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

930210 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

453650 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

471930 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

639593 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

332801 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

80483 Views

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

Topics

simple co-ax with attached stock

Last post by spudkpi
Replies: 53
by chinnerz » Thu Jan 14, 2010 10:01 pm
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this was my first attempt at a coaxial valve, so be nice

the piston was cast from hot glue, and uses a 2mm thick piece of rubber to properly seel...

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bingo! Thanks! I get it now...
53 Replies

19906 Views

Last post by spudkpi
Fri Apr 09, 2010 5:10 pm
Quick Connect Couplers: 4 balls or 6?

Last post by jhalek90
Replies: 3
by boyntonstu » Fri Apr 09, 2010 7:36 am

First post

My quick connects are ARO style 3/8 high volume with 6 locking balls.

Harbor Freight stopped selling them.

I need a few more connectors for the...

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My, 4 ball QD has been taken to 500 psi a few times. (20-30 times) and still does not leak.

Hope this helps.

3 Replies

979 Views

Last post by jhalek90
Fri Apr 09, 2010 5:02 pm
check valve effect in a piston valve using a rubber cap

Last post by Hubb
Replies: 18
by iknowmy3tables » Wed Apr 07, 2010 3:01 pm
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so I recently I've been experimenting with a secretstrike nerf gun and I learned a good bit about it's design, you can find some diagrams here...

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I don't see how the flexing of the sealing face would be a problem. If anything, it would help the seal. As the piston is pulled into the barrel, it...
18 Replies

4535 Views

Last post by Hubb
Fri Apr 09, 2010 8:01 am
The barrel was the weekest part

Last post by ONEWING
Replies: 5
by tghhs » Mon Apr 05, 2010 9:24 pm

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So i was out testing this launcher:

After i'd just given it a new chamber and barrel, because it had a tinny leak through the front bushing that...

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True abinthe, difference between crushing and exploding. Its like the ,pvie of the gas truck that imploded or a 44 gal drum that will implode when...

5 Replies

3301 Views

Last post by ONEWING
Fri Apr 09, 2010 2:11 am
Bergles coaxial

Last post by xboxteen01
Replies: 11
by xboxteen01 » Sat Apr 03, 2010 3:01 pm

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Think this would work? Ive never seen this design before, just asking for some input before i get into it.

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In terms of dead space, disregarding the 4 way cross, anything else dead space or unneeded?

11 Replies

3655 Views

Last post by xboxteen01
Fri Apr 09, 2010 12:34 am
The Trom-Boyn has evolved into a simpler design.

Last post by spudkpi
Replies: 4
by boyntonstu » Thu Apr 08, 2010 9:05 pm

First post

The Trom-Boyn has evolved into a simpler design.

Copper Air Rifle Components and Assembly

The Trom-Boyn has evolved into a simpler design....

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HAaha no i just noticed all the wind and the palm in the back and I am sitting here in Louisville, Ky with just poo poo weather. Oh well... you win...

4 Replies

1331 Views

Last post by spudkpi
Thu Apr 08, 2010 9:35 pm
My First Pneumatic Rifle

Last post by alex_esa
Replies: 9
by alex_esa » Tue Apr 06, 2010 11:41 pm

First post

Hello anybody this is my first spud gun, I have looked around and get many ideas how to do this. I have learned many things during the construction...

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I have calculated that my air chamber should take around of 15 cubic inches. So I'm planning to make a high pressure pump that can use in my next...

9 Replies

4577 Views

Last post by alex_esa
Thu Apr 08, 2010 12:40 pm
micro compressor, the final attempt

Last post by chinnerz
Replies: 37
by chinnerz » Tue Mar 30, 2010 5:19 pm
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i have been mucking around with those cheapo micro compressors for a while now, and i think i may have isolated the issue i find with them. the motor...

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umm..... i think..... hmm.
did you try this with a compressor tank pumped up to 60psi once?
think it was you, not sure though
37 Replies

13110 Views

Last post by chinnerz
Thu Apr 08, 2010 7:49 am
Regulation of my co2 setup!!Please help!!

Last post by spudkpi
Replies: 18
by spudkpi » Mon Apr 05, 2010 3:47 pm
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OKay heres the pics and I need to know how to adjust the paint ball regulator? I don't know how to do it.. I have the perfect setup for a 1/4 ball...

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You have been very helpful and I appreciate it! Ill let you know how it goes.
18 Replies

3824 Views

Last post by spudkpi
Wed Apr 07, 2010 5:48 pm
Idea for pilot valve.

Last post by Bluetooth
Replies: 14
by Gun Freak » Tue Apr 06, 2010 7:57 pm

First post

So you hook your gun up to a compressor via quick connect and it pressurizes. Then to pilot it, simply disconnect the female connector leaving the...

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Well a lot of people use a sprinkler valve, but I would recommend a tee piston piston valve piloted by a ball valve as a pilot . Or, you could be...

14 Replies

4472 Views

Last post by Bluetooth
Wed Apr 07, 2010 4:10 pm
Small Oxygen cylinder found.

Last post by boyntonstu
Replies: 9
by boyntonstu » Mon Apr 05, 2010 1:20 pm

First post

Looks like Aluminum. about 3 x 11 . What pressure is safe in it?

It contained some Oxygen and I let it out with the screw valve.

How does the...

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Oxygen threads should be opposite to normal threads. Keep that in mind.

Wrong.. Fuel is used with left hand threads. Ask any welder. Old style POL...

9 Replies

2786 Views

Last post by boyntonstu
Wed Apr 07, 2010 4:08 pm
Balloon tank valve. (push button)

Last post by Gun Freak
Replies: 5
by reedfe » Tue Apr 06, 2010 8:53 pm

First post

Pretty explanitort in the video. What should I use this for

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Well it holds a fully pressurized tank of helium. XD
Regulated to 5 psi :D

5 Replies

1853 Views

Last post by Gun Freak
Wed Apr 07, 2010 3:53 pm
Need input on this valve

Last post by Gun Freak
Replies: 19
by Gun Freak » Sun Apr 04, 2010 7:39 pm
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I drew this up today, does everything seem right? If you need clarification, just ask, because I didn't label everything. It should be...

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Oh yeah I've seen those, thanks. The hose clamp should be taken off though. You think it would be tight enough without it? Also, the need for a...
19 Replies

6854 Views

Last post by Gun Freak
Wed Apr 07, 2010 3:51 pm
Compact Piston Valve Techniques

Last post by Bluetooth
Replies: 8
by Bluetooth » Mon Apr 05, 2010 7:15 pm

First post

I have made piston valves in the past, but never disassemble-able (yes, I do make up words), but I want to make one of these such valves, I...

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yet another relevant thread/link to mention
and I don't believe bluetooth should attempt the supah valve without a lathe
I think one important...

8 Replies

4213 Views

Last post by Bluetooth
Wed Apr 07, 2010 3:37 pm
Pellet Gun V2

Last post by clemsonguy1125
Replies: 29
by clemsonguy1125 » Tue Apr 06, 2010 7:03 pm
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Heres my second version of the pellet gun I posted earlier. The main improvements are a stock made from thin walled PVC, a larger hole for the valve...

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I figure i will glue the barrel in the barrel part of the shell and cut off the hammer with a dremal

Edit-Airsoft grip didnt work so I used pvc
29 Replies

9295 Views

Last post by clemsonguy1125
Wed Apr 07, 2010 1:12 pm
Barrel For Soda Can Cannon

Last post by Technician1002
Replies: 15
by clemsonguy1125 » Sun Apr 04, 2010 7:24 pm
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After seeing the soda can cannon on myth busters i really wanted one. Rather than building a whole new cannon I figured Id get a new barrel for my...

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I found if you buy the pipe by pressure rating, the 200 PSI stuff is just a tad small. Get the 160 PSI stuff and it works great.

Here is a photo of...
15 Replies

11628 Views

Last post by Technician1002
Tue Apr 06, 2010 11:40 pm
Pressurizing my gun to 600 psi in 40 seconds.

Last post by Bluetooth
Replies: 13
by boyntonstu » Tue Mar 30, 2010 2:41 pm

First post

Taking the advice of this YouTube video:

I decided to pressurize the input to my compressor.

I soldered a 1/4 male quick connect x 3/8 NPT...

Last post

600 psi is nothing to one of these. I believe either Brian or Poland (or both) once took theirs over the 900 psi mark. These things are designed to...

13 Replies

6130 Views

Last post by Bluetooth
Tue Apr 06, 2010 10:31 pm
My New Massive Fridgy

Last post by c11man
Replies: 31
by c11man » Fri Apr 02, 2010 7:22 pm
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WARNING
Reading this thread may cause extreme cases of CJS (Compressor Jealousy Syndrome)
By scrolling down you agree that I C11MAN and not...

Last post

my two main guns currently are all galvanised/brass so those dont rust. and this doesnt have similar flow to shop compressors it exceds the flow of...
31 Replies

10695 Views

Last post by c11man
Tue Apr 06, 2010 8:31 pm
Cannon venting out pilot not barrel

Last post by POLAND_SPUD
Replies: 7
by spudkpi » Sat Apr 03, 2010 5:44 pm

First post

Picture explains most of it but it wont hold hardly and pressure and the air all vents out of the pilot blowgun. What have I done wrong... I have...

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lol I don't get it... I've never seen a QEV that leaks.. could you disassemble it and post pics? there must be something wrong with it

7 Replies

1692 Views

Last post by POLAND_SPUD
Tue Apr 06, 2010 5:51 pm
Screws on piston valves

Last post by Gun Freak
Replies: 10
by Gun Freak » Sun Apr 04, 2010 4:33 pm

First post

I see some people put screws around the pilot side of barrel sealing piston valves housed in a T. Why is this?

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K thanks Mark. Exactly the answer I was looking for.

10 Replies

2442 Views

Last post by Gun Freak
Mon Apr 05, 2010 6:21 pm
Let's talk PSI gauges ?

Last post by jhalek90
Replies: 3
by tatfree » Sat Apr 03, 2010 11:21 am

First post

I am going to be running 200 PSI max in my little toy , but wanted a PSI gauge that would go slightly above that so I can tell if I ever go over. I...

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Oh, oh oh oh oh! i know this one.

Go to a paintball store/website.

I got mine at the local paintball store. like... 8 bucks. 0-400 and they have a...

3 Replies

1944 Views

Last post by jhalek90
Mon Apr 05, 2010 4:02 pm
Epoxy question

Last post by Demon
Replies: 33
by Demon » Tue Mar 30, 2010 11:01 am
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Here is a question that might make a certain know member get out of is cave :roll:

Here is some info : as you all know, i am working on a 6 mm...

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I have finally choosed the mechanical repair way ( made two holes and pluged them with steel ) Its very strong, thank for your help .
33 Replies

9782 Views

Last post by Demon
Mon Apr 05, 2010 8:42 am
site that sells QEV's

Last post by qwerty
Replies: 4
by bighead33 » Sat Apr 03, 2010 10:11 pm

First post

last night i was in Wikipedia's page for spud guns and the first link listed was UK Spud gun Community and they sell both Q.E.V.s and pilot valves....

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I ordered a QEV and other parts from that site and they took 3 months to arrive with losts of hassle involved so i wouldn't advise it. Try something...

4 Replies

1451 Views

Last post by qwerty
Sun Apr 04, 2010 1:45 am
baffles in silencers

Last post by Ragnarok
Replies: 16
by Dixticat » Sat Apr 03, 2010 8:58 am
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Hello, I am coming from a french forum ( ) and I have a question which you could answer better.
I am making a silencer for my 8mm pneumatic canon (I...

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It also means you don't need hearing protection to use it without damaging your ears.
I wouldn't use it as an excuse to not use basic safety gear....
16 Replies

8601 Views

Last post by Ragnarok
Sat Apr 03, 2010 7:49 pm
piston questions

Last post by mark.f
Replies: 9
by gabeb123 » Fri Apr 02, 2010 10:50 am

First post

ok i got 2 questions

1. i want to make a piston valve but i don't have to equipment to machine pvc so i decided i will either make it out of wax or...

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If you're making a 2 piston 1-1/4 PVC SCH-40 fittings fit very well in 2 SCH-40 pipe, and with patience can be made to include O-ring grooves by...

9 Replies

3451 Views

Last post by mark.f
Sat Apr 03, 2010 2:42 pm

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