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

1670842 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

755566 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

983092 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...

Last post

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

1166087 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

466840 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

131609 Views

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

Topics

6mm (Airsoft) True Semi Auto Sniper Rifle. With 12 shot mag

Last post by sumisukyo
Replies: 44
by jhalek90 » Thu Jul 01, 2010 6:27 pm
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Well spudfiles, I've been quite busy with this project for the past few weeks.

SPECS:

Valve: 1/4'' QEV from ebay piloted by a 1/4'' slide valve...

Last post

Hey can we please get a schematics for the design. :wink: id really like to see how it works :D its amazing mine doesn't come close :shock:
44 Replies

28914 Views

Last post by sumisukyo
Sun Feb 13, 2011 1:49 pm
QDV as pilot

Last post by daniele tn
Replies: 16
by daniele tn » Thu Feb 10, 2011 4:28 pm
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Hey guys,
as you maybe already know thanks to another post, I am bulding another piston valve gun.
I'm really trying to get the best efficency using...

Last post

1/4 Diameter will give a port area = to the cross section of the barrel. This gives in essence two restrictions choking flow of the same size, the...
16 Replies

5888 Views

Last post by daniele tn
Sun Feb 13, 2011 10:27 am
What fits in a 1/4" copper tube?

Last post by AnotherSnappedLine
Replies: 4
by AnotherSnappedLine » Sun Feb 13, 2011 12:01 am

First post

Does anyone know the Inner Diameter of 1/4 ...I would love to know what I can use for .177 or .22 pellets.

Last post

OOPS, I need the serial number... 89955K21

4 Replies

3162 Views

Last post by AnotherSnappedLine
Sun Feb 13, 2011 8:31 am
Semi Automatic Blowback Paintball Launcher

Last post by Lockednloaded
Replies: 22
by Lockednloaded » Sat Jun 19, 2010 4:57 am
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I have been designing and redesigning my upcoming launcher, and I have now abandoned the pneumatic cylinder option. So I decided to go with a...

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sorry to kick this up, but I'm thinking of using the blow forward barrel for this long put off project. I can now use pressures up to 700psi, so I...
22 Replies

12376 Views

Last post by Lockednloaded
Sat Feb 12, 2011 12:02 am
Will this semi-auto QEV design work?

Last post by Crna Legija
Replies: 5
by jmez1996 » Thu Feb 10, 2011 5:33 am

First post

okayyy so i have recently bought this QEV

im am planning on implementing it as shown in the diagram below and using a regulator between the tank...

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if you don't put a spring behind the piston and a small hole in the outer edge of the piston then it will not work, and if you do it then might as...

5 Replies

4181 Views

Last post by Crna Legija
Thu Feb 10, 2011 10:42 am
Airsoft Sniper

Last post by Gun Freak
Replies: 11
by ELJONTO » Tue Feb 08, 2011 1:46 am

First post

Hey all,

New to the community and since I've been occasionally on the forums from time to time to search for certain ways to do stuff, I thought...

Last post

It was the spring-loaded ball valve that made me single out FighterAce's example ;)

I see :wink:

11 Replies

3514 Views

Last post by Gun Freak
Thu Feb 10, 2011 7:37 am
First post!!!(and metal pneumatic!!)

Last post by AnotherSnappedLine
Replies: 13
by AnotherSnappedLine » Tue Feb 08, 2011 10:51 pm

First post

Hello all! This is my first post and I'm quite excited about this site. My usual builds are combustion and a few sprinkler valve pneumatics but I...

Last post

sweet! thanks ill check it out

13 Replies

4713 Views

Last post by AnotherSnappedLine
Wed Feb 09, 2011 10:02 pm
Sprinkler valve not sealing properly

Last post by motorfixer1
Replies: 3
by ppoppers » Wed Feb 09, 2011 2:46 pm

First post

Hey y'all,

I have built pneumatic spud guns in the past, using this same set up, with no problems. But now I have 4 completed spud (well, t-shirt,...

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First, welcome to spudfiles
However, when I open up the hole in the diaphram, that is normally used to bleed air out of the sprinker lines, the tank...

3 Replies

4171 Views

Last post by motorfixer1
Wed Feb 09, 2011 8:48 pm
Sprinkler Valve Metal Pneumatic

Last post by AnotherSnappedLine
Replies: 12
by HollowTip » Sun Sep 23, 2007 12:55 pm

First post

Hey everybody, I've been reading spudfiles for a couple of months. From browsing the forum i've seen that this forum is nicely run. Anyways this...

Last post

OOH crud! Im sorry! Rookie mistake.... :oops:

12 Replies

7524 Views

Last post by AnotherSnappedLine
Wed Feb 09, 2011 8:12 pm
My golfBall Launcher

Last post by AnotherSnappedLine
Replies: 9
by UKSGC » Mon Aug 24, 2009 9:50 am

9 Replies

6905 Views

Last post by AnotherSnappedLine
Tue Feb 08, 2011 11:00 pm
Where to get Fridge Compressor?

Last post by metalmeltr
Replies: 19
by BeaverRat » Mon Aug 23, 2010 6:23 pm
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Hello,
I have been searching for a place to aquire a fridge compressor, but I'm having no luck. Where are some probable locations I can get one for...

Last post

www.surpluscenter.com
there about $25 if i remember right
if you cant find one it is an option to consider

Edit Direct Link
19 Replies

8565 Views

Last post by metalmeltr
Fri Feb 04, 2011 7:32 pm
what size QEV for new semi-auto?

Last post by jmez1996
Replies: 5
by jmez1996 » Fri Feb 04, 2011 7:39 am

First post

okay so i am working on a repeating QEV gun using this valve which i am going to buy
i plan on achieving semi-auto through either the same pilot...

Last post

great thanks. yeh i plan on making a bolt action..
ill upload in a few weeks when i put it all together.

5 Replies

1368 Views

Last post by jmez1996
Fri Feb 04, 2011 8:50 am
air rifle pellets

Last post by Zeus
Replies: 9
by LovableAirGuns » Sun Jan 30, 2011 4:35 am

First post

hey everyone i thought i would just ask but are air rifle pellets illegal in Australia? and do you or do you not have to have a gun licence to own...

Last post

In Vic I can't get shotgun shot, I asked after I'd bought a slingshot rubber because I prefer .38 lead for that type of band but no go unfortunatly....

9 Replies

5890 Views

Last post by Zeus
Thu Feb 03, 2011 11:09 pm
Another valve help topic, xD

Last post by nadjatee1996
Replies: 61
by nadjatee1996 » Fri Jan 21, 2011 10:52 pm
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I haven't been active lately, due to finals, but hey, I'm back! After proposing my last idea, I need help yet again, incorporating JSR's valveless...

Last post

Buh buh, THAT WAS A JOKE..
61 Replies

13451 Views

Last post by nadjatee1996
Tue Feb 01, 2011 3:46 pm
Can bent schraders withstand pressure?

Last post by jackssmirkingrevenge
Replies: 7
by limbeh » Mon Jan 31, 2011 4:29 am

First post

Will a bent schrader still withstand pressure? I can't find any info on google or on spudfiles on this topic.

My design pressure is 200psi or so,...

Last post

You may crush the (internal) threads which will mess with sealing.

So remove the stem, replace it with that old stem which doesn't seal anymore...

7 Replies

2224 Views

Last post by jackssmirkingrevenge
Mon Jan 31, 2011 2:24 pm
Piston Valve Build Help.

Last post by Crna Legija
Replies: 15
by D&J » Sat Jan 29, 2011 11:03 pm
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Hello wonderful people of Spudfiles ,

I need help building my piston valve. I can't find the parts
except for a brass tee at my local Lowe's store,...

Last post

i couldn't find a hose barb ether so i cut the male threads off a brass fitting and soldered some copper pipe into it, works fine iv had it at 600psi
15 Replies

6946 Views

Last post by Crna Legija
Sun Jan 30, 2011 9:48 pm
suppressors

Last post by ramses
Replies: 8
by qwert123 » Thu Jan 27, 2011 10:18 pm

First post

well i made a suppressor. it consists of .5 PVC, with 50 .5 holes drilled in it, i then raped it in paper towels, and masking tape. placed it into...

Last post

keep it classy, JSR
1/2 PVC has an OD of 0.840 and an ID of 0.622 , ramses

Half inch holes seem too big. That's the full nominal diameter of the...

8 Replies

3044 Views

Last post by ramses
Sun Jan 30, 2011 3:07 pm
Ghetto airgun

Last post by nadjatee1996
Replies: 14
by nadjatee1996 » Sat Jan 29, 2011 8:45 pm

First post

JSR style...well..the epoxy part is his style xD

Damage with a battery at kinda close range (2 yards?) it busted through the box behind that too...

Last post

lol..what was it?..RONANKEATINGROLLING?lolwut? <- I haven't said that in months, like actually said it...

14 Replies

6698 Views

Last post by nadjatee1996
Sun Jan 30, 2011 1:17 pm
Cheap 3/4" QEV's in Abundance... [For Sale]

Last post by origin unknown
Replies: 17
by BeaverRat » Sat Jan 01, 2011 4:21 am
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Well, as some of you may rememmber, some time ago I recieved 10 European 3/4 QEV for the price of one.

I did contact the company responsible for...

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I would like one. I need a QEV with a tad more flow than my 1/2 Fastenal QEV for a new cannon I might build. Man... long time no see, Spudfiles. I've...
17 Replies

8882 Views

Last post by origin unknown
Sun Jan 30, 2011 1:24 am
paint ball regulator

Last post by Gippeto
Replies: 1
by qwert123 » Fri Jan 28, 2011 10:41 pm

First post

i have 2 paint ball tanks, a c02 and a compressed air tank, does anyone know if i could buy a regulator to use the air at 90 psi?

Last post

Palmers pursuit female stabilizer with a low pressure kit.

1 Replies

1482 Views

Last post by Gippeto
Fri Jan 28, 2011 11:32 pm
First post, showcase/questions

Last post by jackssmirkingrevenge
Replies: 6
by DIY4LYF » Thu Jan 27, 2011 11:25 pm

First post

Hey guys, first post and eager to learn!

In the last couple of months I have done a lot of tinkering with PVC cannons. The first I worked on was a...

Last post

Definitely room for improvement, but kudos for making your own working piston cannon regardless, you hadn't found spudfiles yet so we forgive any...

6 Replies

1868 Views

Last post by jackssmirkingrevenge
Fri Jan 28, 2011 11:33 am
another semi-auto idea!?

Last post by ilovefire
Replies: 24
by ilovefire » Fri Jan 21, 2011 4:40 am
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iv always wanted to make a semi and am always trying to think of an idea that i like for when i have the money to make it, this is another one of my...

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ok well i did up a quick prototype coax with a schrader in the chamber and spring behind the piston will be testing it for semi-auto later this...
24 Replies

6632 Views

Last post by ilovefire
Fri Jan 28, 2011 2:48 am
sprinkler valve cannon help

Last post by jackssmirkingrevenge
Replies: 11
by g4bandit » Sun Dec 26, 2010 12:18 am

First post

I recently made a simple sprinkler valve cannon (4 foot 2in pvc pipe gas chamber to a blowgun modified sprinkler valve). I've done tests at around...

Last post

The above design should theoretically perform better as the air doesn't have to go through any bends (other than within the sprinkler valve itself)...

11 Replies

4493 Views

Last post by jackssmirkingrevenge
Fri Jan 28, 2011 1:40 am
inexpensive rifled airgun barrel

Last post by Labtecpower
Replies: 15
by jakethebeast » Sat Jan 22, 2011 3:31 pm
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hi!

About a year ago, i had a grazy airgun-bug bite, i just wanted to make an airgun, i didnt even have tools to make one :D . Then the idea vent...

Last post

couldn't you sacrifice an old airgun for the barrel, and the stock?

You could probably keep the break-barrel, and instead of the spring, you could...
15 Replies

11200 Views

Last post by Labtecpower
Wed Jan 26, 2011 6:24 am
Hammervalve question

Last post by Brian the brain
Replies: 9
by The_Guerilla_Guy » Mon Jan 24, 2011 11:00 am

First post

Hi guys, I'm back with another idea for a hammer valve:

Or maybe not even a hammer, but pushbutton first.

If you have a pipe with a tee at the...

Last post

My push-button valve uses 1 O-ring and a flat washer.
This will generally mean less wear..

But the principle is to balance the two sides out...

9 Replies

7499 Views

Last post by Brian the brain
Mon Jan 24, 2011 4:13 pm

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Pneumatic Cannons

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