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

1125046 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

552179 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

821144 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

967041 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

374866 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

92394 Views

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

Topics

My First Pressure gun ever. Over/Under Design, need help.

Last post by Yukondano2
Replies: 116
by Yukondano2 » Fri Oct 29, 2010 7:27 pm
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Hey, I've dry fit a somewhat done PVC Gun.... I'm fairly worried on a few design flaws already and I'm running short on cash.
I was reading another...

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I wouldn't advise trying to build pneumatic cartridge system (here JSR and I are talking about the same thing) before you've built a piston valve...
116 Replies

28332 Views

Last post by Yukondano2
Thu Nov 25, 2010 12:39 pm
Marble loading design

Last post by mlz3000
Replies: 8
by HoppinS10 » Tue Nov 23, 2010 8:03 pm

First post

So I am currently working on a QEV cannon and while I wait for my 3-way valve to arrive I decided I would start working on a breech loading design....

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That sounds awesome! :shock:

You'll have to make sure that the breech stays open for long enough, or the marble might not fall in, but that sounds...

8 Replies

2177 Views

Last post by mlz3000
Wed Nov 24, 2010 8:18 pm
1.5" chamber sealing sprinkler valve

Last post by Lockednloaded
Replies: 25
by Lockednloaded » Mon Nov 22, 2010 8:46 pm
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I've got two 1.5 sprinkler valves that I would like to mod, obviously, these are not cheap valves, so I need an expert opinion before I start...

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so its ok for me to straight up get rid of the guide rod? thats going against my common sense, I'm thinking I open the flow control to max and drill...
25 Replies

5605 Views

Last post by Lockednloaded
Wed Nov 24, 2010 2:40 pm
Custom end caps for ally pipe?

Last post by jackssmirkingrevenge
Replies: 43
by chinnerz » Thu Nov 18, 2010 3:11 am
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Hey guys, it has been 1 year since i made my last rifle and with school out, i got the urge once again :) :)

I am planning on using some square ally...

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I've been promoting the use of binary adhesives in spudguns for as long as I can remember, because the benefits it has in terms of fleshing out ideas...
43 Replies

9477 Views

Last post by jackssmirkingrevenge
Tue Nov 23, 2010 2:08 am
QEV triggering help

Last post by jackssmirkingrevenge
Replies: 23
by HoppinS10 » Wed Nov 17, 2010 6:13 pm
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Hello all I have been viewing this site for a while now and finally decided to build a QEV cannon. I purchased a 3/4 inch valve from mcmaster and...

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But I am still left wondering why even a sprinkler valve didn't dump the pilot volume fast enough.

Ah, but it worked, just not as effectively:

I...
23 Replies

6023 Views

Last post by jackssmirkingrevenge
Mon Nov 22, 2010 11:20 pm
Blowback questions / help please

Last post by jackssmirkingrevenge
Replies: 13
by Patto » Wed Nov 17, 2010 9:43 pm

First post

Hey all,

I've just come back after a while off and am now ready start up again. And for as long as i can think i've wanted to build a blow back...

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i've thought about this design before but doesn't everyone say that your going to need high pressure for this system to work ?

I used to think...

13 Replies

6690 Views

Last post by jackssmirkingrevenge
Mon Nov 22, 2010 8:06 am
Burst Disk Pneumatic Design?

Last post by mlz3000
Replies: 14
by mlz3000 » Sat Nov 20, 2010 11:49 pm

First post

I was wondering how effective this would be.

The gun would have two burst disks (one in each union in the diagram).
The two burst disks would have...

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This way we wouldn't have to wait while the compressor took it up those last few PSI to burst the disk, we could just vent a little bit of air. who...

14 Replies

3759 Views

Last post by mlz3000
Mon Nov 22, 2010 1:08 am
best way to hold a burst disc other than a cam loc

Last post by Moonbogg
Replies: 5
by JDP12 » Sun Nov 21, 2010 3:51 pm

First post

Hey all, I've been trying to figure out a good way to seal a burst disc in a pipe other than a cam loc or union.

I had a topic on this ahwile ago,...

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If the disc was rigid, maybe just the pressure behind it would force it against an o-ring and cause it to seal. Other than that I don't know.

5 Replies

1024 Views

Last post by Moonbogg
Sun Nov 21, 2010 11:17 pm
QEV with Inflator

Last post by jackssmirkingrevenge
Replies: 8
by HoppinS10 » Sun Nov 21, 2010 10:54 am

First post

I was looking at some CAD drawings made by dewey-1 and noticed one of his drawings had which looks to be an air inflator hooked directly up to the...

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If you're worried about modifiying the original diaphragm, you could always make your own out of suitable material ;)

8 Replies

1881 Views

Last post by jackssmirkingrevenge
Sun Nov 21, 2010 11:16 pm
Are these QEV's?

Last post by POLAND_SPUD
Replies: 13
by Gun Freak » Sun Nov 21, 2010 11:47 am

First post

I found some neat little things on Clippard, but I dunno if they are QEV's or not... Anybody know?

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Nope... they don't ship stuff to Europe
Clippard europe handles orders there (or local distibutors)

Part Number: MJVO-3
List Price: € 18.58 Euro...

13 Replies

3881 Views

Last post by POLAND_SPUD
Sun Nov 21, 2010 7:34 pm
copper gun...

Last post by ckman
Replies: 5
by ckman » Sat Nov 20, 2010 1:48 pm

First post

yeeoooo. This is my new gun I just built, it took me about 2 or three hours last night, after a home depot run. some specs

barrel: about 2 feet of...

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Thanks. It'll take me about a week to do the pilot valve stock extension but without a doubt I'll do it.

5 Replies

5245 Views

Last post by ckman
Sun Nov 21, 2010 12:21 pm
Is there anyway to salvage my gun? (leak)

Last post by mlz3000
Replies: 7
by shimmer » Fri Nov 19, 2010 2:39 pm

First post

I made a bad decision with the inlet valve of my pressure tank. I used a schrader valve from a bicycle, thinking if I left some of the rubber on the...

Last post

I got one here .

7 Replies

2081 Views

Last post by mlz3000
Fri Nov 19, 2010 8:17 pm
3-way NO solenoid

Last post by PVC Arsenal 17
Replies: 8
by PVC Arsenal 17 » Thu Nov 18, 2010 6:21 pm

First post

Maybe I'm just stupid... but I can't seem to find one. I need a simple, compact and cheap 3-way Normally Open Solenoid valve. It doesn't seem like an...

Last post

Ah... didn't catch that. That's actually pretty neat.

8 Replies

1754 Views

Last post by PVC Arsenal 17
Fri Nov 19, 2010 2:44 pm
My second cannon

Last post by mlz3000
Replies: 13
by mlz3000 » Tue Nov 16, 2010 10:40 pm

First post

This is my second cannon - the CAKE II.

It is intended to function almost identically to the CAKE I

The valve is a 1 sprinkler valve modded with a...

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I have considered that. Based on how nice it is to use the specialty tennis ball barrel, I figured I would order one of these . I'll probably order...

13 Replies

4734 Views

Last post by mlz3000
Wed Nov 17, 2010 9:35 pm
Help troubleshooting - tennis ball attachment not working

Last post by Technician1002
Replies: 5
by Guaps » Tue Nov 16, 2010 2:56 pm

First post

I made this exact piston valve (MrRedRooster)

I put an adapter on there so it has a removable barrel, and removable canister. I made a 3/4...

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The rate of flow into the large diameter tennis ball barrel is more important than just a large chamber. I tested a similar small chamber/large...

5 Replies

1769 Views

Last post by Technician1002
Tue Nov 16, 2010 6:52 pm
Primitive med pressure sprinnger

Last post by metalmeltr
Replies: 3
by metalmeltr » Sun Nov 14, 2010 7:03 am

First post

The chamber is 6x3/4 the barrel is 1/2x43 these values mean nothing the barrel length is just the piece i had laying around.
The 1/4 ball valve is...

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The only reason for the rstrictive valve is that is gun was not origonally intended for high performance, this is an earlier incarnation of it
I...

3 Replies

2446 Views

Last post by metalmeltr
Tue Nov 16, 2010 6:47 pm
how can i make a piston valve

Last post by MrCrowley
Replies: 1
by qwert123 » Mon Nov 15, 2010 8:31 pm

First post

OK so i need to make a .75 piston valve. i have a .75 tee an i would prefer to use metal parts even though i will operate th cannon under 200 psi to...

Last post

Stop posting these topics. Stop being lazy and do your own research. There are tutorials on this website, even as stickys, so go look for them and do...

1 Replies

1312 Views

Last post by MrCrowley
Mon Nov 15, 2010 8:37 pm
1/4 Inch QEV

Last post by ShowNoMercy
Replies: 4
by ShowNoMercy » Mon Nov 15, 2010 4:07 pm

First post

Good enough for a small lil paintball single single shot gun?

Prob running ~115 psi

Would need to be shooting well under 300fps.

Last post

Danke!

Hopefully order it this weekend.

4 Replies

3267 Views

Last post by ShowNoMercy
Mon Nov 15, 2010 5:02 pm
semi automatic cylinder,french airgun

Last post by budabob07
Replies: 16
by jules56 » Sun Oct 10, 2010 12:47 pm
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Hi ,this my new project, the idea just Polandspud mister, thank you to him! 8)
caliber 8mm ,Steel,regulated to 5 bar for video ... :wink:

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cool. for the reloading block, did you weld an inlet on a tee? or is it just 2 tees next to each other?
16 Replies

15613 Views

Last post by budabob07
Mon Nov 15, 2010 4:40 pm
semiauto MK III - vids

Last post by POLAND_SPUD
Replies: 27
by POLAND_SPUD » Thu Feb 04, 2010 3:40 pm
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This is the 3rd version of my semiauto pneumatic

It operates exactly like MK I and MK II:
The air cylinder is hooked up to the chamber and it...

Last post

ohh you must have seen it
27 Replies

18053 Views

Last post by POLAND_SPUD
Mon Nov 15, 2010 4:07 pm
12v battery

Last post by Technician1002
Replies: 12
by metalmeltr » Sat Nov 13, 2010 11:09 am

First post

I wouldlike to build a cannon like this I need to find an affordable 12v battery and charger combination that is small and compact, i would prefer to...

Last post

For the math challanged, 2500 mah is 2.5 Amp Hours or about 2wice the capacity of the lead acid battery in the photo. The LiPo is able to provide a...

12 Replies

3154 Views

Last post by Technician1002
Mon Nov 15, 2010 12:48 am
A new Men ! A new project !

Last post by wyz2285
Replies: 16
by STaK » Fri Nov 12, 2010 2:20 pm
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Hello, I'm STAK I'm from France normandy high (to be precise).

I am currently enrolled on Patator'forum (link: www.patator.frbb.net).

I introduced...

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Oh that gun is so french :lol: .i saw that gun on youtube :D apparentlly it works nice.
16 Replies

5259 Views

Last post by wyz2285
Sun Nov 14, 2010 6:04 am
Valveless launcher

Last post by POLAND_SPUD
Replies: 57
by POLAND_SPUD » Sat Jun 05, 2010 6:18 am
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Most of you are familiar with the concept of the valveless launcher...
Theoretically it can offer the best performance (similar to that of a burst...

Last post

I got all of them for 4$ :D (yeah I know I told it at least 400 times)
try ebay - if you're lucky you can find them for a couple of bucks

what the...
57 Replies

31052 Views

Last post by POLAND_SPUD
Sat Nov 13, 2010 9:06 pm
Finally time to step up

Last post by Selador
Replies: 8
by Selador » Fri Nov 12, 2010 10:22 pm

First post

Ok, I finished my very first build almost a week ago.

I didn't run in here and post a pic right away, because, well, it's pretty much run-of-the...

Last post

I'll let you create a whole new topic if you want and you can start from scratch. Once you've made your new topic I can merge the replies from this...

8 Replies

2995 Views

Last post by Selador
Sat Nov 13, 2010 5:47 pm
What is the limiting factor

Last post by Selador
Replies: 10
by Guaps » Mon Oct 18, 2010 12:44 pm

First post

I am building a cannon with an interchangeable barrel so I can shoot anything from marbles (~1/2 barrel) to full potatoes (~2 barrel).

If I use the...

Last post

I didn't think there would be a problem.

But you never know.

So I thought I'd check with the collective wisdom of experience, here.

Thank you....

10 Replies

2438 Views

Last post by Selador
Fri Nov 12, 2010 12:50 pm

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