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

1206058 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

606253 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

858845 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

1022139 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

393189 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

100327 Views

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

Topics

paintball coax(first gun)

Last post by SilentCyan
Replies: 9
by SilentCyan » Thu Dec 11, 2008 10:45 pm

First post

well then, i've finally gotten around to posting my first cannon :D definitely could have been put together better and it needs a paint job but hey,...

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thanks for the compliments(and repeatedly pointing out the coupler :lol: )

as for the pressure gauge being where it is, i wanted to put it somewhere...

9 Replies

3331 Views

Last post by SilentCyan
Mon Dec 15, 2008 1:30 pm
14 gauge double barrel break action shotgun

Last post by STHORNE
Replies: 26
by koolaidman » Thu Jul 31, 2008 5:33 pm
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Hey again guys. I realized this site has been in a lull. Too few new cannons and too many 13 page topics about zombie uprisings. Ive been working on...

Last post

thanks. keep up the good work koolaidman :wink:

proud of ya
26 Replies

17994 Views

Last post by STHORNE
Sun Dec 14, 2008 7:52 pm
Unfinished PB Sniper(Need Opinions)

Last post by sputnick
Replies: 4
by Mateo » Sun Dec 14, 2008 6:22 pm

First post

this is my first major project. from tip to valve its 4 1/2 ft long. barrel is 3/4th in. valve is modded sprinkler. trigger is rigged blow gun....

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oooooooh sounds great, i cant wait to see it! looks like its going to be a very decent gun. if you want to use it for paintball, i would half the...

4 Replies

1339 Views

Last post by sputnick
Sun Dec 14, 2008 7:41 pm
Performance enhancement

Last post by psycix
Replies: 58
by Ragnarok » Sun Dec 07, 2008 8:52 pm
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Now, as I'm sure you know, HEAL 2/3vo has been in the pipeline for ages, and has been repeatedly pushed further and further back.
I suddenly snapped...

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I believe I am already pushing the limits of what is reasonable to subject my neighbours to
One good blast without ear protection and they will...
58 Replies

10835 Views

Last post by psycix
Sun Dec 14, 2008 6:44 am
possible way eliminate 3 way valve

Last post by POLAND_SPUD
Replies: 9
by Sticky_Tape » Sat Dec 13, 2008 9:19 pm

First post

I think I have a way to eliminate the need for a three way valve in one of those semi auto dart guns. Placeing a pop off just before the pilot valve....

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unfortunatelly there is no way to replace a 3 way valve with something else... not without lowering efficiency...
however you could add a pop-offf...

9 Replies

1559 Views

Last post by POLAND_SPUD
Sun Dec 14, 2008 5:17 am
Piston material

Last post by ALIHISGREAT
Replies: 19
by jitup » Fri Dec 12, 2008 6:03 pm
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Hello once again,

I am working on (almost finesed with except for the valve) a 3 inch piston gun. I want to pour the piston, but I do not have any...

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Piston weight may not affect opening time... but a heavier piston has more momentum... so keeping weight to a minimum is generally a good idea to...
19 Replies

5920 Views

Last post by ALIHISGREAT
Sun Dec 14, 2008 5:10 am
My New CO2 Tank

Last post by judgment_arms
Replies: 20
by Lentamentalisk » Fri Dec 12, 2008 8:42 pm
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I was just at the local junk yard type place, and stumbled across an empty paintball CO2 tank. When I asked what how much it cost, the person (who...

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I believe the threads in paintball tanks are 5/8 - 18 UNF. The valve is likely to be installed with thread locker .

Some heat may be in order. :)...
20 Replies

7604 Views

Last post by judgment_arms
Sat Dec 13, 2008 5:28 pm
5mm Pistol

Last post by Ragnarok
Replies: 9
by Sticky_Tape » Sat Dec 13, 2008 10:31 am

First post

Basicly this gun is just my 5mm Marker with a blowgun pilot, a fore grip, and a ram rod holder. It gets great proformance for it's size alot better...

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The gun is just 8 3/4'' long without the ramrod in place
Ok, that's smaller than I thought. Actually, less than my hand span.

Not bad performance...

9 Replies

4764 Views

Last post by Ragnarok
Sat Dec 13, 2008 5:19 pm
Another burst disk cartridge

Last post by Gippeto
Replies: 12
by daccel » Sun Dec 07, 2008 11:56 pm

First post

Inspired by jsr's idea , I thought I would start my own thread as I will hopefully be able to give it a go over Christmas.

I was perusing the...

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For a fixed diameter and tensile strength, yes.

Seems reasonable, I only wish k could be calculated. It seems to be a constant derived by...

12 Replies

5116 Views

Last post by Gippeto
Sat Dec 13, 2008 5:14 pm
My plans

Last post by john bunsenburner
Replies: 20
by john bunsenburner » Fri Dec 12, 2008 4:02 pm
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I drew a little diagram of how i imagined my first gun. There are three different barrels, one for the use with my self cast pellets the other for...

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That is the reason i love poland and its peopel thank you. I have made the following decision: I will buy a QEV and i will make my hamme rvalve...
20 Replies

4816 Views

Last post by john bunsenburner
Sat Dec 13, 2008 4:29 pm
1/2" QEV or 3/4" sprinkler valve

Last post by Gippeto
Replies: 12
by LCTChamp » Tue Dec 09, 2008 9:40 pm

First post

I am planning on building a small bore pneumatic gun. I plan on using a .40 caliber blowgun as a barrel so I can use darts. I wont be using pressure...

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If you're going to buy a valve, assuming that the costs locally are near each other or not of concern (When does that ever happen?) I would say, get...

12 Replies

3115 Views

Last post by Gippeto
Sat Dec 13, 2008 4:16 pm
Coaxil stick rifle breech loading ?

Last post by Daltonultra
Replies: 10
by jakob » Wed Dec 10, 2008 7:06 pm

First post

is it possible to make a breech loading system for a coaxil stick gun or does it have to be muzzle loaded ?

Last post

I have a slightly different idea.

Use 2 T's, a smaller inside the larger. The straight-through of both T's would be along the length of the chamber...

10 Replies

3740 Views

Last post by Daltonultra
Fri Dec 12, 2008 8:31 pm
Airburst Paint Grenades

Last post by SEAKING9006
Replies: 12
by Zippster » Mon Dec 08, 2008 10:39 pm

First post

You read the title, and you know why you're reading this.

If you don't know what a paint grenade is, its nothing explosive. These 'grenades' are...

Last post

Happy to see my design used in others cannons. I've thought about artillery, but the thing that always puzzled me was how the hell would I get a...

12 Replies

5325 Views

Last post by SEAKING9006
Fri Dec 12, 2008 7:18 pm
are this fast enough??

Last post by psycix
Replies: 18
by far_cry » Wed Dec 10, 2008 3:33 pm
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a ball valve spring loaded . are this opening fast enough??

Last post

Besides opening time, a spring loaded ball valve can be a way more comfortable trigger.
Slapping open a BV throws of your aim.
18 Replies

4929 Views

Last post by psycix
Fri Dec 12, 2008 6:54 pm
SKC1 pneumatic copper sniper

Last post by spudamine
Replies: 15
by spudamine » Wed Nov 26, 2008 6:23 pm
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Hi, I'm new here so I Thought I'd introduce myself with some of my work before bombarding people with questions. I put this together about a year ago...

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To connect the bolt I've drilled a hole through the barrel and threaded it. The bolt is placed into a piece of steel tube which acts as a spacer and...
15 Replies

6239 Views

Last post by spudamine
Fri Dec 12, 2008 6:42 pm
Gas spring in ggdt

Last post by Hotwired
Replies: 6
by daccel » Wed Dec 10, 2008 11:58 pm

First post

What valve parameters would you use to model a sear triggered gas spring?

Last post

With the compression heating, does that cool down the same amount when it re-expands?

In a way.

In a cannon scenario the heat energy from...

6 Replies

1153 Views

Last post by Hotwired
Thu Dec 11, 2008 9:38 pm
Diaphram or piston valve gun mod

Last post by jitup
Replies: 16
by jitup » Mon Dec 08, 2008 10:59 pm
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Hello,
I am working on modifing the below gun to have a diaphram valve. I can not find any information beside the short desctription in the Wiki. I...

Last post

[MOAR POWER! ;)

Yea, I thought about that when I I went to Home Depot today, and that is what I decided to due! Glad to see we are on the same page...
16 Replies

4055 Views

Last post by jitup
Thu Dec 11, 2008 7:27 pm
Copper QEV gun w/damage pics

Last post by mark.f
Replies: 11
by skyjive » Wed Dec 10, 2008 3:31 pm

First post

This is a pretty simple but powerful pneumatic I finished a while ago, but my recent acquisition of a CO2 system really kicked it up a notch. Some...

Last post

I've used McMaster Q.E.V.'s up to 300 PSIG without failure, but I wouldn't recommend it.

11 Replies

5069 Views

Last post by mark.f
Thu Dec 11, 2008 12:34 pm
MP5K SUBHUMAN mod.

Last post by Imortal87
Replies: 18
by Imortal87 » Mon Dec 08, 2008 11:41 pm
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Just a few pics of the MP5K PDW mod I'm working on. Its based off of the TV show and move Firefly. There is a huge event in Wisconsin every year for...

Last post

trust me the next time i post it wont look a thing like the original
18 Replies

7400 Views

Last post by Imortal87
Wed Dec 10, 2008 5:44 pm
Burst Disk Cannon

Last post by SP00K
Replies: 15
by LCTChamp » Sun Nov 30, 2008 11:40 am
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I made this gun because I was bored and had most of the parts lying around. I trigger it with a 12g CO2 tire inflater. The whole gun cost under $5...

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Shrapnel isn't really an issue when PET bottles explode, they tend to tear as opposed to shattering. The best protection you need in that situation...
15 Replies

5149 Views

Last post by SP00K
Wed Dec 10, 2008 3:41 pm
ft. lbs. to PSI

Last post by D_Hall
Replies: 11
by jitup » Tue Dec 09, 2008 9:08 pm

First post

Ok I need to figure out how many psi 50 ft lbs is
acording to google
ft lbs * 12^2 = psi
so
ft lbs * 144 =psi
50 ft lbs *144= 7200 psi
Is this...

Last post

or he meant 50 bar.

And hey, how do you apply torque? With a cheater bar!

11 Replies

23101 Views

Last post by D_Hall
Wed Dec 10, 2008 9:33 am
Will this work . plans .

Last post by jackssmirkingrevenge
Replies: 6
by jakob » Tue Dec 09, 2008 2:40 am

First post

please leave a reply : ) it will use a hammer as a pilot .

Last post

In the quiet words of the virgin mary...come again?

Do you know what nemesis means? Dammit you started me off again :roll:

6 Replies

2933 Views

Last post by jackssmirkingrevenge
Wed Dec 10, 2008 1:49 am
first gun. pretty crap. its gunna get better

Last post by Baldwin1993
Replies: 14
by Baldwin1993 » Tue Dec 09, 2008 5:06 am

First post

This is my sniper. in the photos it looks dead set shit but it shoots mad. i'll upate it. at the moment its unaccurate as hell cos i got a crap...

Last post

yeah mate shit i never thought of it lol

14 Replies

4673 Views

Last post by Baldwin1993
Wed Dec 10, 2008 12:50 am
Strang looking QEV's...

Last post by Mitchza89
Replies: 15
by Mitchza89 » Mon Dec 08, 2008 11:36 pm
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I'm looking to get a QEV from this mob but I've never seen QEV's like these....

Anyone have any suggestions? I think they look so clean and neat....

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With the sear on the back, I've gone to around 200psi. I'm quite sure that you could get easily to 350psi+ and still have a perfect seal.

As far as...
15 Replies

4104 Views

Last post by Mitchza89
Tue Dec 09, 2008 9:56 pm
pressure guage (0-300 psi range)

Last post by MrCrowley
Replies: 5
by SANGER » Mon Dec 08, 2008 3:54 am

First post

Hey there, I was just wondering if anyone is using a air pressure guage with a 0-300 psi range on their cannons? I have one off a air tool which has...

Last post

Sorry i should have mentioned i'm located in sydney, Australia. I have been to the local welding supply but he doesn't have what i am looking for. I...

5 Replies

1498 Views

Last post by MrCrowley
Tue Dec 09, 2008 9:06 pm

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