Pneumatic Cannons

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Announcements

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...

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

905692 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

441445 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

388688 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

618519 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

328774 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

78560 Views

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

Topics

[WIP] Triggered Ball Valve Musket

Last post by jackssmirkingrevenge
Replies: 36
by Xamllew » Sat Dec 10, 2016 8:29 pm
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Hello folks. Just started my first serious airgun build with the end goal of a nice handy, slim, and portable gun to trek around the woods and plink...

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Looking great! I feel that the power will rival that of a genuine black powder flintlock pistol.
36 Replies

21603 Views

Last post by jackssmirkingrevenge
Wed Oct 11, 2017 6:26 am
Sprinkler valve closing question

Last post by hectmarr
Replies: 9
by aaronwhiting77 » Wed Sep 27, 2017 9:53 pm

First post

Hi, I'm a 5th grade teacher trying to make a cheap paper rocket launcher with all metal (safe). I'm wondering how to make an electric sprinkler valve...

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The simplest thing is to entertain an air storage chamber, the amount you want to use at each launch. This camera has to have a stopcock at the...

9 Replies

3279 Views

Last post by hectmarr
Tue Oct 03, 2017 8:23 pm
QEV 200bar helium canon

Last post by matti
Replies: 10
by per-i » Fri Sep 29, 2017 9:11 am

First post

Hi all,

i am new to this forum but i must say i read a lot of interesting ideas. I am designing a helium powered cannon for small particles. These...

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Wow great. Always handy to have somebody that also uses metric. Not that imperial is an issue, but i can always convert things. But it sometimes is...

10 Replies

6165 Views

Last post by matti
Mon Oct 02, 2017 10:56 am
Coax steel bb gun

Last post by jackssmirkingrevenge
Replies: 5
by TheCisco_kid » Fri Sep 22, 2017 8:19 pm

First post

This is the second coaxial gun I've made, and this one is all metal except for a couple of jb epoxy welds.

The barrel is 1/4 steel brake line...

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Well I think it's quarter inch outer diameter, which, in this case gives the barrel an inner diamter thats just a bit larger than .177 cal.

Ah, I...

5 Replies

2793 Views

Last post by jackssmirkingrevenge
Thu Sep 28, 2017 4:17 am
My ballistic pendulum diy.

Last post by jimmy101
Replies: 6
by below_cho » Sat Sep 23, 2017 7:50 am

First post

My ballistic pendulum diy.
test video:

Last post

To be fair, using a ballistic pendulum just steps you back a couple hundred years in technology.

6 Replies

3204 Views

Last post by jimmy101
Mon Sep 25, 2017 12:29 pm
Pneumatic breech-loaded cannon

Last post by Sear
Replies: 52
by Sear » Fri Dec 23, 2016 9:04 am
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This is my 37mm cannon in construction. HPA system operating at 10-50 bar is not yet installed, it will be held under the barrel. It contains EM...

Last post

That's nice idea, Jack! If we decide that registering hits is limiting factor for our vehicle, arduino with piezo sensors in your suggested package...
52 Replies

21024 Views

Last post by Sear
Tue Sep 19, 2017 7:40 am
Yet Another Vacuum Cannon and materials selection

Last post by jackssmirkingrevenge
Replies: 14
by nik282000 » Thu Feb 02, 2017 4:53 pm

First post

Hi guys, I am on the quest to put a Ping Pong ball past mach 2 and this forum has a lot of great info.

To start, I am already getting speeds right...

Last post

They also wouldn't have the potential to perforate the garage after hitting a target, all of my shooting is done indoors (noise and living in the...

14 Replies

9079 Views

Last post by jackssmirkingrevenge
Mon Aug 28, 2017 4:38 am
Anyone know how this things valve works.

Last post by jackssmirkingrevenge
Replies: 1
by Dr Krieger » Sat Aug 26, 2017 4:06 pm

First post

Hey guys, a little while back I stumbled upon this thing. I'm wondering how the valve on this thing works. My best guess is some internal QEV. I hope...

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Looks like a thumb trigger, my guess would be internal QEV too:

1 Replies

1509 Views

Last post by jackssmirkingrevenge
Sun Aug 27, 2017 2:48 pm
Balanced UnBalanced Piston

Last post by airatomic
Replies: 20
by airatomic » Fri Jul 14, 2017 3:42 am
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Hello,

Does anyone know, in this scenario, will the piston move to the right, or remain stationary (as in QDV)?

balanced_unbalanced_piston.jpg

Last post

Thats much clearer. Thanks for diagram, JSR. That's quick. The legend lives on.

Now this is a clever alternative to my previous one. I like the part...
20 Replies

8921 Views

Last post by airatomic
Mon Aug 21, 2017 9:21 pm
Bait Cannon, Help Needed

Last post by jackssmirkingrevenge
Replies: 23
by baitcannon » Wed Jul 19, 2017 11:05 pm
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Hey guys, newbie here.....

Long story short, I'm looking to design a bait cannon.

I need some input on where to start in terms of size. I'm looking...

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Even though my gasket isn't perfectly cut, I think that when it starts to compresses as pressure builds, it is squeezing itself larger and sealing to...
23 Replies

10685 Views

Last post by jackssmirkingrevenge
Sat Aug 12, 2017 5:51 am
QEV, slide valve, SPR A1

Last post by hectmarr
Replies: 15
by kevin-db » Mon Jul 31, 2017 7:08 am
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stocks.PNG

Hello, this is my second work since I posted it last time.
(If it includes the failure, it is the third one.)

The improvement of this...

Last post

ok. Nice job and versatile. regards
15 Replies

7699 Views

Last post by hectmarr
Mon Aug 07, 2017 9:39 pm
Why does this guy's automatic air cannon have 2 valves?

Last post by jackssmirkingrevenge
Replies: 1
by Chauvo » Mon Jul 31, 2017 11:37 pm

First post

From what I understand, the bb with a spring near the trigger is what makes it automatic... So what is the purpose of the sprinkler valve?

Last post

The sprinkler valve is the main valve but it needs to be piloted to fire. By having a pop-off valve as the pilot, it will be piloted at certain...

1 Replies

1980 Views

Last post by jackssmirkingrevenge
Tue Aug 01, 2017 6:46 pm
Recoilless air cannon, possible?

Last post by jackssmirkingrevenge
Replies: 12
by Alex345 » Mon Dec 26, 2016 2:53 pm

First post

I'm thinking about building a launcher that can lob large projectiles from the shoulder with the least amount of recoil possible.

I know that...

Last post

Why not just use the launcher itself as the countermass :D As silly as it sounds, this is exactly what the Germans did with the SG500 Jägerfaust ....

12 Replies

23106 Views

Last post by jackssmirkingrevenge
Tue Aug 01, 2017 6:18 pm
Wacky Breechloading Launcher

Last post by Dig_Gil
Replies: 10
by Dig_Gil » Wed Sep 14, 2016 6:25 pm

First post

Developing from my last original post about coaxial launcher concerns, I've came up with an interesting concept I want to share. I'm not sure I will...

Last post

So, I had a someone PM me about this launcher, so I went to iterate over it again. This new version is more compact, can work with simpler lockwork...

10 Replies

21443 Views

Last post by Dig_Gil
Tue Aug 01, 2017 5:24 am
Vortex Cannon Using Piston Valve [IN PROGRESS]

Last post by jackssmirkingrevenge
Replies: 1
by DiegoJRR » Mon Jul 24, 2017 2:02 pm

First post

Hi guys,

This is my first time in these forums and I love them, you really have plenty of useful information here.
I am planning on building a...

Last post

Welcome, have a look at this recent post for some advice

1 Replies

1318 Views

Last post by jackssmirkingrevenge
Thu Jul 27, 2017 3:39 am
Large bore (3 inch PVC) field gun

Last post by jackssmirkingrevenge
Replies: 8
by Cthulhu » Tue May 16, 2017 8:07 pm

First post

I'm attempting to design a large bore field gun for paintball and I'm running into a few major design concerns.
I think that the use of a paintball...

Last post

will there be a noticeable moment of time before the nichrome gets warm enough to melt the mylar enough?

With a strong enough battery the right...

8 Replies

4371 Views

Last post by jackssmirkingrevenge
Tue Jul 25, 2017 8:36 am
First part of my first real build acquired

Last post by jackssmirkingrevenge
Replies: 3
by Bando_Red » Tue Jul 18, 2017 11:08 pm

First post

A .45 percussion pistol barrel. Measures about 10.5 inches overall, roughly 8 inches muzzle to breech. Haven't measured the bore exactly because I...

Last post

I'm not sure how active the forum still is, but I'll try to upload my sketches soon for any commentary

Not as much as it used to be but you'll get...

3 Replies

2004 Views

Last post by jackssmirkingrevenge
Fri Jul 21, 2017 8:35 am
Nerf Rocket Launcher

Last post by jackssmirkingrevenge
Replies: 1
by Cjf » Sun Jul 16, 2017 7:24 pm

First post

I'm attempting to build a Nerf rocket launcher for my 11 year old brother. I had made a pneumatic launcher with a sprinkler valve and a 1 barrel when...

Last post

For a gentler acceleration, what you want is a longer barrel. If your valve opens faster, note that even at lower pressure it will tend to damage the...

1 Replies

1657 Views

Last post by jackssmirkingrevenge
Thu Jul 20, 2017 5:11 am
Lil' Shatterhand buildlog

Last post by Xamllew
Replies: 122
by Brian the brain » Tue Aug 20, 2013 2:32 pm
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I've been dorment for too long..

I got the itch again after my son fired Old Shatterhand , my multishot PCP..I decided to build one for him.

For...

Last post

This piece is a big inspiration to me. Such an awesome one of a kind air musket.
122 Replies

51884 Views

Last post by Xamllew
Thu Jul 13, 2017 9:21 am
12 co2 airguns?

Last post by Baldyforks
Replies: 2
by valin » Sat Jul 16, 2016 2:11 pm

First post

Hey guys new here, been researching DIY air cannons for about a week, I'm planning to design a paintball marker that uses 12g CO2, and of course I'm...

Last post

Basically youll get about 10 100psi shots from a bulb. So it can get expensive.
And no that reg is a flow reg not a preasure reg, ive been looking...

2 Replies

1985 Views

Last post by Baldyforks
Wed Jul 12, 2017 10:05 pm
Vortex Cannon design need help

Last post by jackssmirkingrevenge
Replies: 6
by cohen5538 » Tue Jun 27, 2017 8:02 am

First post

Hi
This forum is great one and I like to see that it is very active with a lot of knowlage and info.
Few days ago I wanted to understand the priceple...

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I tried to find some designs with dimensions of a simple Vortex canon. Is there any database with simple designs and dimentions?

Not really a...

6 Replies

5487 Views

Last post by jackssmirkingrevenge
Sun Jul 02, 2017 8:28 am
QDV - Piston seal leaking

Last post by Warthog
Replies: 4
by Warthog » Thu Jun 15, 2017 12:29 am

First post

I have built a test 20 mm test device with QDV. And it leaks badly.

My piston is turned from a polyamide / silon rod. The diameter of the piston is...

Last post

Thank you, now it is perfectly clear. It might be a bit more difficult to build, but very suitable for one new design, that I have in mind for this...

4 Replies

1861 Views

Last post by Warthog
Tue Jun 20, 2017 1:00 pm
Electric valve question

Last post by jackssmirkingrevenge
Replies: 3
by Joe-Tile » Wed Jun 07, 2017 4:49 pm

First post

Hello folks, first timer here. I am currently building or trying to build a series of cannons to be used for confetti in a dance recital for my wife....

Last post

Thus using the qev as the main valve now, and the electric solenoid to vent the qev opening it to blow my confetti.

Precisely. Staying with...

3 Replies

1448 Views

Last post by jackssmirkingrevenge
Thu Jun 15, 2017 4:55 am
New Member Dont know where to start!

Last post by jackssmirkingrevenge
Replies: 11
by srkhan » Sat May 06, 2017 7:23 am

First post

i am far far away from you. don't know how can i start my first project!

i am looking for help to build a Pneumatic pellet piston/ rifle inspired...

Last post

Maybe this Crosman 2240 diagram will help:

11 Replies

4097 Views

Last post by jackssmirkingrevenge
Thu Jun 15, 2017 4:45 am
QEV: Sealing Face MODS.

Last post by jackssmirkingrevenge
Replies: 5
by airatomic » Mon May 15, 2017 11:26 pm

First post

Hello.

In an attempt to overcome the QEV under 500psi limits, which I assumed is due to the fact that the sealing face will be sliced off by the...

Last post

Love the side pilot! What does it look like on the inside though?

5 Replies

2610 Views

Last post by jackssmirkingrevenge
Tue Jun 13, 2017 5:32 am

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