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

1666052 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

754012 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

981812 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

1164928 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

466076 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

131415 Views

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

Topics

qev question

Last post by jackssmirkingrevenge
Replies: 7
by madmarcs » Sat Nov 24, 2012 6:23 pm

First post

Hello spudfiles i just have a quick question about a valve that I bought. My understanding of qevs is that they have a small spring inside them to...

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If you're pressurising the system from the pilot side, there is no need for a spring. If on the other hand you're filling from the chamber side, you...

7 Replies

2609 Views

Last post by jackssmirkingrevenge
Mon Nov 26, 2012 3:19 am
Piston shotgun build help

Last post by Marffy
Replies: 14
by Marffy » Mon Nov 19, 2012 12:05 am

First post

Its been a while and i'm thinking of making a new gun. I wanted to make a shotgun type co-axial? piston gun. With a 3/4 steel tube and a schrader...

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It's just a support, look for something that fits the OD of the barrel, and the ID of the chamber. A cotton reel is one idea, but there's heaps you...

14 Replies

7738 Views

Last post by Marffy
Sun Nov 25, 2012 4:17 pm
A new sentry gun project

Last post by POLAND_SPUD
Replies: 21
by evilvet » Sun Oct 21, 2012 12:49 am
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Evening all.

Well, I finally did it; quit my contract job and giving myself six months long service leave. I have the entire summer off, probably...

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yup electronics is sure awesome - some sensors and coding and you've got a machine that does wonders...

ohh BTW I really like this app>
awesome...
21 Replies

7586 Views

Last post by POLAND_SPUD
Thu Nov 22, 2012 1:28 pm
Russian pneumatic shuttlecock gun

Last post by jackssmirkingrevenge
Replies: 2
by Solar » Wed Nov 21, 2012 11:09 am

2 Replies

1810 Views

Last post by jackssmirkingrevenge
Thu Nov 22, 2012 1:47 am
Hunting for a particular Valve

Last post by thatguydionysus
Replies: 7
by thatguydionysus » Fri Nov 16, 2012 11:59 am

First post

It should have 3 ports.
In
Out
Pilot.

Air should flow with little to no constriction from the IN port to the OUT port.

When pressure ~= to the...

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Thanks for the replies. but I think I've managed to design a useable valve that will meet my scheme.

wish me luck I'm off to scheme!

7 Replies

2600 Views

Last post by thatguydionysus
Mon Nov 19, 2012 4:17 pm
Burst Disc 400-500 PSI?

Last post by garybdavis
Replies: 3
by garybdavis » Sun Nov 18, 2012 7:36 pm

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I'm looking for one of those burst disc you see on the CO2 and HPA valves. You know, the small hex head that are 1/8NPT (I think). I see them all...

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If they just don't make the non-servicable burst discs in that range (I love their compactness), I'll use the Palmer adjustable pressure relief...

3 Replies

3474 Views

Last post by garybdavis
Mon Nov 19, 2012 10:28 am
CO2 cartridge/reg attachment and check valves

Last post by jackssmirkingrevenge
Replies: 3
by Someone89 » Sat Nov 17, 2012 8:02 pm

First post

Soo I've got an aquarium reg for 88g CO2 cartridges which I'm using to fill my qev gun. (It doesn't seem to fill to any kind of pressure threshhold...

Last post

Looks like it's a flow regulator, not a pressure regulator.

3 Replies

3132 Views

Last post by jackssmirkingrevenge
Sun Nov 18, 2012 3:25 am
Spudgun Technologies Supah Valve $50 Shipped

Last post by zerochance
Replies: 4
by zerochance » Sat Nov 17, 2012 1:11 pm

First post

Gonna try this again. Listed it once before at a higher price but no takers so I'm lowering the price and trying again.

Spudgun Technologies Supah...

Last post

Here's the 'proof' pic

4 Replies

1852 Views

Last post by zerochance
Sat Nov 17, 2012 8:17 pm
Piston Help

Last post by shardbearer
Replies: 4
by shardbearer » Tue Nov 13, 2012 8:28 pm

First post

I have a 2 golfball cannon, pretty standard PVC barrel sealer. I just broke my first piston which was a 1 1/4 PVC coupler, with a 3/8 thick epoxy...

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Thanks guys, I found some 2 Nylon rod lying around that I'll machine into a cup. Unfortunately I don't have a Harbor Freight nearby. Would Lowes or...

4 Replies

5135 Views

Last post by shardbearer
Fri Nov 16, 2012 10:17 am
Semi Auto

Last post by jackssmirkingrevenge
Replies: 125
by PCGUY » Sat Feb 05, 2005 6:39 pm
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SEMI AUTO

Provided By - Clide

Deemed the Slider gun in reference to it's key part, the exhaust valve.

Basically it is a fancy barrel...

Last post

Nice try clide, we know it's you ;)
125 Replies

251983 Views

Last post by jackssmirkingrevenge
Mon Nov 12, 2012 4:55 am
self sufficient semi-auto.

Last post by jackssmirkingrevenge
Replies: 4
by hydrolyzer » Sun Nov 11, 2012 3:38 am

First post

Hi, I'm pretty new to this and am still yet to learn a whole bunch. I saw the attached photo in another thread here and it got me thinking. I would...

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It would help us help you if we knew what sort of calibre amd projectiles you were planning to use, barrel length, what sort of performance you...

4 Replies

2264 Views

Last post by jackssmirkingrevenge
Mon Nov 12, 2012 3:45 am
Oil Filled Gauge or Pressure Subber?

Last post by Crna Legija
Replies: 3
by garybdavis » Sun Nov 11, 2012 10:03 pm

First post

The pressure gauge mounted on my pressure chamber will go from full pressure to zero rather rapidly when the cannon is fired. I wonder if this will...

Last post

I have a 0-1000 psi oil filled gauge on my fridge compressor that decomp quick when you disconnection it from the rifle, it has faired quite well,...

3 Replies

2155 Views

Last post by Crna Legija
Mon Nov 12, 2012 3:07 am
Doubt about recoil

Last post by Zeus
Replies: 5
by apocavorme » Sat Nov 10, 2012 7:40 am

First post

hello to all,
i m building a semi auto and the reload system will be like picture 1;
the question is: will it add a vertical recoil to the gun?
if i...

Last post

I recommend you work out how to calculate recoil, then consider anything under 30ft/lb of recoil is easy to handle, 30-50ft/lb gets a bit hard on...

5 Replies

2475 Views

Last post by Zeus
Sat Nov 10, 2012 3:39 pm
Next Generation Eclipse 40mm semi.

Last post by GonzoInferno
Replies: 13
by Solar » Tue Feb 21, 2012 12:43 am

First post

Here is the latest production prototype. New valve has over twice the flow rate of previous Eclipse and features a variable velocity choke....

Last post

Solar - Great info. Since I am scaled up a bit in size from your artwork, I was concerned I wouldn't have enough remote air storage. But now I have...

13 Replies

21306 Views

Last post by GonzoInferno
Fri Nov 09, 2012 10:40 am
Parts for an air system

Last post by Crna Legija
Replies: 10
by archie370 » Mon Nov 05, 2012 6:00 pm

First post

Hello all I currently have a pneumatic rifle and the air chamber is not substantial for 5 or more shots so I'm looking to upgrade first off I have a...

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i live in australia everything is limited, HPA tanks are rare and CO2 tanks are practically non existant ..

what? both are very easy to get, hpa...

10 Replies

7898 Views

Last post by Crna Legija
Thu Nov 08, 2012 2:59 am
300psi QEV, Poland, Jack, anyone...........?

Last post by jackssmirkingrevenge
Replies: 9
by evilvet » Tue Nov 06, 2012 10:53 pm

First post

Hi guys

Can you advise based on your experience an eBay or other source for a QEV in 1/4 that will take 300psi ?

My searches turn up a few usual...

Last post

Even a smaller bore (say 1/4 ) QEV should be adequate in that case, and better suited to take higher pressures.

9 Replies

6187 Views

Last post by jackssmirkingrevenge
Wed Nov 07, 2012 11:46 pm
tips for a long range airsoft rpg?

Last post by GonzoInferno
Replies: 13
by madmarcs » Sun Feb 19, 2012 11:55 am

First post

Alright I was just wondering if anyone had tips on how to make an airsoft rpg get better range. I want this thing to shoot nerf footballs and i want...

Last post

My concerns are if people are playing airsoft or paintball on a piece of neighborhood property with their store bought weapons, all is somewhat ok....

13 Replies

10256 Views

Last post by GonzoInferno
Wed Nov 07, 2012 12:41 pm
video of oxy bottle hybrid cannon firing as pneumatic only

Last post by jackssmirkingrevenge
Replies: 3
by steven_main » Tue Nov 06, 2012 4:29 pm

First post

120 PSI .... 1 7/8 impact socket vs brick wall.

Hybrid mode will be 5 times more powerfull :-)

Last post

Not bad at all for a ball valve :) looking forward to the hybrid performance, good luck!

3 Replies

5091 Views

Last post by jackssmirkingrevenge
Wed Nov 07, 2012 12:34 am
3/4" NPT (m) to 1" G (f)

Last post by PVC Arsenal 17
Replies: 15
by PVC Arsenal 17 » Thu Oct 11, 2012 12:39 pm
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As the title says, I need to connect something with male 3/4 NPT threads to something that has female 1 G threads. A direct adapter does not exist...

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No worries, guys. Let me give these valves a try with NPT fittings. If I blow myself apart, I'll make sure someone distributes these for me.

...If...
15 Replies

7993 Views

Last post by PVC Arsenal 17
Tue Nov 06, 2012 7:42 pm
Vehicle mounted antitank "gun" with preloaded cart

Last post by SkillessNoob
Replies: 27
by Larda » Sun Jul 15, 2012 7:17 pm
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Last week i started a small summer project, a vehicle mounted airsoft gun.
A gun that you load with 90mm preloaded pneumatic cartridges.
Each...

Last post

This project makes me happy inside. :)
27 Replies

14089 Views

Last post by SkillessNoob
Mon Nov 05, 2012 12:15 pm
Pictures of my potato gun finally finished and tested.

Last post by SkillessNoob
Replies: 9
by Jeeperforlife » Wed Oct 31, 2012 9:11 pm

First post

Hello again,

I have been out of the hobby for awhile now with a new hobby taking most of my time. but I blew the cobwebs off the old potato gun and...

Last post

This thing looks so epic lol. How bad-ass does it make you feel when you shoot it? :P

9 Replies

7958 Views

Last post by SkillessNoob
Mon Nov 05, 2012 11:35 am
6mm Full-auto

Last post by jackssmirkingrevenge
Replies: 3
by wyz2285 » Sun Nov 04, 2012 2:48 pm

First post

I thought I´d like to have a QEV+pop off full auto as well, so I bought a pop off and modified a QEV to use it.
It was very un-reliable, so I looked...

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Yes, I can see that working... just make sure that the pilot air is pushing on a piston with a larger diameter than the barrel in order to make sure...

3 Replies

1666 Views

Last post by jackssmirkingrevenge
Mon Nov 05, 2012 12:29 am
M50 x 1.5 (male) to 1-1/4" NPT (female) where to find?

Last post by Andreas90
Replies: 2
by Andreas90 » Tue Oct 30, 2012 11:16 am

First post

Hi everyone!

This is my first topic here at SpudFiles,
I'm building a Pneumatic Cannon with two QEV's and my air-tank is an fire extinguisher, the...

Last post

yes that could be an option, thank you.
I'm going to check now

2 Replies

1505 Views

Last post by Andreas90
Tue Oct 30, 2012 11:51 am
mfa2.0

Last post by jackssmirkingrevenge
Replies: 1
by chaos cannon » Mon Oct 29, 2012 10:56 pm

First post

Okay i was cleaning my closet today darned hurricane and came across this beauty. the name of this cannon is the mfa2.0 which stands for mass...

Last post

Nice standard launcher :) you might want to consider putting a burst disk in that camlock fitting to boost performance.

1 Replies

1575 Views

Last post by jackssmirkingrevenge
Tue Oct 30, 2012 1:52 am
Semi-auto 800 PSI .51cal WIP

Last post by JDP12
Replies: 68
by JDP12 » Tue Dec 20, 2011 12:39 am
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Alright, heres a WIP thread. It's gone through many variations... but this is my final design as its very simple compared to the original.

It's...

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Being at school sucks.. cuz I can't freaking work on this thing. Anyway, think I figured out my next move... Going to get rid of the whole barrel...
68 Replies

24472 Views

Last post by JDP12
Sun Oct 28, 2012 11:45 pm

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