviumxx... That bottle is a gatorade bottle. Since gatorade isnt carbonated, the bottles are probably not able to hold the kind of pressures as say a coke bottle.... I have one made from a coke bottle and I regularly take it to 120 psi with no problems


Still, this looks like a fun little plinker.

and as jrrdw asked, how is that bottle attached.
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Unread postAuthor: jrrdw » Fri May 23, 2008 7:38 pm

Soda bottels that are made for pressure. I've read of 100psi, but have no experience with them.

Edit: You guys type to fast! :P
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Unread postAuthor: Maniac » Fri May 23, 2008 7:40 pm

It looks like the bottle was slipped over a coupler ans epoxied? Yea does look fun. what is the barrel made of poly?
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Unread postAuthor: Darkside 6ix » Fri May 23, 2008 8:45 pm

Wow that looks like a 5-Minuite-Build-Cannon. But hey...Those are always the funnest, right?
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Unread postAuthor: homedepotpro » Fri May 23, 2008 10:13 pm

dude trash the gatorade bottle. there are not tough at all. I've seen tons fail. They dont even compare to normal soda bottles. they have a huge seam in them and they will probably burst the second you go over 50psi, if not sooner. Just trying to tell you from experience.

edit: its really only a few dollars and a few minutes to replace it. why not when your safety is at risk. just my two cents
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Last edited by homedepotpro on Fri May 23, 2008 10:34 pm, edited 1 time in total.
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Unread postAuthor: brplatz » Fri May 23, 2008 10:26 pm

ok sorry for the wait but i had to go see the new Indiana Jones movie :D

yes the bottle its epoxied to an old 1" SCH80 nipple i had laying around.

I'm not sure about the pressure it can take but i probably will exchange it soon.

i believe the barrel is sch80 1/2" but not completely sure
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Unread postAuthor: Darkside 6ix » Fri May 23, 2008 10:38 pm

Yeah, I had a similar cannon that had a Fanta bottle as the chamber... If you are willing to search it up on SpudFiles, be my guest. The name is "Fanta Cannon". It's very similar to yours and, like i said, uses a carbonated bottle.
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Unread postAuthor: brplatz » Fri May 23, 2008 11:06 pm

ill have to check it out. i think i might use an old 2 liter bottle for the chamber since i don't buy many small bottles of coke anymore.
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Unread postAuthor: psycix » Sat May 24, 2008 8:20 am

jrrdw wrote:How in the world did you get that bottel to stay on there?
jrrdw wrote:Soda bottels that are made for pressure. I've read of 100psi, but have no experience with them.

Dude! Its a bottle, not a bottel. :P
As a mod you should give the right example to people eh? :wink:


Nice gun brplatz, after upgrading that ghetto chamber it will be an even nicer little plinker.
Maybe just use a pressure rated pvc chamber? More power, and is a whole lot safer.
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Unread postAuthor: M.J.P. » Sat May 24, 2008 8:39 am

brplatz wrote:ill have to check it out. i think i might use an old 2 liter bottle for the chamber since i don't buy many small bottles of coke anymore.


i recommend 1 litre or 1.5. they are safer than 2L

edit: also is that a 3/4" barrel? what do you shoot? marbles?
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Unread postAuthor: Darkside 6ix » Sat May 24, 2008 10:52 am

From my experiences, 1/2 is used for marbles. 3/4 is a tad bit too big.
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Unread postAuthor: brplatz » Sat May 24, 2008 11:07 am

i am planning a very large cannon setup thingy i will probably be done with in about 3 weeks. that is why I'm not spending money on this one.

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when i pump it to about 65-70 psi it starts to bulge out right around the middle. possible its the seam homedepotpro was talking about. i will try a soda bottle once i acquire one.

as for the barrel it is 1/2 but the walls are much thicker than normal SCH40 pipe. i usually shoot wire nuts.
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