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

927302 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

452634 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

471010 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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First post

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

638260 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

332348 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

80286 Views

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

Topics

Just a quick "Hello"

Last post by High-PSI
Replies: 14
by High-PSI » Sat Oct 09, 2010 8:05 pm

First post

Hey Guys,

I am a newbie here, though I have 10,000 posts on various other chat rooms for other hobbies.

I have various air cannons built right now...

Last post

Very cool!

Matt

14 Replies

3463 Views

Last post by High-PSI
Sun Oct 10, 2010 6:06 pm
Kobalt CO2 Regulator Setup

Last post by Ragnarok
Replies: 29
by williamfeldmann » Fri Nov 02, 2007 2:12 pm
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So a few months ago, while I was still working at Lowes I saw these come in.

Kopalt Portable Compressed CO2 Regulator

They will only charge to...

Last post

Old thread mate. You can't just go around correcting every mistake that may have been made in the past - usually, it's best to let these things...
29 Replies

15902 Views

Last post by Ragnarok
Sat Oct 09, 2010 5:36 pm
Is this Regulator suited for my needs?

Last post by Dgr8one85
Replies: 24
by Rocketbat » Sat Sep 25, 2010 6:30 pm
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Hi, i have finally come out of lurk mode after probably a year because i need some help in progressing in this amazing hobby!
I have been building...

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Have you tried using a high flow low pressure output paintball regulator. they use 1/8 NPT fittings, but you can use simple adapters to use. This...
24 Replies

7630 Views

Last post by Dgr8one85
Sat Oct 09, 2010 4:41 pm
Quick disconnect fittings

Last post by D_Hall
Replies: 16
by FighterAce » Fri Oct 08, 2010 5:16 pm
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I'm looking to replace the schrader valves on my guns because they are too slow to attach to my pump....
I got a few questions related to quick...

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Minor nitpick here, but...

While I'm sure they exist, I've never actually seen a QD with a check valve. A check valve is a valve that only allows...
16 Replies

4899 Views

Last post by D_Hall
Sat Oct 09, 2010 10:32 am
How does this dcv design look?

Last post by POLAND_SPUD
Replies: 5
by Matt_NZ » Fri Oct 08, 2010 2:57 am

First post

Here is a modified version of Iknowmy3stables dcv design from this thread

I'm hoping to create a push button dcv with 1/4 ports.
This will...

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The only port where the slit should be is the one you marked as pilot port. That where the switching actually takes place.

Of course, you need a...

5 Replies

1726 Views

Last post by POLAND_SPUD
Fri Oct 08, 2010 11:02 pm
PCP hammer valve project, french airgun

Last post by Gun Freak
Replies: 9
by jules56 » Tue Oct 05, 2010 2:03 pm

First post

Hi

Here is my pcp hammer project !
(unfinished, it lacks the grip and finishes...)

use pressure:40 bars for the moment
number of shoot...

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HAHA ! Love the thumbs up at the end lol. How did you go about making the hammer valve?

9 Replies

14782 Views

Last post by Gun Freak
Wed Oct 06, 2010 4:10 pm
Vacuum actuated QDV

Last post by Technician1002
Replies: 6
by auxiliary » Tue Oct 05, 2010 2:43 pm

First post

Here's how it works: First open the 3-way valve so that the pressure pump is open to the chamber behind the piston. Use the pump untill the piston...

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There is also the difficulty in adding piston mass and friction in adding a third set of washers and o ring. Minor leakage would cause loss of the...

6 Replies

2050 Views

Last post by Technician1002
Tue Oct 05, 2010 8:00 pm
Regulator and air tank help

Last post by Matt_NZ
Replies: 13
by Matt_NZ » Sun Oct 03, 2010 10:19 pm

First post

Hey,

I'm just after a bit of advice about connecting setting up a regulated air feed.

I currently have my fridge compressor setup and it is working...

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most regulators will have the screw fittings coming out of the body of the regulator, but the fittings themselves are simply screwed into the body of...

13 Replies

5686 Views

Last post by Matt_NZ
Mon Oct 04, 2010 6:30 pm
semi auto projectiles

Last post by jackssmirkingrevenge
Replies: 1
by Major Collins » Mon Oct 04, 2010 1:05 am

First post

i just need confirming with some help on projectiles

what are the ideal size of projectiles for an air gun using an hammer valve?

Would it be able...

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It depends on many parameters, namely strength/weight of the hammer, valve porting, chamber pressure and barrel length.

The Dragon Slayer for...

1 Replies

834 Views

Last post by jackssmirkingrevenge
Mon Oct 04, 2010 1:17 am
Need Help - Converting a large pneu to handheld.

Last post by HellenKeller
Replies: 6
by Pete Zaria » Sat Oct 02, 2010 6:49 pm

First post

Thanks in advance to anyone who might take a few minutes to answer a couple of questions for me.

Background:
A couple of summers ago, I build a...

Last post

I see you deleted my comment. YOU SAD? boo hoo crybabay noob.

6 Replies

2402 Views

Last post by HellenKeller
Sun Oct 03, 2010 5:45 pm
designing my first pneumatic cannon

Last post by Fnord
Replies: 41
by wolfie22 » Wed Sep 29, 2010 1:57 pm
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so i'm planning on building my first (full scale) pneumatic cannon. i want to build one that will shoot golf balls a distance of at least 1200 feet...

Last post

Ya know what wolfie, just go to the hardware store with $40 and buy some stuff for a spray n pray.

Since this is your first build, it's better to...
41 Replies

11329 Views

Last post by Fnord
Sun Oct 03, 2010 12:47 pm
Piston help

Last post by jackssmirkingrevenge
Replies: 25
by crazyhockeywako » Sun Sep 05, 2010 10:38 pm
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Hey everyone i need help with a piston valve i have tried twice and every time the piston leaks. I use 1/16 rubber washers and they don't do the job....

Last post

kinda soft kinda hard?

Yeah... kinda :roll: :D

Think vehicle tyre inner tube, that sort of consistency ;)
25 Replies

6211 Views

Last post by jackssmirkingrevenge
Fri Oct 01, 2010 5:21 am
A Sneak Peak.

Last post by Mpeddlesden
Replies: 8
by Mpeddlesden » Thu Sep 30, 2010 11:39 pm

First post

This is the piston For my New gun (which is not finished yet) so i thought i would put a couple of images up.

Last post

This Piston it's self is made from a door stop the length of it was twice as long but i cut it in half and pop-riveted the piece of rubber onto it....

8 Replies

2892 Views

Last post by Mpeddlesden
Fri Oct 01, 2010 1:22 am
pressurizing cannon help

Last post by pmruk
Replies: 13
by pmruk » Thu Sep 30, 2010 4:31 am

First post

I joined the forum about a month or so ago and after having a good look around the forum thought it was time i had a go myself and the attached pic...

Last post

If the compressor is not at fault, either there is a restriction closing off flow when the cannon is up to pressure, or the gauge on the cannon is...

13 Replies

2459 Views

Last post by pmruk
Thu Sep 30, 2010 3:19 pm
Innards of a "European" QEV

Last post by Ragnarok
Replies: 12
by BeaverRat » Mon Sep 27, 2010 8:08 pm

First post

Well, I decided to take apart one of my 3/4 European QEV's to model it accurately in GGDT. Here are the specs:

-3/4 (pipe threads) input/pilot,...

Last post

Anyway, for the sake of doing something a bit more relevant to the thread's original purpose than worrying about naming, I disassembled my 1/2 QEV...

12 Replies

3317 Views

Last post by Ragnarok
Tue Sep 28, 2010 11:34 am
I need HELP!

Last post by POLAND_SPUD
Replies: 14
by Sevenhawke » Sun Sep 26, 2010 6:42 pm

First post

After reading over some of the posts on this site I am convinced this is the place to go. Here's the situation. I have a charity haunted house coming...

Last post

Thanks for the reply POLAND_SPUD. I like the idea of using a relay to open and close the valve. What are you using to power it? there are relays that...

14 Replies

3732 Views

Last post by POLAND_SPUD
Tue Sep 28, 2010 1:49 am
Moar Power!

Last post by Gun Freak
Replies: 10
by HunterT » Sun Sep 26, 2010 3:56 pm

First post

Recently I built a 20mm PVC cannon and it was disappointingly low on power. So I decided I want more power and to get this power I want I settled on...

Last post

Okay. Many thanks. Could I still use my PVC barrel on it?
Yes.

10 Replies

2930 Views

Last post by Gun Freak
Mon Sep 27, 2010 7:38 pm
Pneumatic Air pressure

Last post by KingKyro
Replies: 16
by KingKyro » Sat Sep 25, 2010 11:50 am
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I just built my first Pneumatic gun and i was wondering what are the warning signs if any that i need to be aware of so i don't put to much air...

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I wonder if they don't carry them in locations that are always wet and humid and don't use irrigation.

i don't know about that tech cause there is...
16 Replies

5168 Views

Last post by KingKyro
Sun Sep 26, 2010 6:45 pm
P.M. on 2" P. Valve launcher

Last post by Gun Freak
Replies: 11
by motorfixer1 » Sat Sep 25, 2010 4:30 pm

First post

I finally got around to posting some pics of my pneumatic launcher. I have around 100 shots through it so I thought it would be a good idea to check...

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Interesting build there! It looks good, I think you should paint it. However... I have one comment... You have a HUGE pilot volume. You could have...

11 Replies

3305 Views

Last post by Gun Freak
Sun Sep 26, 2010 2:32 pm
How connect wires to my fridge compressor

Last post by Technician1002
Replies: 7
by Tobin » Wed Sep 22, 2010 12:37 pm

First post

I recieved a fridge compressor today. It have 3 inlet connectors but i dont know how to connect the cables. I just took a chance and blowed a fuse...

Last post

You can take one for free from a dead refrigerator.. They unplug. Pick one up from a fridge about the same size compressor. They should be in the...

7 Replies

65313 Views

Last post by Technician1002
Sun Sep 26, 2010 1:30 pm
3/4in QEV gun

Last post by Crna Legija
Replies: 13
by jim_himself » Wed Sep 22, 2010 10:06 pm

First post

At the moment, I am building my first QEV gun. My current setup is a 3/4in QEV with a 6in long 3/4 chamber and a 1/4in ball valve pilot. I hope to...

Last post

i got 3 from a junkyard just in case one didn't work and it only cost the entrance fee, i had to cut it out my self not hard but its illegal to...

13 Replies

3519 Views

Last post by Crna Legija
Sat Sep 25, 2010 10:31 am
2inch piston valve problems

Last post by clemsonguy1125
Replies: 12
by superspud09 » Fri Sep 24, 2010 3:46 pm

First post

Hi im new to this forum but not to spud guns. i encountered a problem with my barrel sealing piston valve and i cant seem to figure it out... its a 2...

Last post

If you have issues with the O-rings, glue craft felt around the piston, it compresses as you slide the piston in. Medical Tape also works well.

12 Replies

4076 Views

Last post by clemsonguy1125
Sat Sep 25, 2010 9:07 am
Help with 3/4in QEV

Last post by jim_himself
Replies: 14
by jim_himself » Tue Sep 21, 2010 7:57 pm

First post

Hello, I've just started my first QEV air gun build and have run into an issue. The threads on my 3/4 to 1/2 (used for making my pilot) to fit into...

Last post

U need to remember my fitting was only in a turn and a half. Also i put the pieces together and put the weld around the edges to make a shell of sorts

14 Replies

4363 Views

Last post by jim_himself
Fri Sep 24, 2010 8:47 pm
QEV Compatibility Question

Last post by ammosmoke
Replies: 4
by ammosmoke » Fri Sep 24, 2010 4:52 pm

First post

Hey all, so I'm considering making a mini to shoot 6mm ball bearings. I have an ASCO 1/8 3 way QEV valve like this one.

I had a design all...

Last post

Oh, so shouldn't be good then? There is about a 1/16th gap all the way around the diaphragm as it is.

EDIT: NVM, I see what you are saying. I just...

4 Replies

2440 Views

Last post by ammosmoke
Fri Sep 24, 2010 7:24 pm
Using a 33g co2 cartridge for a qev airgun?

Last post by spudamine
Replies: 4
by killerbanjo » Thu Sep 23, 2010 5:21 pm

First post

Well a my Dads friend just gave me a load of 33g co2 cartrages that are used in life jackets and wonderd if they would be anygood for use in a 8mm...

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chop it in half, fill the blunt tip with lead and the rest with foam and you have yourself a serious piece of ammo if you can find a barrel it fits...

4 Replies

2828 Views

Last post by spudamine
Fri Sep 24, 2010 12:36 pm

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