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

1664416 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

753499 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

981355 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

1164478 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

465807 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

131346 Views

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

Topics

coaxial so far need some help.

Last post by hawktalk
Replies: 9
by hawktalk » Sun Dec 22, 2013 10:33 am

First post

need help with sealing surface, piston design.
because its so close to Christmas its going to be impossible to get any more materials, so this is...

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just got a load of solid neoprene rubber in as well as some ammo

here is my rifle so far

9 Replies

5922 Views

Last post by hawktalk
Wed Feb 26, 2014 6:09 am
3d Printed Parts for Multishot coaxial

Last post by sagthegreat
Replies: 16
by sagthegreat » Sat Feb 08, 2014 9:39 pm
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srry to disappoint, its not 100% 3d printed, just stuff like stock/grips/flash hider

Valve:Coaxial
Chamber Length:8 inch
Barrel Length: 24 inch...

Last post

smaller chamber is okay for light projectiles like bbs, also reduces gas consumption. also the darker piece of copper is a barrel shroud.
16 Replies

9182 Views

Last post by sagthegreat
Tue Feb 25, 2014 7:00 pm
New Compact Cheap source of HPA???

Last post by jrrdw
Replies: 3
by sagthegreat » Sat Feb 22, 2014 9:46 pm

First post

So while browsing around I found this:

It is basically an air duster can, but its rechargable and uses air instead of co2, it claims to have 200mph...

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Yea that WAS kinda cool until I looked at the price...I want my 2 minutes back!

3 Replies

18277 Views

Last post by jrrdw
Tue Feb 25, 2014 9:43 am
Ugly Blowguns

Last post by Major Collins
Replies: 9
by sagthegreat » Wed Jan 29, 2014 8:43 pm

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Is there any way to make the ugly metal blowguns look better, like maybe a 3d printed 2 piece shell?

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I love wood grips and stocks, mainly making riflestocks. You can dress up blowguns rather nicely.
My safari rifle stock and my pistolgrip rifle...

9 Replies

7123 Views

Last post by Major Collins
Mon Feb 24, 2014 6:46 am
Caselman 30 CAL air machine gun

Last post by jackssmirkingrevenge
Replies: 1
by RedAsh » Sat Feb 22, 2014 7:35 pm

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I have made some very basic guns before that worn't really all that special so I was looking online and ran into my dream build, its a 30 Cal...

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The Caselman is often discussed on the forum but I don't know if any member has actually made one. There are however plenty online who have and it...

1 Replies

10109 Views

Last post by jackssmirkingrevenge
Mon Feb 24, 2014 1:07 am
my first 5 pneumatics

Last post by jackssmirkingrevenge
Replies: 7
by Anatine Duo » Sat Feb 15, 2014 9:58 pm

First post

My first post here!

I made these back 2002-2003 (before video camera or Chrony), not a lot to go on, just knew that it was possible. Hand tools...

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Seems to be a sudden influx of Canuks about....nice to see.

Well I'm here now, it must be in the air :D

Apparently this t-shirt launcher I...

7 Replies

6120 Views

Last post by jackssmirkingrevenge
Sun Feb 23, 2014 11:38 am
First Build: Questions on Pressurization

Last post by 1nxtmonster
Replies: 5
by Suedo » Wed Feb 12, 2014 3:00 pm

First post

I am building my first cannon ever, and have decided on a barrel sealing piston design using SCH40 PVC. I have attached a hand drawn diagram of my...

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A faster pilot equals a faster piston valve, but as long as you don't use something tiny for a large piston valve (like a blowgun), it's pretty much...

5 Replies

4886 Views

Last post by 1nxtmonster
Fri Feb 14, 2014 3:42 pm
Golf Ball Howitzer

Last post by air_dannon
Replies: 11
by c497 » Tue Nov 12, 2013 9:01 pm

First post

simple breach loading air howitzer :D
it is made out of a bicycle, treadmill, satellite dish components, a sprinkler valve, and some PVC pipe. It was...

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Very cool! I envy your work surroundings (apartment living makes constructing and shooting tough :wink: ). I second a video showing the power of the...

11 Replies

7645 Views

Last post by air_dannon
Wed Feb 12, 2014 8:49 pm
A Tikhar clone.

Last post by jackssmirkingrevenge
Replies: 11
by Dig_Gil » Wed Jan 29, 2014 11:17 am

First post

Hi people! I'm a newcomer here (so I hope I'm not mistaken in the forum section :P ). Every since I've seen the Ukilliheal's paintball/battery...

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Another point worth mentioning is the fact that the exhaust port will be connected to the Bolt which is a piston where a spring will make it...

11 Replies

12135 Views

Last post by jackssmirkingrevenge
Wed Feb 12, 2014 6:25 am
My First Pneumatic Launcher

Last post by jackssmirkingrevenge
Replies: 6
by Solidtwerks » Fri Jan 17, 2014 10:59 pm

First post

image.jpg Hi, I'm new to spud files, and have been lurking for a while. This is my first attempt at making a pneumatic launcher and I have just...

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For a quick projectile, try concrrete. Saw off some uniform lengths of the pipe your barrel is made from, wax coat the insides and fill them with...

6 Replies

5238 Views

Last post by jackssmirkingrevenge
Sat Feb 08, 2014 8:28 am
Need some ideas

Last post by jackssmirkingrevenge
Replies: 2
by vng21092 » Fri Feb 07, 2014 1:19 pm

First post

I was a little bored and I figured I haven't built anything in a while so I whipped up a quick QEV build,

Now, I had this idea to switch out the...

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Would 1'' PVC x 6 inches be the most efficient since its a 1:1 ratio? I will be shooting 1/2'' marbles.

It depends on the pressure you are using,...

2 Replies

1449 Views

Last post by jackssmirkingrevenge
Sat Feb 08, 2014 8:15 am
Oogoo

Last post by jackssmirkingrevenge
Replies: 4
by Tipsypyro » Thu Feb 06, 2014 3:22 pm

First post

Has anyone here done any experimenting with oogoo (silicone and corn starch)? I made a piston for a 1.25 chamber out of it and it seals beautifully,...

Last post

Fascinating! Wonder how it compares to less improvised mixtures as supplied by folks like smooth-on

4 Replies

3707 Views

Last post by jackssmirkingrevenge
Sat Feb 08, 2014 8:12 am
Poor Man's Lathe (DrillPress)

Last post by Tipsypyro
Replies: 23
by Infernal2 » Thu Nov 02, 2006 8:07 pm
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(Mods feel free to move this if this should belong elsewhere)

Ok, I've got to know how you do it. As a challenge to myself I decided to forgo my...

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For an accurate circle on the drill press, start out wit a piston that's a little too large. Get a bearing in a block to mount in a vise bolted to...
23 Replies

12523 Views

Last post by Tipsypyro
Sat Feb 08, 2014 3:38 am
Cannon troubleshooting and questions

Last post by Humancarpentry
Replies: 10
by madmarcs » Sat Jan 04, 2014 6:13 pm

First post

Hello again spud files I have a bit of a challenge for you. I built a beauty of a mortar this week in an attempt to build something to give my team...

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There's no way your 8 by 1/2 chamber is big enough. If you roughly calculate, depending on ambient temperature, blah, blah, you are trying to put...

10 Replies

6650 Views

Last post by Humancarpentry
Thu Feb 06, 2014 2:18 am
High Pressure Copper Coaxial .22 Pellet Gun

Last post by Gun Freak
Replies: 28
by Gun Freak » Wed Jan 01, 2014 4:02 pm
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Here is a little video showing my new project. More pictures will follow.

Some specs:

Caliber: .22
Barrel: 36 of 1/4 OD .222 ID Brass
Chamber: ~11...

Last post

But i think the piston is affected by the cold temp. and it just freezes when i shoot..

That seems much more probable than pressure differential.
28 Replies

19648 Views

Last post by Gun Freak
Wed Feb 05, 2014 9:23 pm
elevation adjustment

Last post by kydavies
Replies: 11
by kydavies » Sun Nov 24, 2013 2:08 pm

First post

I hate to go fishing but Im looking for ideas on an elevation adjustment system for the cannon/carriage posted below

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its comming. im headed to the dump tomorrow and il see if i cant find some bike gears and chain for a proper elevation adjustment. Unfortunately my...

11 Replies

8151 Views

Last post by kydavies
Mon Feb 03, 2014 10:14 pm
QEV 6mm Sniper

Last post by 1nxtmonster
Replies: 41
by 1nxtmonster » Wed Nov 20, 2013 4:19 pm
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**EDIT** I have assembled the rifle's internals and given it a bolt action system.

P1030595.JPG

Planning on building an airsoft sniper using this...

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@ bravootome - my hop up right now is very gently rubbing the bb, not really much at all.

@ lazyboy - The tank is about 3/4 empty, and I've done 400...
41 Replies

17721 Views

Last post by 1nxtmonster
Sun Feb 02, 2014 9:05 am
Barrel/transfer port

Last post by Filippo.san
Replies: 7
by Filippo.san » Thu Nov 07, 2013 3:43 am

First post

Hi everyone,
I'm working on a new project of a multishot pcp with hammer valve.
I'm thinking of buying a .22 (also .25 would be good) barrel...

Last post

thank you very much

7 Replies

5738 Views

Last post by Filippo.san
Sat Feb 01, 2014 7:33 pm
what size qev

Last post by jsefcik
Replies: 11
by jsefcik » Wed Jan 29, 2014 7:25 pm

First post

This is probably a useless post but i have a 3/4 and 1 1/2 qev,,,and i got a 1 1/4 barrel for d batteries

Which qev would be more ideal?

I was...

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Makes sense,,,the 1 1/2 qev is set up mainly for golf balls and i got the 3/4 for free so might as well have some fun with it,,pvc is cheap,

Thats...

11 Replies

4880 Views

Last post by jsefcik
Fri Jan 31, 2014 10:41 pm
unfinished projects, your opinions? 6mm rifles

Last post by fenrir
Replies: 2
by TheNewKid22 » Mon Jan 07, 2013 4:06 am

First post

Happy new year guys javascript:emoticon(':)')

i'm doing some re-visiting to some unfinished projects from last year and i'm keen to get them...

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Any pics would help.

2 Replies

1770 Views

Last post by fenrir
Thu Jan 30, 2014 5:45 pm
22mm ball and burst valve cannon

Last post by bravootome
Replies: 2
by cfb_rolley » Wed Jan 29, 2014 8:53 pm

First post

whipped this cannon up out of some spare parts a couple days ago, operates by filling the cannon with a burst disc loaded to less than bursting...

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it looks like hatsan 125 that i want to purchase, and very nice way you paint it !

2 Replies

2993 Views

Last post by bravootome
Thu Jan 30, 2014 8:51 am
looking for critic

Last post by jackssmirkingrevenge
Replies: 5
by spudhead » Mon Jan 27, 2014 3:56 pm

First post

this will be my first completed homemade air rifle. i think i will use a air chuck for a pilot valve for now. i am going to try to set it up as a...

Last post

do you mean the initial fill from zero psi?

Yes, unless you fill from the pilot side.

5 Replies

3338 Views

Last post by jackssmirkingrevenge
Wed Jan 29, 2014 5:38 am
All Steel and Brass Ball Valve Gun

Last post by Jose Arcadio Buendia
Replies: 3
by Solidtwerks » Fri Jan 24, 2014 1:49 pm

First post

This is my second build, and it's all galvanized steel and brass. Operating pressure is currently 120 psi, because that's the highest my mini...

Last post

Looks nice. In the future, if you want to upgrade the ball valve get a quick exhaust valve. They are inexpensive and have one of the best opening...

3 Replies

2670 Views

Last post by Jose Arcadio Buendia
Fri Jan 24, 2014 6:58 pm
Any suggestion on my last rifle?

Last post by jakethebeast
Replies: 5
by rulof87 » Tue Jan 21, 2014 12:13 pm

First post

in the comments of this video they told me :
With the air from one shoot you could of shoot 5-6 -7 times and have same power. you need an automatic...

Last post

How about just modding the original pilot valve he has?

Add a seal for it so that immediately when its pressed it seals up again, should still pilot...

5 Replies

3296 Views

Last post by jakethebeast
Tue Jan 21, 2014 5:53 pm
Best (or cheapest and easiest) way to regulate a 20oz CO2

Last post by Humancarpentry
Replies: 17
by Humancarpentry » Fri Dec 20, 2013 3:35 am
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I am building a pneumatic cannon using a modded sprinkler valve and schedule 40 PVC rated to 175psi. As I will use it to launch paintball grenades at...

Last post

I'll likely encase the grenades in a very simple cardboard sabot. With my old combustion cannon, I just used a dixie cup, which worked well. Most...
17 Replies

20154 Views

Last post by Humancarpentry
Sun Jan 19, 2014 6:39 pm

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