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

618824 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

343300 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

291892 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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First post

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

536806 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

281163 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

66443 Views

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

Topics

2 Stage Pressure Release During Firing

Last post by jackssmirkingrevenge
Replies: 1
by duwem » Wed Jan 13, 2021 8:49 am

First post

Building a cannon, trying to get the most distance out of it. Projectile will be foam stress balls.

My thought was to have 2 tanks, one would be...

Last post

Welcome to the forum!

Are you thinking of an air powered version of the Vergeltungswaffe 3 ?

If so, I think it's an unnecessary complication....

1 Replies

4020 Views

Last post by jackssmirkingrevenge
Thu Jan 14, 2021 6:46 am
I'm back!

Last post by hectmarr
Replies: 37
by PracticallySane » Tue Nov 24, 2020 7:37 pm
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Hey guys, its been a very long time. I previously used the name *###* I lost access to my account and it seems I'm sol as far as recovery is...

Last post

Add what was missing to get the valve closed automatically. It works correctly, luckily. The valve closes when you let in compressed air and the...
37 Replies

56339 Views

Last post by hectmarr
Mon Jan 04, 2021 6:10 am
metal pipe gun

Last post by hectmarr
Replies: 1
by Exclaim4 » Fri Jan 01, 2021 12:07 pm

First post

The bullets are 15 millimeter fishing sinkers covered in duct tape. The tape makes the pressure build up when the bullet tries to enter the barrel...

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Cute! I like the kick it gives, I guess you can take down an aggressive secret girlfriend dad with that. :twisted: Tell us a little more about how...

1 Replies

4938 Views

Last post by hectmarr
Fri Jan 01, 2021 2:25 pm
My first working pengun- ammo questions...

Last post by SloppyJoeES
Replies: 15
by SloppyJoeES » Wed Dec 16, 2020 7:00 pm
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I have finally completed a simple coaxial pengun, yet another copy of a copy of JSR's design from so long ago. I'm very happy with it!...

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:D Okay I have all my new components! Unfortunately though, since my piston's seal has already worn out, I cannot shoot the new ammo quite yet.

For...
15 Replies

57427 Views

Last post by SloppyJoeES
Wed Dec 23, 2020 12:13 am
Size and Volume of Pressure tank

Last post by jackssmirkingrevenge
Replies: 1
by valir05 » Wed Dec 02, 2020 3:05 am

First post

Hi guys. I was wondering how you determine the size and volume of the pressure tank. I was gonna use a tennis ball and unleash it a 75-80 mph but i...

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Download Gas Gun Design Tool here , you can simulate the parameters of your launcher before building so you can get a reasonable idea of what the...

1 Replies

3801 Views

Last post by jackssmirkingrevenge
Wed Dec 02, 2020 6:11 am
Tilted valve allowing greater flow?

Last post by jackssmirkingrevenge
Replies: 1
by Luke31 » Thu Nov 26, 2020 2:11 pm

First post

I stumbled across this valve while going through MyAirCannons.com videos. Its a tilted valve that's supposed to allow better air flow.

Manufacturers...

Last post

You will get smoother flow but whether it actually translates into visibly greater power is debatable with all other factors being equal.

It would...

1 Replies

2486 Views

Last post by jackssmirkingrevenge
Thu Nov 26, 2020 2:20 pm
Yet another QEV and 3/2 valve cannon

Last post by jackssmirkingrevenge
Replies: 5
by Xenophile » Sat Sep 19, 2020 6:09 pm

First post

Overview of FS resized.jpg My latest creation. As the title suggests, I using a QEV and 3 position 2 way valve with a 300 psi input from a regulated...

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You can even see when I began to run out of air!

we can!

:D

Nice work!

5 Replies

18358 Views

Last post by jackssmirkingrevenge
Thu Nov 26, 2020 11:56 am
Interesting stuff from the internet...Huben K1

Last post by jackssmirkingrevenge
Replies: 3
by Gippeto » Sun Aug 14, 2016 1:24 pm

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Looking around and came across patent drawings for the K1. Looked like a toolies piston held by a sear... which caught my interest and spurred...

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I recently started looking at this mechanism again and it really is quite interesting.

This is the manufacturer's animation:

I made my own...

3 Replies

8660 Views

Last post by jackssmirkingrevenge
Sun Nov 22, 2020 1:16 pm
PVC Primer/Glue says DO NOT TEST WITH AIR

Last post by D_Hall
Replies: 8
by Luke31 » Wed Oct 28, 2020 7:19 pm

First post

When I saw it on the back of the can, I wasn't sure what to make of it since so many people online were building air cannons using PVC. There are...

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I looked at the GGDT program and it doesn't appear to have an option to calculate the maximum range in which it will be able to fire which is in my...

8 Replies

21125 Views

Last post by D_Hall
Sun Nov 08, 2020 3:58 pm
Mechanically actuated quick dump valve

Last post by jackssmirkingrevenge
Replies: 4
by Labtecpower » Mon Oct 26, 2020 4:55 am

First post

To get myself to build some stuff again I decided to slap a cannon together in my lunch break, with all designing and calculating done on the fly.
I...

Last post

I'm currently designing a big bore (9mm) piston hybrid, with on-board air and fueling. I should be able to get quite some shots from a 200cc...

4 Replies

17694 Views

Last post by jackssmirkingrevenge
Thu Oct 29, 2020 6:44 am
Coaxial Piston Cannon Troubleshooting (no air pressure)

Last post by jackssmirkingrevenge
Replies: 3
by Rocky44hunt » Tue Oct 20, 2020 9:11 pm

First post

Hello - I recently set out to build my son this cannon:

Well, now I can't get it to hold air it seems:

I followed all of the steps in the...

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If the piston is too loose in the housing the most simple solution is wrapping electrical tape on the front and back of the piston until it is snug....

3 Replies

9918 Views

Last post by jackssmirkingrevenge
Thu Oct 29, 2020 6:29 am
Concerning video of a Piston Valve Cannon bursting

Last post by farcticox1
Replies: 10
by Luke31 » Tue Oct 20, 2020 8:09 pm

First post

I came across this video of a piston valve air cannon bursting.

All of the pipe appear to be schedule 40, they even said it only had 90 PSI in...

Last post

PVC is not rated for gas pressure so no surprise, some of the older water lines in the plant I work in have failed with 40psi of water in them, and...

10 Replies

9615 Views

Last post by farcticox1
Sun Oct 25, 2020 7:42 am
Exhaust value with decent trigger feel

Last post by Tipsypyro
Replies: 3
by Boomerang » Thu Aug 20, 2020 4:21 pm

First post

New site looks great! Come a long ways since the SpudTech era!!

At any rate, playing around with a piston build for the first time in a decade. I've...

Last post

The pressure release button from a tire inflator has a short stroke and s solid feel, and lends itself well to all kinds of trigger linkage...

3 Replies

7064 Views

Last post by Tipsypyro
Mon Oct 12, 2020 1:38 am
Ideal Gasket Material?

Last post by jackssmirkingrevenge
Replies: 1
by Boomerang » Fri Sep 04, 2020 3:52 pm

First post

What is the best material for a barrel sealing gasket? Looking to play in the 100-200 psi range. Do I want something really soft like silicon?...

Last post

Truck tire inner tube is an excellent source.

1 Replies

2717 Views

Last post by jackssmirkingrevenge
Wed Oct 07, 2020 4:16 pm
Supersonic baseball cannon on 'Smarter Every Day'

Last post by jackssmirkingrevenge
Replies: 2
by Skywalker » Mon Sep 07, 2020 12:11 am

First post

They built a balanced piston valve. Very heavy-duty steel, they've run it as high as 500psi. The barrel is evacuated before the shot. There's a nice...

Last post

It's the ultimate pneumatic cannon and pushes the performance to the extreme by doing a variety of special things to get there.

I wonder why they...

2 Replies

9077 Views

Last post by jackssmirkingrevenge
Wed Oct 07, 2020 3:59 pm
12g CO2 Adapter

Last post by Solar
Replies: 1
by Boomerang » Wed Aug 26, 2020 2:00 pm

First post

Anyone care to recommend a specific 12g CO2 adapter? Bonus points for being American made.

Thoughts on using a bicycle 12g adapter and a schrader...

Last post

Tap an 1/8 NPT and get an ASA adapter that will thread into it from www.palmerspursuit.com then get a regular paintball style with ASA threads.

1 Replies

6793 Views

Last post by Solar
Tue Sep 08, 2020 12:50 am
Valve jam with liquid gas

Last post by wyz2285
Replies: 13
by wyz2285 » Fri Aug 28, 2020 4:47 am

First post

So I have been toying around the idea of using propane with solenoid valves and piston valves. However the valve jams every few shoots. The o-rings...

Last post

I'll get some photos

13 Replies

21103 Views

Last post by wyz2285
Wed Sep 02, 2020 3:28 am
Calculations related to pneumatic cannon.

Last post by D_Hall
Replies: 9
by valir05 » Tue Jun 02, 2020 2:49 am

First post

I am doing a school project regarding a pneumatic cannon which able to shoot baseballs. Unfortunately, i could not find any starting calculations to...

Last post

Probably the quickest/easiest hand calcs you can do for potato gun prediction....

EndPressure = StartPressure * ChamberVolume / (ChamberVolume +...

9 Replies

60213 Views

Last post by D_Hall
Sun Jul 26, 2020 1:30 am
MJVO-3 venting air from the sides

Last post by farcticox1
Replies: 6
by Xenophile » Fri Jul 17, 2020 5:36 pm

First post

Hello Spudfiles! I've been working on a new cannon which uses a QEV piloted by a Clippard MJVO-3. Unfortunately during my initial pressure test at...

Last post

If the QEV is good it has to be that valve.

6 Replies

27046 Views

Last post by farcticox1
Sun Jul 19, 2020 2:29 pm
"Sabotless" Semi-Automatic Shotgun Concept

Last post by Doc j
Replies: 18
by jackssmirkingrevenge » Sat Feb 23, 2019 9:03 am
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An idle thought that is basically the unholy marriage of a nailgun and paintball marker:

The benefit is that it will fire whatever fits in the...

Last post

Gettin lost in
What proposed to do.
If drive piston quik.
Would this work.

Disregard.
Force output would be significantly less.
Guess at :
If...
18 Replies

44172 Views

Last post by Doc j
Mon Jun 29, 2020 4:02 am
QEV CO2 valve

Last post by jackssmirkingrevenge
Replies: 1
by keks2033 » Mon Jun 15, 2020 2:05 pm

First post

Hello everyone. I made a new valve, it will work on CO2. How it looks inside can be seen in the diagram. The turner made the blue part for me on the...

Last post

The turner made the blue part for me on the machine

Very cool!

I think it is time for you to get your own machine and become a turner yourself ;)

1 Replies

12306 Views

Last post by jackssmirkingrevenge
Fri Jun 19, 2020 5:56 pm
Browning Airstar 200

Last post by jackssmirkingrevenge
Replies: 4
by hectmarr » Tue Jun 09, 2020 4:11 pm

First post

I am struck by this spring compressed air weapon, which compresses the spring with an electric motor and reduction gears, using a chain similar to...

Last post

I have often wondered why the electric airsoft guns didn't use a sear. It would give the trigger a more realistic feel, completing the firing cycle...

4 Replies

22739 Views

Last post by jackssmirkingrevenge
Fri Jun 12, 2020 5:45 am
I found a gatling cannon

Last post by Spud33
Replies: 3
by kunkmiester » Mon Mar 02, 2020 8:44 pm

First post

Not exactly like how I want to make it, but glad to see I'm not the only one that likes the crazy stuff.

Last post

that's a nice one

3 Replies

6846 Views

Last post by Spud33
Tue Jun 02, 2020 11:49 pm
question about valves

Last post by jackssmirkingrevenge
Replies: 3
by Backspace » Tue May 05, 2020 3:13 am

First post

hello everyone

i'm going through my first built of a spudgun, and i'm gathering the parts and doing research. I'm gonna use a 75mm barrel, but the...

Last post

127mm or 12.7mm

Good catch, edited.

3 Replies

32224 Views

Last post by jackssmirkingrevenge
Tue May 19, 2020 3:42 am
PNEUMATIC GUN WITH VALVE QEV

Last post by keks2033
Replies: 5
by keks2033 » Mon Nov 19, 2018 2:50 am

First post

Made a gun of 40 mm caliber, used a piston valve. The gun works well at pressures up to 20 atm, no longer possible, because the rubber on the piston...

Last post

A few days ago, I managed to make and test a piston valve with a caliber of 40 mm. I managed to make an exit into the barrel with a diameter of 14...

5 Replies

11063 Views

Last post by keks2033
Sat May 16, 2020 2:12 pm

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