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

1193090 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

599619 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

854335 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

1015259 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

390870 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

99298 Views

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

Topics

Throwbag Cannon

Last post by Anatine Duo
Replies: 7
by Aaroneous » Thu Mar 24, 2022 12:11 pm

First post

Built this for my volunteer FD. We're going to be using it to launch a throwline over a roof and pull over an anchor rope when dealing with flue...

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More important for me is the failure mode. PVC makes sharp shrapnel, most ABS yawns or makes squared off pieces.

7 Replies

21671 Views

Last post by Anatine Duo
Sat Apr 02, 2022 7:46 pm
Looking for design feedback

Last post by Moonbogg
Replies: 1
by Aaroneous » Thu Mar 24, 2022 12:13 pm

First post

I drafted this up to shoot 3/4 potato plugs. It's different than anything I've built before, so I'd appreciate any feedback anyone can give before I...

Last post

It looks good to me. Keep us updated!

1 Replies

7418 Views

Last post by Moonbogg
Mon Mar 28, 2022 2:51 pm
A bit of Nerf fun

Last post by Moonbogg
Replies: 4
by farcticox1 » Sun Mar 20, 2022 2:41 pm

First post

Using a magazine and adapter from one of my Nerf guns I have made a bolt action magazine fed launcher, just needs painting and trigger guard making,...

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300fps is at the upper end of hardcore nerf performance. That's awesome.

4 Replies

14353 Views

Last post by Moonbogg
Mon Mar 28, 2022 2:45 pm
Looking for a design to build

Last post by farcticox1
Replies: 1
by CarGlace » Tue Mar 22, 2022 12:18 pm

First post

I'm building a robot that will go through a course and eventually shoot down some stacked cans. I was looking through some videos and the SpudFiles...

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Single shot or semi auto ?

1 Replies

3317 Views

Last post by farcticox1
Thu Mar 24, 2022 5:03 pm
Paintball Artillery Gun

Last post by Luke31
Replies: 12
by Luke31 » Wed Jun 09, 2021 11:30 pm

First post

Hello people. I would like to share a project I've been working on for awhile. Its going to be an air cannon designed as an artillery gun for...

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I decided to take a break from the artillery gun in order to build a mortar. I wanted something that I could finish sooner so I could test out my...

12 Replies

42712 Views

Last post by Luke31
Tue Feb 22, 2022 12:53 am
Latest Eclipse Defense 37mm Pneumatic

Last post by kunkmiester
Replies: 9
by Solar » Mon Oct 11, 2021 5:26 am

First post

Eclipse 37mm rifled or smooth bore straight pneumatic with variable velocity control. Positive firing pressure piston valve with 1200psi max rating....

Last post

Iknowmy3tables,

I am not really active elsewhere but will try and be everywhere once we are in production. I will also be able to share more...

9 Replies

28537 Views

Last post by kunkmiester
Mon Dec 06, 2021 4:51 pm
Electro-pneumatic Eclipse with Air-burst rounds

Last post by FighterAce
Replies: 14
by Solar » Tue Oct 12, 2021 10:22 pm

First post

Latest electro-pneumatic with automated velocity control and laser range finder. Air burst system optional. FCU has electronic pressure sensor,...

Last post

If airplanes or drones were ever used in paintball these rounds could be used as flak fire lol.

This would still be effective at blinding drones....

14 Replies

54988 Views

Last post by FighterAce
Sat Dec 04, 2021 7:40 am
Designing a inline piston pressure regulator - Fluid statics math model

Last post by hectmarr
Replies: 19
by FighterAce » Sun Nov 07, 2021 8:55 am
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Hello everyone!

I finally found some free time after finishing my undergraduate degree and I'm starting to get back into this hobby. One thing I...

Last post

By the way, your work and completion is excellent.
19 Replies

61010 Views

Last post by hectmarr
Wed Dec 01, 2021 8:00 pm
Air Cannon Design Help

Last post by Solar
Replies: 4
by Spenyescer » Sat Oct 30, 2021 6:23 pm

First post

Hello everyone!

For my university senior design project, my team has been tasked with developing a ballistic launched image recording system. I need...

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Absolutely avoid PVC for this project. Moonbog is also correct regarding the piston size. (and use of a piston valve). Sprinkler valves are usually...

4 Replies

9889 Views

Last post by Solar
Thu Nov 11, 2021 5:18 am
How far does it go!

Last post by iknowmy3tables
Replies: 7
by Americannon » Wed Sep 22, 2021 7:39 pm

First post

I just wanted to see if anyone can suggest anything for more power. I have 4 2” valves coming into a 16 foot long exhaust pipe for a barrel. All are...

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good news while it was fun to refresh my trigonometry and kinematic equations I found a projectile calculator online
as soon as you enter an initial...

7 Replies

18438 Views

Last post by iknowmy3tables
Sat Oct 23, 2021 11:02 pm
Eclipse Defense 80mm Net launch system

Last post by Solar
Replies: 3
by Solar » Mon Oct 11, 2021 5:51 am

Eclipse 80mm with remote control (wired or encrypted RF) for synchronous firing for net launch system. Four launchers launch 8lb. rounds to deploy...

3 Replies

5305 Views

Last post by Solar
Tue Oct 12, 2021 10:41 pm
opinions needed on concept

Last post by iknowmy3tables
Replies: 4
by Theonepbs » Wed Oct 06, 2021 9:00 pm

First post

idk if this is a totally new concept but its new to me I thought it up last night and have been pondering it for many hours now and was wondering if...

Last post

I see what you mean requiring positive pressure to open prevents the valve from opening every time you disconnect the air source, just need to...

4 Replies

19926 Views

Last post by iknowmy3tables
Mon Oct 11, 2021 11:14 am
Gluing schrader valve in mini coaxial

Last post by iknowmy3tables
Replies: 3
by PatchyThePirate » Tue May 25, 2021 4:33 pm

First post

I’m about to glue the schrader valve into my mini coaxial and was wondering if I should remove the rubber from around it. Would it be safer to remove...

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I used to use a belt sander to remove rubber from Schrader valve stems. I last did it to glue and clamp it to some vinyl tubing

They do make...

3 Replies

7617 Views

Last post by iknowmy3tables
Sun Sep 12, 2021 8:11 am
Tennis ball launcher

Last post by biged
Replies: 3
by farcticox1 » Tue Jun 29, 2021 6:15 pm

First post

Atempting to make a low powered tennis ball launcher, couldn't find a suitable piece of pipe for the barrel so made my own from flat piece of...

Last post

Sorry for late response, just a heads up.

2-3/4 exhaust pipe from any auto parts store has a Inside Diameter of 2-5/8ths of a inch. ($30 to $50 for...

3 Replies

13353 Views

Last post by biged
Wed Sep 08, 2021 2:50 pm
Rate my cannon

Last post by wafen
Replies: 11
by rookie builder » Sat Jul 17, 2021 11:19 pm

First post

I've been interested in building air cannons for a long time but I only recently discovered this site. I just finished building a cannon I think is...

Last post

A cool idea,and I have to say angle seat valve is excellent.
I have made sth similar

11 Replies

29221 Views

Last post by wafen
Tue Jul 27, 2021 9:59 am
The Yeet Machine

Last post by headslammer
Replies: 9
by headslammer » Tue Jan 26, 2021 4:23 pm

First post

Hey everyone!
Been lurking here for a while after discovering this place while doing research on a pneumatic cannon, finding solutions to problems,...

Last post

Anymore progress on this?

Sadly no. I had to focus on school, graduating, and now working. At some point, I'd like to get back into this hobby but...

9 Replies

24933 Views

Last post by headslammer
Mon Jun 21, 2021 10:43 am
Issues with the GGDT software

Last post by Luke31
Replies: 5
by Luke31 » Wed Mar 17, 2021 11:41 am

First post

I am trying to use the GGDT software but im having issues. I keep getting an error stating that the projectile never cleared the barrel, but I...

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Not sure how fast I am opening the ball valve. I'm guessing 100 milliseconds.

For my application, I'm shooting multiple projectiles at once(12 6...

5 Replies

12808 Views

Last post by Luke31
Thu May 13, 2021 12:09 pm
How to make an Air cannon sound cooler/louder?

Last post by Luke31
Replies: 17
by Luke31 » Sat Apr 24, 2021 1:50 pm
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Any tricks on how to make your air gun sound cooler or louder than it normally should?

My only guess is to shorten the barrel so the air is not...

Last post

Maybe a metal cone/cylinder at the end of the barrel will make the most noise. Like when you hit cymbals on a drum set.
17 Replies

40179 Views

Last post by Luke31
Sun May 09, 2021 1:50 pm
Whats best valving for pneumatics

Last post by jackssmirkingrevenge
Replies: 5
by golf45 » Sun Apr 18, 2021 6:07 pm

First post

I have built a nice little 1kg chamber golf ball launcher with QEV valve and slide release, the barrel about 13inches long with bore diameter .5mm...

Last post

Would the quickness of releasing the slide valve make any difference on a QEV to the speed of the projectile being launched.

Faster piloting means...

5 Replies

15809 Views

Last post by jackssmirkingrevenge
Fri May 07, 2021 10:47 am
Basic pneumatic cannon

Last post by Luke31
Replies: 2
by MDSpudderButter » Sun Apr 18, 2021 8:29 am

First post

Hi all. It's been quite some time since I've logged on, I like the new site layout! I just realized I only have a thread on my 4L propane cannon and...

Last post

It looks like the air flows into the handle when firing. That area basically needs to fill up with air before it can produce a force down the barrel....

2 Replies

9427 Views

Last post by Luke31
Tue May 04, 2021 12:10 pm
True formula for flow coefficient

Last post by akb
Replies: 6
by SpudUke5 » Sat Feb 23, 2008 11:41 pm

First post

Well i dont know how to use GGDT, sad i know :cry:

I have been informed that there is a page on GGDT website that can help but i havent taken a...

Last post

I designed one launcher using a Deltrol 3/4 QEV and their published Cv feeding a tennis ball barrel (SDR21 2.5). Actual performance was about half of...

6 Replies

11501 Views

Last post by akb
Sun Apr 11, 2021 9:42 am
Pressure rating for Coaxial cannons

Last post by Anatine Duo
Replies: 12
by Luke31 » Wed Mar 31, 2021 2:47 pm

First post

I was contemplating about making a coaxial type air cannon design but I had a thought about the pressure rating. We know that certain pipes has been...

Last post

has anyone here tried a 10' muzzleloader? I whine about loading a 3'

Don't get me wrong, I love the elegance of the coaxial, but after I am finished...

12 Replies

75152 Views

Last post by Anatine Duo
Tue Apr 06, 2021 8:14 pm
Butterfly Valve- How to Quickly Open

Last post by Moonbogg
Replies: 1
by duwem » Tue Apr 06, 2021 10:58 am

First post

Guess the pumpkin guys use butterfly with large springs or pneumatic cylinders to open them fast. I can’t find pictures of this. Anyone have any or...

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I found a video of one that uses a cylinder.

I'm thinking just yanking it open might be fine as well. I think it might depend on the size of the...

1 Replies

4330 Views

Last post by Moonbogg
Tue Apr 06, 2021 3:55 pm
Unusual Ammo and Barrel Construction

Last post by jackssmirkingrevenge
Replies: 16
by Lockednloaded » Wed Mar 03, 2021 12:45 pm
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Hi all,

I’ve been away from the forums for a while, but have definitely been tinkering with some old and new projects!

I’m back asking for thoughts...

Last post

I almost forgot how satisfying a successful launcher is!

Nothing keeps you in this hobby better than seeing the fruit of your labor launch...
16 Replies

44424 Views

Last post by jackssmirkingrevenge
Tue Mar 23, 2021 9:18 pm
Supersonic baseball cannon - For real

Last post by jackssmirkingrevenge
Replies: 2
by evilvet » Fri Mar 19, 2021 11:35 pm

First post

It's been a long time since i was here, Oz laws on what is and is not a firearm pushed me out.
YouTube served this up today and i thought it might be...

Last post

Great to see you're still around and boooooooooooooo!!! to Aussie gun law :(

That was a great watch. this almost made me tumescent.

2 Replies

8659 Views

Last post by jackssmirkingrevenge
Tue Mar 23, 2021 7:07 pm

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