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UDTBC-10 (my new 3'' piston valve)

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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UDTBC-10 (my new 3'' piston valve)

Unread postAuthor: unisonmind » Thu Jan 31, 2008 6:09 pm

So i think this will be my last cannon i build before i buy a house because i just don't have room for anything bigger.

I have only done test fires inside because of the cold here in Colorado. so i cant really go over 50 psi with out making my ears ring. so i don't really know its true power!

In a few weeks when it gets hot out ill take it outside and blow some s*** up ( i have a old desk and TV waiting for it)

Tell me what you think!

specs:
-4''x2' chamber
-2.5''x4' barrel
-the piston is a pill bottle filled with
a lot of epoxy and a nurf ball as a bumper
-Piston valve is a 3'' tee with a 2.5''port
-pilot is a 1.5'' Pulse Valve and a 1/4''
ball valve to trigger it

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture157.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture157.jpg" border="0" alt="Photobucket"></a>

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture160.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture160.jpg" border="0" alt="Photobucket"></a>


<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture161.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture161.jpg" border="0" alt="Photobucket"></a>

back plug
<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture167.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture167.jpg" border="0" alt="Photobucket"></a>


<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture165.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture165.jpg" border="0" alt="Photobucket"></a>

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture171.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture171.jpg" border="0" alt="Photobucket"></a>

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture170.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture170.jpg" border="0" alt="Photobucket"></a>

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture169.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture169.jpg" border="0" alt="Photobucket"></a>

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture175.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture175.jpg" border="0" alt="Photobucket"></a>

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture176.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture176.jpg" border="0" alt="Photobucket"></a>

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=Picture177.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/Picture177.jpg" border="0" alt="Photobucket"></a>

<a href="http://s87.photobucket.com/albums/k154/unisonmind/?action=view&current=DSC00797.jpg" target="_blank"><img src="http://i87.photobucket.com/albums/k154/unisonmind/DSC00797.jpg" border="0" alt="Photobucket"></a>


[youtube]http://www.youtube.com/watch?v=xBMOHN6Tm0I[/youtube]
[youtube]http://www.youtube.com/watch?v=5OsIM47-Mag[/youtube]
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Last edited by unisonmind on Thu May 01, 2008 3:03 pm, edited 1 time in total.
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Unread postAuthor: origin unknown » Thu Jan 31, 2008 6:12 pm

Holy mother! That thing is huge! Very clean construction. Again, very awesome.
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Unread postAuthor: veginator » Thu Jan 31, 2008 6:18 pm

Me likey :D :D :D :D :D
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Unread postAuthor: bigbob12345 » Thu Jan 31, 2008 6:24 pm

Very good job with the piston valve
Very good construction you make the pvc look good
Once it warmer Id be keen for a video of this animal destroying something.
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Unread postAuthor: LikimysCrotchus5 » Thu Jan 31, 2008 6:27 pm

Very nice and this is another way for me to get more needed info.

I am building a large scale launcher myself as well, 3 inch barrel, 4 inch piston.

Now what is your bumper made of?

How did you hook up your pulse pilot valve? I see that you used a 1.5 inch threaded coupling of some sort to connect the pulse valve with the plug. Is there a hole drilled into the plug?

I cant think of any more questions but when i do i will post here.

Thanks in advance
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Unread postAuthor: elitesniper » Thu Jan 31, 2008 6:46 pm

beautiful job there man. it has to be loud :twisted: . whats the distance it can achieve with say 80psi?
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Unread postAuthor: unisonmind » Thu Jan 31, 2008 6:46 pm

LikimysCrotchus5 wrote:Very nice and this is another way for me to get more needed info.

I am building a large scale launcher myself as well, 3 inch barrel, 4 inch piston.

Now what is your bumper made of?

How did you hook up your pulse pilot valve? I see that you used a 1.5 inch threaded coupling of some sort to connect the pulse valve with the plug. Is there a hole drilled into the plug?

I cant think of any more questions but when i do i will post here.

Thanks in advance


1) My bumper is just a 4'' round nurf ball i cut up, and put a hole in it

2) i hooked up my pulse valve with a 1.5''x2'' long nipple hooked to a 1.5npt x 2''npt bushing hooked to my plug which is just a 2''npt x 3''npt bushing that i did so mod work on


elitesniper:: i have no clue on the distance because i cant go outside and i dont have GGDT....if some one can run in GGDT that would tell you and me the answer
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Unread postAuthor: pizlo » Thu Jan 31, 2008 6:56 pm

WOW, very nice, your gonna get a TON of power with that thing, what pressures could your compressor take it too?
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Unread postAuthor: BrianMigs » Thu Jan 31, 2008 7:03 pm

Congratulations on the gun mate! Awesome job, trust me, I wish I had a gun like that.

You did a great job putting it together, not messy at all.

Do you pilot the valve with the same ball valve that you use to fill? Still figuring this stuff out.

We want a video when it warms up in Colorado! LOL
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Unread postAuthor: MrCrowley » Thu Jan 31, 2008 7:26 pm

Wow very nice man, i've still got a 3" piston cannon that's unfinished in my garage and this has given me a few ideas.

You always make great looking and performing cannons, and this is no exception :)
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Unread postAuthor: Cosmic Muffin » Thu Jan 31, 2008 8:41 pm

sweet barrel support.. what is it :?: and the gun looks so clean, good job mate :P
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Unread postAuthor: unisonmind » Thu Jan 31, 2008 9:13 pm

pizlo:
WOW, very nice, your gonna get a TON of power with that thing, what pressures could your compressor take it too?


My compressor will take it to 200psi but i don't think ill ever go over 150psi

MrCrowley:
Wow very nice man, i've still got a 3" piston cannon that's unfinished in my garage and this has given me a few ideas.

You always make great looking and performing cannons, and this is no exception


thanks man coming from you that means a lot

Cosmic Muffin:
sweet barrel support.. what is it and the gun looks so clean, good job mate

its just some hose clamps, 2 bolts, a bolt sleeve and a hex coupling nut
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Unread postAuthor: J-MAN » Sat Feb 02, 2008 8:07 am

holy man that thing is massive, that must have some kick, i like :twisted: good job
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Unread postAuthor: schmanman » Sat Feb 02, 2008 9:32 am

nice!

very clean construction, I like the barrel support!
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Unread postAuthor: frogy » Sat Feb 02, 2008 10:06 am

This gun is beautiful in every aspect a spud gun can be beautiful in :P

I like how clean your tee looks and the barrel support looks great... The rubber definitely makes it look fancy 8)

Do you use clear primer?

I wish you would have messed something up, so I could say some stupid joke, like asking you if you took all those pills while you were building it... :lol:
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