Pneumatic Cannons

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SpudFiles Potato Gun Commercial

Last post by quinn whitsitt
Posted in Combustion Cannons
Replies: 15
by PCGUY » Tue Oct 29, 2013 10:54 pm » in Combustion Cannons
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I've been wanting to get in some spud shooting action this fall before the weather got cold. I know it's been a while since I filmed anything for...

Last post

thank you for creating this website is there anything i can do to help
15 Replies

1666998 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
Directional Control Valves (3way valves and stuff like that)

Last post by jpalf1
Replies: 86
by POLAND_SPUD » Sun Mar 07, 2010 1:12 am
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Directional Control Valves, commonly refereed to as 3,4,5 etc. valves or spool/poppet valves etc., can be very useful for spuders.
They can be used...

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very,useful info for a beginner such as myself.The links are great as well.Thankyou.(you won't believe this but as i was reading,my fridge comp...
86 Replies

754316 Views

Last post by jpalf1
Sat Apr 13, 2013 10:53 am
Sprinkler Valve Troubleshooting Guide

Last post by quinn whitsitt
Replies: 64
by noname » Sat Jun 16, 2007 12:15 am
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Sprinkler Valve Troubleshooting

This is a guide to sprinkler valve problems. Before creating a new topic to ask questions on why your valve isn't...

Last post

great job everyone
64 Replies

982052 Views

Last post by quinn whitsitt
Thu Feb 22, 2024 2:18 pm
Piston Valves Explained Visually

Last post by pavina
Replies: 178
by clide » Mon May 14, 2007 11:21 pm
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I had this posted on Spudtech, but I am reposting it here to hopefully help some people out and allow for discussions/updates.

Well I made this...

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Thanks for sharing this! It might also be useful to mention how friction and maintenance can affect performance over time. Looking forward to more...
178 Replies

1165159 Views

Last post by pavina
Fri Sep 27, 2024 4:05 am
"How Much CO2 do I need?"

Last post by choke
Replies: 32
by BC Pneumatics » Sun Apr 01, 2007 9:52 pm
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For all those people out there looking for a rough idea of how much CO2 they will need for a chamber of any given size-
Just multiply the volume of...

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Great piece of software :) I've been kicking numbers round my head for a while now, and wondered if someone here could confirm. I'm filling a 1.5 dia...
32 Replies

466225 Views

Last post by choke
Thu Jul 04, 2013 2:38 pm
Valve Cutaways

Last post by jhalek90
Replies: 8
by PCGUY » Sat Feb 26, 2005 9:10 pm

First post

VALVE CUTAWAY

Provided By - Longshot

These are some pictures of some of the most popular valves used on spud cannons. Only difference is, these...

Last post

Can someone fix the picture links??

8 Replies

131460 Views

Last post by jhalek90
Wed Oct 07, 2009 2:13 pm

Topics

CO2 cartridge rifle

Last post by jackssmirkingrevenge
Replies: 16
by stuffbuilder » Mon May 28, 2012 9:38 pm
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Here's my latest project. Its an air rifle with a 4 foot long 3/4 inch barrel made to shoot spent 12 gram CO2 cartridges. I carved the stock and grip...

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If you cut off the pointy bit and weight the roundy bit with solder, there won't be any need for fins ;)
16 Replies

7496 Views

Last post by jackssmirkingrevenge
Mon Jun 18, 2012 1:45 am
Floating O ring Not Sealing

Last post by mattyzip77
Replies: 6
by shardbearer » Thu Jun 14, 2012 11:58 pm

First post

I just finished my 1 1/4 Tee QDV and found that it leaks. A lot. From what I can tell, the O rings are in the middle of the gap in the piston, not...

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Try using some nail polish. Sounds stupid I know but I havve done it and it worked awesome.

6 Replies

6195 Views

Last post by mattyzip77
Sat Jun 16, 2012 2:23 pm
PVC + Delrin piston valve cannon (picture heavy)

Last post by Desmo
Replies: 46
by Desmo » Mon May 21, 2012 12:22 pm
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Hey! First post here, what a great forum. So much info here that it's kept me busy for the last few weeks trying to take it all in!

But anyway,...

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Matty - cheers brah :P Artillery green is definitely the colour of choice!

As for semi auto not 100% on that yet. but sliding a second T piece over...
46 Replies

26907 Views

Last post by Desmo
Sat Jun 16, 2012 2:47 am
Need a design for a simple, cheap, piston air gun!

Last post by Crna Legija
Replies: 7
by jfullr97 » Wed Jun 13, 2012 10:51 pm

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8) Yep lol Im trying to make a simple piston air cannon for my first try on a piston valve, have not made them before so il need help and a...

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make this a sticky??

Would just go to wast since none of em search, when you make a account it should show you the how to use search thread then...

7 Replies

3439 Views

Last post by Crna Legija
Fri Jun 15, 2012 1:00 am
Balance Spool Valve

Last post by josephlys
Replies: 17
by josephlys » Mon Jun 11, 2012 9:31 am
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I've looked at balance spool valves and they seem to be more reliable than close ratio T-piston valves that rely on a pilot valve to fire. If I'm...

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That's a good idea Brain the brain, thanks. Cracked bones would sux, lol

Though I'm still learning & looking at other options hehe.
17 Replies

13827 Views

Last post by josephlys
Wed Jun 13, 2012 12:15 pm
Bolt sled help

Last post by jrrdw
Replies: 1
by Mattwarne » Sat Jun 09, 2012 7:43 am

First post

Hi guysI am planning on making a pvc air gun but I have a problem
I dont know how to make a bolt sled for it
I will be fireing nail darts
Could...

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There are plenty of bolt action pneumatics in both the discussion and showcase sections. Search bolt action in the pneumatic sections, you will find...

1 Replies

1074 Views

Last post by jrrdw
Sat Jun 09, 2012 6:38 pm
FS Spudgun Tech Supah Valve Plus Electronic $75 Shipped

Last post by trippyamine
Replies: 6
by zerochance » Mon Jun 04, 2012 7:53 pm

First post

Matt is having some problems and couldn't come through with the payment on this so it is back up for sale. $75 shipped and I guarantee it to work or...

Last post

Ill take it :) lets pm!

6 Replies

2480 Views

Last post by trippyamine
Sat Jun 09, 2012 6:27 am
Accident with Blowgun on Sprinkler Valve

Last post by jsefcik
Replies: 18
by mr.potatohead » Wed Jun 06, 2012 4:00 pm
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well today i was pumping up my pnematic spudgun and all of a sudden at 85-95 psi the blow gun shot of and i later found out that my brother...

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Neither would I.
'Not purged' meant that the tank still has gas in it, not that the gas is above atmospheric pressure.

Cutting through a pressurized...
18 Replies

5879 Views

Last post by jsefcik
Fri Jun 08, 2012 3:45 pm
ive seen the springs taken out of modified sprinkler valve !

Last post by rna_duelers
Replies: 6
by mr.potatohead » Wed Jun 06, 2012 5:56 pm

First post

is this true that removing the spring from a modified sprinkler valve will improve the performance

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It helps to relocate the diaphragm to its seat,without it the diaphragm can actually get stuck on the side of the seat and the wall requiring the...

6 Replies

3086 Views

Last post by rna_duelers
Thu Jun 07, 2012 1:22 am
Idea for QDV Valve

Last post by shardbearer
Replies: 7
by EricT » Wed Jun 06, 2012 11:06 am

First post

I'm making a PVC QDV in a 2 T, 2 x 2 -1.25 adapters, 1.25 ported pipe, and a 1 coupler for a piston. I found that the 1 coupler with two plugs on the...

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I think that the simplicity of mechanical activation and only one valve is one of the big benefits of a QDV, it's what convinced me to make one. If...

7 Replies

2844 Views

Last post by shardbearer
Wed Jun 06, 2012 11:41 pm
Gum ball gun.

Last post by 8tonsemi
Replies: 2
by 8tonsemi » Sun Jun 03, 2012 10:27 am

First post

Here is a video of my gum ball gun. It's a 1 1/2 inch chamber with a half inch barrel and half inch ball valve. I made this a while back it...

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Did not understand a word you said before the shot... :lol:

I didn't notice that till now lol.

2 Replies

1683 Views

Last post by 8tonsemi
Tue Jun 05, 2012 5:48 pm
Experimental machined HPA 1 inch valve

Last post by Brian the brain
Replies: 12
by High-PSI » Fri May 11, 2012 9:05 pm

First post

This valve started as a one inch diaphragm valve that has a bad cap and diaphragm. So, starting with just the valve body, I machined a cylinder and...

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Here is the only one I have.
It is taken from a valve manufacturer's magazine ( Bürkert) featuring my report on the aircannon demo I did at the...

12 Replies

7493 Views

Last post by Brian the brain
Tue Jun 05, 2012 4:27 pm
Paintball rocket launcher(kipkay)

Last post by AircannonSweden
Replies: 2
by AircannonSweden » Mon Jun 04, 2012 2:15 pm

First post

I maybe will do something like this:

Can i blow my hands off? becuse a CO2 cartridge has alot of PSI!

I know,this is a pretty stupid question: Is...

Last post

Do a little research in the SpudWiki which will help answer your questions.

Thanks m8 :)

2 Replies

1627 Views

Last post by AircannonSweden
Mon Jun 04, 2012 2:42 pm
Barrels

Last post by wyz2285
Replies: 57
by wyz2285 » Thu May 10, 2012 3:06 pm
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Hi everybody
I found this site , witch sells rifled barrels to Portugal.
They have L.W barrels and HW/crosman barrels both in .177 or .22.
I´m...

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Made a simulation about 4 10-32 screw on chamber, safety factor about 1.5.
Increased to 6 10-32, minium safety factor 4.66 :) chamber wall 2.5mm...
57 Replies

29858 Views

Last post by wyz2285
Sun Jun 03, 2012 9:38 am
pneumatic potato cannon

Last post by 8tonsemi
Replies: 2
by mr.potatohead » Sat Jun 02, 2012 1:15 pm

First post

leave comments on tips and ideas

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It looks solid. The only tip I have for yours make sure all your parts are pressure rated and they are NSF-pw. Good job :lol:

2 Replies

2387 Views

Last post by 8tonsemi
Sun Jun 03, 2012 8:46 am
1/4" gas thread taps?

Last post by jmez1996
Replies: 10
by jmez1996 » Fri Jun 01, 2012 9:26 am

First post

Does anybody know if you can get thread tap and die set's for gas threads. its the 1/4 tap that i'm after specifically. the same thread that standard...

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Personal opinion, but if you're not going to buy a set - if you're just going to buy ONE tap - get NPTF.

NPTF is just NPT built to tighter...

10 Replies

4644 Views

Last post by jmez1996
Sun Jun 03, 2012 3:12 am
3/4" pvc cap as a piston?

Last post by mattyzip77
Replies: 4
by mr.potatohead » Sat Jun 02, 2012 1:01 pm

First post

well i found that a 3/4 inch cap slides pretty smoothly into a 1inch tee so im going to trie to make a piston from it

Last post

what do you mean
What I mean is, usually the piston needs to fit inside of a piece of pipe, not the tee. If you are trying to make a barrel sealer...

4 Replies

1480 Views

Last post by mattyzip77
Sat Jun 02, 2012 4:41 pm
Building my first cannon...some questions

Last post by mattyzip77
Replies: 42
by aj23 » Wed May 09, 2012 9:57 pm
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So let me start by what I want to do:
My plan is to build a cannon with a 2 inch barrel, and a 4inch chamber. Initially, I was thinking of just...

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Its not the best rubber in the world, you will never get a 100% seal with it.. And as Crna Legija said above you gotta bolt it. As I said before, it...
42 Replies

11307 Views

Last post by mattyzip77
Sat Jun 02, 2012 12:42 pm
Launching Confetti Idea's

Last post by Technician1002
Replies: 3
by nukewater » Thu May 31, 2012 1:49 pm

First post

Have a multi-shot pneumatic t-shirt gun, with a Ø3 x18 Barrel. We had already planned on shooting out some t-shirts at a show, but thought it'd be...

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If you want to include streamer, they travel far. Tightly rolled on launch and stacked works very well. The stacking contains the mass for good...

3 Replies

1907 Views

Last post by Technician1002
Thu May 31, 2012 8:06 pm
Sprinkler Valve Honking When Opening and Extremely Poorly

Last post by jhalek90
Replies: 7
by nukewater » Tue May 29, 2012 6:55 pm

First post

Hey guys, my first cannon, is a tshirt launcher. everything seemed great. Modified the sprinkler valve with a blowgun handle, and it has a dual tank...

Last post

how did you plug the pilot hole with your finger at 60+ psi???

Im guessing you are doing something a little bit wrong...

7 Replies

7519 Views

Last post by jhalek90
Thu May 31, 2012 8:41 am
New Episode is up guys. Destorying VHS

Last post by jackssmirkingrevenge
Replies: 17
by Spud Destruction » Mon May 28, 2012 6:14 pm
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This was a fun one to do and hope you guys enjoy it, and if you have any suggestions on future episodes let me know and we will try and do it .

Last post

Second on that list ;) sign of humility see hehehe
17 Replies

4837 Views

Last post by jackssmirkingrevenge
Wed May 30, 2012 11:40 pm
Simple Bait Launchers

Last post by airpress
Replies: 11
by airpress » Tue May 22, 2012 12:01 pm

First post

Hi.

If made a few weeks ago 2 exactly aircannons.
Some specs:

- 30cm 2 steel pipe
- 1m 22mm copper barrel
- sanded with fine steelwool and...

Last post

I my eyes, it is not steam, but just the water that is expanding.
Or i'm wrong? When i open the ball valve, its just a little bittle pressure water...

11 Replies

5857 Views

Last post by airpress
Tue May 29, 2012 3:39 am
hammer valve question

Last post by mr.potatohead
Replies: 2
by mr.potatohead » Tue May 29, 2012 12:00 am

First post

hi guys i was just wondering if anybody has a diagram of a hammer valve and how does it work

Last post

wow seem pretty simple and looks as if it works good!!! thank you jackssmirkingrevenge

2 Replies

1927 Views

Last post by mr.potatohead
Tue May 29, 2012 12:11 am
How to make PCP hand pump

Last post by darmawan
Replies: 4
by darmawan » Mon May 28, 2012 8:02 pm

First post

sorry for this knowless asking ,hopefully all expert can answer my question
id like to know how pcp hand pump goes to work
would all expert can give...

Last post

thanks!!!! go trough there :D

4 Replies

6367 Views

Last post by darmawan
Mon May 28, 2012 11:36 pm
Piston Seal / Bumper Info

Last post by velocity3x
Replies: 7
by velocity3x » Wed Jul 20, 2011 4:20 pm

First post

I know that some members have trouble with front seals and bumpers on their piston valve designs. This is a piston assembly I run is a cannon which...

Last post

Is that the material of the back of the pilot, or the back of the piston?

The plunger on the back of the piston is PVC. I'd post solidworks...

7 Replies

5930 Views

Last post by velocity3x
Mon May 28, 2012 11:10 pm

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