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

1079622 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...

Last post

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

527056 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

620362 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...

Last post

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

783423 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

364475 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

88819 Views

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

Topics

qev valve setup

Last post by twessel
Replies: 4
by twessel » Wed Dec 03, 2014 4:39 pm

First post

Need some help to make this qev work. What's wrong with my.setup?

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Yes. The back air line is active air pressure. It's a needle valve which is letting a small amount of air fill. About one shot a second.The small...

4 Replies

1805 Views

Last post by twessel
Sun Dec 07, 2014 12:59 am
Regulators

Last post by ninjamonkey127
Replies: 9
by ninjamonkey127 » Wed Dec 03, 2014 3:50 pm

First post

Hello everyone! I have been building a pneumatic coaxial rifle and i'm wanting to get a 3000psi HPA tank, found one for pretty cheap on amazon. I'm...

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I don't think that calculator has do with pvc air guns. They want me to enter a psi reading for my air gun 500psi or more. I only plan on putting 60...

9 Replies

3859 Views

Last post by ninjamonkey127
Sat Dec 06, 2014 3:49 pm
Where Are The Tech Specs For Alpha Valves!?

Last post by n05gr0th

by n05gr0th » Sun Nov 30, 2014 3:28 am

Hey guys,

I'm currently playing around with a few configurations in GGDT and am interested in simulating the performance of a cannon using a 3/4...

0 Replies

5935 Views

Last post by n05gr0th
Sun Nov 30, 2014 3:28 am
First post and pneumatic!

Last post by mark.f
Replies: 10
by Tep » Fri Aug 15, 2014 11:25 am

First post

Hi guys,

First post on the files; I've lurked for a few weeks since google lead me here but ready to make a post and share my creation with you...

Last post

Looks good!

10 Replies

5465 Views

Last post by mark.f
Fri Nov 28, 2014 10:47 am
"Fridgy" internal pressure relief valve

Last post by c11man
Replies: 2
by c11man » Wed Nov 26, 2014 12:40 am

First post

So after a good amount of time away from spudding, I decided to dig out the old brass/aluminum bearing cannon. And boy was it a good choice!...

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I am not sure i understand the problem, but in that electric box there is a termic resistance meant to stop the motor to overheat . I did canceled...

2 Replies

3268 Views

Last post by c11man
Wed Nov 26, 2014 2:09 am
what type of valve? 2 position 3 way?

Last post by Ianbuckwell
Replies: 4
by Ianbuckwell » Sun Nov 23, 2014 3:49 am

First post

I have tried researching, but must animations etc seem to be flash and my phone doesn't support this. So can someone advise me what type of valve I...

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Thanks, reassuring to know. Are all of the 3/2 valves the same as in the flow rthrough the port, or are some designed with better flow for our...

4 Replies

3112 Views

Last post by Ianbuckwell
Mon Nov 24, 2014 2:27 pm
.54 cal qev muzzleloader

Last post by Gippeto
Replies: 13
by newenglandhvac » Wed Nov 12, 2014 10:58 pm

First post

At 500 psi my .54 cal qev muzzleloader launches a 300 grain patched slug at about 1000 fps. Barrel is rifled from a knight black powder rifle. 3/4...

Last post

Also, the fine folks at Humphrey told me their 3/4 qev is rated like the rest on paper, but, its just for loability.

I've no doubt that you spoke...

13 Replies

6353 Views

Last post by Gippeto
Tue Nov 18, 2014 9:48 pm
If only I had the brains, skills and tooling...

Last post by Gippeto
Replies: 7
by Ianbuckwell » Thu Nov 13, 2014 11:42 pm

First post

Came across this design, I personaly have never seen anything like it, found it fascinating, shame he didn't make it about 10 times the power, but...

Last post

Not just you. Seemed like the bursts he was getting were three-ish bbs fired at the same time. Guessing the mechanism doesn't cycle properly while...

7 Replies

3349 Views

Last post by Gippeto
Sun Nov 16, 2014 10:40 am
Need Help With CBV Design

Last post by Gippeto
Replies: 8
by grumpyoldman » Mon Nov 03, 2014 8:53 pm

First post

Hey everybody. I've got a problem that I hope you guys can help with.

I've been trying to design a counter balanced valve and ran into a problem...

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Another method to keep the o-ring in it's groove, is to drill a series of holes from the face through to the base of the o-ring groove...during...

8 Replies

10999 Views

Last post by Gippeto
Sun Nov 16, 2014 1:53 am
QEV vs homemade piston valve

Last post by Gippeto
Replies: 11
by tater slayer » Sun Oct 19, 2014 2:10 pm

First post

Helo, Spudfiles!
I'm about to begin my 3rd air cannon build, and this time, I plan to make a smaller air cannon(1/2 inch barrel) working off of a...

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Still have a preference for home built....you LEARN by building and trouble shooting....you learn next to NOTHING by threading pre-built stuff...

11 Replies

7623 Views

Last post by Gippeto
Sun Nov 16, 2014 1:46 am
quick sodastream reg question

Last post by Baldyforks
Replies: 5
by Baldyforks » Sun Sep 28, 2014 6:47 am

First post

Hi guys, I'm just have a question about using a sodastream tank as my air supply. I have an adaptor and a flow reg that goes on the adaptor as the...

Last post

thanks guys, ill just do it and hope for the best, I only asked really as an extra safety

5 Replies

5058 Views

Last post by Baldyforks
Thu Nov 13, 2014 4:55 am
Air volume from tank to chamber

Last post by mobile chernobyl
Replies: 4
by Vaeevictiss » Sat Nov 08, 2014 7:06 pm

First post

I hate math lol, so Im looking for a simple calculator or something similar to figure out, basically, how many shots i could get out of an tank of...

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That is a safe approximation - and makes a lot of sense if you think about the vast inequalities in volumes!

That .8 after 6 won't yeild a 100psi...

4 Replies

3210 Views

Last post by mobile chernobyl
Sun Nov 09, 2014 6:20 pm
Shuttle Valve = QEV?

Last post by cammyd32
Replies: 5
by tater slayer » Sun Oct 26, 2014 5:06 pm

First post

Hey guys!
So here I have another stupidly simple question. As some of you know, I'm building a 1/2 inch piston valve-operated cannon, and I'm trying...

Last post

You are right, from what I have seen in the past shuttle valves are very similar to quick exhaust valves, and work similarly to how you described...

5 Replies

3627 Views

Last post by cammyd32
Tue Nov 04, 2014 4:38 am
2" bore rapid fire airgun

Last post by wdr0
Replies: 7
by wdr0 » Tue Oct 28, 2014 8:57 am

First post

So as some of you may have seen I built a large pneumaric: and I also recently built a large hybrid: I have an idea for yet another piece of...

Last post

Well this plan is going to remain a plan for the time being. We pulled the heads on the compressor engine and it is pretty well toast, rusted solid....

7 Replies

6351 Views

Last post by wdr0
Fri Oct 31, 2014 10:03 am
My old copper spudgun

Last post by Slugfoot
Replies: 10
by Slugfoot » Thu May 03, 2007 11:09 pm

First post

This is my old copper spudgun which I built last year.
It's been up on UKSGC for a while now but I've only just got around to posting it here...

Last post

Bump. :)

Hello again.
It's strange to be posting here again after all this time. I was prompted to visit back again after coming across a few...

10 Replies

6164 Views

Last post by Slugfoot
Sun Oct 26, 2014 10:49 am
build log and...pneumatic C:B ratio question

Last post by lockmanslammin
Replies: 8
by lockmanslammin » Sun Sep 28, 2014 10:59 pm

First post

Hello all,
here is a pic of the build, up to the point that I'm at...

so now I need to know what you guys think would be optimal chamber to...

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A little update on the variable volume chamber plug. I don't quite know why , but I think I might have been over tightening it when I put it in the...

8 Replies

4641 Views

Last post by lockmanslammin
Sat Oct 25, 2014 11:48 pm
Need some help with my design

Last post by lockmanslammin
Replies: 9
by Hyudryu » Thu Oct 02, 2014 9:22 pm

First post

Hi guys, I have my design for an air cannon, but I have some questions about some parts.

So the concept of the air cannon would be pretty simple. I...

Last post

That pump will work, but I think you will be suprised by how many pumps it will take to get the pressure up very high.

What is the length of your...

9 Replies

4948 Views

Last post by lockmanslammin
Thu Oct 23, 2014 5:34 pm
Like a B.O.S.S.

Last post by mobile chernobyl
Replies: 26
by mobile chernobyl » Thu Jul 02, 2009 8:29 pm
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B.O.S.S.
Bottle On System Sniper

Here's just a glimpse into my latest project - a retrofit of one of my copper guns to include an on-board...

Last post

It was off of a blowback stacked tube paintball gun - probably a spider or something similar... You should be able to find them on eBay for really...
26 Replies

14117 Views

Last post by mobile chernobyl
Sat Oct 11, 2014 11:28 pm
1000PSI+ Canon/BB Shower Launcher

Last post by biged
Replies: 4
by Ricky » Thu Aug 28, 2014 4:27 pm

First post

Hello all! Got refered here as I have a project that I need your information on.

I'm looking to create a shoulder/mortar launcher that would shoot...

Last post

The main point of this would be to act as a longer distance launcher/shower gun for suppression. Could also be used as a mortar to have bbs rain down...

4 Replies

6342 Views

Last post by biged
Sat Oct 11, 2014 5:55 pm
350psi on 150psi rated sliding valve and 150psi rated QEV.

Last post by Brian the brain
Replies: 9
by ham_machine » Fri Sep 26, 2014 4:42 pm

First post

I have spent quite a few days looking through the web at different QEV's, for any alternatives or recommendations. I do not want to build one, I...

Last post

Not me personally..I have had a pilotvalve develop a leak resulting in an unintended launch.

I believe it is quite common among British spudders to...

9 Replies

6091 Views

Last post by Brian the brain
Fri Oct 10, 2014 1:13 pm
Gods of the spud, I call on you experience and understanding

Last post by Brian the brain
Replies: 5
by Bullseye » Tue Oct 07, 2014 10:51 am

First post

Hi all,

I've been lurking for a couple of years now but I've finally found myself in a position to begin experimenting. The main benefit of the time...

Last post

The valve is placed inside a pressuretube.

Searchterm CBHV..
Counterbalanced hammervalve.

It is not completely balanced though.
Pressure keeps it...

5 Replies

3067 Views

Last post by Brian the brain
Fri Oct 10, 2014 1:10 pm
Using the Gas Gun Design Tool

Last post by wdr0
Replies: 6
by ham_machine » Sat Oct 04, 2014 6:43 am

First post

Please Excuse me for my ignorance, but the Gas Gun design Tool doesn't seem to be working.

I have read In quite a few articles and forums about...

Last post

I am glad I saw this. I had the same issue after downloading it. Computers are definitely not my strong suite. I assumed it was my computer that was...

6 Replies

7701 Views

Last post by wdr0
Tue Oct 07, 2014 7:53 pm
Will this QEV set-up work? Please leave your opinion below.

Last post by mulderscully911
Replies: 3
by ham_machine » Sun Sep 28, 2014 4:15 pm

First post

Thought I would start a new topic on this subject. So I can get as many opinions as possible if this would work or not before I begin buying...

Last post

I think your gun designs are amazing! Bravoooo! QEVs are very good for spud guns

3 Replies

2145 Views

Last post by mulderscully911
Mon Sep 29, 2014 12:58 pm
My New Coaxial Design, with some questions.

Last post by mobile chernobyl
Replies: 2
by Gabriel S » Sat Sep 27, 2014 6:54 am

First post

Hi
Ok, so a few weeks ago I had a go with a carbine black powder musket at a game fair. I found it great fun so thought it would be good if I could...

Last post

You will need some sort of bumper system for sure! Otherwise the back of your piston will get destroyed, and possibly the fill schrader valve will...

2 Replies

2299 Views

Last post by mobile chernobyl
Sun Sep 28, 2014 3:31 pm
Basically, will this QEV set up work?

Last post by ham_machine
Replies: 4
by ham_machine » Sun Sep 28, 2014 9:10 am

First post

quick exhaust diagram converted.jpg

qev1.JPG

This Quick Exhaust Valve in this diagram is a shop brought QEV. One of those ones from ebay.

I...

Last post

Technician1002

Thanks, well I might give this a go then.

Just thought of a possible problem though.. As we all know - if the pressure is greater...

4 Replies

4231 Views

Last post by ham_machine
Sun Sep 28, 2014 1:44 pm

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