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And a full auto version

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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And a full auto version

Unread postAuthor: farcticox1 » Sun Mar 31, 2013 1:08 pm

This is what the full auto looked like when it was first assembled for testing. There is a small magnet on the bottom of the T fitting to keep the stack of balls in position ready, as the trigger is pulled the first ball leaves the stack and gravity drops the stack ready for the next shot, fully automatic, in theory.

Image

Here is the revised full auto, extra air line to the magazine tube keeps the ammo flowing better, it was stuttering as it was, 3 or 4 shots at a time.

Image

I need a bigger air flow now to keep up, so will get a bigger reservoir tank. Laser sight is a cheap pointer of ebay ($1.50)

So total cost of this build, $1.50 + $3.00 for 100 balls.

Estimated rate of fire is 3000 rounds per minute, mag tube holds 50(1/4" steel ball bearings), I will video a 10 shot burst and get the time frame off media player in slow mo.

And I have parts for another one, I am thinking a short barrel pistol, single shot with pump action reload.
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Last edited by farcticox1 on Sat Jun 08, 2013 12:52 pm, edited 1 time in total.

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Unread postAuthor: jackssmirkingrevenge » Sun Mar 31, 2013 5:02 pm

Nice, what pressure are you running at? The pressure washer valve can take a lot of pressure, you could happily hook up an unregulated paintball tank to it.
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Unread postAuthor: farcticox1 » Mon Apr 01, 2013 7:45 pm

I just have a 100psi portable compressor, what pressure can a paintball tank hold? I have a 12v 250psi compressor so I could pump one up. The pressure washer gun is rated at 300 so it would take it.
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Unread postAuthor: jackssmirkingrevenge » Mon Apr 01, 2013 11:27 pm

farcticox1 wrote:The pressure washer gun is rated at 300 so it would take it.


You mean 3000 ;)

A paintball gun typically holds 3000 or 4500 psi, with an output of 850 psi. You're not going to do anything with one of those little 12 volt pumps though, get yourself a fridge compressor!

http://www.spudfiles.com/forums/my-comp ... 11866.html
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Unread postAuthor: farcticox1 » Tue Apr 02, 2013 4:30 pm

Lol, yes I was wrong, I was reading off the beaten up gun. It is actually 5ooopsi :shock:
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Unread postAuthor: SamDol » Fri Apr 12, 2013 1:46 am

:shock: Woah!! This is my first time saw such buildable gun.. AWESOME!!! Teach me please!!
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Unread postAuthor: farcticox1 » Fri Apr 12, 2013 6:47 pm

Yes it works very well considering there are no moving parts, just a handfull of fittings screwed together.
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Unread postAuthor: sagthegreat » Sun Apr 14, 2013 9:43 am

Do you have any idea on velocity?

And its a simple detent right?
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Unread postAuthor: farcticox1 » Mon Apr 15, 2013 6:49 pm

I think I would need a proper meter to measure velocity, I tried to video it with my regular camera but it is just a blur.

The 'detent' for the balls is just a magnet, it's not in the first photo as I hadn't glued it on yet. this is how it works.

Image
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Unread postAuthor: farcticox1 » Mon Apr 15, 2013 7:23 pm

http://youtu.be/qq4NTw_fGdA

Here is the video for what its worth
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Unread postAuthor: sagthegreat » Mon Apr 15, 2013 8:54 pm

I think a rubber detent would be more effective
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Unread postAuthor: jackssmirkingrevenge » Tue Apr 16, 2013 12:18 am



A video of the target would have been more useful :)
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Last edited by jrrdw on Sun Oct 20, 2013 1:16 pm, edited 1 time in total.
Reason: Fixed video.
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Unread postAuthor: farcticox1 » Tue Apr 16, 2013 3:44 am

Yes, I will do another of the target
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Unread postAuthor: jackssmirkingrevenge » Tue Apr 16, 2013 7:04 am

Also, I note that your nickname is an anagram of "arctic fox" but gives the first impression of "farty cocks".
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Unread postAuthor: mako » Tue Apr 16, 2013 10:08 am

Hey, man, nice gun 8) . I did not, however, see any notes on the caliber?
Also, why did you decide to use the air flow to load the rounds? It seems like a spring would have been easier. Or maybe I've missed something?
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