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AT-4

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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AT-4

Unread postAuthor: singularity » Sat Jul 21, 2007 11:50 pm

well this is my AT-4 styled coaxial piston cannon, its 3" in diameter with a 1" barrel, and piloted with a modded 1" sprinkler valve. its technically not done (need a shoulder rest, a sight, and a second fire control box) but you know close enough. its been in operational status for a few months now i just never got around to posting it. i can shoot a rock about a 1/2 mile and i can put a nail dart through 1/2 plywood with ease

<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2677.jpg">
the hole cannon

<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2679.jpg">
the valve assembly

<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2680.jpg">
the expertly crafted handle (jk just a piece of pipe and a tee i shaved down)

<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2681.jpg">
the back blast vent (ran out of spray paint)

INTERNALS

The Pisiton

<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2218.jpg">


<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2217.jpg">


<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2216-1.jpg">

The Barrel Spacer

<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2261-1.jpg">

<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2262.jpg">

<img src="http://i78.photobucket.com/albums/j85/irwinner_2006/DSCN2263-1.jpg">

sorry the rest of the internal pictures were deleted
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Last edited by singularity on Sun Jul 22, 2007 11:12 pm, edited 2 times in total.
be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: hi » Sat Jul 21, 2007 11:55 pm

wow, ive been gone way too long. that thing is awsome. i love it!
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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

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: spud yeti » Sun Jul 22, 2007 1:56 am

Woah, thats really awesome! The end pieces and colour make the cannon. How much does it weigh?
Great job singularity
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really good quote/phrase here
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Unread postAuthor: Pyro Ninja » Sun Jul 22, 2007 2:21 am

spud yeti wrote: The end pieces and colour make the cannon.


yeah the end pieces add some nice authentism to the whole gun....good job :)
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Unread postAuthor: f.c » Sun Jul 22, 2007 3:07 am

thats very nice. i like it alot. how high do you take it.
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Unread postAuthor: spud yeti » Sun Jul 22, 2007 6:37 am

how high do you take

I think he said 100-110 PSI somewhere, but I could be wrong :wink:
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really good quote/phrase here
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Unread postAuthor: potatoflinger » Sun Jul 22, 2007 8:31 am

That's a great looking gun, just don't go near any airports carrying that thing :lol:
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Unread postAuthor: singularity » Sun Jul 22, 2007 10:43 am

most of the time i charge it somewhere between 60 to 80 psi, but i have brought it up to 100 psi a few times. but whenever i charge it to 100 i cant hear anything for 2 minutes (which means i cant hear the neighbors rushing out of their house to see what that noise was) as for the weight i don't really know but i would guess in the 20 pounds range, i don't have one scale in my entire house to weigh it on and if i brought it to the post office i bet every one would run away screaming. thanks for all the positive feed back everyone, keep ypur eyes open for a remote detonated mine ill be posting soon
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: noob of noobs » Sun Jul 22, 2007 2:13 pm

1" nail darts? How big are the nails? Anyway, awesome gun! Looks like a real RPG! I wish I could make one of those.
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Unread postAuthor: singularity » Sun Jul 22, 2007 2:23 pm

i just take 3" nails and wrap them in a bunch of duct ape which leaves about 1" of the nail exposed. and it wasn't as hard to make as you would think, it was expensive but it was pretty simple. the hardest part was the barrel support
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: origin unknown » Sun Jul 22, 2007 3:53 pm

That is beautiful. Way to go!
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Unread postAuthor: e1337 » Sun Jul 22, 2007 7:05 pm

That is awsome.Please post internal pics.
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Unread postAuthor: VH_man » Sun Jul 22, 2007 7:14 pm

might i reccomend making PVC missles out of 1/2 inch pipe? surely you know how to do that........

and also, C batteries fit in 1 inch pipe. the kick might hurt a but tho..........
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Unread postAuthor: sjog » Sun Jul 22, 2007 8:14 pm

Hosta Leaf--my favorite color!
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Unread postAuthor: rednecktatertosser » Sun Jul 22, 2007 10:05 pm

Woah. that my friend is amazing. It looks very close to the real thing. Great job.
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