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Ghetto Water 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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Ghetto Water Cannon

Unread postAuthor: jssizzle » Sat Apr 28, 2007 9:32 am

One of those lovely cannons that you throw together in 15 min. because you already have all the parts.

The design:

1/4" NPT to some small hose (I'm forgetting the size right now) for a nozzle.
1/4" NPT Ball valve for the trigger
1/4" NPT to 3/8" hose
A length of 3/8" hose
1/4" NPT to 3/8" hose
Seltzer water bottle with whole drilled in bottom
Hole drilled in cap with schrader valve
All duct taped to an old hockey stick

I know the design could be much more efficient, but I just threw this thing together and don't really care about performance much.

Possible improvements:

A soccer ball pump duct taped to the stick for pumping on the go.
Multiple tanks or just a larger one.
Making it out of PVC!

I'll get a video up eventually . . . I'm just estimating its range to be maybe 30 feet . . . but the tank only lasts about 10 seconds.

Image

The whole gun.

Image

The nozzle setup.

Image

The tank setup.

Image

View down the "barrel".






NEW:

Added a bike pump:

Image

And a video:

Image[/img]
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Last edited by jssizzle on Sat Apr 28, 2007 3:09 pm, edited 1 time in total.
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Unread postAuthor: spudthug » Sat Apr 28, 2007 9:42 am

hehe looks kinda like a more ghetto version of my water gun...u shoulda made it out of a fire extingushisher
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: super spuder » Sat Apr 28, 2007 9:42 am

:lol: that thig is funny.you have too much time on ur hands :roll:
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Unread postAuthor: jssizzle » Sat Apr 28, 2007 9:44 am

super spuder wrote:you have too much time on ur hands :roll:


Well thats what procrastination does!

I'm just trying to convince myself that there is no paper for english.
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Unread postAuthor: super spuder » Sat Apr 28, 2007 9:52 am

:lol: i know how that feels. i am supose to be writing something for english right now. but i am not am i 8)
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Unread postAuthor: Specialist » Sat Apr 28, 2007 9:54 am

that is pretty ghetto. get some vids soon. it looks like it would kinda hurt if you think about it. thats cool though.
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Unread postAuthor: jssizzle » Sat Apr 28, 2007 3:09 pm

Added video and new pic.
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Unread postAuthor: goathunter » Sat Apr 28, 2007 3:23 pm

I built a paintgrenade filler like that out of some 3" and pipe reducers(3"to2")
and cleanouts.At 50 psi the best water gun I've ever seen :wink: The homemade ones always bet the junk out of super soakers.
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Unread postAuthor: Flying_Salt » Sat Apr 28, 2007 3:53 pm

Darn. Looks like I might have competition if we ever have a ghetto contest. Just wait till I post my paper mache cannon in a few minutes.

Nice water gun, I'd make one if I had the hose.
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sgort87 wrote:I hereby present Flying_Salt with The one and only <a href="http://www.geocities.com/sgort87/ghetto">Ghetto Award!</a>
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Unread postAuthor: frankrede » Sat Apr 28, 2007 7:42 pm

nasty!
hope you have a crazy summer with that
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Current project: Afghanistan deployment
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Unread postAuthor: Panzerfaust » Mon Apr 30, 2007 6:01 pm

Making something out of darn near nothing.... always nice to see. I made a water gun out of a fire extinguisher, back straps remote valve trigger (bicycle handbrake) and a hand held nozzle. Looks like the proton pack from ghostbusters. it was pretty expensive but works very well, im afraid to shoot any one with it at 100 psi. Maybe i should post it....
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Unread postAuthor: iknowmy3tables » Mon Apr 30, 2007 6:05 pm

I like the use of broken hockey sticks
:wav:
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Unread postAuthor: paaiyan » Mon Apr 30, 2007 6:24 pm

Video not working!!! Poopie. Looks nice though. What's the range like?
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Unread postAuthor: jssizzle » Tue May 01, 2007 4:16 pm

I just put on a 2 liter soda bottle . . . very fun!
I don't think I'll post pics . . its not that hard to imagine.

paaiyan, try right clicking and hitting "open link in new window"

I think the range is like 30 or so feet.
Better than any of my store bought super soakers!

I think I should upgrade to a fire extinguisher . . but I haven't been able to find and recently that aren't ABC powder (which is bad!) or that have treads for the nozzle so that I could refill it. Eventually . . .
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Unread postAuthor: Panzerfaust » Thu May 03, 2007 6:25 pm

Look on ebay for water based fire extinguishers. They are usually 2.5 gallon ish and are filled with schrader valves. very simple to use, and VERY powerfull. The one i got had standard 1/4" threads at the nozzle, so it is easy to modify. Only reason to modify it though is that it is very heavy with 2.5 gallons of water, thats why i made mine into a back pack.
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