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

1669003 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

754957 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

982585 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

1165622 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

466524 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

131528 Views

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

Topics

Weight of a 6mm BB

Last post by MrCrowley
Replies: 8
by Mitchza89 » Tue Jul 03, 2007 6:28 am

First post

Hey guys, does anyone know the weight of a 6mm bb? I've been told both .25grams and 1-1.5 grams :s I really don't know which is right.

Thanks alot,...

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6mm BB Bullets:
Metal BB's = .88g
Plastic BB's = .12g

Took me a second to find the answer in google even though I already knew it. Simple search of...

8 Replies

8328 Views

Last post by MrCrowley
Tue Jul 03, 2007 7:34 am
Diaphragm vs. Piston

Last post by chaos
Replies: 44
by schismatized » Sun Jul 01, 2007 12:00 pm
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how much better performance do you get from a diaphragm compared to a piston? diaphragms must be a relatively new trend because i never used to see...

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just to clear up my last post... yer i ment use a foam noodle as a bumper, they do compress and re-expand, and a whole noodle is like $3
44 Replies

9315 Views

Last post by chaos
Tue Jul 03, 2007 2:26 am
Leak.

Last post by TwitchTheAussie
Replies: 5
by Intel Xeon » Mon Jul 02, 2007 4:17 pm

First post

I recently began building a coaxial cannon but found, to my dismay, that I had ground the bushing too far. The pipe has about 3/4 mm of clearance...

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Yeah epoxy it I say. Its more cost effective

5 Replies

1830 Views

Last post by TwitchTheAussie
Tue Jul 03, 2007 1:08 am
my friends ( attempt) at a spudgun

Last post by Modderxtrordanare
Replies: 3
by gotbass7 » Mon Jul 02, 2007 11:10 pm

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this is under pneumatic cause apparently thats what it was supposed to be. i saw on my friends table during a party a bunch of pvc that was put...

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This is the showcase. I see no gun. :P

It would be hilarious if there was a picture of what you described though. :lol:

3 Replies

1202 Views

Last post by Modderxtrordanare
Tue Jul 03, 2007 12:55 am
What size coaxial should I make?

Last post by noname
Replies: 15
by origin unknown » Mon May 28, 2007 9:23 pm
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I am having trouble on deciding on the size of the new coaxial I want to make. I am planning on making the piston out of wood. I just need some...

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Don't expect the performance to be great. My most recent coaxial pistol has a 1/2 barrel and a 2 chamber but only shoots about 150 feet.
15 Replies

3410 Views

Last post by noname
Mon Jul 02, 2007 11:07 pm
Shrader Valve

Last post by xops007
Replies: 15
by xops007 » Sun Jul 01, 2007 9:03 pm
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can u buy a Shader Valve at homedepo and if soo how much??

Last post

k.... thanks guys
15 Replies

5087 Views

Last post by xops007
Mon Jul 02, 2007 10:18 pm
Coaxial Bazooka?

Last post by Hailfire753
Replies: 15
by Hailfire753 » Sat Jun 30, 2007 3:45 pm
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Hey peeps, waz up. Sry for any noobishness that follows, but my first spudgun is a combusion, and was looking to make a pneumatic.

I want to make...

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Uummm... I think I will go with a coaxial bazooka also. To compensate for the 8:1 C to B ratio, at the front I will add a female adapter that does...
15 Replies

3758 Views

Last post by Hailfire753
Mon Jul 02, 2007 4:41 pm
Where do you get your QEVS?

Last post by origin unknown
Replies: 6
by socoj2 » Mon Jul 02, 2007 8:35 am

First post

have yet to find a decent suplier...

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Mead fluid dynamics makes piston QEVs, not the usual diaphram ones. Their website has a place were you can find the retailers of their products....

6 Replies

1572 Views

Last post by origin unknown
Mon Jul 02, 2007 4:06 pm
ball piston?

Last post by mopherman
Replies: 21
by pyromaniac » Sun Jul 01, 2007 7:07 pm
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i remember a topic on haveing a ball piston. Well today at ym family ruinion my cousins brought lacross sticks and a ball. i began to think. would...

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It seems like it would work. The only problem i can see is that the ball gets jammed in the barrrel port and refuses to pilot.
21 Replies

4517 Views

Last post by mopherman
Mon Jul 02, 2007 3:28 pm
Piston problem

Last post by spud yeti
Replies: 13
by spud yeti » Mon Jul 02, 2007 4:28 am

First post

Hey, I have just finished my coaxial piston valve cannon and have a problem. The piston wont seal against the barrel and air is flowing into the...

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yeah, im pretty bleek at the moment, because i tried pumping my gun up, but the piston wouldnt seal. But on the bright side, im going to the store...

13 Replies

2040 Views

Last post by spud yeti
Mon Jul 02, 2007 3:09 pm
Two Piston design options.

Last post by rednecktatertosser
Replies: 11
by Panzerfaust » Fri Jun 29, 2007 5:04 pm

First post

While after the poor performance of my Tee Piston (see ) I have decided to rebuild it putting male/female adapter that allows piston access in front...

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True but also consider the vaccum effect behind the piston assisting the opening, as for the orings you can use a drill or drill press and a hack saw...

11 Replies

2293 Views

Last post by rednecktatertosser
Mon Jul 02, 2007 12:51 pm
shock pumps

Last post by spud yeti
Replies: 16
by roughboy » Thu Jun 28, 2007 7:04 pm
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Can someone tell me what is the strongest shock pump there is? what i mean is what's the largest psi number there is on a shock pump? the strongest...

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That sounds really cool. did you post the list under the how to section im guessing? Im interested :D
16 Replies

4946 Views

Last post by spud yeti
Mon Jul 02, 2007 9:12 am
pneumatic valve problem

Last post by pat123
Replies: 10
by pat123 » Fri Jun 29, 2007 9:25 am

First post

hi I have a 2inch by 24 inch chamber and a 1/2inch barrel. my sprinkler valve honks when i try to pump up the chamber so i bought a ball valve to go...

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i tried eveything I could think of to seal the blow gun. I finally got the adapter sealed and now it leaks where the adapter screws into the blowgun.

10 Replies

3501 Views

Last post by pat123
Mon Jul 02, 2007 8:50 am
Pneumatic Pirate Ship Cannon

Last post by Jolly Roger
Replies: 15
by andybigfoot2 » Fri Jun 29, 2007 1:56 pm
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Me and my friends are building a pirate ship. We need to make cannons for this vessel. We have an unlimited budget and we are looking for a powerful...

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I reckon a well made combustion would be the go. Got the bang and the flames and all. If you look around on here in the forums and wiki you'll find...
15 Replies

6408 Views

Last post by Jolly Roger
Mon Jul 02, 2007 7:07 am
what will happen if...?

Last post by Hotwired
Replies: 6
by Specialist » Sat Jun 30, 2007 10:23 pm

First post

well im working on a ball valve copper gun and im sweating the pipes together. i sweated evrything except the ball valve and barrel. there are little...

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I've never seen endfeed ballvalves... I'd have thought it was a pretty bad idea to make ones with seals that melt as you attach them to your...

6 Replies

2663 Views

Last post by Hotwired
Mon Jul 02, 2007 4:28 am
piston rifle-"bang!!" sound

Last post by jackssmirkingrevenge
Replies: 4
by roughboy » Mon Jul 02, 2007 12:01 am

First post

What makes the bang!! sound on a coaxle piston rifle?Is it the piston hitting the pumper or is it air gushing out the barrel at a very very fast...

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It's the muzzle blast, basically the air exiting the muzzle is breaking the sound barrier (though this doesn't necessarily mean your projectile is...

4 Replies

2287 Views

Last post by jackssmirkingrevenge
Mon Jul 02, 2007 2:31 am
is there a way to make a old propane tank into a air tank

Last post by chaos
Replies: 25
by 666lucky693 » Sun Jul 01, 2007 1:06 am
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i was wondering if u could use an old propane torch tank as a small air tank or use a big propane tank as a air tank if any one knows how send me the...

Last post

Just use the liquid propane already within the tank. The pressure will be a constant 90 - 120psi, and a 20lb tank would outlast your gun.

exactly
25 Replies

11211 Views

Last post by chaos
Sun Jul 01, 2007 10:51 pm
T Shirt shooter Idea

Last post by turbohacker
Replies: 12
by turbohacker » Sat Jun 30, 2007 2:14 am

First post

I built a couple of tshirt guns for high schools and I think that it is time for me to take it to the next level. I came up with this idea, it is...

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Sorry about not getting back to you guys very soon, Ive been busy. Well to start off, thank you very much for the comments, I will take them to...

12 Replies

3423 Views

Last post by turbohacker
Sun Jul 01, 2007 9:17 pm
How can i make a piston for a 2" piece of pipe

Last post by 666lucky693
Replies: 14
by 666lucky693 » Sat Jun 30, 2007 11:05 pm

First post

i am going to make a coaxial piston cannon and i need to make a piston can any one give me a easy design for a piston that size and i am wondering if...

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well i made a mistake the pipe is only one inch so i made a piston for it and now all i need is the end cap and valve and its done

14 Replies

3155 Views

Last post by 666lucky693
Sun Jul 01, 2007 8:13 pm
Sprinkler Valve Timer

Last post by pyrojoe
Replies: 14
by pyrojoe » Sat Jun 23, 2007 10:39 am

First post

Hi guys. I have been wanting to build an automated tennis launcher for some time now. I know I could just go out and buy one, but that takes away the...

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Thanks for the help guys. I think I am going to try to use a modified sprinkler valve with a pop-off valve as the pilot. Correct me if I am wrong...

14 Replies

4609 Views

Last post by pyrojoe
Sun Jul 01, 2007 4:55 pm
Burst Disc Mortar

Last post by noname
Replies: 13
by noname » Sun Apr 15, 2007 2:10 pm

First post

Well, this is just a burst disc cannon, and unfortuneately it's stronger than the barrel sealer 4 times its size.
Chamber: 1 foot of double layered 2...

Last post

Read my post, the one that's right above yours.

13 Replies

3557 Views

Last post by noname
Sat Jun 30, 2007 7:38 pm
my first pneumatic. now with breech loader.. damage shots!!!

Last post by SpudBlaster15
Replies: 22
by tylerthetatertosser » Mon Jan 22, 2007 9:38 pm
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this was my first gun leave your comments about it it was constructed of pvc and barrel is half inch and chamber is 1.5 inch

my gun

sprinkler...

Last post

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse...
22 Replies

12209 Views

Last post by SpudBlaster15
Sat Jun 30, 2007 2:26 pm
GGDT Problems

Last post by Jolly Roger
Replies: 8
by Jolly Roger » Fri Jun 29, 2007 10:22 pm

First post

I don't know how many others out their have noticed this as well but when using the GGDT program to find out some figures on my cannons, I find it...

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Cool well that explains heaps. Cheers guys. Just using it for the first time. Seems to be pretty handy by the sounds of things. Again thanks guys.

8 Replies

1793 Views

Last post by Jolly Roger
Sat Jun 30, 2007 10:05 am
Help me work some stuff out... Bolt action..

Last post by socoj2
Replies: 3
by socoj2 » Fri Jun 29, 2007 9:25 am

First post

Again another paintball launcher thread... I am trying to duplicate this launcher..

Air source

68 CI/ 4500 PSI compressed Air Tank.

needs....

Last post

NM. i found the correct solenoid and how to use it to discharge a QEV..

now for some math..

24 inch barrel
22 CU chamber
100 PSI

Gets me about 260...

3 Replies

1236 Views

Last post by socoj2
Fri Jun 29, 2007 10:25 pm
Question about my fill valve

Last post by subterranean
Replies: 17
by Pilgrimman » Thu Jun 28, 2007 2:09 pm
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Oh boy! My first post!

I have a valve from an auto parts store, and it looks like a schraeder (God I hope I spelled that right :D ) valve, in terms...

Last post

wal-mart baby! all of the stores near me carry alot of them check it out!
17 Replies

7670 Views

Last post by subterranean
Fri Jun 29, 2007 9:27 pm

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