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my 1st Pneumatic!

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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How is it for a 1st pneumatic?

meh...
0
No votes
ok i guess
4
27%
schweet
6
40%
Pretty Impressive
5
33%
 
Total votes : 15
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my 1st Pneumatic!

Unread postAuthor: FishBoy » Sat Jul 05, 2008 11:07 am

Well, with 4 spray 'n prays under my belt i decided to make a pneumatic. I wanted something with the same size bore as my previous small gun (S&P), but with more power, so i decided on making a 1" psiton valve.

Specs
- 1" barrel sealing piston with 1/2" port
-Pilot- 1/2" ball valve
-Fill valve- Schreader valve
- 1/2" female threads for interchangeable barrels
- Barrels- 1/2", 3/4", and 1" burst-disk/confetti
-Operating pressure- 80-100 Psi
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Attachments
PVG1.jpg
Just some of the non fruit/veggy ammo i use
PVG2.jpg
you can see the hole where the battery went through the towel better in this pic
PVG3.jpg
I shot an AA battery at 95 psi and it went through both sides of a peanut-butter jar filled with water, and then went through the towel I was using as a backstop!!!
PVG4.jpg
I shot this dart through both sides of a peanut-butter jar filled with water, and it continued through the towel backstop and embedded itself into the brick wall behind the towel!!! Needless to say, it got pretty screwed up in the process.
PVG5.jpg
Looking down the barrel
PVG6.jpg
The gun with the 3/4" barrel (attached), the 1/2" barrel, and the burst-disk/confetti barrel
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Unread postAuthor: LikimysCrotchus5 » Sat Jul 05, 2008 11:11 am

Nice first piston, good job getting it to work.

And P.S. im sure you know but a towel really isnt a good backstop.
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4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
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Unread postAuthor: pizlo » Sat Jul 05, 2008 11:32 am

The gun is so so... compared tot he valve and the ammo! Making a piston valve on you're first try is really impressive, and your ammo is (like always ) great. Keep it up!
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Unread postAuthor: brogdenlaxmiddie » Sat Jul 05, 2008 11:34 am

I'm really impressed with your first gun being a piston valved one. Mostly, you hear about peoples' first using a BV or modded sprinkler. Good job on the gun and ammo!
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Unread postAuthor: FishBoy » Sat Jul 05, 2008 1:18 pm

LikimysCrotchus5 wrote:Nice first piston, good job getting it to work.

And P.S. im sure you know but a towel really isnt a good backstop.


i no, that was just to slow down the projectile before it hit the brick wall behind it :D
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Unread postAuthor: SEAKING9006 » Sat Jul 05, 2008 2:19 pm

Good job on the ammo and the piston, like the others said. I also like how I'm not the only one to figure out that heavy fabric doesn't quite stop a speeding projectile coming out of the barrel of one's first pneumatic. :lol: Man, that blanket got torn up. By the way, try using a bunch of those little mini-glow sticks that you clip onto each other. I shot a bunch of those out of the CA1 for the 4th. It was good fun.
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Completed projects:
CA1 SMSS Basic Inline
CA3 PDAB Airburst Cannon

Current Project: Bolt action rifle (25x140mm + 1in shot)

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Unread postAuthor: FishBoy » Sat Jul 05, 2008 4:22 pm

you got a pic of those mini glow sticks? I'm not sure what you mean.
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Unread postAuthor: SEAKING9006 » Sat Jul 05, 2008 6:58 pm

Check out the 4th of July thread. I posted a video there.
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Completed projects:
CA1 SMSS Basic Inline
CA3 PDAB Airburst Cannon

Current Project: Bolt action rifle (25x140mm + 1in shot)

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Unread postAuthor: TwitchTheAussie » Sat Jul 05, 2008 7:03 pm

Ah the patented and rare reverse chamber piston gun. Congrats Im glad someone here had the money to build a replica of mine (unposted as of yet). Top job mate :thumbright:
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Unread postAuthor: tansit234 » Sat Jul 05, 2008 7:59 pm

Impressive, four big bores and I have yet to attempt a piston. Good work, though I wonder how much that thing flexes at the tee's. I don't know if you have any brace blocks in mind but a stress crack (though unlikely with that size and weight) is a terrible fate for a gun. Have fun with it and keep it up.
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Unread postAuthor: Big Boom » Wed Jul 16, 2008 9:48 pm

Nice piston - pretty cool for your first pneumatic cannon
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Unread postAuthor: starman » Wed Jul 16, 2008 11:36 pm

Finally something to shoot that fabulous ammo you've been building.

The only thing I would suggest would be a sprinkler valve/airgun pilot replacement for that ball valve and a paint job.

Overall, looks solid! Good job... :wink:
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Unread postAuthor: FishBoy » Thu Jul 17, 2008 10:30 am

haha ya, if your talking about those darts, it's freakin crazy! :twisted:
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Unread postAuthor: stevenarroyo » Thu Jul 31, 2008 9:26 pm

thats a cool cannon u got there :o
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