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

1666325 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

754116 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

981897 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

1164996 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

466130 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

131431 Views

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

Topics

Syringe Coax Design?

Last post by jackssmirkingrevenge
Replies: 5
by lklaussen » Fri Oct 05, 2012 9:46 am

First post

Hey guys, I haven't been on here for a while! The other day I was designing a mini pneumatic around a syringe for a small size projectile like an...

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My first pneumatics were made with balsawood endcaps held together with this stuff:

5 Replies

2622 Views

Last post by jackssmirkingrevenge
Fri Oct 05, 2012 2:07 pm
three way valve 300psi and up

Last post by POLAND_SPUD
Replies: 20
by pneumatic_guns » Fri Oct 05, 2012 1:01 am
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i was wondering if anyone on this site would know where to get a high pressure three way valve, like a website or something preferable 300psi and up?

Last post

slide valve is one option...

...but you might also look for 3 way valves on ebay but first you need to know what kind of valve you need

more on...
20 Replies

11792 Views

Last post by POLAND_SPUD
Fri Oct 05, 2012 7:17 am
PSG-1 Sniper - Pneumatic gun

Last post by jackssmirkingrevenge
Replies: 48
by Jenecplu » Thu Oct 07, 2010 2:36 pm
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Hi.

For my first time here, I would like to present my pneumatic gun. I'm french and a patator.frbb.net forum member. Sorry for my poor english ^^...

Last post

superb, looking better than ever!
48 Replies

33519 Views

Last post by jackssmirkingrevenge
Thu Oct 04, 2012 11:58 pm
12g CO2 Formula Question (4200/CV=CP)

Last post by jackssmirkingrevenge
Replies: 1
by Howzer » Wed Oct 03, 2012 6:47 pm

First post

To calculate the pressure for any non-given value, use this equation, but note that the pressure can't go above 800 PSI (the vapor pressure of CO2)....

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Here you go:

1 Replies

1703 Views

Last post by jackssmirkingrevenge
Wed Oct 03, 2012 11:35 pm
Copper QEV cannon (caution picture heavy!)

Last post by sharpshooter11000
Replies: 21
by sharpshooter11000 » Wed Apr 04, 2012 6:02 am
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Here's my copper QEV cannon, nothing new but I'm pleased with it.

Whole gun:

link

Fill and fire setup:

link

Chamber and barrel support...

Last post

Sorry, didn't notice that last post. The Breech loading is pretty solid, I was worried seeing as its copper, but it's pretty solid. I will try and...
21 Replies

17534 Views

Last post by sharpshooter11000
Wed Oct 03, 2012 2:39 am
Building a airsoft sniper rifle

Last post by waza8u
Replies: 72
by wyz2285 » Tue Aug 07, 2012 10:48 am
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Recently I got a lot of good stuff, hydraulic/pneumatic parts, etc.
So, I decided to build a airsoft sniper rifle, my objective it´s to see how...

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is this the right one?

yea that one will work fine, i bought the same one from ebay
but if your going to make the same rifle it will cost you just...
72 Replies

44343 Views

Last post by waza8u
Tue Oct 02, 2012 2:59 am
Piston Valve

Last post by jackssmirkingrevenge
Replies: 4
by UHU » Mon Oct 01, 2012 12:08 pm

First post

Hello there.

I have a little problem with the set up of the Piston Valve.

The problem is that i loose all the pressure every shot.

how can i...

Last post

If you don't want to dump all the air, don't use a piston valve.

... or use a piston valve, but use a momentary pilot valve like a hammer valve.

4 Replies

2564 Views

Last post by jackssmirkingrevenge
Mon Oct 01, 2012 11:46 pm
Metal cannon design help.

Last post by AircannonSweden
Replies: 28
by 8tonsemi » Sun Sep 09, 2012 4:48 pm
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I was wondering if anyone new of a metal type chamber that has a 1 1/2inch port on it like a scuba tank with a 1 1/2 inch port. If you find one let...

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I just came up with an idea :P Don't take this serious,i made it in like 5 minutes and if you have a question: ask

Personally I think that is...
28 Replies

8311 Views

Last post by AircannonSweden
Sun Sep 30, 2012 2:17 pm
any one got ideas on valves

Last post by ozzioutlaw
Replies: 11
by ozzioutlaw » Sat Sep 29, 2012 6:30 am

First post

Hey guys any one got any ideas on a high pressure valve for my new 800 psi rifle

Last post

Cool thanks for ya help guys ill be uploading images in a few day asoon as I go online and order everything

11 Replies

5040 Views

Last post by ozzioutlaw
Sat Sep 29, 2012 11:38 pm
Help with fittings please!?

Last post by K8TOW
Replies: 5
by joshywin » Thu Aug 23, 2012 11:26 am

First post

So I'm making a pneumatic gun using an old fire extinguisher from the tip/dump. I managed to disassemble it okay but when it came to finding the...

Last post

i have used a fire extinguisher before and i use a 3/4 black iron from the extinguisher to the sprinkler valve from mcmaster-carr.then i use brass...

5 Replies

3928 Views

Last post by K8TOW
Sat Sep 29, 2012 7:47 pm
Tennis Ball Cannon With Pics

Last post by 8tonsemi
Replies: 15
by mattyzip77 » Mon Sep 24, 2012 10:02 am
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I made this cannon a few weeks ago and I am just now getting around to posting it. The chamber is about 42 inches of 2 inch sch. 80, the barrel is 60...

Last post

Did you get a chance to try soda cans?
15 Replies

5177 Views

Last post by 8tonsemi
Wed Sep 26, 2012 5:04 pm
How to empty a fire extinguisher to use as an air tank.

Last post by jsefcik
Replies: 11
by 8tonsemi » Sun Sep 23, 2012 6:20 pm

First post

I bought a ABC fire extinguisher to use as an air tank and I was wondering how do you go about emptying and cleaning those things before getting them...

Last post

just hold it on one hand and drill a hole in the bottom with other hand and hold on tight!!!!!

11 Replies

5034 Views

Last post by jsefcik
Mon Sep 24, 2012 9:33 pm
first nerf/pneumatic sniper

Last post by ozzioutlaw
Replies: 11
by ozzioutlaw » Sat Sep 22, 2012 4:16 am

First post

hey guys first post but always on the site looking at ideas for a gun now i came up with my own. so here it is my mussel loading sniper only tested...

Last post

no but i found a great topic on here before the air tank they used was a fire extinguisher with a mig regulator good stuff :lol:

11 Replies

5441 Views

Last post by ozzioutlaw
Mon Sep 24, 2012 8:40 am
Overtightened NPT Threads

Last post by Zeus
Replies: 8
by lava98 » Tue Sep 18, 2012 11:22 am

First post

Help! I have a 1.5 pneumatic aluminum spud gun, but I think I screwed on the pipes a bit too tight... There are 3 threads left visible on the male...

Last post

Is that for both the male and the female?

almost literally welded together. Unscrewing those parts will likely destroy them.

Blah blah blah.

In...

8 Replies

3478 Views

Last post by Zeus
Fri Sep 21, 2012 7:34 pm
Pneumatic Design

Last post by jonesy42
Replies: 15
by HarriDawwg » Mon Sep 10, 2012 11:46 am
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Hey im pretty new, joined i while ago but have really been very active :S
Anywho, this is a pic of what im planning to do but just wondering if its...

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True True, i was thinking it wouldn't be to bad as it would be a small chamber therefore not to much effort to pump it, but a bigger chamber or using...
15 Replies

8662 Views

Last post by jonesy42
Wed Sep 19, 2012 1:28 pm
Need help understanding if this will work or not.

Last post by Technician1002
Replies: 5
by r84shi37 » Sun Sep 16, 2012 7:12 pm

First post

I am building my first pneumatic air cannon. I have a 4ft long, 4 inch, 40 gauge pvc pipe capped at one end and connected to a 4 x3 reducing 90...

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Just a quick note on the original design and the flow restriction. When you cut a diameter in half, the area is cut to 1/4. 4 inch to 2 inch is a 3/4...

5 Replies

1237 Views

Last post by Technician1002
Mon Sep 17, 2012 3:01 pm
First 6mm qev camo sniper rifle

Last post by jonesy42
Replies: 24
by jonesy42 » Sat Aug 25, 2012 9:32 am
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My first qev rifle, not quite finished yet,... here's a few pics

Special thanks to JSR for spoon feeding me with some
qev know-how :idea: :)

Last post

$350 would be a fair price, but if you want a PCP you'd be looking at a lot more, heck, it'd cost me about $400 just to get it in.

What about...
24 Replies

11319 Views

Last post by jonesy42
Mon Sep 17, 2012 10:20 am
2" Cartridge nerf rocket launcher

Last post by Zorlord
Replies: 10
by Zorlord » Fri Aug 17, 2012 5:40 pm

First post

Dubbed the LAWL
Shoots nerf rockets using the PVC cartridge method, with a length of pvc capped with tape with a coupler over it. Powered by a co2...

Last post

Number of shots off of one cartridge ranges from 3-6. Bursting pressure is probably between 40-80 psi? I don't have any way to measure it, so this is...

10 Replies

10427 Views

Last post by Zorlord
Sun Sep 16, 2012 9:52 pm
Golfball gun

Last post by silentkill12345
Replies: 4
by GustavssonB » Tue Sep 11, 2012 7:35 am

First post

Here is my new gun

It´s a golfball shooting QEV gun that has been taken to 8 bar pressure.

- Chamber: The chamber is a 1,25 liters extinguisher...

Last post

me gusta ;) nice gun man

4 Replies

4940 Views

Last post by silentkill12345
Sat Sep 15, 2012 1:35 pm
Help figuring out hammer valve calculations

Last post by warhead052
Replies: 10
by JDP12 » Thu Sep 13, 2012 3:38 pm

First post

I'm tryin to design a hammer valve as BTB drew here...

but im havin problems with the spring calculations. If the part of the red hammer that the...

Last post

Feel even less safe... Im in the Air Force ROTC program.. when I graduate hopefully I'll be flying fighter jets :wink:

For you foreigners- ROTC is a...

10 Replies

7364 Views

Last post by warhead052
Fri Sep 14, 2012 11:37 am
2" Piston Valve Pilot

Last post by Technician1002
Replies: 7
by shardbearer » Tue Sep 11, 2012 6:15 pm

First post

I finished a 2 Tee Piston Valve a couple weeks ago, pretty standard stuff, 1 1/2 Porting, 1 1/4 Coupler for a piston, 2 Chamber/Stock and barrel,...

Last post

Due to the physics of F=MA, a piston hitting a sudden stop with no bumper provides a hammer blow to whatever it hit. This results in broken parts...

7 Replies

2954 Views

Last post by Technician1002
Fri Sep 14, 2012 12:46 am
Shock pumps? for volume?

Last post by jackssmirkingrevenge
Replies: 1
by iknowmy3tables » Mon Sep 10, 2012 12:23 am

First post

I need a portable way of monitoring and mantaining the pressure of my AT4 currently I don't have any tire gauges on my pumps and my large pump so I...

Last post

Not a lot of effort on the stroke, but it would take you a while.

Quick and dirty calculation, let's say the pump has a stroke volume of 0.3 cubic...

1 Replies

1522 Views

Last post by jackssmirkingrevenge
Mon Sep 10, 2012 12:31 am
My first gun using QEV 20bar

Last post by archie370
Replies: 42
by GustavssonB » Mon Aug 06, 2012 1:17 pm
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This i my first try using a QEV and I´m very happy with the result:)

I´m using the gun on 8-20 Bars pressure

I´m using:
a fire extinguisher...

Last post

Oh yeah :) you must be a pretty good welder for it to be safe :) ... i thought it would be a special welder for welding stainless but obviously its...
42 Replies

24398 Views

Last post by archie370
Sat Sep 08, 2012 8:44 pm
I need help with a design

Last post by archie370
Replies: 18
by archie370 » Fri May 11, 2012 8:14 pm
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I want to build an air gun that has a short pop of air so i can have multiple shots so 5 - 7 shots before refilling and im not sure how the airgun...

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Thats exactly right buddy :) ^^ ... you have to start somewhere but you start, at a stage where you feel it is hard but not impossible and you work...
18 Replies

5637 Views

Last post by archie370
Fri Sep 07, 2012 8:17 pm
Refinements wanted

Last post by jimmy101
Replies: 8
by Penhorse » Wed Sep 05, 2012 6:41 am

First post

So it started as a casual bet between me and my brother as to who could build the best one. Here's mine.

It's pneumatic, this is at about 60...

Last post

How does one measure muzzle energy? The easiest way is to measure the muzzle velocity with a round of known mass. The muzzle energy is...

8 Replies

3780 Views

Last post by jimmy101
Thu Sep 06, 2012 3:13 pm

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Pneumatic Cannons

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