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

901240 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

438214 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

372322 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

616106 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

327841 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

78106 Views

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

Topics

Copper shot gun

Last post by BlackH
Replies: 15
by BlackH » Wed Oct 08, 2008 2:35 am
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This is a Shotgun i made Works at 200 psi and the copper pipe under the barrel has 2 connections to the chamber to increase the volume of the chamber...

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Its 15 mm and here it is its the same as my previous gun

My previous gun

And The ammo
15 Replies

8445 Views

Last post by BlackH
Thu Oct 09, 2008 7:10 am
semi-valveless design

Last post by psycix
Replies: 9
by FishBoy » Tue Oct 07, 2008 3:48 pm

First post

this is just a theory that's been floating around in my head for a while. A valve on th end of the barrel is opened and the unrestricted air flow...

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This should be possible in some way. But then instead I would use a burst disk, which could also be placed behind the projectile but then it wont be...

9 Replies

2718 Views

Last post by psycix
Wed Oct 08, 2008 10:15 am
air impact stops sprinkler valve from loading

Last post by keep_it_real
Replies: 9
by keep_it_real » Tue Oct 07, 2008 12:14 am

First post

My sprinkler valve won't accept air when I open a slide valve. The sprinkler valve is set up in semi-auto configuration so air is coming in the top....

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If I pump it slowly up to 50 psi it works fine. So it's almost definitely a problem with impact. I also tried putting a small piece of tubing inside...

9 Replies

3050 Views

Last post by keep_it_real
Tue Oct 07, 2008 11:11 pm
Measuring valve opening speed

Last post by DYI
Replies: 11
by dilweed » Mon Oct 06, 2008 1:22 pm

First post

Is it possible to measure the speed of a spring and hook activated ball valve opening. Could you record an audio file, open the valve by pulling the...

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You plan on opening a ball valve in a couple milliseconds?

Good luck with that.

You could open a ball valve that fast... once.

If you want...

11 Replies

2512 Views

Last post by DYI
Tue Oct 07, 2008 6:35 pm
99 % done artillery burst disk

Last post by psycix
Replies: 20
by Demon » Fri Oct 03, 2008 1:06 pm
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So here is my 99 % done burst disk(i only need the female part of the camlock to complete it)

It work with burst disk(DUH!) holded with a camlock....

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I bet you have said that more often in the past :P

And then when you are building that sprinkler cannon, you will think: im going to build a piston...
20 Replies

4043 Views

Last post by psycix
Tue Oct 07, 2008 11:40 am
how to best burst a burst disk?

Last post by jackssmirkingrevenge
Replies: 19
by JDP12 » Wed Oct 01, 2008 11:55 am
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hey all- I've got a bunch of paintball games coming up, and i've decided to build a grenade launcher/shotgun style gun. I've decided to use a burst...

Last post

a ceramic disk to seal the chamber and a needle rammed by a solenoid to burst it.

Bone china shotgun, what a concept! :D
19 Replies

3843 Views

Last post by jackssmirkingrevenge
Mon Oct 06, 2008 11:49 pm
6"x3" coaxial launcher [now with video!]

Last post by SpudUke5
Replies: 23
by SplatteredStarch » Fri Oct 03, 2008 6:27 pm
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This spring it came up in conversation with a new friend that I once upon a time was into building potato launchers. I dug my old 4 x2 coaxial out of...

Last post

That was the biggest QEV I could get quickly, but if it is hindering performance, the back of the gun has 1.5 NPT female threads.

Well, there are...
23 Replies

5715 Views

Last post by SpudUke5
Mon Oct 06, 2008 7:42 pm
Matthew Wandels Airgun

Last post by Ragnarok
Replies: 6
by dilweed » Mon Oct 06, 2008 12:22 pm

First post

This following article inspired to begin spudding, so I would like to share it. The power is amazing considering its a ball valve gun. He can get...

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That's not it, there was some Aussie - simo I think - some months ago who claimed the launcher was his own when it clearly wasn't.
That may well be...

6 Replies

1586 Views

Last post by Ragnarok
Mon Oct 06, 2008 2:16 pm
burst disk c:b

Last post by psycix
Replies: 6
by jon_89 » Sun Oct 05, 2008 12:21 am

First post

What would be a good c:b for a pnuematic burst disk?

Last post

If you...

want the gun to be silent: low
have an air compressor: high
have to hand-pump it:low
want a maximum power: high
want good portability:...

6 Replies

1376 Views

Last post by psycix
Mon Oct 06, 2008 10:27 am
QEV problem

Last post by NoXi
Replies: 25
by NoXi » Fri Oct 03, 2008 8:42 pm
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Hey guys, i got my 1/4 qev and just finished making my .177 sniper. I hook up my tank to it, which is pressurized at around 170-200) and it starts to...

Last post

ITs not leaking that much. It just leaks a little but when i open and close my ball valve breech, it stops the leak
25 Replies

6822 Views

Last post by NoXi
Sat Oct 04, 2008 5:35 pm
BACK IN BUSINESS!!!!!!!! The Intimidator Returns

Last post by biggsauce
Replies: 53
by biggsauce » Sun Apr 13, 2008 12:51 pm
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Hey yall I've had this idea in my head for awhile, it just took finding and buying the right regulator. This is what I call The Intimidator Heavy...

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You, my friend have one horse shoe too many! :D

Be sure you treat that girl to a night on the town to show that you're properly appreciative....
53 Replies

23967 Views

Last post by biggsauce
Fri Oct 03, 2008 1:09 am
Some questions about burst disk...

Last post by Demon
Replies: 23
by Demon » Tue Sep 30, 2008 3:34 pm
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I want to make a burst disk spudgun(they are pretty powerful)

And i wanna know:

Does a cam lock make a good burst disk holder?

Does someone knows...

Last post

I just camed back of the Rona shop and buyed evrything to make my burst disk mortar exept the femal part of the camlock, the one with the levers....
23 Replies

6025 Views

Last post by Demon
Thu Oct 02, 2008 6:51 pm
New Fridge Compressor!

Last post by robbo@robbo
Replies: 27
by iisthemuffin » Mon Sep 08, 2008 7:52 pm
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Hey i just got a fridge compressor! Im so excited! My uncle found it sitting in an alley by his house.

Im not sure whats going on with it though. I...

Last post

the oil coming out of it is to stop the piston seizing up, it the same as an air con compressor on a car but just runs colder, unless you oil it...
27 Replies

7541 Views

Last post by robbo@robbo
Thu Oct 02, 2008 4:48 pm
Sprinkler Valve honks, still want to use solenoid

Last post by rastetter
Replies: 7
by rastetter » Tue Sep 30, 2008 6:14 pm

First post

I just bought a new valve, and it honks like crazy. I thought it was cause it wasnt opening all the way, but i read the trouble shooting and it says...

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at 100psi, it does not open with 9volts, 12 volts makes it honk throughout the whole release, as if its not opening all the way (But i dont know if...

7 Replies

2216 Views

Last post by rastetter
Thu Oct 02, 2008 4:24 pm
Pen Gun Wont Seal

Last post by jackssmirkingrevenge
Replies: 4
by spudkilla224 » Thu Oct 02, 2008 1:44 pm

First post

hello, i made a pen gun like jacks, and it wouldn't leak air out the barrel when i used my lips to test the seal, but when i use my bike pump, or the...

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i know the piston moves foward when air is put through the schrader valve. but when i take the air pump source off the schrader all the air comes...

4 Replies

1346 Views

Last post by jackssmirkingrevenge
Thu Oct 02, 2008 3:27 pm
Pics Update 1/2" copper cannon

Last post by Lentamentalisk
Replies: 45
by Lentamentalisk » Mon May 19, 2008 10:13 pm
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My QEV from McMasters arrived today, and after hours of fiddling with fittings trying to get them to seal, I finally got my first non-sprinkler-valve...

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so I know this thread has been dead over the summer, but I thought I should thank all of you for all of your help with everything. I ended up getting...
45 Replies

15858 Views

Last post by Lentamentalisk
Wed Oct 01, 2008 11:38 pm
What is your air source?

Last post by Mr.Sandman
Replies: 30
by DeathBlade » Sun Aug 24, 2008 8:12 pm
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Well I finally finished my OnBoard Air compressor for my jeep, so I can get some off road spudding in. Its a old mopar RV2 AC compressor from a 71'...

Last post

didnt i already post a topic like this?
30 Replies

9816 Views

Last post by Mr.Sandman
Wed Oct 01, 2008 7:29 am
surface area for air to push against?

Last post by psycix
Replies: 11
by JDP12 » Fri Sep 26, 2008 7:31 am

First post

Well my gun is 90 percent done, with everything sealing and the chamber filling up properly, but there's one problem and thats that the piston isn't...

Last post

The amount of piston area exposed IS the piston diameter surface minus seat diameter surface.

11 Replies

1092 Views

Last post by psycix
Tue Sep 30, 2008 4:00 pm
Piston Valve NOOB

Last post by Floyd
Replies: 12
by pat656 » Mon Sep 29, 2008 8:43 pm

First post

I know this is a stupid question, but how to you make a piston valve that is easy to build, but able to wiithstand ~100 psi? I want to make a gun...

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That's one reason we don't like to spoon feed. It shows a lack of persistence and focus on your part if you're happy to get a recipe and a box of...

12 Replies

3433 Views

Last post by Floyd
Tue Sep 30, 2008 7:56 am
sprinkler valve battery

Last post by Demon
Replies: 8
by Demon » Sun Sep 28, 2008 2:55 pm

First post

I am building a spudgun with an anti siphon valve and i need an electric actuation...

But i dont wanna pay 20 $for 3 9volts battery's so i...

Last post

Should work, though I would like to recommend a pneumatic mod to you:
-No batteries
-Increased power

I already try to mod ( i did it two time )...

8 Replies

1555 Views

Last post by Demon
Mon Sep 29, 2008 3:20 pm
I'm not sure if I've ever been so happy to see a gun fail :D

Last post by psycix
Replies: 7
by JDP12 » Wed Sep 24, 2008 9:43 pm

First post

So i made a new washer that fits perfectly in the barrel and fired it up to around 50 PSI... and believe it or not.... IT SEALED! and then the washer...

Last post

Then use something else as a body.
Something with a flat surface on the front...

7 Replies

1324 Views

Last post by psycix
Mon Sep 29, 2008 9:08 am
Is mod really worth it?

Last post by clide
Replies: 9
by Demon » Sat Sep 27, 2008 7:08 pm

First post

I am going to build an spudgun with an 3/4 anti siphon sprinkler valve:

1.5 inch x 2 foot chamber

1.25 x 3 foot barrel

3/4 inch anti siphon...

Last post

I would say mods are definitely worth it although the exact % increase in power will depend on your ammo.

Also if you ever get another sprinkler...

9 Replies

1897 Views

Last post by clide
Sun Sep 28, 2008 6:18 pm
Need a simpler solution to piston valve problem

Last post by mark.f
Replies: 52
by McThunderThighs » Sat Sep 13, 2008 11:29 pm
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Hey all! A bunch of guys and I got an assignment to build a potato gun (formally a tennis ball gun) and since we have a couple months and it is...

Last post

That's a bad practice. Could get an infection.

I love this launcher except for the DWV, but that topics been thrashed dead and gone so let's...
52 Replies

13934 Views

Last post by mark.f
Sun Sep 28, 2008 8:54 am
1.5 inch sch 40

Last post by mark.f
Replies: 11
by Anon » Wed Aug 30, 2006 7:15 pm

First post

Ok so I bought some fittings and 1.5 inch sch 40 for my 1st pneu I will be building in september and was wondering what length do most of you use so...

Last post

In other news, Google literally will provide you the answer, lock stock and barrel.

11 Replies

3963 Views

Last post by mark.f
Sun Sep 28, 2008 8:51 am
Serviceable coaxial

Last post by noname
Replies: 9
by Demon » Tue Sep 23, 2008 6:47 am

First post

I seen a lot of people making serviceable coaxial but i dont understand how...

If i was using male and female adapter, there will be a lot of dead...

Last post

It is difficult to build a cannon with a diaphragm that doesn't need to be reset every few shots.

I managed to nail it first try without any hassle...

9 Replies

1690 Views

Last post by noname
Sun Sep 28, 2008 8:42 am

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