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

907229 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

442692 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

391030 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

619361 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...

Last post

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

329023 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

78689 Views

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

Topics

Arrow Shooting Full Auto Coke Bottle Gatling

Last post by iknowmy3tables
Replies: 6
by JoergS » Sat Jan 30, 2016 8:11 am

First post

OK, I haven't posted here for a while (used to be quite active in the non spudgun related sub), but this new toy of mine seems to belong here.

I...

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I did not know Joerg Sprave posted here, I was more active here in the late 00's I'm not sure of it's status now but back then I' would say without a...

6 Replies

4622 Views

Last post by iknowmy3tables
Fri Feb 12, 2016 6:11 pm
Do I need a normally open or normally closed 2/3way valve?

Last post by iknowmy3tables
Replies: 3
by AlfiePB IanB » Thu Jan 28, 2016 4:53 am

First post

Hi, I want to use a 2/3way valve to fill and then fire my qev based launcher, do I need a normally open or closed 2/3way valve?

Many thanks Ian

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the thread is old but I wanted to share some knowledge if anyone searches this. you do need a normally open valve but many valves may not say. The...

3 Replies

2448 Views

Last post by iknowmy3tables
Fri Feb 12, 2016 2:14 am
multi barrel tennis ball launcher

Last post by funkymonkey
Replies: 3
by funkymonkey » Wed Feb 03, 2016 1:11 pm

First post

Hi all.

Am working on a little project which a have a few questions about. Hope you don't mind me asking.
So its using very much the same theory as...

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Cheers Jimmy. The tennis ball will only need to travel in a nice 40 or 50 yard arc so doesn't need to be a distance machine like I know others aim...

3 Replies

2157 Views

Last post by funkymonkey
Sat Feb 06, 2016 4:56 pm
New Member Marble shooter

Last post by jeroentune
Replies: 17
by jeroentune » Thu Nov 19, 2015 3:23 pm
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Hello fellow pressure triggers ..

I am new here and i have still tons of material to read and discover but i just wanted to say hello,

My goal is...

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Well back again ..

update .. played a bit with my 2 red fire bottles and added a 20 inch barrel .. just to see what 120 psi would do wheni fire a...
17 Replies

7335 Views

Last post by jeroentune
Mon Feb 01, 2016 1:09 pm
Gunfire Sound Generator

Last post by AlfiePB IanB
Replies: 5
by Digital941 » Fri Dec 18, 2015 5:16 am

First post

Hi Guys,

I am new to the forums, so hello! I would like to build a Gunfire Generator to sound like an AR15 shot. This is to somehow be mounted to a...

Last post

Pulsing a 1/2 or 3/4 inch solenoid (can't remember size) with nothing attached to it and 60bar makes quite a bang, doubt it sounds like an AR15 but...

5 Replies

2860 Views

Last post by AlfiePB IanB
Sat Jan 30, 2016 12:07 pm
At a loss here... Pressurizing my cannon

Last post by bravootome
Replies: 11
by Alex345 » Sun Jan 17, 2016 7:04 am

First post

Here's my problem; I'm building a +-25 bar cannon with a rather large chamber and small pilot volume, so using any type of manual pump would have a...

Last post

And it works! Just shot a rolled up washcloth at almost 20 bars! Made the cannon jump up quite a bit too :D

It fills the very small pilot in a snap,...

11 Replies

9104 Views

Last post by bravootome
Tue Jan 26, 2016 11:53 am
.50 Caliber Copper Air Gun

Last post by cammyd32
Replies: 3
by LivingSavage » Tue Jan 19, 2016 12:59 am

First post

I am currently working on building an air gun, and I just wanted to get some advice, and a few more pair of eyes on this project before I take it all...

Last post

The smaller the better with regard to that! That volume of gas in spudding terminology is referred to as the 'pilot volume' the smaller it is the...

3 Replies

4082 Views

Last post by cammyd32
Wed Jan 20, 2016 4:33 pm
Larger 3/4" QEV piloted by 1/4" QEV

Last post by AlfiePB IanB

by AlfiePB IanB » Fri Jan 15, 2016 4:01 pm

A bit of background I have been using a Parker 3/4 valve at 400psi max (bit scary) but now want to built one using a Humphreyas heard many positive...

0 Replies

5440 Views

Last post by AlfiePB IanB
Fri Jan 15, 2016 4:01 pm
Stainless and Painless UPDATE! Major Changes + VIDEO

Last post by auxiliary
Replies: 11
by auxiliary » Mon Jan 04, 2016 12:12 am

First post

a.JPG Hi Spudders!

Abstract:

I want to show you all my latest pneumatic cannon! Here's a brief overview. The valve is a piston type housed in a...

Last post

I remember most the handle on Copperhead Prime made out of polymorph. The trouble is the low melting temperature. I wanted something that was more...

11 Replies

7166 Views

Last post by auxiliary
Tue Jan 12, 2016 9:57 am
Hammer Valve Question

Last post by Gun Freak
Replies: 4
by 1nxtmonster » Sun Dec 27, 2015 4:33 pm

First post

I am planning on using this push-button valve as a hammer valve:

My question is can the input and output ports be reversed? E.g. does it matter...

Last post

I used that one for my hammer valve gun... I do not believe it can be used either way though. Considering that it gets harder and harder to open as...

4 Replies

3698 Views

Last post by Gun Freak
Thu Jan 07, 2016 1:05 pm
19 round Fully auto Gatling gun concept (To be Built)

Last post by mark.f
Replies: 3
by mrphilip246 » Mon Jan 04, 2016 11:23 pm

First post

gatling air cannon.png 19 barrel.6.png

the base model is a potato cannon on its own. I will briefly describe how it works, but for more...

Last post

What would be far more effective is to link each cannon's pilot to the last cannon's chamber .
Your rate of fire will then depend to an extent on...

3 Replies

3120 Views

Last post by mark.f
Thu Jan 07, 2016 10:06 am
how does a qev work??

Last post by Gameover
Replies: 13
by mopherman » Wed Mar 07, 2007 5:41 pm

First post

could sombody please explain how a qev works? i looked in the wiki but i still dont get what the second port is for

Last post

Hey people I want to ask do I have to pump every time I will shot or? I mean If I put an air compressed bottle on the cord npt ball valve that goes...

13 Replies

10451 Views

Last post by Gameover
Fri Jan 01, 2016 4:23 pm
new year

Last post by jackssmirkingrevenge
Replies: 1
by bravootome » Wed Dec 30, 2015 10:56 am

First post

I wish you all a happy new year,
I want you spuders that replied to my topics that i think about you all, and how you prepare yourself for the...

Last post

That was quite a story :) Happy New Year to one and all

1 Replies

1793 Views

Last post by jackssmirkingrevenge
Fri Jan 01, 2016 10:51 am
Launcher with dual humphrey QEV

Last post by APB
Replies: 2
by APB » Sat Dec 12, 2015 5:10 pm

First post

I have searched but been unable to find it, the member used a larger QEV which was piloted by a smaller Humphrey QEC, anyone remember the users name...

Last post

Thanks for reply, I will do some searching.

I managed to find the cannon, it had just been posted as a response so unsure if it was actually theirs.

2 Replies

1647 Views

Last post by APB
Wed Dec 16, 2015 12:36 pm
PCP Pumps

Last post by jackssmirkingrevenge
Replies: 6
by n05gr0th » Mon Dec 14, 2015 8:26 pm

First post

I'm looking for a good multi-stage PCP pump capable of filling an approx 20 CI chamber to 35 bar/500 psi in under 2 minutes.

So far this seems like...

Last post

I... I used google :oops:

6 Replies

3642 Views

Last post by jackssmirkingrevenge
Wed Dec 16, 2015 7:16 am
agriculture aplication.

Last post by mrfoo
Replies: 4
by bravootome » Fri Dec 11, 2015 2:02 am

First post

I am in. I forgot my password for few months, but i am in.
I think i had asked for this once but i cant find the topic, so
I need a cannon to...

Last post

a relay doesnt stay open 1-2 seconds
A relay will stay open as long as you're energising the coil.

You'll be lucky to find a how to for this....

4 Replies

2857 Views

Last post by mrfoo
Sun Dec 13, 2015 3:58 pm
Pneumatic Pressures: The Safe, The Possible, And The Crazy

Last post by jackssmirkingrevenge
Replies: 37
by mako » Wed Nov 18, 2015 1:16 pm
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Hey, guys; I've been playing around with pipes, o-rings, solder, the Internet, and the GGDT trying to figure out how to get maximum ft/lbs from...

Last post

Shallow pass with a 3/8 ball mill.
37 Replies

16419 Views

Last post by jackssmirkingrevenge
Wed Dec 02, 2015 3:33 pm
Quick simple ball vaulve project.

Last post by jackssmirkingrevenge
Replies: 9
by 200BAR » Mon Nov 02, 2015 10:46 am

First post

Made this a while back as an afternoon project with my boys from used plumbing bits that were lying in my shed so material cost is basically nothing....

Last post

Good luck with it, it's an opportunity to go into the intricacies of domestic plumbing and solvent welding with the boys :)

9 Replies

5081 Views

Last post by jackssmirkingrevenge
Tue Dec 01, 2015 8:36 am
Question: Airsoft Silent Sniper

Last post by jackssmirkingrevenge
Replies: 10
by ace35 » Thu Aug 31, 2006 11:43 am

First post

Ok first off NEWBIE. But I want to have an either single shot, or semiauto style Airsoft Sniper that is almost completely silenced. I was hopeing you...

Last post

6 years is a long time :)

either single shot, or semiauto style Airsoft Sniper that is almost completely silenced

If you want quiet, low pressure...

10 Replies

4387 Views

Last post by jackssmirkingrevenge
Sat Nov 21, 2015 10:43 am
What is the mechanism of a cannon ? PHOTOS

Last post by johnydevil
Replies: 4
by johnydevil » Tue Nov 17, 2015 5:31 pm

First post

Hello
I need help because I do not know how the mechanism inside?
Please help make the image looks like exactly the mechanism , the compression...

Last post

I do not have the cannon. I ask if my idea will work ?

4 Replies

1613 Views

Last post by johnydevil
Sat Nov 21, 2015 10:39 am
Random idea - possible ridiculous power / velocity.

Last post by jackssmirkingrevenge
Replies: 16
by Tep » Sun Mar 29, 2015 8:55 am
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I had a random idea the other day while fiddling around with the shroud / silencer on my gun.

Basically what I am thinking is:

The air to charge...

Last post

It simply slows down quicker, it's not going to be going at the sort of velocity that results in the superheating you would observe on an object from...
16 Replies

9415 Views

Last post by jackssmirkingrevenge
Wed Nov 18, 2015 1:57 pm
dual chamber - tennis ball launcher

Last post by jackssmirkingrevenge
Replies: 7
by MadMax86 » Mon Nov 09, 2015 8:53 pm

First post

Hello,

First time builder and i could use some help with calcs. I've tried downloading the GGDT and couldn't open it up.

all PVC...
ID of the...

Last post

Here's a simulation for a launcher with a 1 sprinkler valve (modded for pneumatic actuation), 2 foot barrel and 1 foot chamber. You can see the...

7 Replies

2135 Views

Last post by jackssmirkingrevenge
Tue Nov 17, 2015 8:04 am
Multi-shot candy launcher

Last post by mark.f
Replies: 3
by voi9viper » Sat Nov 07, 2015 10:23 pm

First post

I need to build a few candy launchers, which will use a sabot (plastic cup) and be fired veriically to avoid any gobstopper projectile injuries, or...

Last post

There is an example of a hybrid using homemade solenoid valves for fueling but they're not three ways. I suppose it wouldn't be too difficult to roll...

3 Replies

2862 Views

Last post by mark.f
Thu Nov 12, 2015 1:33 am
1/2" QEV + 1/2" Slide-valve - first multi-shot build problem

Last post by voi9viper
Replies: 5
by shrimp » Tue Jan 06, 2015 7:26 am

First post

Greetings everyone, short time lurker, first time poster here.

In the past I have built a few combustion cannons and couple of sprinkler valve...

Last post

I made one of these from comercial parts for the QEV and slide valve. I don't know how long your barrel is, but I think about 6 of 2 PCV pipe, one...

5 Replies

4665 Views

Last post by voi9viper
Mon Nov 09, 2015 8:10 am
Japan Made Pneumatic Cannon "Exhaust Cannon"

Last post by wyz2285
Replies: 11
by Shyasuna » Sat Oct 24, 2015 2:59 pm

First post

Hi, all. I am a grad student of nuclear engineering in Japan. And I am an administrator of UZUMA HEAVY INDUSTRIES.

I'm very glad to see this...

Last post

The MK.12 looks like a pengun :lol: Jack would be proud :D
Of course a coupling would be a better pilot than a schrader valve. Still, very impressive...

11 Replies

16508 Views

Last post by wyz2285
Mon Nov 02, 2015 12:59 pm

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