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

1079647 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

527251 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

620545 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

783594 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

364536 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

88821 Views

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

Topics

400 PSI 150 FPE METAL 50 CAL. MUZZLELOADER QEV CANNON

Last post by spudhead
Replies: 18
by mpmrla » Thu Oct 06, 2011 9:30 pm
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All the parts for this cannon are totally off the shelf starting with the re-purposed 50 caliber muzzleloader barrel. I am presently firing it with...

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thank you for sharing your build. i have been planning to build this since i first saw your videos. i been meaning to get down to grainger and buy...
18 Replies

18379 Views

Last post by spudhead
Sat Jan 18, 2014 11:49 am
What is this compound on these threads?

Last post by PeteS
Replies: 9
by U1timateWaff1e » Thu Jan 16, 2014 7:27 pm

First post

I bought this check valve online a few days ago and the threads had this red pre-applied goop on the threads. I asked the seller what it is but they...

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As in if I thread it into a female portion those two will be permanently fused?
No. It's permanent in that it's make once - it won't seal a joint...

9 Replies

3631 Views

Last post by PeteS
Fri Jan 17, 2014 6:10 am
pressure washer handles

Last post by fenrir
Replies: 1
by Major Collins » Tue Jan 14, 2014 8:03 am

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I been looking around at getting a pressure washer handle though i wanted to make and fit my own handle on it.
Does anyone have pictures or a video...

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The inside is just a poppet valve actuated by the trigger.

1 Replies

1530 Views

Last post by fenrir
Tue Jan 14, 2014 10:47 am
What qev should I get? And a two other questions

Last post by spudhead
Replies: 19
by beastmode986 » Mon Apr 09, 2012 3:57 pm
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Ok so I want to get a qev for my next project . I want to make changeable bfb barrels so I'm can shoot different kinds of ammo, should I get a 1/4 in...

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thank you beastmode986 for this thread. very good reading here. i have a question though. do people realy put 1000 psi to the cheaper aluminum qev?
19 Replies

9217 Views

Last post by spudhead
Tue Jan 14, 2014 9:13 am
Qdv question

Last post by Technician1002
Replies: 5
by fenrir » Sat Jan 11, 2014 4:53 pm

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Just a quick question: is it possible for the front oring of a qdv piston to blow off at high pressure? How can this be prevented?

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What do you consider high pressure ? One of my early cannons using an o ring used to launch the ring at about 60 PSI. To prevent that, I went to the...

5 Replies

2651 Views

Last post by Technician1002
Mon Jan 13, 2014 8:03 pm
Vintorez wannabe 2.0 (hammer valve)

Last post by wyz2285
Replies: 42
by bahur47 » Mon Jan 16, 2012 6:23 pm
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Hello again, this is the new version of my previous gun:

This time it is multi-shot and it is breech-loading. The wood, the barrel and the air...

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I bought all my airsoft good from Spain and Poland.
In Portugal according to the law airsoft guns needed to by painted but not in Spain and Poland so...
42 Replies

21222 Views

Last post by wyz2285
Sun Jan 12, 2014 6:45 am
Co2 Regulators

Last post by jackssmirkingrevenge
Replies: 5
by Gabriel S » Sat Nov 02, 2013 7:14 am

First post

Hi, this is my first post on the forum so I will introduce myself, My name is Gabriel and I run a youtube channel called ChannelX24 (drop a sub if...

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The regulator's job is not to act as a valve - the +/- setting increases or decreases the output pressure but is not an on-off valve.

Did you try...

5 Replies

3201 Views

Last post by jackssmirkingrevenge
Sun Jan 12, 2014 3:29 am
Gun jammed

Last post by Technician1002
Replies: 6
by limbeh » Mon Jan 06, 2014 9:45 am

First post

I operate coaxial piston cannons for my college. We get the freshmen to shoot them every year as part of a student project -

I know, the above...

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In regards to your piston photos, there is a large area of seal exposed allowing air behind the seal resulting in tearing at the washer. The washer...

6 Replies

4207 Views

Last post by Technician1002
Tue Jan 07, 2014 7:43 pm
PCP Pumps?

Last post by jackssmirkingrevenge
Replies: 8
by PeteS » Fri Jan 03, 2014 6:35 am

First post

I saw a PCP rifle pump that claims to have a 3600 psi capacity. It looks like the volume is way better than shock pumps as well. It is apparently a 3...

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[quote= ]Nooo don't ask!!

Yeah better not :D

8 Replies

5042 Views

Last post by jackssmirkingrevenge
Sun Jan 05, 2014 11:26 pm
First Cannon 200 psi Ball Valve

Last post by jackssmirkingrevenge
Replies: 6
by Flindo Jimbori » Mon Dec 30, 2013 11:45 am

First post

This is my first cannon. It is made of 1.5 inch schedule 40 PVC and a ball valve. It fires golf ball cores (see images) nicely, but not much else...

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I also found that 5 hour energy bottles work well, but there is a small gap around the sides, so I may wrap it with duct tape until it fits better....

6 Replies

3466 Views

Last post by jackssmirkingrevenge
Sat Jan 04, 2014 8:08 am
300 PSI Pistol (FPS and damage pic)

Last post by spade
Replies: 5
by spade » Fri Dec 27, 2013 9:42 pm

First post

Hey this is my first post here but I've been looking around for a few months and figured I'd make an account when I had something to upload,...

Last post

I see... thanks for the information. 8)

5 Replies

3700 Views

Last post by spade
Mon Dec 30, 2013 9:11 am
machinist needed

Last post by jsefcik
Replies: 2
by jsefcik » Fri Dec 27, 2013 10:22 pm

First post

Sup guys,havent been on the forum in a while,been busy with work and my son but anyways

I had a piston machined by jrrdw if he is still on here...

Last post

Might have double tapped the submit ill post pics later

2 Replies

5687 Views

Last post by jsefcik
Sat Dec 28, 2013 11:57 am
6mm multishoot bolt action finished

Last post by jackssmirkingrevenge
Replies: 34
by bravootome » Sun Oct 27, 2013 12:49 pm
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6 mm multishoot qev finaly finished

Last post

Great work!
34 Replies

17549 Views

Last post by jackssmirkingrevenge
Thu Dec 26, 2013 6:52 am
launch a water filled tennis ball ??????

Last post by goosebumps912
Replies: 11
by Captchipahoy » Wed Apr 10, 2013 3:04 pm

First post

OK I am a newbie at this. I love blowing up stuff and firing stuff.

Here is what I want to do
3 blocks away from my home is a water tower I want to...

Last post

shivers that must be dangerous

11 Replies

6946 Views

Last post by goosebumps912
Wed Dec 25, 2013 10:44 pm
Dead volume and the sound barrier

Last post by Ragnarok
Replies: 11
by Ragnarok » Thu Dec 19, 2013 8:34 pm

First post

Given I've got into some discussions about supersonic pneumatics recently, I figured it was actually worth experimenting with the theory regarding...

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Well, strengthened separator and sabots in hand...

CIMG0348-600.jpg

... aaaaaand they didn't hold up:

CIMG0353-600.jpg
(I painted them to make...

11 Replies

6193 Views

Last post by Ragnarok
Tue Dec 24, 2013 2:50 pm
My First Air Piston Cannon

Last post by Technician1002
Replies: 14
by micquai » Wed Aug 22, 2012 7:29 pm

First post

This is my first attempt to build an air piston cannon.
It has two 3 x 24 air chambers and a 1 1/2 x 32 barrel. I made the barrel removable to...

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Possible cause of failure may be related to the cannon support on the air chambers and the barrel recoil was unsupported except by the vertical pipe....

14 Replies

6963 Views

Last post by Technician1002
Tue Dec 24, 2013 12:50 am
Stop a leak

Last post by PVCpneumatic
Replies: 5
by PVCpneumatic » Thu Dec 19, 2013 7:45 pm

First post

Hey Guys and Gals, How can I make a Male to female joint air tight without gluing it together? This is for my air cylinder to ball valve and ball...

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Cheers PeteS. Hopefully this will work for all future models that I make. I know where all the leaks are, but the contact glue that I used to attach...

5 Replies

2644 Views

Last post by PVCpneumatic
Fri Dec 20, 2013 7:28 pm
6mm piston valve air gun

Last post by bravootome
Replies: 20
by ToasT » Sat Dec 14, 2013 7:33 am
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I have been around here for awhile now so its about time I posted something that isn't off topic..

final.JPG

This is my first attempt at making...

Last post

ok, than take a look at this man that shoots 60 bar with metal bb. It is way over speed of sound

This man is a member of spudfiles ;)

there are...
20 Replies

11752 Views

Last post by bravootome
Fri Dec 20, 2013 3:50 pm
My First Sprinkler Valved Cannon "Airpress's Style"

Last post by jackssmirkingrevenge
Replies: 8
by airpress » Sat Dec 14, 2013 1:57 pm

First post

Hi folks!

It's winter time here so it's time to build a new cannon.
I will use something that I never used before, a sprinkler valve.
Offcourse it...

Last post

Friday I go to the Ardennes

Take a metal detector :)

The colour scheme is slightly toy-like but I like it :D

8 Replies

6188 Views

Last post by jackssmirkingrevenge
Wed Dec 18, 2013 7:47 pm
Hey there!

Last post by tigerblues28
Replies: 5
by PsiPhun » Fri Nov 29, 2013 10:37 pm

First post

Firstly.. Thanks for a dedicated forum!!
We had some free time at work..decided to do a little research into things to build , decided on a psi...

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If I remember correctly, my ball valve cracked and fell apart after many, used in freezing and cooler temps. ( I made it towards the end of fall, in...

5 Replies

1996 Views

Last post by tigerblues28
Mon Dec 16, 2013 4:48 pm
Help with semi auto nerf cannon

Last post by brad0896
Replies: 4
by brad0896 » Tue Dec 10, 2013 9:03 pm

First post

Hey guys. I would like some help from on a little project I am doing. I play airsoft and at the events we play at, you can use an airsoft LAW that...

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Ok thats good news. I found a 3/4 QEV on ebay. I also found a 1/2 slide valve on ebay
Will these two items work together? I know I need a 3/4 to 1/2...

4 Replies

4371 Views

Last post by brad0896
Thu Dec 12, 2013 4:40 pm
My Sniper

Last post by fklco
Replies: 9
by fklco » Wed Dec 11, 2013 2:48 pm

First post

My sniper unfinished

Last post

Waw !!! thanks, but I think is too match tor me I buid this rifle just for fun, have a lot of power with paint-ball, is too more for self defense,...

9 Replies

4511 Views

Last post by fklco
Thu Dec 12, 2013 2:52 pm
Semi Auto Piston Valve Paintball Gun

Last post by 1nxtmonster
Replies: 6
by 1nxtmonster » Mon Nov 25, 2013 6:06 pm

First post

Finally finished this project. Semi Auto piston valve paintball gun made from PVC. Some specs:

Air source: regulated 70 PSI 5 gallon air tank...

Last post

So the regulator setup is that the gun works best at a certain pressure (in this case 70 PSI, any higher and the paintballs will explode). I can fill...

6 Replies

4552 Views

Last post by 1nxtmonster
Mon Dec 09, 2013 8:11 am
Not finished hammer valve !

Last post by bravootome
Replies: 4
by bravootome » Wed Nov 27, 2013 5:26 am

First post

what is the ideal outlet valve/hammaer valve diameter for a easy opening and good air exhaust @ 40- 50 bar/ 6 mm steel bb's.?
The valve on the...

Last post

what is the ideal outlet valve/hammaer valve diameter for a easy opening and good air exhaust @ 40- 50 bar/ 6 mm steel bb's.?
The valve on the...

4 Replies

3045 Views

Last post by bravootome
Sun Dec 08, 2013 1:35 pm
Manufacturer's valve max. PSI rating vs. actual

Last post by advancedspuds
Replies: 10
by air_dannon » Tue Dec 03, 2013 12:19 pm

First post

Hi,

I've been looking around (again) for a commercial QEV that can handle 400 psi (my attempts to make one have failed too often). This one (I...

Last post

Usually, with a metal valve at least, it's the diaphragm that is rated. I have taken a 3 valve rated for something like 12psi and made a thicker...

10 Replies

4627 Views

Last post by advancedspuds
Fri Dec 06, 2013 11:04 pm

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