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

1079641 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

527202 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

620499 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

783555 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

364519 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

88819 Views

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

Topics

Seven barrels in a coaxial ? Volly gun concept ?

Last post by dajoro
Replies: 22
by dajoro » Wed Mar 12, 2014 6:35 pm
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Ive been researching revolver mechanisms for another project and saw an OLD volly gun
with seven barrels. Now I searched here but found nothing. Why...

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I've been too busy with life to finish my hammer mechanism , but I made this update incase someone is interested.

Re-worked pump and chamber...
22 Replies

11426 Views

Last post by dajoro
Fri Apr 04, 2014 3:59 pm
Planning a build, quick question.

Last post by sudpuzzer
Replies: 1
by Pilgor » Fri Apr 04, 2014 3:00 am

First post

I'm in the planning stage of a build, and have a quick piston valve question. I want to keep the piston as light as possible, but want it to work...

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Are you using this piston inside of a tee fitting? If that's the case, have a look at my piston valve from my hybrid.

For a pneumatic, you don't...

1 Replies

2120 Views

Last post by sudpuzzer
Fri Apr 04, 2014 1:55 pm
Is this a bad idea?

Last post by vng21092
Replies: 4
by vng21092 » Thu Mar 27, 2014 9:07 pm

First post

Hey guys so I've never built a hammer valve before and now I want to build one. I've done a little homework snooping around the site and it seems...

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I need help making a stem, I don't have any fancy metal cutting machines/tools and I can't seem to find anything that would seal off the chamber. I...

4 Replies

2268 Views

Last post by vng21092
Sat Mar 29, 2014 11:49 am
How to make a bolt action?

Last post by jackssmirkingrevenge
Replies: 6
by hydrolyzer » Mon Mar 24, 2014 10:36 pm

First post

Hi guys, I've been searching the forum for a month trying to sort out how to assemble what I'm going for. Hopefully one of the more experienced...

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That was exactly my question!

*phew*

didn't want to sound like I was treating you like a simpleton :)

6 Replies

3320 Views

Last post by jackssmirkingrevenge
Thu Mar 27, 2014 4:57 am
dart rifle idea, do me a favor and look at the last post

Last post by Gippeto
Replies: 36
by dart guy » Tue Sep 10, 2013 6:31 pm
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this is my new idea for a spud gun.
specifications i am looking for are:
1/2 copper barrel
airtank that holds enough air for 3-5 consecutive shots
a...

Last post

what would make a good chamber for pressures that reach higher than 1000 psi.

Do you even realize just HOW vague that question is? :lol:

To be...
36 Replies

15218 Views

Last post by Gippeto
Tue Mar 25, 2014 10:38 pm
Water balloon launcher questions

Last post by MrCrowley
Replies: 1
by oakman26 » Thu Mar 20, 2014 7:52 pm

First post

I have built some 1/2 ball valve cannons to shoot paintballs and some custom foam projectiles. I have previously tried a 2 sprinkler valve cannon...

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Are there QEVs that can fill from my chamber, so I can just have a trigger valve coming out the back of the QEV? You can poke a small equalisation...

1 Replies

1281 Views

Last post by MrCrowley
Tue Mar 25, 2014 4:32 pm
how does this work

Last post by RAYZOR51
Replies: 2
by RAYZOR51 » Sun Mar 23, 2014 10:51 pm

First post

Can someone explain to me how this works?

I tried to contact the author but no luck.

What is the reason for using a tyre inflater instead of just a...

Last post

Thanks JSR

2 Replies

3389 Views

Last post by RAYZOR51
Mon Mar 24, 2014 6:51 am
Take down Sniper Rifle

Last post by RAYZOR51
Replies: 10
by RAYZOR51 » Tue Mar 18, 2014 11:34 pm

First post

Is this concept feasible?

Air pressure in bottle 700 psi via fridge compressor.

chamber size 100 mm x 13 mm.

Bore 8 mm

barrel 600 mm

Ammo 7.5 mm...

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Zeus, thanks for the invite I will take you up on that.

You are right about the No of shots. Using 700 psi and regged to 90 psi I got 7.

I also...

10 Replies

5537 Views

Last post by RAYZOR51
Sat Mar 22, 2014 7:21 am
chamber volume to barrel volume

Last post by jackssmirkingrevenge
Replies: 1
by RAYZOR51 » Mon Mar 17, 2014 5:06 am

First post

I have a 600mm barrel with an id of 8mm which works out to 30171 cubic millimetres.

Firing chamber is 100mm id of 12mm = 15085 cubic millimetres....

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cubic millimetres

:D

30.17cc vs 11.31cc

That's not much for 150 psi

1 Replies

1977 Views

Last post by jackssmirkingrevenge
Sat Mar 22, 2014 4:16 am
A Quick Pneumatic Build

Last post by PracticalProjects
Replies: 4
by PeteS » Fri Dec 20, 2013 9:34 am

First post

Nothing fancy, but I threw together this sprinkler valve pneumatic mostly with parts I had laying around. It is intended to be used with a variety of...

Last post

very nice!

4 Replies

4503 Views

Last post by PracticalProjects
Sat Mar 15, 2014 1:22 pm
First cannon

Last post by jackssmirkingrevenge
Replies: 1
by Juggernaut12121 » Fri Mar 14, 2014 6:05 pm

First post

Alright well this is my first halfway decent cannon, I built it a while ago but just got around to posting it. My actual first cannon broke and...

Last post

Not bad for a first effort, here's to bigger and better ;)

1 Replies

1756 Views

Last post by jackssmirkingrevenge
Sat Mar 15, 2014 7:54 am
Variable pump coaxial

Last post by jackssmirkingrevenge
Replies: 9
by dajoro » Sat Mar 08, 2014 3:06 am

First post

I present to you all a simple .30 caliber coaxial piston gun with floating o-ring pump and custom trigger. My intent with building any air gun is it...

Last post

The execution is different but the concept of a self-contained coaxial is there. Great stuff!

9 Replies

4377 Views

Last post by jackssmirkingrevenge
Wed Mar 12, 2014 5:45 am
Quick loading mech for coaxial?

Last post by dart guy
Replies: 2
by sagthegreat » Sun Feb 09, 2014 4:11 pm

First post

So I built my coaxial a bit to quickly to think about a reloading mech. Does this seem like a good idea? The bolt is manually moved up and down to...

Last post

sadly, I don't like your idea because without an air tank to fill the chamber right after the shot, it would still be better as a muzzle loader.

2 Replies

2028 Views

Last post by dart guy
Tue Mar 11, 2014 5:01 pm
Help with a coaxial

Last post by Technician1002
Replies: 3
by fractal » Thu Mar 06, 2014 5:21 pm

First post

I am building a coaxial with cooper tubes, and observating some drawings about the sistem, i noted that the piston had a controles bleeding to the...

Last post

Tiny works great. I use a drill designed to drill holes in printed circuit boards for component leads.

3 Replies

1614 Views

Last post by Technician1002
Sat Mar 08, 2014 5:03 am
Help finding a part name

Last post by maur747
Replies: 6
by maur747 » Wed Mar 05, 2014 11:51 am

First post

Hi there,
I need a basic pressure hose for a project I'm making (the one that you use hose clamps to tighten it on the hose barb).
I live in an area...

Last post

I haven't bought the hose barb yet. Should I buy a smaller one? maybe 1/4 ?

6 Replies

3171 Views

Last post by maur747
Fri Mar 07, 2014 8:49 am
pcp airgun from fire extinguisher

Last post by bladeul2006
Replies: 22
by human » Fri Jan 14, 2011 11:56 am
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Today i finished my airgun! thought i'd share it with you guys.

Tank is filled up to 14 bars using a bicycle pump, then i can shoot 20 times or so.....

Last post

the last post on this thread is from 2011 ... :P I don't think anyone will answer
22 Replies

27480 Views

Last post by bladeul2006
Fri Mar 07, 2014 4:51 am
The Goblin; a QEV paintball gun

Last post by 1nxtmonster
Replies: 5
by Xenophile » Fri Jan 31, 2014 7:07 pm

First post

photo (4).JPG Hello spudfiles. I have recently created perhaps my greatest pneumatic cannon to date! I call the beast The Goblin . As far as the...

Last post

Easy Detent system to keep your paint from rolling out of the barrel:

Screen Shot 2014-03-05 at 5.31.23 PM.png

And sorry for late reply, but...

5 Replies

6933 Views

Last post by 1nxtmonster
Wed Mar 05, 2014 5:32 pm
.5" and 1.5" Piston Valve Cannons

Last post by jackssmirkingrevenge
Replies: 3
by Trauts » Fri Feb 28, 2014 8:09 pm

First post

Hello all! I've been chipping away at these cannons for a while and they're finally operational. I decided to stay away from pvc for my first cannons...

Last post

I'm mostly wondering if my qev solution will work

Short answer is yes, you have an o-ringed piston so a super high flow pilot is not critical.

3 Replies

1908 Views

Last post by jackssmirkingrevenge
Mon Mar 03, 2014 4:50 pm
Double QEV 1"1/4 cannon

Last post by Brice
Replies: 3
by Brice » Mon Mar 03, 2014 11:15 am

First post

Hi,
I'm a new poster on spudfiles, to introduce myself a little bit : i'm from France( excuse all the mistakes, my English is far from perfect,) I'm...

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Compared to french cannons it's powerful, but compared to spudfiles' standards it's probably not so much ;)
the piston is currently made out of bolt,...

3 Replies

5593 Views

Last post by Brice
Mon Mar 03, 2014 3:39 pm
Can A Maglite take unregged co2?

Last post by jackssmirkingrevenge
Replies: 3
by sagthegreat » Sun Mar 02, 2014 10:54 am

First post

I have a maglite coaxial gun, and I was wondering if they could take unregged co2 from one of those bike filler co2 things. Co2 pressure around 800...

Last post

This had a wall thickness of 0.02 and survived 850 psi with ease.

3 Replies

3527 Views

Last post by jackssmirkingrevenge
Sun Mar 02, 2014 7:51 pm
need help with coaxial!!

Last post by jrrdw
Replies: 7
by hawktalk » Thu Feb 27, 2014 11:54 am

First post

i cant get the piston to seal when i charge the gun up. I have to put a bit of rubber of the end on the barrel and wait till it reaches 100psi the it...

Last post

how would you fix it?

Teflon tape.

7 Replies

3633 Views

Last post by jrrdw
Sat Mar 01, 2014 3:58 pm
Coaxial sentry gun

Last post by oilfieldtrash21
Replies: 4
by oilfieldtrash21 » Sat Feb 22, 2014 10:25 pm

First post

What's up guys! This is my first time posting but I've been a long time lurker. I've built a few projects from the information in this forum and it's...

Last post

That's a simplistic solution to the sentry gun idea, seems to me that will work very well for that application. I appreciate the advice. Using the...

4 Replies

2441 Views

Last post by oilfieldtrash21
Wed Feb 26, 2014 11:36 am
Really dumb QEV piston question

Last post by jackssmirkingrevenge
Replies: 5
by 1nxtmonster » Sat Feb 22, 2014 6:51 pm

First post

On a QEV with umbrella shaped piston, which way does the piston face?

Last post

I think he likes our American women and the vj! L0L

Actually I've been actively avoiding women, there are certainly a lot of fine looking ones in...

5 Replies

4118 Views

Last post by jackssmirkingrevenge
Wed Feb 26, 2014 8:16 am
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...

Last post

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

here is my rifle so far

9 Replies

5747 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

8902 Views

Last post by sagthegreat
Tue Feb 25, 2014 7:00 pm

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Pneumatic Cannons

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