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

1671380 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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First post

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

755756 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

983260 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

1166244 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

466921 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

131633 Views

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

Topics

Highest pressure on a hand-powered pump?

Last post by Fnord
Replies: 8
by saefroch » Sat Oct 23, 2010 8:22 pm

First post

No, I don't mean to imply that there is a maximum pressure one can reach with a hand-powered pump. If there is one it's insane.

The question I have...

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The highest I've gotten with a homemade pump is 900 psi (single stage 1/2 copper tube). It took awhile though since I think I had a dead space...

8 Replies

4772 Views

Last post by Fnord
Sun Oct 24, 2010 1:49 pm
Ring Piston

Last post by Secret Squirrel
Replies: 4
by Secret Squirrel » Sat Oct 23, 2010 11:14 pm

First post

What originally got me into spudding was building a launcher for airsoft. Originally I wanted to build an AT-4, but unable to find a cheap spent...

Last post

lozz, I've been going insane for a couple months just trying to figure out how to put it together.

Poland, I already tried the combustion idea, but...

4 Replies

1745 Views

Last post by Secret Squirrel
Sun Oct 24, 2010 11:25 am
Innexpensive, 200 psi tank

Last post by Technician1002
Replies: 18
by High-PSI » Fri Oct 22, 2010 5:49 pm
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Hey Guys,

I wanted to share a picture of the tank I just built for a 1-1/4 inch bore cannon. It consists of two steel hemispheres from Wagner...

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Try a 3 inch at 100 PSI sometimes. I got a bruise tossing a Gatorade.
18 Replies

6502 Views

Last post by Technician1002
Sat Oct 23, 2010 9:36 pm
Air Chamber to Barrel Ratio?

Last post by Technician1002
Replies: 8
by nubematic0 » Fri Oct 01, 2010 10:43 pm

First post

I have everything I need to build a pneumatic launcher with a 2 inch wide chamber and a .5 inch wide barrel. I want to make it as light and wieldy as...

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The valve and it's ability for air flow plays a large part of the barrel size. This can be more important than the chamber size for larger size...

8 Replies

4873 Views

Last post by Technician1002
Sat Oct 23, 2010 10:44 am
Is my chronograph having issues?

Last post by jackssmirkingrevenge
Replies: 4
by High-PSI » Wed Oct 20, 2010 1:51 pm

First post

Hey Guys,

I have been doing a bit of velocity testing lately and I have a question for you (those who understand the math far better than I).

I...

Last post

These are the online calculators I use:

This one gives you instant results in Imperial/metric etc.

This one allows you to plot a graph of...

4 Replies

1339 Views

Last post by jackssmirkingrevenge
Sat Oct 23, 2010 1:04 am
Fridge compressor to run Micro Grinder

Last post by Technician1002
Replies: 6
by Lazyboy » Fri Oct 22, 2010 7:00 pm

First post

I need some advice on if a Fridge compressor would be able to run this micro grinder

SPEC:
70000 RPM Free Speed
3mm / 1/8 Capacity
1/4 Air Inlet...

Last post

Some of the small compressors for nail guns are in the 1/2 CFM size. My little 3 gallon 1/3 HP unit is that small. Make sure you get one large enough...

6 Replies

2619 Views

Last post by Technician1002
Sat Oct 23, 2010 12:30 am
Is a double canister setup a bad idea?

Last post by Technician1002
Replies: 7
by Guaps » Wed Oct 20, 2010 6:13 pm

First post

I have a couple used propane canisters like the one in the pic below, neither of which is big enough for what I want to do, but both combined would...

Last post

A single bottle with as large as an opening as you can make will work best. Adding the plumbing to add two bottles will lengthen the pipe between the...

7 Replies

4801 Views

Last post by Technician1002
Thu Oct 21, 2010 12:20 pm
Help With Semi Auto Ideas

Last post by lozz08
Replies: 22
by KiLlFrEnZY » Wed Sep 29, 2010 4:05 am
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My first post be nice 8)

Would anyone be so kind as in to point me in the right direction...... what im trying to do is build a semi auto Pneumatic...

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If you are not intending to shoot at people, then marbles would be a great choice. Using moderately sized marbles, you can have a detent-based system...
22 Replies

6108 Views

Last post by lozz08
Thu Oct 21, 2010 7:39 am
DIY GUN

Last post by Lockednloaded
Replies: 1
by cangying » Wed Oct 20, 2010 8:27 pm

First post

I come from china.

Edit by MrCrowley: Member does not speak English. I have advised him to use a translator for the time being.

Last post

seem like a pretty ingenious design for the parts at hand. It seems to me you are using the valve from a fire extinguisher as a hammer valve, cool....

1 Replies

2019 Views

Last post by Lockednloaded
Wed Oct 20, 2010 9:34 pm
Pneumatic QEVs on eBay.

Last post by r00kie
Replies: 39
by r00kie » Tue Oct 12, 2010 6:30 am
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G'day, I should probably also introduce myself here, I've been lurking for a few years now and learned a lot off this forum, I'd like to extend a big...

Last post

Technically the cup seal on a QEV should act as a one way valve ensuring it should actuate, but I can't tell you how much it will affect performance....
39 Replies

10449 Views

Last post by r00kie
Wed Oct 20, 2010 9:30 am
pop-off

Last post by jackssmirkingrevenge
Replies: 9
by soka » Mon Oct 18, 2010 6:45 am

First post

Hello ,hell!! i have some problems with a pop-off valve i tried to make. Usualy i ask people of my country's website ,patator.forum but we dont...

Last post

Why do you dismiss the rattlesnake valve poland?

Because he has no concept of simplicty and loves to contradict me ;)

It's just not that easy to...

9 Replies

2292 Views

Last post by jackssmirkingrevenge
Tue Oct 19, 2010 7:21 am
Compressing propane...

Last post by saefroch
Replies: 11
by saefroch » Sun Oct 17, 2010 9:53 pm

First post

Has anyone ever fed propane out of a tank into a pump or compressor? I'm thinking of building an attachment to feed propane into the pump I'm working...

Last post

with propane being heavier than air you would have a combustible mix floating at your feet after each shot.
I'd actually forgotten about that,...

11 Replies

6359 Views

Last post by saefroch
Tue Oct 19, 2010 6:50 am
extra ghetto old ball valve gun.

Last post by jrrdw
Replies: 1
by urgle the danish cow » Mon Oct 18, 2010 5:20 pm

First post

ok i know this is the 2nd ball valve gun ive posted in a row but i just found the video from about a year ago of my first pneumatic gun. it has i...

Last post

Yaaaaaa! Inside plinker. Not ghetto though, Klenex box combustion was a ghetto award winner.

1 Replies

1322 Views

Last post by jrrdw
Mon Oct 18, 2010 8:08 pm
20mm Pneumatic Cannon

Last post by HunterT
Replies: 7
by HunterT » Sat Oct 16, 2010 7:00 pm

First post

Finished my cannon. It's been a long time coming, but that's due to the lack of parts around here. I'm planning to modify my sprinkler valve when I...

Last post

You should prolly be using PVC cement on the PVC parts and the the ABS/PVC cement should be used when you are solvent welding ABS to PVC but I really...

7 Replies

8229 Views

Last post by HunterT
Mon Oct 18, 2010 6:45 pm
No more piston slap!!... maybe...

Last post by c11man
Replies: 28
by ThornsofTime » Fri Oct 15, 2010 4:49 am
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Ok... so I work nights at a hotel and have nothing better to do than sit around and design.

This gun,

inspired me to want to make a launcher with...

Last post

yes, unthreaded pipe is used with compression fittings. a unmodified fittting has a stop built in to prevent the pipe from going on the way though,...
28 Replies

14009 Views

Last post by c11man
Mon Oct 18, 2010 4:21 pm
How Hot Have You Run This

Last post by ThornsofTime
Replies: 13
by ThornsofTime » Sun Oct 17, 2010 3:35 pm

First post

Ok, so for the build im planing im really wanting to be able to run 500psi (500psi stated for safety reasons... normal operation to be ~350-400)....

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hehe read ma mind Lozz08, currently have another thread going that I just updated with a new valve design largely based on Technicians... except mine...

13 Replies

4025 Views

Last post by ThornsofTime
Mon Oct 18, 2010 8:40 am
A valveless pneumatic?

Last post by jackssmirkingrevenge
Replies: 15
by High-PSI » Fri Oct 15, 2010 5:30 am
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Hey Guys,

I was thinking........ In my 2 gun discussion, we got into CV values and the benefits of fast acting valves versus high flow valves and I...

Last post

I'll have to test the detent and the loading mech for the POLSKA_HYBRYDA :wink:

Ah, so it *is* happening :D build log/design concept, perhaps?
15 Replies

16410 Views

Last post by jackssmirkingrevenge
Mon Oct 18, 2010 4:50 am
reincarnation of muli-shot ball valve rifle

Last post by urgle the danish cow
Replies: 13
by urgle the danish cow » Thu Oct 14, 2010 6:04 pm

First post

so about a year ago i had a great multi-shot, spring powered ball valve airgun but it broke. what happened is that the barrel i used was made of DWV...

Last post

jhalek90 thats insane. what cannon is that? id like to see it

13 Replies

4593 Views

Last post by urgle the danish cow
Sun Oct 17, 2010 1:22 pm
Return of the LogSplitter Cannon NEW VID 10/16/2010

Last post by Gippeto
Replies: 16
by Daltonultra » Sat Sep 18, 2010 5:03 pm
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The first incarnation of this cannon:

The rebuild and reintroduction as the LogSplitter:

I haven't had the cannon out for a long time, but I...

Last post

BACK WHERE YA CAME FROM F***. :thefinger: ..(Shouldn't use 4 letter words starting with F on a public forum. :wink: :lol:

:thumbup: :thumbup:
16 Replies

7034 Views

Last post by Gippeto
Sat Oct 16, 2010 11:44 pm
Science fair project

Last post by spudmanb3
Replies: 3
by spudmanb3 » Fri Oct 15, 2010 1:01 pm

First post

I am in seventh grade and have had plenty of experiences with pneumatics. Recently I have been assigned a science fair project and for my topic i'm...

Last post

I was planning on launching in the gym anyway, bu the paintball idea would make it possible for higher pressure outdoor tests. I will use the...

3 Replies

5546 Views

Last post by spudmanb3
Sat Oct 16, 2010 10:43 am
1/2 inch piston help

Last post by Benjg555
Replies: 16
by Benjg555 » Fri Oct 15, 2010 3:03 pm
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Hey you guys currently I have a regular plain are cannon with changeable barrels and pressure gauge. What I would like to do is get a .5 inch barrel...

Last post

Haha yes it does :P
It's fine man

Ya I'll go take a peek at it
16 Replies

16956 Views

Last post by Benjg555
Sat Oct 16, 2010 10:19 am
Is this a good Coax design?

Last post by linuxexorcist
Replies: 4
by linuxexorcist » Fri Oct 15, 2010 9:31 pm

First post

I've been reading on the site for a while, and while I've built some basic cannons, nothing special has been wrought by these hands, I have built a...

Last post

i can always use threaded fittings, but I'll look into copper or brass rod first
By the way, the scope I'm using is 3-9x40

4 Replies

1761 Views

Last post by linuxexorcist
Fri Oct 15, 2010 10:35 pm
Pneumatic Beer-Launching Fridge (w/pics, videos)

Last post by skyjive
Replies: 9
by skyjive » Sun Oct 10, 2010 3:16 pm

First post

So over the summer I built a beer-launching fridge in about 2.5 weeks. I was inspired by seeing this video:

But having a bit of a background in...

Last post

Never fear, wall voltage is converted to 24VDC for use in the control circuits.

And that mortar idea sounds pretty cool, you'd just need to make...

9 Replies

8281 Views

Last post by skyjive
Fri Oct 15, 2010 11:13 am
Need help with tshirt cannon

Last post by Technician1002
Replies: 12
by jcgill » Wed Oct 13, 2010 9:28 pm

First post

I plan on building a t-shirt cannon with a 3 barrel and would like to achieve distances of around 150 yards if thats possible. I plan on making it...

Last post

I have not reached 150 yards with a t shirt using a 3 gallon tank and a 2 inch valve.

There is a great tool called Gas Gun Design Tool. You can...

12 Replies

5367 Views

Last post by Technician1002
Thu Oct 14, 2010 12:09 am
How much Pressure could this handle?

Last post by Lockednloaded
Replies: 9
by Lockednloaded » Tue Oct 12, 2010 6:32 pm

First post

I need an air ram that can handle very high pressures, but hydraulic ones and HP ones are way out of my budget. I am looking at 6498K141 on McMaster...

Last post

Well in my particular case, the air cylinder would be the bulk of the chamber, so not much air is being wasted on loading.

Also, this cylinder could...

9 Replies

2707 Views

Last post by Lockednloaded
Wed Oct 13, 2010 9:32 am

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