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

1125275 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

552411 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

821315 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

967208 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

374971 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

92431 Views

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

Topics

Mr.Porter:2 inch porting /500 psi! new vid page 6!

Last post by jackssmirkingrevenge
Replies: 90
by Brian the brain » Wed Feb 04, 2009 4:35 pm
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Well..I just tested the basic setup and at 50 psi it gave off quite a bang.
So, eventhough it´s not finished, I felt I had to share this ugly bugger...

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holy excrement! noise abatement means nothing to you :D
90 Replies

31168 Views

Last post by jackssmirkingrevenge
Thu Jan 14, 2010 12:43 am
Copperhead Pocket Launcher

Last post by twizi
Replies: 72
by Hotwired » Mon Sep 21, 2009 11:31 am
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Several designs of mine were morphed into one for the Innovations contest but it wasn't completed in time and it didn't enter.

Thought you'd like to...

Last post

sorry to bring up an old topic but damage pics????

or any updates
72 Replies

46083 Views

Last post by twizi
Wed Jan 13, 2010 8:19 pm
.FML Fifty Muzzle Loader

Last post by McCoytheLesser
Replies: 25
by elitesniper » Tue Dec 29, 2009 7:52 pm
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My most expensive project is done..cutinng the chit chat
a BEAST is what this is..
chamber uses about 3.1 feet of 1'' copper pipe
barrel is about 3...

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Nice choice of ammunition. Have you thought about Hornady's Great Plains bullets :D ?
25 Replies

16862 Views

Last post by McCoytheLesser
Mon Jan 11, 2010 9:37 pm
leaking sprinkler valve

Last post by Hubb
Replies: 2
by tonnor » Sat Jan 09, 2010 5:43 pm

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I finally finished my tennis ball cannon.As i was pumping it up air kept leaking out the barrel .I checked the site to find the problem and finally...

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Check out The Sprinkler Valve . Lots of good info.

To answer your question without answering your question, the only hole you need on the top of...

2 Replies

2023 Views

Last post by Hubb
Mon Jan 11, 2010 8:40 am
Another Sprinkler gun.

Last post by rhyce
Replies: 12
by rhyce » Mon Jan 11, 2010 12:00 am

First post

Hi all,
Ive been lurking Spudfiles for a long time. I had a previous account but i had lost my password, so finally ive decided to post one of my...

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yeah okay. I guess i probably shouldn't of tried it in my room it probably wouldn't work from a meter away.

12 Replies

3672 Views

Last post by rhyce
Mon Jan 11, 2010 1:24 am
semi auto idea help

Last post by jackssmirkingrevenge
Replies: 9
by Major Collins » Sun Jan 10, 2010 10:10 am

First post

ok for my semi auto piston valved design i came up with this...

(ok a few things ... first i think i need the regulator and ball valve to swap...

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i was using it for air rifle pellets no more big bore lol im downsizing from marbles ummm i was thinking of using 400 psi in the primary chamber an...

9 Replies

3109 Views

Last post by jackssmirkingrevenge
Sun Jan 10, 2010 11:16 pm
qev question

Last post by Marffy
Replies: 10
by grock » Tue Jan 05, 2010 6:46 pm

First post

i know that QEVs are commercial optimized piston valves, but my question is how much flow do they have? will a 3/4 QEV provide enough flow to fully...

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i cant really answer your question but if i were to guess i'd say that a 3/4 QEV could use the full volume of a 3/4 inch barrel

offtopicish:it seems...

10 Replies

4199 Views

Last post by Marffy
Sun Jan 10, 2010 11:00 pm
paintball mortar

Last post by biged
Replies: 10
by Demon » Tue Jan 05, 2010 4:31 pm

First post

Hello again,

I was wondering, as i am having a woodsball game of paintball with my friends in a few months, if mortar could be making a good weapon...

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Water balloons in dixie cups. Most of the time tennis balls (6+ to bombard a target) and bee-hives (pea stone - launched by the pound) for airsoft...

10 Replies

5095 Views

Last post by biged
Sun Jan 10, 2010 4:20 pm
Semi Auto

Last post by jackssmirkingrevenge
Replies: 42
by Lockednloaded » Tue Jan 05, 2010 5:28 pm
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I have seen the slide valve+QEV combo work great on many semi auto cannons, and now i want to make one for myself. I wish to use a 3/4 QEV, but I am...

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Co2 is commonly stored at around 850 psi.Burst pressure should be around 3000 psi...so I think it will hold 200.

Our CO 2 fire extinguishers at...
42 Replies

11542 Views

Last post by jackssmirkingrevenge
Sun Jan 10, 2010 4:03 am
M4 SOPMOD airgun/replica

Last post by FighterAce
Replies: 42
by FighterAce » Thu Jan 07, 2010 7:29 pm
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This is my recently finished M4...

With mounted telescopic bipod and suppressor... in the background you can see my zefal rush pump...

It...

Last post

What are you using as a pilot valve? Also, how much space is there behind the piston?

Effectively the piston only needs to move 25% of the barrel...
42 Replies

15435 Views

Last post by FighterAce
Sat Jan 09, 2010 5:40 pm
Compact Pistol

Last post by maverik94
Replies: 24
by maverik94 » Sat Dec 19, 2009 6:12 pm
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Over Christmas break, I plan on starting a new project, so here it is. I want to build a compact, full metal handgun. Specs are:
4.5mm (.177...

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Hmm, you don't ask for much do you?
Hah, no, I just know exactly what I want :)
24 Replies

9857 Views

Last post by maverik94
Sat Jan 09, 2010 1:31 pm
my 1st post and piston valve attempt

Last post by Brian the brain
Replies: 3
by sp1ke » Fri Jan 08, 2010 6:22 pm

First post

Hi everyone,

I have been reading and experimenting for the past 2 weeks about making a barrel sealing piston valve inside of a tee. Unfortunately...

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Ehm..It never occured to me people would try and make a piston without the rubber.... :roll:

In that case, remember to GLUE the pvc fittings,wrap...

3 Replies

1261 Views

Last post by Brian the brain
Sat Jan 09, 2010 10:43 am
paintball artillery rounds

Last post by Hubb
Replies: 22
by Demon » Wed Jan 06, 2010 6:35 pm
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I have made all the plans needed to make a 2 inch paintball mortar that would fire over 100 meters at 6 RPM ...
But now the question is what ammo...

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Does it starts to smell propane of there is no wind? That is one of the biggest complaints I have with it. Also, because it uses propane, everyone...
22 Replies

10552 Views

Last post by Hubb
Fri Jan 08, 2010 4:32 pm
Help with high pressure all metal cannon

Last post by pizlo
Replies: 1
by spudkpi » Fri Jan 08, 2010 8:16 am

First post

It has been a while since I last posted on here and it feels great to be back. Anyways I need help concerning the new all metal cannon I want to...

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Solder>epoxy when done right.
Read up on all of JSR's projects as most of them involve the kind of bolt/valve you want.

1 Replies

1770 Views

Last post by pizlo
Fri Jan 08, 2010 3:46 pm
Noob dual-valve question

Last post by psycix
Replies: 3
by torquey » Thu Jan 07, 2010 9:12 pm

First post

I did look and search - I promise!

OK, I think dual QEV's is a fairly accepted model, and most designs I see have included some way of equalizing...

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I would go for design one or two.

In any way, the most important thing of all is that the T the 3/4 QEV's connect to is larger than 3/4
If you...

3 Replies

1386 Views

Last post by psycix
Fri Jan 08, 2010 2:04 pm
10+ Gallon (Now With Damage Videos!)

Last post by Biggie
Replies: 61
by mobile chernobyl » Sat Jun 20, 2009 10:52 am
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Well this little giant is at least 2 years in the making. Here is the original thread to prove it - . College can mess with your hobby schedule but...

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This thread is kinda old but I wanted to know if I could get the solid works assembly of the valve. I take a production engineering class at a Tech...
61 Replies

36085 Views

Last post by Biggie
Fri Jan 08, 2010 2:01 pm
RX-396 Marble/Pellet Sniper Rifle NOT COMPLETE!!!!

Last post by Cosmic Muffin
Replies: 10
by bikingpro911 » Tue Jan 05, 2010 5:59 pm

First post

This is my rifle i have worked for about three months on and off on. i finally got the urge one day an just went at it an finished it lol.

Its not...

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i think ill pay this guy some credit, dont worry mate, its a nice gun :wink:

10 Replies

5059 Views

Last post by Cosmic Muffin
Wed Jan 06, 2010 12:26 am
Air supply Q.

Last post by POLAND_SPUD
Replies: 15
by RCwiley » Mon Jan 04, 2010 4:36 pm
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I am some what new to pneumatic cannons. I am going to build an Inline Vortex bbmg for airsoft but the only thing is im not totally sure on how to...

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yeah why not ?
it's not that you can't get high pressures with propane
the warmer it is the higher pressure you get... you can use google to graphs...
15 Replies

4221 Views

Last post by POLAND_SPUD
Tue Jan 05, 2010 10:44 pm
Question: Stocks with thumb holes.

Last post by chinnerz
Replies: 20
by chinnerz » Sat Jan 02, 2010 2:20 am
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Im making a small barrel air rifle. I am kind of new to all of this, but i seem to have made the working parts with no issue what so ever. But i have...

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Looking good, but where's the launcher that goes with it?

i have almost finished that, so look out for it.
20 Replies

5700 Views

Last post by chinnerz
Tue Jan 05, 2010 9:12 pm
Sneak peak of my new build. Pic of 4'' piston and 2.5"

Last post by jackssmirkingrevenge
Replies: 24
by jhalek90 » Wed Dec 30, 2009 4:18 pm
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Just wanted to tease you all a little bit with some pics of my new cannon/ammo

Pic of the piston. Fits perfect in sch 40 4'' pvc.

Pics of the...

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Well they were, but then we started loaning them to banks and then the banks couldn't pay us back when we called in all our loans when JSR got drunk...
24 Replies

5783 Views

Last post by jackssmirkingrevenge
Tue Jan 05, 2010 2:01 am
pneumatic water gun

Last post by spudkid10
Replies: 4
by spudkid10 » Sun Jan 03, 2010 6:13 pm

First post

This was inspired by something I saw on a website called . It's a pneumatic water gun. I kind of made the design different, and am going to pick up...

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i'm planning to put a nozzle on it. i'm also going to put actual hose threads on it, because it's leaking.

4 Replies

4328 Views

Last post by spudkid10
Sun Jan 03, 2010 8:38 pm
Judge Dredd

Last post by tonnor
Replies: 28
by geardog32 » Sun Jul 12, 2009 9:23 pm
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this is my first air cannon everything is sched 40 pressure rated stuff. i need some suggestions for a color scheme maybe a pattern. i will post...

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Me again back from lowes and the local hardware store.They do not sell 4 inch pressure rated pvc only foam core which i believe wont work.Is this...
28 Replies

8294 Views

Last post by tonnor
Sun Jan 03, 2010 7:39 pm
Copper gun to fire 1 1/2" steel flechettes.

Last post by ramses
Replies: 12
by kiwi of nitro » Sat Jan 02, 2010 11:58 pm

First post

I just bought a 3/4 QEV from McMaster,

Should I use the QEV to fire the cannon or pilot a piston?

I want to fire these little flechettes, I just...

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Their BC should be quite high, maybe above 1. that puts the Cd very low.

12 Replies

7506 Views

Last post by ramses
Sun Jan 03, 2010 1:59 pm
I'll have a medium mcHelp meal

Last post by ramses
Replies: 8
by IA_Armourer » Fri Jan 01, 2010 10:20 pm

First post

I know that there will be people here who will call me an absolute tit and tell me to look at the how-to section but so far I have and I hasn't...

Last post

linkey

8 Replies

2786 Views

Last post by ramses
Sat Jan 02, 2010 1:25 pm
My Chamber blew off. I need help

Last post by grock
Replies: 14
by spudkid10 » Fri Jan 01, 2010 11:30 pm

First post

Hi,
I've built a few pneumatic guns in the past, but on my most recent one two really bad things happened.
1. I use a bike pump with a schraeder...

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hey, also keep in mind if you are gluing large diameter pipe, some hardware stores only sell glue for up to 2 diameter pipe, i didn't realize that on...

14 Replies

3628 Views

Last post by grock
Sat Jan 02, 2010 1:17 pm

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