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

1124917 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

552098 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

821106 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

966931 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

374841 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

92381 Views

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

Topics

Anyone think these can take 800 psi/

Last post by jhalek90
Replies: 4
by JDP12 » Tue Dec 20, 2011 7:18 pm

First post

This is what im usin for the bolt for my new gun, and I'd really like to have the air source for it be the chamber of the gun like POLAND_SPUD did,...

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800 psi will make the air cylinder punch through any soft ammo.
Hard ammo would probably bend the cylinder rod.

That is of course.... if the air...

4 Replies

1925 Views

Last post by jhalek90
Sun Dec 25, 2011 2:40 pm
33/64" fitting question

Last post by JDP12
Replies: 6
by squnto » Sat Dec 24, 2011 10:54 pm

First post

will this slide valve:

fit into a standing 1/2 fitting? The difference is so small that it just might work...

thanks in advance!

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yes... however the threads on that slide valve are BSPP, so they are parallel threads, whereas NPT are tapered. personally I'd recommend just getting...

6 Replies

1824 Views

Last post by JDP12
Sun Dec 25, 2011 1:39 am
A few questions about threads

Last post by sharpshooter11000
Replies: 1
by sharpshooter11000 » Sat Dec 24, 2011 4:16 am

First post

Sorry if it's a silly question but should this fit into the R port of this QEV? I was wondering because the reducer says it has a pitch and the QEV...

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Actually it doesn't matter, I've decided to use a different QEV anyway.

1 Replies

736 Views

Last post by sharpshooter11000
Sat Dec 24, 2011 4:36 am
quick connect fittings

Last post by Major Collins
Replies: 7
by Major Collins » Wed Dec 21, 2011 12:40 am

First post

are quick connect fittings solderable and what pressure rating are they?
i dont know if it matters but i want 1/4 npt

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im not too sure i know what part your saying for me to soldier on my launcher ...

on another note you can assemble and reassemble female quick...

7 Replies

2302 Views

Last post by Major Collins
Thu Dec 22, 2011 8:20 pm
Hey spudfiles!

Last post by cammyd32
Replies: 6
by Dairyfarmer » Thu Dec 22, 2011 12:16 am

First post

So I've been lurking these forums since about 2006 and I always wanted to build my own cannon. Eventually in 2008 I just sortof did it one day, after...

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Dang! that is a big cannon! nice job with that :)
only improvements I can suggest apart from the ones aforementioned is to possibly make a custom...

6 Replies

4360 Views

Last post by cammyd32
Thu Dec 22, 2011 12:51 pm
bolt actions

Last post by jackssmirkingrevenge
Replies: 5
by Major Collins » Tue Dec 20, 2011 7:25 am

First post

how do bolt actions on airguns work?
when you use the bolt to push the ammo forward (assuming the bolt is solid) no air can get behind the...

Last post

On another note, looking at the Crosman 1337 diagram - damn that's poor design in terms of efficiency!

5 Replies

1637 Views

Last post by jackssmirkingrevenge
Tue Dec 20, 2011 3:26 pm
Building industrial automated golf ball tester - Ideas?

Last post by POLAND_SPUD
Replies: 15
by morphious » Fri Dec 16, 2011 7:56 pm
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HI Guys, Love the board!

I am in the process of building a new golf ball for a game I am creating and I need to test the golf balls I am receiving...

Last post

Then simply attach a timer. One shot every X+5 seconds. Nice part about that is a clock will tell you how many shots you've fired. No fancy shot...
15 Replies

7808 Views

Last post by POLAND_SPUD
Mon Dec 19, 2011 1:04 pm
two different cannon ideas..

Last post by shardbearer
Replies: 16
by evanmcorleytv » Sun Dec 11, 2011 12:46 pm
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Hey everyone, this is more of a vote thread that anything else.. I have a mauler that needs to be used, and I am at a point where I don't know what...

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Semi auto golf ball.
16 Replies

5149 Views

Last post by shardbearer
Mon Dec 19, 2011 11:18 am
gap spaces between pipes

Last post by shardbearer
Replies: 3
by Major Collins » Mon Dec 12, 2011 1:11 am

First post

what is a good gap filling substance which that is strong and cheap , i would go with epoxy but then that isnt too cheap ... (just cos i need to fill...

Last post

Is that how epoxy putty is made?

And I would say fiberglass resin and newspapers.

3 Replies

1738 Views

Last post by shardbearer
Mon Dec 19, 2011 10:59 am
need new bumber ideas for my cannon

Last post by jsefcik
Replies: 26
by jsefcik » Sun Dec 11, 2011 6:07 pm
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i have an o-ring piston,with bolt and washer,
looking for new bumper ideas, tennis ball sucks doesnt last long enough

please help

Last post

You never know maybe she got a old one you could use???

only you !!! lol
26 Replies

6707 Views

Last post by jsefcik
Sun Dec 18, 2011 2:04 pm
QEV Help (firing out pilot)

Last post by svdesigns
Replies: 2
by svdesigns » Sun Dec 18, 2011 12:45 pm

First post

Hey People been researching a lot in the past few months and need a bit of help. So heres my problem, my qev isnt working, its firing out the pilot...

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ok so i guess its the sealing surface. its almost the exact same size as the piston, nothing for the pressure to push on? i guess i need a bigger T...

2 Replies

2278 Views

Last post by svdesigns
Sun Dec 18, 2011 1:31 pm
Coaxial Hammer Valve Idea

Last post by Brian the brain
Replies: 10
by DerpWithAGun » Sat Dec 17, 2011 8:38 am

First post

Hey guys,

I been thinking lately, the cartridge design which I want to use for my next airgun is kind of going to be a pain in the backside so I...

Last post

Here she is:

Entire buildlog found here:

long read though.

10 Replies

3670 Views

Last post by Brian the brain
Sun Dec 18, 2011 8:53 am
1/2 qev rifle with stock!

Last post by urgle the danish cow
Replies: 20
by urgle the danish cow » Sun Sep 18, 2011 12:55 pm
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this gun was built for accuracy before power but i am very satisfied with it so far. one major mistake i made was that i built the stock before the...

Last post

hey bro can you do a virtual sketch of the stock to make it? is that i have tried to make mine but is lame...
Hope you response

idk about a...
20 Replies

18857 Views

Last post by urgle the danish cow
Fri Dec 16, 2011 6:27 pm
Help me Build my piston

Last post by jrrdw
Replies: 10
by Marffy » Thu Dec 15, 2011 8:41 pm

First post

I need help making my piston. I'm wondering What to use for everything. My shop class has a lathe so i'm thinking I can make the piston out of...

Last post

I need help making my piston

This is the 3rd time you've gone down this road and you STILL don't get it??? :roll: :roll: Maybe it's something you...

10 Replies

3697 Views

Last post by jrrdw
Fri Dec 16, 2011 3:05 pm
new air gun

Last post by jrrdw
Replies: 1
by K8TOW » Mon Dec 12, 2011 12:14 pm

First post

this is my first attempt at building my own design .it has a few different barrels.1 to shoot tennis balls,1 to shoot 1 1/4 pvc caps,AA batterys,and...

Last post

Welcome back. Got any pics? Video's???

1 Replies

2092 Views

Last post by jrrdw
Mon Dec 12, 2011 12:19 pm
Ramjet BBMG

Last post by Demon
Replies: 31
by Demon » Sun Dec 11, 2011 12:34 pm
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I want to install a BBMG on my FPV (Tracers 6mm airsoft for maximal cool effect).

But carrying an airtank might be too much for the already heavily...

Last post

Yes, but I am nowhere near possession of a cloud-sized fog making machine.

Scrap everything I previously said. The best design for my purposes would...
31 Replies

10471 Views

Last post by Demon
Sun Dec 11, 2011 7:52 pm
How to build pneumatic with trigger valve thingy??!

Last post by jrrdw
Replies: 13
by bellabob » Thu Dec 08, 2011 10:44 pm

First post

Link is above. How do I do this? Is there any way I can modify the cannon I have now to be like this.

Thanks.

Last post

Ok then. Sorry about all that.

Don't go getten sweet on us! Post your cannon and join the disscusion.

Welcome to Spudfiles. :D

13 Replies

5197 Views

Last post by jrrdw
Sat Dec 10, 2011 1:12 pm
This is going to seem kind of ironic...help with o-ring size

Last post by JDP12
Replies: 14
by JDP12 » Fri Dec 09, 2011 4:49 pm

First post

So despite having written an o-ring calculator... that is for stretched o-rings, and not floating o-rings, as far as I know itd be hard to determine...

Last post

Yea.... i wish mcmaster sold o-rings in packs of less than 100.... sucks.

I think I'll try my local hardware store first before trying to order some...

14 Replies

3624 Views

Last post by JDP12
Fri Dec 09, 2011 7:43 pm
hammer valve design

Last post by JDP12
Replies: 8
by JDP12 » Thu Dec 08, 2011 6:22 pm

First post

Slightly new twist on the hammer valve design proposed by BTB... It's explained within the diagram, and as far as i can tell it should work fine, the...

Last post

look at BTBs original counterbalanced hammervalve.. it has to be smaller in order to allow air to get into the valve. you could do it other ways, but...

8 Replies

4609 Views

Last post by JDP12
Thu Dec 08, 2011 9:57 pm
Pilot volume and remote mounting of pilot valve

Last post by High-PSI
Replies: 6
by High-PSI » Wed Dec 07, 2011 9:48 pm

First post

Hey Guys,

I am setting up the final configuration for my 1/2 inch barrel, 600 psi cannon and I have a question for you;

The main valve is a brass...

Last post

The pilot tube is a 1/2 inch pipe into the pilot valve. So, any added length will really add to the pilot volume.

I spoke with the valve...

6 Replies

5795 Views

Last post by High-PSI
Thu Dec 08, 2011 9:51 pm
dwv pressures

Last post by MrCrowley
Replies: 15
by sprayandprayboy » Sun Dec 04, 2011 10:42 am
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nuthing fancy ive just built my first pneumatic gun... chamber - 8 X 3 dwv
barrel-1/2 X 18 my question is what will a safe working pressure be

thanks

Last post

they say nsf
They should also say PW meaning potable water. If they only say NSF-DWV then don't use them.

@prayandprayboy
As long as they have...
15 Replies

6297 Views

Last post by MrCrowley
Wed Dec 07, 2011 3:57 am
semi auto paintball blow forward bolt

Last post by lklaussen
Replies: 5
by lklaussen » Mon Dec 05, 2011 10:30 pm

First post

So I got my blow forward bolt done.. tell me what you think!

Last post

haha yupp. looks like another few hours of work for when I get home from school :?

5 Replies

3721 Views

Last post by lklaussen
Tue Dec 06, 2011 1:55 pm
Do-it-yourself hydro testing?

Last post by al-xg
Replies: 30
by High-PSI » Mon Nov 14, 2011 4:30 pm
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Hey Guys,

I am moving to higher pressure on my cannons (from 200 to 400psi) and I have a question;

I have a small Cannondale shock pump on order (I...

Last post

Paintball regulators can be found for reasonable prices, CO2 regulators on Ebay... I've seen some capable of 0-2000psi outlet go for $20.
30 Replies

9903 Views

Last post by al-xg
Sat Dec 03, 2011 6:30 pm
Two Orbits valves on one air chamber: fratricide?

Last post by jackssmirkingrevenge
Replies: 29
by WingerCT » Wed Sep 28, 2011 10:17 pm
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Hi all-

New poster here, and I really believe I have tried to answer this question via the search function, so please be gentle with me.

I learned...

Last post

Are you using a momentary switch on the valves?

GGDT assumes you dumped the whole chamber.

As Lockednloaded pointed out a shorter barrel might...
29 Replies

9737 Views

Last post by jackssmirkingrevenge
Sat Dec 03, 2011 12:28 am
airgun shotgun shells

Last post by rexw7
Replies: 2
by rexw7 » Fri Dec 02, 2011 10:13 am

First post

he guys i'm currently making a new air gun and i have a question for you guys
how do you make airgun shotgun shells like there are in the gamo viper...

Last post

sweet thanks for the help i'll have a look

2 Replies

2711 Views

Last post by rexw7
Fri Dec 02, 2011 10:18 am

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