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

1665821 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

753928 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

981735 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

1164857 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

466026 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

131409 Views

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

Topics

almost finnished

Last post by TheNewKid22
Replies: 9
by TheNewKid22 » Sat Feb 09, 2013 5:50 pm

First post

Just a quick update and question these are my airguns, neither are true semi auto's but the rifle style does have a blow forward bolt but the trigger...

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both i hope will be looking a lot better when there finnished but i'll be sure to show and let you guys know how they turn out :)

9 Replies

3320 Views

Last post by TheNewKid22
Mon Feb 11, 2013 6:15 am
Piston valve air cannon ratio

Last post by jackssmirkingrevenge
Replies: 5
by yodabeast14 » Sun Feb 03, 2013 3:16 pm

First post

Hi everybody, i'm building a piston valve air cannon. I was just wondering if there is a certain pilot chamber to air chamber ratio that is perfered...

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Plenty of barrel sealing T and X valves JSR - I've got a arsenal of them!

I think you built your way out of the typical spudder category a long...

5 Replies

3207 Views

Last post by jackssmirkingrevenge
Sat Feb 09, 2013 11:11 am
The supersonic ping pong gun

Last post by jackssmirkingrevenge
Replies: 17
by stuffbuilder » Mon Feb 04, 2013 7:49 pm
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Found this article on Gizmag (good website) and immediately thought of Spudfiles. Judging from the description in the article and what I've seen on...

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Nice to get a straight answer :)

#overlyhonestmethods

:D
17 Replies

10183 Views

Last post by jackssmirkingrevenge
Thu Feb 07, 2013 1:51 am
Why wont my piston valve open?

Last post by mattyzip77
Replies: 11
by Nick481 » Sat Feb 02, 2013 10:03 pm

First post

I just made my first piston valve cannon. It is a 2 barrel sealing piston valve housed in a 2 pvc tee piloted by a modified 1 inch jar top sprinkler...

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A 2 inch rubber sanding drum is the best piston I have ever used. Just put a washer on the front and back along with a neoprene sealing face, a bolt...

11 Replies

6029 Views

Last post by mattyzip77
Tue Feb 05, 2013 1:38 pm
Weekend project design.

Last post by El Chupacabras
Replies: 20
by El Chupacabras » Fri Feb 01, 2013 9:52 pm
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Hi everybody, this is my first post here, so have as much mercy as possible please.
Ok as a curious person, I found a post on the web Piston Valves...

Last post

Ok guys, I went to the tank factory, and my friend calculated the stress factors and all that for the shock absorbers and they don't pass, so that...
20 Replies

7297 Views

Last post by El Chupacabras
Tue Feb 05, 2013 12:31 pm
Titanium Co-Axial

Last post by sagthegreat
Replies: 7
by sagthegreat » Sat Feb 02, 2013 4:42 pm

First post

Hello guys, im back from the dead, and have a plan for this summer's project. I was thinking of a small .22/airsoft caliber coaxial, but made from...

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Ok, but if delrin only seals at high pressures, how will i bring the gun to high pressure if it needs high pressure to seal? (get what im sayin)

7 Replies

3120 Views

Last post by sagthegreat
Mon Feb 04, 2013 7:15 pm
JSR's awsum xbow airgun

Last post by iloveairguns
Replies: 24
by iloveairguns » Sun Jan 27, 2013 3:12 pm
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JSR, I lately noticed your cool crossbow that works in the same way (well almost) than the spring piston airguns, I'm gonna make a same type of...

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Hey i just got a great idea, when i was thinking that hot glue is very good for all sorts of casting, then i got the idea to cast my own hot glue...
24 Replies

12738 Views

Last post by iloveairguns
Sun Feb 03, 2013 8:50 am
Question on using co2 cartridges as power source

Last post by biged
Replies: 9
by drmoreau » Tue Jan 29, 2013 11:31 am

First post

Greetings all! I'm new to the forum and want to jump right in.

I am the commanding officer of a Stargate fan group and we are working on a pneumatic...

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Calc chamber size into cubic inches:

Radius * Radius * PI * Length

All 12 Grams of CO2 @ 70 degrees

6 Cubic inches 700 psi
7 Cubic inches 600 psi...

9 Replies

8398 Views

Last post by biged
Wed Jan 30, 2013 8:07 pm
Simple coaxial shotgun

Last post by far_cry
Replies: 16
by Marffy » Wed Nov 28, 2012 11:43 pm
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So i finally finished my muzzle loading piston air gun. I've only taken it to 150psi but its got some good power, can't wait to bump up the...

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nicely built and good stock,however the seam inside the 3/4 pipe make's
slower open time specially with that pilot valve.

what i suggest is ,put 3/4...
16 Replies

15384 Views

Last post by far_cry
Tue Jan 29, 2013 11:44 pm
2" piston valve or dual sprinkler valve?

Last post by MrCrowley
Replies: 24
by Nick481 » Mon Jan 28, 2013 3:40 pm
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Hey spudfiles,
I have recently built a 1 inch jar top sprinkler valve golf ball cannon. The sprinkler valve is piloted by a blowgun via a vinyl air...

Last post

My only worry would be how thin it is. If you use some pipe to sleeve over it, you're decreasing the flow around the barrel and lowering the ratio of...
24 Replies

15357 Views

Last post by MrCrowley
Tue Jan 29, 2013 6:39 pm
Solving pump-pistol issues

Last post by jackssmirkingrevenge
Replies: 46
by Brian the brain » Mon Jan 07, 2013 2:55 pm
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Lately I have been pondering over some exotic idea's.

One came from my desire to build a compact pump pistol.
While an integrated pump offers free...

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Going 9-ish mm would probably up the fun quite a bit.

Fun, well... haven't shot the Monsoon on a proper range literally in over a year, and that's...
46 Replies

16852 Views

Last post by jackssmirkingrevenge
Tue Jan 29, 2013 1:55 pm
Piston valve cannon

Last post by jackssmirkingrevenge
Replies: 3
by yodabeast14 » Sun Jan 27, 2013 10:17 pm

First post

Hi everyone, this is my first post on spud files. Im no stranger to spuding though. I hope to post some pictures of my previous works soon. I was...

Last post

Very nice work^^^^^^^ :D

As is the rest of the rifle ;)

3 Replies

2848 Views

Last post by jackssmirkingrevenge
Tue Jan 29, 2013 5:05 am
Slide Check Valve Leaking

Last post by jackssmirkingrevenge
Replies: 8
by moonmaster » Sun Jan 27, 2013 2:29 pm

First post

I recently purchased a qev and slide check valve for use on a semi-auto. The qev works fine, but the slide check valve leaks when under pressure in...

Last post

In the meantime this chart is a useful reference:

8 Replies

2958 Views

Last post by jackssmirkingrevenge
Sun Jan 27, 2013 5:35 pm
Building my first 'cannon'

Last post by Oxy
Replies: 4
by Oxy » Thu Jan 24, 2013 12:50 pm

First post

Hey guys.

So I've done a little research for a project I'm doing in school, and to be different I decided to make a pneumatic cannon. Now I've...

Last post

Thanks guys, I'll take a look at those threads :)

4 Replies

2825 Views

Last post by Oxy
Sun Jan 27, 2013 10:03 am
New homemade gun and stock (before staining), just finished!

Last post by iloveairguns
Replies: 21
by DaxSF » Wed Jan 23, 2013 8:53 am
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Hey guys,

My last air gun jammed so I decided to make a new one. I tried ordering a stock from amazon but it got stuck in customs for some reason,...

Last post

Woah quick reply, well cool if your gonna make it a bullpup and a pic would be nice of the front, and what type of trigger system does it have? Is it...
21 Replies

16957 Views

Last post by iloveairguns
Sat Jan 26, 2013 10:01 am
PCP Airgun & valve ideas??

Last post by auxiliary
Replies: 21
by iloveairguns » Sun Jan 20, 2013 7:15 am
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So im gonna build a pcp airgun. At least a 2 shot. And i need a simple valve for the gun, any tutorials? and the whole gun, i need info on that too....

Last post

This seems too obvious...

Maybe it's a joke.

Or a test...
21 Replies

7822 Views

Last post by auxiliary
Wed Jan 23, 2013 7:18 pm
My project - HPA powered SMG for .50 lead balls

Last post by jackssmirkingrevenge
Replies: 16
by Schlauncha » Fri Oct 12, 2012 5:42 am
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Hello. First post here, so let me give a brief background. I am into guns, and having shot various machine guns in the Army, I sure would enjoy being...

Last post

Just wanted to follow up, this Air Ordinance SMG .22 is great, my ballistic gel test showed approximately 5 inches of penetration at 50 feet, which...
16 Replies

16075 Views

Last post by jackssmirkingrevenge
Wed Jan 23, 2013 9:30 am
Copper Marble Cannon

Last post by jackssmirkingrevenge
Replies: 84
by cometboy » Tue Nov 15, 2011 12:49 pm
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I am sorry in advance if this is a well worn topic, but I would like some help in finding a well documented design for a copper cannon that would...

Last post

HAHA! Love how the eyes come off intact, brilliant!
84 Replies

34324 Views

Last post by jackssmirkingrevenge
Tue Jan 22, 2013 6:41 pm
Help with piston in coaxial QEV (never encountered this b4)

Last post by jsefcik
Replies: 14
by DaxSF » Tue Jan 22, 2013 2:53 pm

First post

Hi,

Apparently I have a problem with my QEV. The piston I tried making out of epoxy didn't work out too well for some reason, so I stuck to my good...

Last post

Hes has two of my valves making pistons for em:)

14 Replies

13166 Views

Last post by jsefcik
Tue Jan 22, 2013 6:39 pm
Using a QEV with the chamber and the supply as one ?

Last post by evilvet
Replies: 15
by evilvet » Sun Jan 20, 2013 11:31 pm
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I am now the proud owner of a basic eBay QEV, furthering my knowledge of pneumatic launchers for high speed photography here in wonderful land of Oz....

Last post

Thanks to all who replied, I will do some testing and advise the result.

Cheers
15 Replies

9899 Views

Last post by evilvet
Tue Jan 22, 2013 5:33 pm
check valve needed in piston

Last post by jsefcik
Replies: 6
by jsefcik » Thu Jan 17, 2013 8:47 pm

First post

I was looking at my piston ( I didnt make it) nd there is a tiny hole drilled towards the top of it. And inside the coupler there is a washer with a...

Last post

You wont see that much of a difference, I M O the sanding drum is the best way to go. You dont have to alter it and its pretty much its own...

6 Replies

2518 Views

Last post by jsefcik
Sat Jan 19, 2013 7:55 am
Sprinkler Valves?

Last post by Zeus
Replies: 2
by PhanBoy » Sat Jan 19, 2013 2:47 am

First post

Hi
I'm planning to build my own pneumatic gun using this instructable

But since I'm in Australia, I can't find any of the two sprinkler valves...

Last post

Most Sprinkler valves from Bunnings will do the trick, this fella must be smoking something if he thinks only certain sprinkler valves are good for...

2 Replies

1399 Views

Last post by Zeus
Sat Jan 19, 2013 6:00 am
For Sale: Never-used SGTC Supah Valve-Plus/other SGTC parts

Last post by 8tonsemi
Replies: 13
by carl_lawhon » Sat Nov 10, 2012 4:13 pm

First post

Hi fellow spudders,

I have a Spudtech Supah-Valve plus, a Spudtech dual sprinkler valve system, and two four-foot sections of Sch. 80 rifled pipe....

Last post

How long are each of the barrels?

Also very interested in the Supah valve :lol:

updated photos and dates would be nice just to make sure
4 feet...

13 Replies

13553 Views

Last post by 8tonsemi
Wed Jan 16, 2013 6:49 am
First Design, T-shirt Cannon, feedback on my initial design.

Last post by c11man
Replies: 55
by garybdavis » Sun Nov 04, 2012 2:58 pm
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I’m starting my first built which will be a pneumatic t-shirt cannon. After a few days of reading through various builds in this forum here is what...

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The purple paint really gets me. Amazing work on the launcher, even is designed for non destructive purposes :shock:

and with that carrying case,...
55 Replies

33186 Views

Last post by c11man
Wed Jan 16, 2013 12:58 am
non pre-pressured copper cadridge...

Last post by MRR
Replies: 3
by quark1980 » Mon Jan 14, 2013 11:56 am

First post

after my first sucssesfull build, a 15mm ID single shot, Qev gun, i wanted to try something new...

i cant say i already have seen something around...

Last post

Not exactly what you have in mind but the ejection system might be of interest.

3 Replies

2189 Views

Last post by MRR
Mon Jan 14, 2013 2:48 pm

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