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First recycled cannon (Tennis Ball Launcher)

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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First recycled cannon (Tennis Ball Launcher)

Unread postAuthor: dapaintballer331 » Mon Jan 21, 2008 9:13 pm

Parts:
1 2 Liter bottle
2 Pringles cans
Cotton balls
Packaging Tape

I drilled a hole in the bottom of the pringles can just big enough to get a 2 liter connector (without a cap) to fit. After it was in, I screwed the cap on from the inside of the can to secure it. After removing the bottom of another can, I packaging taped the entire contraption together.

Using a 3/8" drill bit, I put a hole just big enough to fit a BIC lighter inside. Works like a charm.

Tennis balls are a little small, so I wrap one in cotton balls, then packaging tape the cotton balls on so it fits snugly.

While fireing, it stays in the air for maybe 5 seconds. Could be better for sure, but at least it's loud :).

I used purple aquanet (sprayed into the lighter hole) as a propellant.

Pics:
(Ignore 3liter monster bottle & Candy :) )
Image
Image
Image
/\ How not to fire (lots of recoil)
Image
Image
/\ Ignition Pic

This is not my first cannon, I have a few Pneumatics, and PVC combustion guns I'll be posting over the next few days.
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Last edited by dapaintballer331 on Mon Jan 21, 2008 9:18 pm, edited 1 time in total.

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Unread postAuthor: LikimysCrotchus5 » Mon Jan 21, 2008 9:18 pm

Wow that is the most ghetto gun i think i have ever seen.

Thats a ticking time bomb in my perspective
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Unread postAuthor: dapaintballer331 » Mon Jan 21, 2008 9:19 pm

I have 3 similar guns that proved to be a bombs as well :) see the failure analysis thread. Two exploded immediatly, and the other took probably 20 shots (until hairspray chemicals worked the glue from the tape)
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Unread postAuthor: Maniac » Mon Jan 21, 2008 9:25 pm

Yes more feet and cell phone pics they just keep on coming.
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Unread postAuthor: Isomer » Mon Jan 21, 2008 9:26 pm

I like the ignition "system". I think thats the way that the original spudgun was fired. The packing tape makes it look shiny. :D :D :D
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Unread postAuthor: A a r o n » Mon Jan 21, 2008 9:38 pm

very ghetto. Is your name zach by any chance?
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Unread postAuthor: bmad6 » Mon Jan 21, 2008 11:51 pm

Not actually the first recycled cannon we've made. (I'm the guy in the pics)

I'm usually the one firing them until he's sure they're safe, so I've been the person firing when each of the guns fails. =D

In the failure analysis thread, he has posted pics of a gun where the back (which was a UTC pretzel container) shattered and blew out. It used duct tape, which worked a lot better than this one, because Giant was out of duct tape so we used some clear packing tape.

We also made two others which were just a metal barrel (legs of an old, broken pinball machine) taped to 2 liters bottles. One got soggy from the hair spray, so the tape lost grip and the 2 liter flew backwards when we fired it (luckily, I had the back end pointed over my shoulder) and with another the barrel was two 2 liters taped together and the tape failed and blew the back end off.

Also, another modification for the gun in the pics, we took plastic cups and cut the bottoms off so that the lids can be dropped down the barrel and are close to airtight. Then, we dropped tennis balls in on top of the cup bottoms and fired, which worked really well. We had to retrieve the cup bottoms each time, but they didn't go that far, and we can now use any tennis ball in the barrel.

--bmad6

PS - and no, neither of us is named zach
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Unread postAuthor: Novacastrian » Tue Jan 22, 2008 12:13 am

Very "interesting" indeed. :lol: Makes my "recycled" cannon look like a gold plated .44 Magnum!
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Unread postAuthor: psycix » Tue Jan 22, 2008 6:20 am

Haha nice cannon, I guess you built it since you had nothing better to do and some useful trash lying around?
I know those days... :)

But ive never build one with such a large bore!
You inspired me! I think I know something to do the next time im bored. :D
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Unread postAuthor: hi » Sat Feb 02, 2008 10:56 pm

i here by rank this cannon the best cannon on spudfiles. just as the titanic was unsinkable, this cannon is unbeatable...
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

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Unread postAuthor: thespeedycicada » Sun Feb 03, 2008 12:46 am

i smell a ghetto award....
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current projects: co-axial piston valve.Status DONE!
S.P.E.C.S update mk 1 construction begining in febuary all the maths for it are done plans are drawn up and parts are listed.
NEXT project:auto piston valve.
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