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

1125248 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

552392 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

821306 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...

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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

967195 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

374962 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

92425 Views

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

Topics

QEV Cascade

Last post by Slauma
Replies: 13
by Slauma » Mon Mar 01, 2010 4:48 pm

First post

Anyone ever tried cascading 2 or 3 QEVs in a series? It seems to me like it would be useful for piloting a large area with a very small (or slow)...

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I wish I had my camera so I could upload a video.

I use the 3/4 QEV to pilot a 2 piston valve (PVC tee). The blowgun is not enough to pilot it with...

13 Replies

4327 Views

Last post by Slauma
Tue Mar 02, 2010 8:03 pm
What's the fastest Open/Close electric valve for 150psi ?

Last post by tatfree
Replies: 12
by tatfree » Mon Mar 01, 2010 10:07 pm

First post

Hey guys first post so be kind :lol:

After a week of Googlefu and researching Paintball guns, T-sirt cannons, spear guns, potato guns and air...

Last post

It's linked in my sig.

Ummmm Duhhh...Geeeez I looked everyplace but the obvious. Guess I'm loosing it in my old age :roll:
Thanks,I'll check it...

12 Replies

3660 Views

Last post by tatfree
Tue Mar 02, 2010 3:28 pm
First Successful 2" Piston Valve Gun (Gun Name Pending)

Last post by ntiemeier
Replies: 21
by ntiemeier » Mon Mar 01, 2010 10:48 am
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I Created this cannon based off of MrCrowley's SGA Golf Ball Gun but made some of my own tweaks, mods, and style behind it. So PROPS to MrCrowley for...

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Water is going to drain out of a 2 hole much faster than a 3/4 hole, so yeah it does matter unless you have 10' or so long barrels. :P

Well that...
21 Replies

6351 Views

Last post by ntiemeier
Tue Mar 02, 2010 8:59 am
What's QEV short for ?

Last post by jackssmirkingrevenge
Replies: 4
by tatfree » Mon Mar 01, 2010 10:53 pm

Newbie here . Keep reading it in posts but am clueless what it means ?

Seems it's something that's used with valves .

4 Replies

15090 Views

Last post by jackssmirkingrevenge
Tue Mar 02, 2010 2:35 am
Compact 1" Diameter Co-Ax

Last post by Lockednloaded
Replies: 14
by Lockednloaded » Sun Feb 28, 2010 7:48 pm

First post

Compact 1 Diameter Co-Axial Gun

This cannon was built last year, it was my first piston valved cannon. At the time i had a large combustion and a...

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ok, good. It helps A TON with the pilot noise, and is amazingly simple. I didn't plan for it or any thing, i just had a spare 1/2 pipe nipple and a...

14 Replies

6232 Views

Last post by Lockednloaded
Mon Mar 01, 2010 10:10 pm
QEVs: A-P-R?

Last post by Big-E
Replies: 6
by timebmb757 » Sat Feb 27, 2010 3:43 pm

First post

Now Im going to wager a guess here and say that P means Pilot, but what do A and R mean? Which one connects to the pressure chamber and which goes to...

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Regarding the markings on the QEV:

P usually means Pressure (or pressure source, IE your air line)
A is for Air Cylinder (or Actuator), As Brian...

6 Replies

2832 Views

Last post by Big-E
Mon Mar 01, 2010 11:49 am
what to build ?

Last post by iknowmy3tables
Replies: 12
by matti » Sat Feb 27, 2010 6:58 am

First post

Hi

My english is not very good, so I put it short..

I need some good ideas what to build.. :lol:

I have been thinking semiauto paintball gun or...

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$1000 wat dat fu ngahh whaaaaaaa, that's the cost of a high end computer, how is that possible, that can't be right, for that money you could use an...

12 Replies

9965 Views

Last post by iknowmy3tables
Sun Feb 28, 2010 11:44 pm
Non Internet store to buy a QEV

Last post by Gun Freak
Replies: 4
by Gun Freak » Sun Feb 28, 2010 7:39 pm

First post

Ok I know there was a thread on this but they were talking about like Fastenals and stuff all online. I want to know if there is a store where I can...

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yep I did that. I found a near store.

4 Replies

2345 Views

Last post by Gun Freak
Sun Feb 28, 2010 9:17 pm
piston valve help

Last post by ramses
Replies: 5
by sp1ke » Fri Feb 26, 2010 8:47 pm

First post

i am making a piston valve for my latest sniper rifle and have been having some trouble

i cant find any hose barbs that will work, what can i use...

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I will have to pull a tech and direct you to my piston hybrid...

except I have no pics of the valve...

Anyway, I was facing the same issue as you,...

5 Replies

2088 Views

Last post by ramses
Sat Feb 27, 2010 9:57 pm
What affects the Tone of the gun?

Last post by ramses
Replies: 20
by owmatooth » Fri Feb 19, 2010 8:08 pm
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thanks for taking a second...

I'm new to this and couldn't see an answer while searching the forum, so I thought I'd throw my question out there....

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Ok, I appreciate the replies, and wanted to throw out another observation-

My barrel is 24 inches, when I load a projectile, and push it down the...
20 Replies

4846 Views

Last post by ramses
Sat Feb 27, 2010 9:44 pm
Threaded pipe question.

Last post by Moonbogg
Replies: 6
by timebmb757 » Thu Feb 25, 2010 5:45 pm

First post

Never having used threaded pipe for any sort of pressure-holding project, I have a question:

Should I simply put thread tape on the fittings and...

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DR linked it, but I will explain simply what happens. Sometimes the threads bind together permanently due to friction and other factors. It doesn't...

6 Replies

2820 Views

Last post by Moonbogg
Fri Feb 26, 2010 2:49 am
Pneumatic Catapult

Last post by bighead33
Replies: 9
by Gun Freak » Tue Feb 23, 2010 6:39 pm

First post

I was thinking about a catapult powered by a pneumatic gun, basically it would be a regular air tank with a ball valve or another type, and on the...

Last post

i know what you mean but i wold like to see a drawing or maybe you could work some thing out on paint.

9 Replies

4699 Views

Last post by bighead33
Thu Feb 25, 2010 12:51 am
.25 cal Coax Rifle

Last post by maverik94
Replies: 18
by maverik94 » Sat Feb 20, 2010 9:25 pm
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Ok, I actually built this gun about 8 months ago. It was my first successful piston-valved gun after my unseccessful pengun prototype:

Anyway,...

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Yeah, i suppose it could work. I have a better, non-coaxial design that will be better than coaxial. Just as powerful, but can be breechloading....
18 Replies

9138 Views

Last post by maverik94
Wed Feb 24, 2010 6:27 pm
Spudding on the Slopes

Last post by D_Hall
Replies: 12
by rcman50166 » Fri Feb 12, 2010 12:20 am

First post

Would you imagine that? It's called the Avalauncher

Last post

is there a particular amount of performance that 100% represents,
Generally 100% would be state of the art.

12 Replies

3489 Views

Last post by D_Hall
Wed Feb 24, 2010 3:25 pm
Air cylinders and safe pressures

Last post by jimmy101
Replies: 8
by chinnerz » Tue Feb 23, 2010 6:33 am

First post

Hey guys
I have been getting mixed responses in my research and I would gladly appreciate any input into this.

I need to know the maximum safe/ sane...

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I doubt they would use O2. would you walk into a fire with a tank of pressurized oxidizer strapped to your back? :D :D
How do you figure?

A tank of...

8 Replies

2933 Views

Last post by jimmy101
Wed Feb 24, 2010 3:02 pm
955 fps!!!

Last post by boyntonstu
Replies: 9
by boyntonstu » Mon Feb 22, 2010 1:25 pm

First post

955 fps!!

10d nail with 10 Gauge wad at 300 psi. First ProChrono shot.

Home made light kit. I used bulbs and sockets salvaged from a...

Last post

Muahh ahhh ahhh! The photoshop bandit strikes again!

And you should see the hole through the garage wall!

9 Replies

2672 Views

Last post by boyntonstu
Wed Feb 24, 2010 2:48 pm
Update on Gun Freak's Co-Ax

Last post by Gun Freak
Replies: 8
by Gun Freak » Sun Feb 21, 2010 6:31 pm

First post

Here's a new video, and also a quick view of my first pneumatic, which I never posted on SpudFiles.

Last post

Haha that's kinda funny. I've never seen him before :P

8 Replies

3344 Views

Last post by Gun Freak
Tue Feb 23, 2010 6:19 pm
All in one valve

Last post by iknowmy3tables
Replies: 44
by john bunsenburner » Sat Feb 20, 2010 5:25 am
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The search for a semi-automatic valve has continued for a long time. Several members on this forum have made advancements in the area producing more...

Last post

ball valves use balls so the issue I've been trying to address about curved seals doesn't apply, they use something more like rubber washers, and...
44 Replies

12945 Views

Last post by iknowmy3tables
Tue Feb 23, 2010 4:20 pm
where to buy a qev?

Last post by eriko1337
Replies: 13
by eriko1337 » Mon Feb 22, 2010 2:47 am

First post

so for my new qev cannon i need a qev that is 3/4 i cant find them in any good place iv tried
but it turned out to be really expensive. iv also...

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haha yeah a truck full of qevs. why they even sell them if u only can buy a 1000 guess no one needs 1000 qevs. so i try find something else or get...

13 Replies

20566 Views

Last post by eriko1337
Tue Feb 23, 2010 11:51 am
Experience in cascaded air compressors?

Last post by maggotman
Replies: 20
by boyntonstu » Wed Feb 03, 2010 5:09 am
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Have you experience in feeding a refrigerator or a/c compressor with another?

What was the input/output pressures?

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dont be i thought it was quite funny to be honest
20 Replies

6959 Views

Last post by maggotman
Mon Feb 22, 2010 5:39 pm
main valve + loading mech. as one unit

Last post by POLAND_SPUD
Replies: 30
by POLAND_SPUD » Sat Feb 13, 2010 5:44 pm
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The idea is to combine both the main valve and loading mech into one block of aluminium.

The end product would be a relatively small aluminium...

Last post

I think it's almost ready...

for obvious reasons I decided to use metric O-rings
30 Replies

12635 Views

Last post by POLAND_SPUD
Mon Feb 22, 2010 5:00 pm
Looking to build an airsoft mortar

Last post by timebmb757
Replies: 6
by timebmb757 » Sun Feb 21, 2010 10:32 pm

First post

Similar to this one:

Now, by the looks of it, this one uses a QEV valve with some sort of trigger that I cant really identify due to the quality...

Last post

How he gets multiple shots is... He has a co2 source connected to the other side of the slide valve. The hose is hidden behind his arm......

6 Replies

3227 Views

Last post by timebmb757
Mon Feb 22, 2010 4:28 pm
My First..Working Cannon with Changable barrels

Last post by clemsonguy1125
Replies: 10
by ntiemeier » Sun Feb 21, 2010 5:55 pm

First post

After many many do overs I finally came up with a working model. It's a pretty basic cannon but performs exceptionally well. I realized that I was...

Last post

You will get a large increase in power from going with a piston valve, also way make a copper piston valve just go with pvc, ive housed one in a 1...

10 Replies

4321 Views

Last post by clemsonguy1125
Mon Feb 22, 2010 3:58 pm
Pepsi round vs 3/4" barrel.

Last post by jackssmirkingrevenge
Replies: 3
by boyntonstu » Sun Feb 21, 2010 7:06 pm

First post

Force = mass x acceleration

Acceleration = Force/mass

Pressure = Force/Area

Force = Pressure x Area

Given these 2 fundamental laws of Physics...

Last post

This basic principle is exactly why discarding sabot projectiles work so well.

One thing you have to consider though is that a bigger barrel needs a...

3 Replies

1052 Views

Last post by jackssmirkingrevenge
Mon Feb 22, 2010 1:22 am
Maglite Mini

Last post by cannonmaster
Replies: 32
by MrCrowley » Wed Jan 27, 2010 11:31 pm
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Made this in a few hours today after I got the idea last night. Basically it's just a Mini Maglite gutted of its components and refitted with a...

Last post

neet gun awesom idea and great personal defence wepon
32 Replies

19585 Views

Last post by cannonmaster
Sun Feb 21, 2010 7:04 pm

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