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

911979 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

447319 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

402696 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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First post

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

622773 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

329866 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

79186 Views

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

Topics

Epoxy vs oily barrel

Last post by Marffy
Replies: 5
by josephlys » Mon Apr 16, 2012 8:27 am

First post

Without putting too much thought into it, I epoxied a check-valve in my air-chamber without first cleaning the grease out. I did casually wipe it...

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Yeah. Just remotely fill it to at least 100 (150 or 200 to test its limits) and see if it shoots out

5 Replies

2457 Views

Last post by Marffy
Sat Apr 21, 2012 6:05 pm
Piston valve cuts sealing face

Last post by Marffy
Replies: 8
by Marffy » Thu Apr 19, 2012 11:35 pm

First post

My Gun cuts the seals up and spits them out. The piston is domed and has a screw and washer holding a 1/8 thick round piece of gasket material. It...

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Oh. That seams easy enough. I forgot how malleable copper is

8 Replies

2676 Views

Last post by Marffy
Sat Apr 21, 2012 12:55 am
pneumatic mortar?

Last post by Fnord
Replies: 5
by Alster370 » Fri Apr 20, 2012 3:15 pm

First post

My magic dust worked brilliantly when tested yesterday, I would like to build a simple mortar to launch this high into the air.

I don't want to...

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I kinda figured you'd want the thing ignited when the gun was triggered, by means of an appropriately made fuse. Please look up shell design on the...

5 Replies

3082 Views

Last post by Fnord
Fri Apr 20, 2012 4:11 pm
easy way to make counter blane valve like btb

Last post by Brian the brain
Replies: 5
by dahakka » Thu Apr 19, 2012 6:22 am

First post

can't compare with btb counter blance but easier to build , and safe,i think :D :D

i have alot of 1/2' brass fit , problem is o ring and...

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Is this more to do with the way the CBHV valve functions, or just general advice for friction/wear issues?
Never use O-rings to slide over a hole...

5 Replies

2036 Views

Last post by Brian the brain
Fri Apr 20, 2012 10:13 am
Pneumatic parts for sale.

Last post by warhead052
Replies: 1
by warhead052 » Fri Mar 09, 2012 12:56 pm

First post

First up is a lubricator, can use it for anything. Fill it with water, oil, what ever, and it will work. Items do have some wear on them, but they...

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(thanks mods for removing the previous post.)

Parts are still up for sale if anyone is interested though.

1 Replies

1085 Views

Last post by warhead052
Fri Apr 20, 2012 9:52 am
Ebay Pneumatic Valves

Last post by jackssmirkingrevenge
Replies: 7
by DerpWithAGun » Mon Aug 22, 2011 7:16 am

Hi guys,

I was on ebay and I found these two pneumatic QEV valves.

Which one would hold more pressure. I like the look of the square one....

7 Replies

3044 Views

Last post by jackssmirkingrevenge
Fri Apr 20, 2012 12:10 am
Refilable 12 Gram CO2 Cartridge

Last post by jackssmirkingrevenge
Replies: 6
by sagthegreat » Tue Apr 17, 2012 5:03 pm

Is it possible to attack(weld/epoxy) on a schrader valve onto a spent co2 cartridge and fill it with air to use with homemade guns, if so how much...

6 Replies

2927 Views

Last post by jackssmirkingrevenge
Wed Apr 18, 2012 12:02 am
high pressure or hig volume?

Last post by Moonbogg
Replies: 7
by Halo96 » Sun Apr 15, 2012 10:29 am

First post

what do you guys think is better to achive great distances a high amount of pressure or or a high amount of air volume :D

Last post

Huge pumpkin cannons launch with low pressure and huge volume with long barrel. It really depends on ammo and what the ammo can take. Given your...

7 Replies

2482 Views

Last post by Moonbogg
Tue Apr 17, 2012 12:28 am
Semi-Auto* .22 QEV + Slide Valve Rifle WIP (*Almost)

Last post by qwerty
Replies: 8
by qwerty » Mon Apr 09, 2012 7:14 am

First post

Well, as promised, i built a .22 caliber semi auto rifle using a QEV and slide valve.
It's not fully finished-I'll put a scope on it at some point...

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Also, qwerty, shouldn't your sig be a dyslexic man walks into a bra ?

I pondered on this for a while... Surely dyslexic people would be able to...

8 Replies

7812 Views

Last post by qwerty
Mon Apr 16, 2012 1:50 am
QEV Options

Last post by PVC Arsenal 17
Replies: 6
by PVC Arsenal 17 » Fri Apr 13, 2012 7:49 am

First post

I apologize in advance for such a noobish thread, but a lack of datasheets has forced me to do this...

I'm looking for a 1/4 QEV and I've narrowed...

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How was I supposed to assume they were Bosch? :P

...And soon I will unveil the third incarnation of my endless quest to build a revolving dart...

6 Replies

1696 Views

Last post by PVC Arsenal 17
Sun Apr 15, 2012 5:00 pm
Piston problems...

Last post by mattyzip77
Replies: 15
by warhead052 » Mon Apr 09, 2012 3:04 pm
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I am getting this weird suction problem with my piston. No matter what I do it won't stop getting a suction where it seals, and it vent's all the air...

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1. The piston isnt tight enough. Try wrapping a layer of tape around it, it can make all the difference in the world, just try it!!

2.Your pilot...
15 Replies

3316 Views

Last post by mattyzip77
Sat Apr 14, 2012 9:57 am
I need help with my Pen Gun

Last post by PotatoEnemy17
Replies: 7
by PotatoEnemy17 » Wed Apr 11, 2012 5:17 pm

First post

I'm starting my second pneumatic cannon and it is a pen gun type thing. My problem is the piston won't seal onto the barrel. I used wd40 but it...

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Thanks for the help. I made a hot glue piston and I have epoxyed evereything together now, I just have to wait for it to dry.

7 Replies

2068 Views

Last post by PotatoEnemy17
Fri Apr 13, 2012 5:31 pm
Using a 4500psi 45Cu.In tank?

Last post by Greg77
Replies: 6
by Greg77 » Thu Apr 12, 2012 9:52 pm

First post

Is there a way to use a 4500psi paintball tank as the air chamber for a cannon? I was browsing the site and noticed with a QEV it would work but they...

Last post

This is true. It will show up in the garage in the near future :)

6 Replies

774 Views

Last post by Greg77
Thu Apr 12, 2012 11:48 pm
how is air released from this

Last post by beastmode986
Replies: 6
by beastmode986 » Sat Apr 07, 2012 3:59 pm

First post

i cant really tell how the air is released from this valve,it seems very simple can someone please explain thanks.

Last post

oooo ok i see now yeah its really simple thanks!

6 Replies

3189 Views

Last post by beastmode986
Thu Apr 12, 2012 7:29 pm
Hammer valve endeavour

Last post by Gun Freak
Replies: 148
by Gun Freak » Wed Jan 11, 2012 8:54 pm
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Alright so I'm building a hammer valve, finally.
I've been flooding other threads about it, so I'll just make a new one.

The valve will most likely...

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Thank you! I myself was inspired by Lockednloaded who made a higher pressure version of this. It is indeed an MJV-2, I was really excited when I got...
148 Replies

51751 Views

Last post by Gun Freak
Thu Apr 12, 2012 10:02 am
The BBinator - work in progress + damage pics

Last post by alumoi
Replies: 27
by alumoi » Fri Apr 06, 2012 6:28 am
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My first ever pneumatic rifle!
Materials:
- BB rifle barrel, 6,03 mm ID encased in a 1 cm brass tube
- green gas container
- schrader valve
- piston...

Last post

@PotatoEnemy, yes, it's homemade.
@Fnord, the owner of the plate says it's painted copper.
On poor man's chronometer (aka coke bottle) I get 400-450...
27 Replies

11840 Views

Last post by alumoi
Thu Apr 12, 2012 4:48 am
Spring-loaded chambers

Last post by PVC Arsenal 17
Replies: 13
by PVC Arsenal 17 » Fri Aug 19, 2011 7:04 pm

First post

After reading this Nerf thread I've been curious about the possible advantages of spring-loaded or even latex bladder air chambers.

In short, the OP...

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Hotwired: Mind=blown. Somehow that never crossed my mind.

I think I'll rig up something like Gun Freak's Project and use a solenoid to actuate the...

13 Replies

5672 Views

Last post by PVC Arsenal 17
Wed Apr 11, 2012 9:26 pm
Piston Brass Air Gun

Last post by PotatoEnemy17
Replies: 9
by sagthegreat » Fri Mar 09, 2012 5:23 pm

First post

This is my first gun:
Mostly Brass
Rubber/Aluminum Piston
about 8 inches long
3mm barrel
pumped to 200 fps so far to test, need to buy shock pump....

Last post

it works now thanks guys, i used jsr's epoxy method and cranked this up to 550psi, it shot a nail into a stop sign from 10 feet away, im surprised...

9 Replies

3110 Views

Last post by PotatoEnemy17
Wed Apr 11, 2012 5:47 pm
My first piston valve.

Last post by PotatoEnemy17
Replies: 2
by warhead052 » Sun Apr 01, 2012 11:24 am

First post

So I am going to hopefully start making my first piston valve today. I have looked in this thread, and a few others for ideas, and I think I like the...

Last post

Im also working on my first piston valve. Mine is made in a 1 inch tee with a 3/4 inch barrel. I haven't tested it out though.

2 Replies

1203 Views

Last post by PotatoEnemy17
Wed Apr 11, 2012 5:32 pm
semi blowgun!!!

Last post by Hotwired
Replies: 23
by iknowmy3tables » Wed Mar 21, 2007 8:15 pm
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Well I know I'm not the only person who is working on or considering making a semi auto or auto refilling gun so this should be helpful to a lot of...

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i guess using such type of stuff is much better with less effort, what do you think?

I think you're a bot.
23 Replies

17574 Views

Last post by Hotwired
Wed Apr 11, 2012 8:31 am
No Spare Parts; BV launcher

Last post by kydavies
Replies: 20
by kydavies » Mon Apr 09, 2012 4:55 pm
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This is my throw back BV launcher, i have had the desire to put holes in things. Being unsatisfied with the performance of my previous launchers I...

Last post

I plan to put a 40lbs test leader to absorb the snapping of the line as it pulls taught so I should be able to fire it at a decent velocity (for my...
20 Replies

6666 Views

Last post by kydavies
Wed Apr 11, 2012 1:22 am
easy to understand animations on hammer valve and spool valv

Last post by i-will
Replies: 1
by beastmode986 » Sat Apr 07, 2012 4:14 pm

First post

this seemed to really help me understand a hammer valve and how it works better maybe it can help newbies

(hammer valve is above reg)
this to and...

Last post

Also check out warpig.com. The tech pages literally disassemble the paintball markers and other equipment to make sure you understand how it works.

1 Replies

2287 Views

Last post by i-will
Tue Apr 10, 2012 11:11 pm
Help with piston

Last post by velocity3x
Replies: 6
by Packols » Sun Apr 08, 2012 12:11 am

First post

last night i just finish my piston air gun it work like a pengun but bigger. i use a tot gule as a piston and it fit very wall. when the epoxy dry i...

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proper grammer helps

Packols is in Thailand and his english is far superior to yours. You should be nice to him.....someday you may find yourself...

6 Replies

2406 Views

Last post by velocity3x
Tue Apr 10, 2012 3:11 pm
Damage pics of varrious fruits

Last post by kydavies
Replies: 6
by kydavies » Sat Apr 07, 2012 7:35 pm

First post

just some damage pics after a few hours of shooting my 1/2 ball Valve cannon (unposted because it's not 100% done) that I use for shooting lead shot...

Last post

Correct, The doom melon still needs some work......

..........done at 300psi by a 10mm lead ball :D

Nice shots. Good thing the starving children...

6 Replies

2421 Views

Last post by kydavies
Tue Apr 10, 2012 1:11 am
MINI troubles

Last post by jackssmirkingrevenge
Replies: 5
by urgle the danish cow » Sun Apr 08, 2012 12:15 pm

First post

I have been trying to make a few mini co-axial piston valve guns and have not been succeeding very much. the problem i keep having is that the piston...

Last post

do the math, here's an example:

5 Replies

3068 Views

Last post by jackssmirkingrevenge
Sun Apr 08, 2012 5:57 pm

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Pneumatic Cannons

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