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The Punisher

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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The Punisher

Unread postAuthor: PCGUY » Sat Feb 05, 2005 1:41 pm

<div align="center">THE PUNISHER

Provided By FoxxLord - <a href="http://www.geocities.com/cain333_2000/">http://www.geocities.com/cain333_2000/</a>

Here's my latest cannon I built over the weekend, The Punisher. It's a coax design with the most simple diaphragm design I could find. The gun is about 17" without the sprinkler exhaust valve. I haven't put any goodies on it yet because I haven't decided weather to mod the sprinkler valve with a blowgun or just go with a small electric push button trigger. Here's some photos:</div>
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diaphragm22.jpg
This poorly taken photo was supposed to be a shameless plug for the Rubbermaid company! I cut the diaphragm from a Tupperware lid. I didn't need to drill the hole at the top but I wanted to make sure air would pass through and it does.

Yesterday I cut a 1/8&quot; neoprene rubber disc and used it in place of the Rubbermaid disc. The noise level was reduced a little and the neoprene has more flex so I get more power per shot.
diaphragm22.jpg (6.03 KiB) Viewed 7836 times
punapart.jpg
The Punisher broken down. Did I mention it's simple? Just a clean out plug and diaphragm! The clean out plug has a 3/4&quot; steel nipple (hehe) threaded into it along with a regular Schrader valve. That's not the configuration I hoped for, but space is at a premium at the back of the gun, and it still works.
pun.jpg
Another shot of the assembled gun. I used a 3&quot; Wye fitting and just built around it until I got what I was looking for. About 5 stomps on my foot pump gets it up to 20psi, gotta love that about small chambers.
punisher.jpg
Here's a picture just to let you get a good idea of the size of the weapon. I wanted it small and hand held so this is what I came up with. I use those foam practice golf balls as primary ammo.
Last edited by PCGUY on Wed Apr 19, 2006 6:14 pm, edited 1 time in total.
Yes, I am the guy that owns & operates SpudFiles (along with our extremely helpful moderators).
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Unread postAuthor: deathtodeer666 » Wed Sep 07, 2005 7:01 pm

very simple and inexpensive design, how do u trigger the sprinkler valve

edit: thanks
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Last edited by deathtodeer666 on Sun Oct 02, 2005 4:42 pm, edited 1 time in total.
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Unread postAuthor: spudshot » Wed Sep 07, 2005 7:51 pm

i edited your post, you post a pic by uploading it to the internet, PCguy has an uploader on this site actually, then you post the URL with the image tags

he actuates the valve by electricity
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Unread postAuthor: cyber master » Sun Oct 16, 2005 7:46 pm

cool name, cool hand cannon!!!! 8) :twisted: :twisted: i'm thinking of making one myself. of course in my own style. 8)
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Unread postAuthor: saladtossser » Sun Oct 16, 2005 7:59 pm

always wondered y foxxlord loves mini coaxials
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Unread postAuthor: Andrew52 » Tue Mar 28, 2006 11:34 pm

how stiff do the disk things have to be
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Unread postAuthor: unhipjuffowupp » Wed Apr 12, 2006 7:01 pm

i tried to maek this.. but the cleanout plug WILL NOT stop leaking air. I can pump it and fire it... but if you dont fire it withing a good minute... all the PSI will be gone. :(
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Unread postAuthor: Shrimphead » Wed Apr 12, 2006 7:17 pm

Did you wrap teflon tape around the threads?
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Unread postAuthor: sam_516 » Mon Apr 17, 2006 9:26 pm

***PUFF***

controlled insanity=genius
uncontrolabel insanity=miss-understood genius
:x :shock: :D :) :( :o 8) :lol: :?
miss-understood genius= me and rna_duler

we are making a 10x hybrid out of 2 and a 1/2 inch thick steel pipe

but we will be under ground when we let it off
when we complete this monstosaphy we will put it on the net with movie and pics

go to http://www.myspace.com/i_am_the_originaL_sam

kk well nice cannon i have a miniture one of them but still powerfull
:idea: :idea: :idea: :idea: :idea: :idea: :idea: :idea: :idea:

NOTE FROM PIMPMANN22:
Stop posting these myspace banners! Your never going to get 10X with propane, so I hope you were planning on another fuel...
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Unread postAuthor: Rambo » Tue Apr 18, 2006 12:12 am

Are you trying to say that the propane won't be gas any more?What's the presure in the propane tanks?
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Unread postAuthor: boilingleadbath » Tue Apr 18, 2006 3:04 am

Propane tank pressure is ~90-100 psi at room temp.
Of course, this being a steel gun, it wouldn't be too hard to heat the gun so the vapor pressure of propane was >10 atm. (less than an aditional 50*C, I would expect, although I'm not looking it up at this time of day)

...and all 3 of these posts really should be moved somewhere.
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Unread postAuthor: pvc » Mon Jun 05, 2006 10:38 am

nice and inexpinsive. im curentaly working on a sniper dish shooter so if u have any ideas please pr me. i have a 150 psi propane tank and it is extremaly small, but fits lots of propane. :) :) :) :)
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Unread postAuthor: )DEMON( » Mon Jun 05, 2006 11:16 am

PostPosted: 04/18/2006 1:04 AM

do more research!
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Forever dreaming...
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Unread postAuthor: sgort87 » Tue Jun 06, 2006 11:01 am

Propane turns to a liquid long before 150 psi. So adding any extra pressure to make it 150 is not at all a lot of propane. MAYBE one shot but that's it.
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Unread postAuthor: Bluetooth » Sun Aug 13, 2006 2:59 pm

is that white disk the piston? Sorry about the noob question im new to piston valves.
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