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...

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

906092 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

441748 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

389251 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

618724 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

328841 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

78600 Views

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

Topics

QEV and building up

Last post by jackssmirkingrevenge
Replies: 11
by KnooBill » Fri Sep 16, 2016 12:24 pm

First post

Hello, I'd like to build a pneumatic gun. It will be single shot, a strong bike pump and perhaps a PCP pump later on. As I do not have access to many...

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Would you know if it would be better to use compression or extension springs on the slide valve for fastest opening? The spring loaded slide valve...

11 Replies

8768 Views

Last post by jackssmirkingrevenge
Sun May 21, 2017 8:14 am
My QEV+Slide Valve multishots

Last post by KnooBill
Replies: 47
by encohen » Sun Mar 19, 2017 1:00 pm
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--------------any suggestions would be appreciated----------
Hey guys,

All the info is in the video if you're to lazy to read :lol:

So i've been...

Last post

Your builds have been an inspiration to improve, could you share the spring loaded trigger mechanism?
47 Replies

19014 Views

Last post by KnooBill
Thu May 18, 2017 6:37 pm
custom auto valve

Last post by hectmarr
Replies: 85
by jackssmirkingrevenge » Tue Jan 20, 2009 1:30 pm
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Just look at it go :D

After this less than succesful (in terms of power) experimentation, I decided to take a step back and examine what wasn't...

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I understand. You regulate the speed of the cycles with variation of the air flow. Good job Jack. The one who does not build an automatic and...
85 Replies

30605 Views

Last post by hectmarr
Tue May 16, 2017 6:18 pm
Automatic semi - full pneumatic system

Last post by hectmarr
Replies: 8
by hectmarr » Mon May 08, 2017 5:31 pm

First post

V4CcwST.jpeg 6C8kvWU.jpeg Hello everyone !
I have built this basic model of a system for a future weapon. It works at this present time, with...

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I'm impressed with what these soft air balls can do .... 850 fps !! A significant amount of pressure.
Very didactic animations. Truthfully, I've...

8 Replies

4097 Views

Last post by hectmarr
Mon May 15, 2017 6:13 pm
Computer duster pin fired pneumatic cannon?

Last post by jackssmirkingrevenge
Replies: 1
by slaps » Fri May 05, 2017 7:49 pm

First post

I mean, is this a thing? I'm not serious about pneumatic cannons yet, but think it will make a great summer project. Would something like this fall...

Last post

Duster cans contain very low pressure, you'll basically have something weaker than an airsoft gun.

Assuming you're in the US, in most places even a...

1 Replies

1276 Views

Last post by jackssmirkingrevenge
Tue May 09, 2017 8:43 pm
8mm pneumatic flintlock

Last post by farcticox1
Replies: 10
by pneumatic_guns » Mon Dec 28, 2015 6:25 am

First post

Here i have a simple ball valve rifle Ive made.
8mm steel balls is its ammunition. it runs at 200psi with pressure rated pvc pipe.
let me know what...

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Sweet :bounce:

10 Replies

6809 Views

Last post by farcticox1
Mon May 08, 2017 5:31 pm
Kids day conon

Last post by jackssmirkingrevenge
Replies: 6
by CBjamie » Mon May 02, 2016 6:56 pm

First post

image.jpg tennis ball canon

Last post

we nicknamed it the Growler

Slang for something else around the north of the UK :D

It uses a 24 volt magnet valve to fire.

The fluttering noise...

6 Replies

3088 Views

Last post by jackssmirkingrevenge
Wed May 03, 2017 5:58 am
Pneumatic potato acceleration unit

Last post by farcticox1
Replies: 7
by wotti1 » Thu Apr 20, 2017 4:40 am

Hi, i'm a bit new to all this.
I'm hoping this is a picture of my latest spud gun. If not could someone tell me how to upload a photo?

7 Replies

3979 Views

Last post by farcticox1
Tue Apr 25, 2017 6:40 pm
Lack of qev's in Australia

Last post by Zeus
Replies: 19
by Mitchza89 » Sun Dec 07, 2008 5:35 am
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Ok this is starting to sh!t me. I'm having absolute bugger all luck finding one of the cylinder style qev's (the same sort that BTB uses) I really...

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Well I've had one of the 3/8 output valves up to 650psi, so I daresay it'll work reasonably well.... More than enough flow for your uses too
19 Replies

8436 Views

Last post by Zeus
Tue Apr 25, 2017 5:00 am
Anyone Here Tried This Shock Pump?

Last post by jackssmirkingrevenge
Replies: 4
by Xamllew » Tue Apr 11, 2017 12:35 am

First post

Yeah sorry, another Shock pump thread.

So my last shock pump recently bit the bullet (the entire gauge cracked and fell off) so I was looking for a...

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my chamber is only 45cc

Still pretty large for a shock pump if you plan on taking it to the full pressure.

Here's a little mod I had done for...

4 Replies

3190 Views

Last post by jackssmirkingrevenge
Mon Apr 17, 2017 8:46 pm
Accuracy Issues?

Last post by jackssmirkingrevenge
Replies: 17
by vng21092 » Tue Dec 30, 2014 1:43 pm
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So I finally got around to finishing my old .177 build. I noticed my shots are really inconsistent, and I mean REALLY bad. At 10 yards I'm getting...

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A little complex but you could consider spring-loading the slide valve, so that pulling the trigger releases it...
17 Replies

12290 Views

Last post by jackssmirkingrevenge
Sun Apr 02, 2017 5:44 pm
Adhesives losing the battle with lubricants :(

Last post by jackssmirkingrevenge
Replies: 3
by air_dannon » Fri Mar 31, 2017 2:02 pm

First post

Hello All,

This is a small, not quite pen-sized, pneumatic gun that gets filled to 500 psi

I have a barrel sealing piston on this snipe stick...

Last post

It helps if you use thick rubber too, 1/4 thick will stick better than 1/8 .

3 Replies

2705 Views

Last post by jackssmirkingrevenge
Fri Mar 31, 2017 11:18 pm
Airsoft Howitzer Air Cannon Help

Last post by jackssmirkingrevenge
Replies: 10
by rescue341 » Sun Mar 26, 2017 4:45 pm

First post

Hey all

Ive been working on a howitzer for a airsoft event but have ran in to a issue or two and im not sure what to try first. The cannon is a...

Last post

I don't think your temperature concerns are an issue, but good point about forcing a cool own time to maintain fair gameplay.

10 Replies

4469 Views

Last post by jackssmirkingrevenge
Wed Mar 29, 2017 6:32 pm
.177 QEV+Slide Valve

Last post by encohen
Replies: 32
by vng21092 » Mon May 05, 2014 7:25 pm
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New QEV+Slide Valve combo, I was wondering, I removed the pin valve from the tank and I noticed that the threads inside the bottle were really close...

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thanks JSR, i thinking of getting that adapter we talked about + the tank, or the tank + a coil remote hose that can connect to the regulator on one...
32 Replies

17455 Views

Last post by encohen
Tue Mar 21, 2017 2:07 pm
Pneumatic snipe stick

Last post by jackssmirkingrevenge
Replies: 13
by air_dannon » Wed Dec 30, 2015 11:07 am

First post

snipe-stick.jpg
Finally made time to get the video together and add some silliness as well (have the sound on if you can) :roll:
Thanks again to...

Last post

“Man who cast piston from epoxy, accomplish anything.”

13 Replies

6807 Views

Last post by jackssmirkingrevenge
Tue Mar 21, 2017 6:12 am
QEV + slide valve multi shot - HELP!

Last post by encohen
Replies: 2
by encohen » Sat Mar 11, 2017 7:26 pm

First post

Hey,

I'm new to airguns and I've decided to build one.
I'm still testing for an effective setup, and was hoping you can help.

My first version was...

Last post

That's what i came up with

2 Replies

1802 Views

Last post by encohen
Sun Mar 19, 2017 1:32 pm
Supa-valve

Last post by jrrdw
Replies: 1
by FAMU-FSU » Wed Feb 08, 2017 9:49 am

First post

I'm attempting to use a supah/piston style valve for a tennis ball cannon we are making as a part of our senior design project but my team, and my...

Last post

Buy a QEV. Google QEV .

1 Replies

1729 Views

Last post by jrrdw
Wed Feb 08, 2017 5:29 pm
The Quick Exhaust Valve (QEV)

Last post by FAMU-FSU
Replies: 1
by MCRKilljoy » Thu Dec 15, 2016 8:39 pm

First post

I wrote an article about using Quick Exhaust Valves (QEVs) and converted it to a PDF to share here. I hope you find the information useful. To open...

Last post

Hey, I can't download the pdf. Anywhere else I can download it? Or can you email it to me?

1 Replies

2198 Views

Last post by FAMU-FSU
Fri Feb 03, 2017 4:50 pm
Need help on a co-axial piston

Last post by Gippeto
Replies: 11
by behnt » Sat Jan 28, 2017 1:32 pm

First post

I am building my first co-axial piston using a 3D printer and making a small one before I go big but things are just not working out. I can pressure...

Last post

It fired!

First of many, well done! :thumbright: :thumbright:

11 Replies

4330 Views

Last post by Gippeto
Thu Feb 02, 2017 5:33 pm
High Pressure QEV Air Gun

Last post by Ragnarok
Replies: 4
by MCRKilljoy » Sun Jan 01, 2017 12:43 am

First post

I improved my air gun! I made the chamber twice as big, and used galvanized pipe instead of black iron. The ammo is AA batteries, metal bar sections,...

Last post

foot/pounds are a measure of torque, not velocity.
Possibly slightly late and off-topic to answer this, but what the heck.

While this part is sort...

4 Replies

4968 Views

Last post by Ragnarok
Thu Feb 02, 2017 8:10 am
Using a HPA Tank as a Quick-disconnect Air Supply

Last post by matti
Replies: 1
by Xamllew » Tue Jan 31, 2017 12:32 pm

First post

Hey guys, I have a single charge air gun in the works, since the air chamber releases all at once I have to use a shock pump to pump it over 100...

Last post

I have used this:

No reason why it wouldn't work, just make sure you get the pressure to safe level with the reg.

1 Replies

2078 Views

Last post by matti
Wed Feb 01, 2017 2:24 am
What can I use for large ammunition (2" diameter)?

Last post by bigtoolsbigtoys
Replies: 2
by bigtoolsbigtoys » Tue Jan 24, 2017 10:52 pm

First post

Hi, folks.

I've finally finished my 9' steel cannon, but my ammunition can't handle the pressure. Potatoes turn to shards at anything over 60 PSI,...

Last post

water then freeze, sand, plaster, cement, wax. Your imagination is your limit! :mrgreen:

Thank you! I'll play around with different weights and...

2 Replies

1672 Views

Last post by bigtoolsbigtoys
Wed Jan 25, 2017 10:46 am
6mm Bolt Action Bullpup

Last post by auxiliary
Replies: 17
by django » Mon Apr 25, 2016 6:34 am
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After an eternity of not making any properly functioning guns ,I have recently constructed this 6mm Steel BB shooter Bolt Action 10 shot ,it works...

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That's definitely not junk! You should be proud of the work you put into that stock especially. So I think there might be a bit of cleverness going...
17 Replies

13956 Views

Last post by auxiliary
Wed Jan 25, 2017 7:38 am
200 Pound Farm Cannon

Last post by bigtoolsbigtoys
Replies: 12
by bigtoolsbigtoys » Wed Apr 06, 2016 11:15 pm

First post

Hi Folks,

The Short: I'd love some help with my plans for an 8ft, 3in. piston, all metal pneumatic cannon.

The Long: I've been building guns out of...

Last post

I've been trolling Spud Files since high school and have answered a lot of questions by searching through the forum.

Good luck with your project!...

12 Replies

5724 Views

Last post by bigtoolsbigtoys
Tue Jan 24, 2017 9:23 pm
Semi auto barrel/ loader ideas

Last post by Ragnarok
Replies: 1
by Creator » Mon Jan 16, 2017 9:04 pm

First post

Hey, new member that has been lurking for some time. I have a 1/4 in slide valve/qev combo and was wondering what the best semi auto type loader...

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I'd probably suggest a simple blow-forward bolt, as it's fairly reliable and works well for spherical ammunition like that, although it does increase...

1 Replies

1772 Views

Last post by Ragnarok
Thu Jan 19, 2017 8:43 pm

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