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

1124993 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

552150 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

821133 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

966989 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

374856 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

92393 Views

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

Topics

50lb Freon recovery unit tank help.

Last post by warhead052
Replies: 26
by warhead052 » Tue Apr 19, 2011 8:30 pm
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I got a 50lb freon recover unit, and I was wondering what I needed to do to make it hold air. I will post a picture as soon as possible.

Edit, I...

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Ok. By the way, I took my rifle to Southern Firearms (my local gunstore) and they loved it, and we hooked it up to their compressor at 130psi (my pop...
26 Replies

4753 Views

Last post by warhead052
Sat Apr 23, 2011 5:40 pm
Full/Semi auto 27mm blowback bolt cannon. UPDATED new paint+

Last post by jhalek90
Replies: 30
by jhalek90 » Wed Apr 20, 2011 7:28 pm
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Cannon Specs:

27mm
semi/full auto (select fire, kinda.)
Blow back breech
7 round detachable spring loaded magazine
Main Valve: 1'' sprinkler valve,...

Last post

I am re making to bolt to reduce deadspace and tighten up some seals. Will upload picture of the new bolt soon.

Right now the bolt is simply a 1/2...
30 Replies

18360 Views

Last post by jhalek90
Thu Apr 21, 2011 10:09 pm
SIGG/Laken water bottles - EDIT - Nevermind, sorry.

Last post by Yamroll

by Yamroll » Thu Apr 21, 2011 3:08 am

Forgive me if this has been covered, I searched and didn't see any info on this one.

Anyone have ideas as to the pressure tolerance of SIGG or Laken...

0 Replies

4469 Views

Last post by Yamroll
Thu Apr 21, 2011 3:08 am
Stirrup pump help. UPDATE PICTURES

Last post by LovableAirGuns
Replies: 8
by LovableAirGuns » Tue Apr 19, 2011 8:36 am

First post

Hey every one i have been recently been making a stirrup pump and i have been using Gippeto's easy stirrup pump instructions but for some reason the...

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@ Gippeto: I dont think ill make the check valve but ill buy one in stead to be on the safe side and to just make life easier, Also the pumps head is...

8 Replies

3286 Views

Last post by LovableAirGuns
Wed Apr 20, 2011 10:14 pm
piston fit/ OD tolerence

Last post by Technician1002
Replies: 7
by turner » Wed Apr 20, 2011 5:34 pm

First post

do you think a delrin piston that is .75 would be a good enough fit for drawn aluminum tube at .759? this if for a coax rifle and i would like to use...

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Use the drill press vise to both drill the plastic for the arbor and then again to align and screw in the arbor. After drilling, leave the plastic on...

7 Replies

2768 Views

Last post by Technician1002
Wed Apr 20, 2011 6:54 pm
first gun, help!

Last post by Link=UN=
Replies: 35
by Link=UN= » Fri Apr 08, 2011 12:53 pm
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Hi
i found this site a few weeks ago and its been great inspiration for my 1st rifle -

my final outcome will hopefully be something like this -...

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haha ahhh shiiiit, i was hoping there was a really simple answer that i had overlooked

i stuck a tap washer over the end, instead of the bushing...
35 Replies

8684 Views

Last post by Link=UN=
Wed Apr 20, 2011 3:24 am
new coax+homemade bullets

Last post by jackssmirkingrevenge
Replies: 4
by urgle the danish cow » Mon Apr 18, 2011 6:09 pm

First post

this is a regular coax piston valve. it is .25 caliber and piloted by a 1/2 ball valve and filled via an ex-propane tank filled with air. my pump is...

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If you could get that lovely breech machined, why are you casting your slugs in a block of wood? Even a section of barrel material seems like a...

4 Replies

3879 Views

Last post by jackssmirkingrevenge
Wed Apr 20, 2011 12:20 am
Latest finned impact rounds

Last post by inonickname
Replies: 4
by Solar » Sat Apr 09, 2011 6:11 am

First post

These can reside in the same magazine as the timed aerosol rounds. They have a new nosecone with some very special features. I will have to wait and...

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Sorry if I havent seen an earlier post where you might have described it. What are the Tail sections and Nose sections made from ? did you fabricate...

4 Replies

1694 Views

Last post by inonickname
Tue Apr 19, 2011 11:51 pm
Lordy lordy, Schedule 40

Last post by Yamroll
Replies: 17
by Yamroll » Sun Apr 17, 2011 10:20 pm
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So, this is my first spud gun. Mentioned it briefly in the pneumatic discussion forum, the paint is more or less done though, so, here it is.

Still...

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Yeah, kind of my thinking there. The sprinkler valve is really only rated to 125 psi anyway. I know people have taken them up to 200 or so, but, I'd...
17 Replies

7954 Views

Last post by Yamroll
Tue Apr 19, 2011 10:22 pm
Air tank sealing problem.

Last post by warhead052
Replies: 30
by warhead052 » Thu Mar 31, 2011 11:28 am
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What should I use to reseal my pvc air tank? I have 15 more joints to seal, and I ran out of epoxy. Anything that would be a common house hold item...

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I dont even have a welder or torch >.> But I will check it out tonight when my dad brings it home... I will clear it out with water and get rid of...
30 Replies

6875 Views

Last post by warhead052
Tue Apr 19, 2011 2:43 pm
School Engineering Project Help

Last post by Technician1002
Replies: 1
by nate4osu » Tue Apr 19, 2011 12:56 pm

First post

I am working on a school project for one of my engineering classes. I have a few questions about air cannons and fluid mechanics.

In your best...

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#1 is vague. Projectiles, Valve, Construction Materials?

#2 Most could use higher CV for higher flow.

#3 See my sig for details on my design. High...

1 Replies

941 Views

Last post by Technician1002
Tue Apr 19, 2011 1:04 pm
ideas on portable pneumatic

Last post by jackssmirkingrevenge
Replies: 11
by shiny455 » Mon Apr 18, 2011 10:02 pm

First post

i am interested in making a portable very powerful gun to shoot ball bearings probly just small 6mm ball bearings. first i thought i would try make a...

Last post

Tally-ho pip-pip and Bernard's your uncle. ;)

11 Replies

4251 Views

Last post by jackssmirkingrevenge
Tue Apr 19, 2011 10:07 am
My first Stirrup Pump build...

Last post by LovableAirGuns
Replies: 20
by Big-E » Fri Feb 26, 2010 1:33 pm
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Hi all,

It's been a long time since I've posted anything; I've been extremely busy, but I haven't stopped spudding.

Anyways, here's my latest...

Last post

Update pictures sounds good and hopefully i can post pics of my pump today even though my pump has so much dead space that i need to get rid of :/
20 Replies

10284 Views

Last post by LovableAirGuns
Mon Apr 18, 2011 9:23 pm
Chamber Question

Last post by squidchicken
Replies: 2
by spiffypotato » Sun Apr 17, 2011 11:08 am

First post

Hey guys i'm building me an all metal, piston valve ( barrel sealing) 3/4 inch with changeable barrels but i'm just starting with a 3/4 inch barrel...

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its easier to use steel than copper if you dont have the soldering equipment, just use something like a 3/4 galvanized steel pipe with an endcap and...

2 Replies

1271 Views

Last post by squidchicken
Mon Apr 18, 2011 3:07 am
Help - Valve freezing with CO2

Last post by l_uk3y
Replies: 5
by l_uk3y » Sun Apr 17, 2011 3:33 am

First post

Hey guys.

Fairly new to all this. Either way im building my first air gun.

Im using copper pipework with a fairly basic compressed air trigger...

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Cool. Thanks guys. I would love to use HPA. Biggest problem is availability. Bottled CO2 is the simplest option for purchasing hence my desire to use...

5 Replies

2113 Views

Last post by l_uk3y
Mon Apr 18, 2011 2:51 am
Discrepancy between pump pressure gauge and Orbit gauge

Last post by Yamroll
Replies: 10
by Yamroll » Tue Apr 12, 2011 10:20 pm

First post

Howdy all,
New to the forum, new to spudding (apart from a poorly executed venture about 10 years ago). Seems like a good place to ask about a...

Last post

Pics are up

10 Replies

4758 Views

Last post by Yamroll
Sun Apr 17, 2011 10:59 pm
3 inch piston help

Last post by Gaderelguitarist
Replies: 25
by cannon monkey » Wed Apr 13, 2011 9:57 pm
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Hey guys Im in need looking to build a new toy but I don't know what to use for a piston I'm looking to fit into 3 pipe bout 2-4 inchs long any ideas...

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Make sure to also take note of the wear the piston creates on the piston housing. Labtecpower brings up an extremely good point concerning the impact...
25 Replies

15282 Views

Last post by Gaderelguitarist
Sun Apr 17, 2011 4:37 pm
Vintorez wannabe

Last post by bahur47
Replies: 8
by bahur47 » Fri Apr 15, 2011 12:19 pm

First post

Hello, this is my first gun and almost everything I need to know about the valves I learned from this site. So this is it:

- barrel sealing valve...

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@ jackssmirkingrevenge - the barrel fits almost perfectly in the outer tube so it can't be used as а silencer. I glued it with epoxy

@ kotabuuki -...

8 Replies

5241 Views

Last post by bahur47
Sat Apr 16, 2011 8:54 am
First Finished QEV gun

Last post by Doctore
Replies: 21
by jmez1996 » Mon Feb 28, 2011 6:53 pm
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This is my first gun upload to spudfiles but about my tenth prototype for ideas on a airgun. I put it together recently and decided to finish it. It...

Last post

Awesome QEV gun
I would like to see damage pics
21 Replies

11561 Views

Last post by Doctore
Sat Apr 16, 2011 4:42 am
co2 cartridge's

Last post by Labtecpower
Replies: 2
by warhead052 » Fri Apr 15, 2011 4:01 pm

First post

Would they work as small bursts of power? How would I link em into a slightly bigger tank? Heres what I might buy.

edit, will a mod please move...

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and, maybe you can put stuff like this in this topic I made instead of opening a new topic for every question.

2 Replies

1695 Views

Last post by Labtecpower
Sat Apr 16, 2011 3:02 am
8mm coaxial

Last post by ilovefire
Replies: 38
by ilovefire » Sun Mar 27, 2011 9:14 pm
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hey this is my new gun i just finished, still needs a stock and am still waiting for the epoxy to dry on the barrel so testing and vids will have to...

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thanks, yea iv used it at 400 a few times, except i tried today and the O-ring came out so ill have to ge t a fatter spool :/
38 Replies

10610 Views

Last post by ilovefire
Fri Apr 15, 2011 11:26 pm
PVC piston valve in progress!

Last post by Gun Freak
Replies: 45
by drex » Thu Mar 17, 2011 11:29 pm
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Its been a while, but I decided its a good time to get back into this hobby, so today I started machining a piston valve out of PVC and the piston...

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The only thing here I can say is wow ... it looks really great. Nice job man.
45 Replies

13114 Views

Last post by Gun Freak
Fri Apr 15, 2011 9:09 pm
Seal the thread

Last post by Zeus
Replies: 13
by Tobin » Thu Apr 14, 2011 3:16 pm

First post

Im building a +30 bar pneumatic and im thinking about how to seal th threads. I decided to use epoxy to seal the threads so its not really a problem...

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Presuming you don't have excessively long pipes held up only by the threads, PTFE tape will do just fine.

Remember, you can never use too much PTFE...

13 Replies

3873 Views

Last post by Zeus
Fri Apr 15, 2011 4:37 am
pneumatic timed aerosol grenade

Last post by Solar
Replies: 5
by Solar » Sat Apr 09, 2011 6:03 am

First post

These fit in 37 and 40mm or can be thrown by hand. They are using pepper spray in this one, but can have a nosecone attached and use the compressed...

Last post

Also, the button has a snap groove so it stays down, even with the can pressure pushing back at it. We can configure it to have cuts that allow the...

5 Replies

2033 Views

Last post by Solar
Thu Apr 14, 2011 4:42 am
Small high pressure air compressor ideas

Last post by BigBang J
Replies: 31
by BigBang J » Wed Mar 02, 2011 10:16 pm
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Hi guys, I want an air compressor that can go up to 1000psi.
I have tried a mini fridge compressor but it died on me and wont compress air anymore. I...

Last post

Does the current proposal include multiple shop compressors?

What do you mean by that?

I would like to be able to use it without a pressurized...
31 Replies

14152 Views

Last post by BigBang J
Tue Apr 12, 2011 10:15 pm

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