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

926418 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

452327 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

460224 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

636432 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

332197 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

80218 Views

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

Topics

5 shot cannon...

Last post by Major Collins
Replies: 17
by spudkpi » Tue Aug 01, 2006 9:14 pm
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This is my first cannon i have submitted to the forum. I have previously built 3 other cannons... one ball valve, one solenoid, and one combustion....

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hrmm i think i get it lol

yeah im currently using a ball valve and ive tried making my own piston valve but have trouble with that :/ so i play...
17 Replies

5754 Views

Last post by Major Collins
Fri Nov 20, 2009 8:53 pm
Homemade Talon SS

Last post by Solar
Replies: 15
by Demon » Thu Nov 19, 2009 9:40 am
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Its been in my head for a little while from now, making a look-alike airforce condor wit a 7 x 12 mini - lathe.

The trickiest part would be no.2 as...

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Why not use a small scuba bottle instead of a paintball bottle and use a 3/4 npt threaded valve made of stainless. Would get the flow rate up a lot...
15 Replies

6982 Views

Last post by Solar
Fri Nov 20, 2009 2:58 am
Cleanest looking changable barrels

Last post by Coodude26
Replies: 2
by turner » Wed Nov 18, 2009 10:40 pm

First post

I have a 1.25 tee complete besideds the barrel set up. What do you think would be the cleanest way to have removable barrels? I was thinking having a...

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Camlocks are nice but theyll run you a fortune. You might wanna see about making your own or using threads.

EDIT: Actually, I take that back. Here's...

2 Replies

1233 Views

Last post by Coodude26
Fri Nov 20, 2009 2:36 am
Blowgun Spud with Reload Mechanism!

Last post by Major Collins
Replies: 20
by frozebyte » Wed Jul 15, 2009 8:06 am
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Hey guys,
I have to credit JSR's ghetto design to give me an idea on this. Im using an air blower a.k.a blowgun to pilot this basic spud. Its made...

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omg i use this design :o lol and and my barrel is 19 mm and the tee is like 20 and a very good fit and i use marbles cos the are around 16 to 18 mm...
20 Replies

8662 Views

Last post by Major Collins
Thu Nov 19, 2009 9:05 am
5/8-18UNF on mini-lathe

Last post by Demon
Replies: 24
by Demon » Mon Nov 16, 2009 6:17 pm
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Hello all

I would like to know for a project if a co2 airtank 5/8-18 UNF thread could be machined out of a lathe?

Air pressure would'nt be going...

Last post

Look down the page

What makes you say its 3/8 thread on a co2 paintball style tank?

If it is it would be much more simple...
24 Replies

7374 Views

Last post by Demon
Wed Nov 18, 2009 6:01 pm
Homemade Directional Control Valve?

Last post by ramses
Replies: 5
by Tantum » Tue Nov 17, 2009 11:51 pm

First post

First off, I'm really sorry if what I'm asking for can be easily found elsewhere. I've spent about 15 minutes searching the site and combing...

Last post

edit: wrong topic

on that note, a drillpress and some creativity should suffice.

5 Replies

6491 Views

Last post by ramses
Wed Nov 18, 2009 5:07 pm
small coax piston gun

Last post by jackssmirkingrevenge
Replies: 5
by jook13 » Thu Oct 23, 2008 9:36 pm

First post

So here is a small little thing I made with a few spare pieces of copper I had laying around. While one of the simplist launchers I have made, it was...

Last post

I had missed this but it caught my eye in the random cannon corner, beautifully made and very similar in terms of construction technique to the small...

5 Replies

3936 Views

Last post by jackssmirkingrevenge
Wed Nov 18, 2009 12:17 pm
Need an airtight reopenable 4" coupler - how?

Last post by Coodude26
Replies: 9
by Coodude26 » Mon Nov 16, 2009 2:59 am

First post

I need to join two pieces of 4 pvc in a way that is straight, airtight, simple, and most importantly, dismountable.

I have a 4 inline barrel-sealed...

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so are the threads a different gauge so they don't fit?, I doubt that you found any thread type for 4 pipe besides NPT ( National Pipe Thread ),
you...

9 Replies

2302 Views

Last post by Coodude26
Tue Nov 17, 2009 7:32 pm
Airtight seals

Last post by qwerty
Replies: 7
by rikukiakuchiki777 » Mon Nov 16, 2009 6:14 am

First post

I've got a project on the drawing board and, seeing as how I've never used O-rings before, I wanted to get some advice. I need a 100% seal and I wont...

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Huh? Do an o-ring joint properly and even in dynamic seals there's no need to glue them in place.

I meant the pipe :wink:

7 Replies

2252 Views

Last post by qwerty
Tue Nov 17, 2009 11:33 am
QDV vs a Mechanical chamber sealing valve

Last post by iknowmy3tables
Replies: 15
by iknowmy3tables » Fri Nov 13, 2009 5:28 pm
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I was looking at the design of Technician's QDV
and I think it's safe to describe the valve as a mechanical barrel sealing piston valve, and I was...

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alright, so there is some difference, and so can we conclude that barrel sealing piston valves usually have higher performance than their chamber...
15 Replies

4068 Views

Last post by iknowmy3tables
Mon Nov 16, 2009 8:18 pm
sprinkler valves

Last post by Hubb
Replies: 2
by spudkid10 » Sun Nov 15, 2009 11:00 pm

First post

Hello,
I've been searching this sight for a while but there is one thing still hanging over me, how the heck can I use a sprinkler valve? I've...

Last post

Check out The Sprinkler Valve.

2 Replies

1228 Views

Last post by Hubb
Mon Nov 16, 2009 8:36 am
Small piston sealing face

Last post by tghhs
Replies: 5
by Lockednloaded » Fri Nov 13, 2009 8:57 pm

First post

I am making a mini coax at the moment, but my piston is in dire need of a sealing face. I have a solid teflon piston, and was wondering is one of...

Last post

How small are we talking?

5 Replies

1877 Views

Last post by tghhs
Mon Nov 16, 2009 6:39 am
Pneumatic Golf Ball Launcher - Piston Problems

Last post by rikukiakuchiki777
Replies: 36
by rikukiakuchiki777 » Tue Sep 29, 2009 8:28 pm
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Hey,
I'm currently in the process of making my first pneumatic - a barrel sealing piston cannon (shown below)

Now I fully intended to only post...

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Yeah it is a shame, I was a little disappointed because I was having so much fun! It had been ages since I'd fired a spud gun hehe, and this was my...
36 Replies

9584 Views

Last post by rikukiakuchiki777
Mon Nov 16, 2009 4:07 am
Pvc tee piston valve

Last post by turner
Replies: 8
by turner » Wed Nov 11, 2009 3:56 pm

First post

Can anyone help me choose the fittings or a PVC tee piston for a 3/4 or barrel? I was thinking many a 1 inch tee and a reducing bushing for the...

Last post

Turnerfromdh@gmail thanks

8 Replies

2113 Views

Last post by turner
Mon Nov 16, 2009 1:05 am
Pressure at the muzzle when projectile leaves?

Last post by Ragnarok
Replies: 26
by boyntonstu » Fri Nov 13, 2009 9:27 am
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For maximum power do we want a lot of pressure at projectile exit?

What is the pressure point of diminishing return?

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Yes, I have found that accuracy is about the whole package of ballistic zones combined into what becomes the final outcome.
Pretty much, although...
26 Replies

7058 Views

Last post by Ragnarok
Sun Nov 15, 2009 12:04 pm
Extreme Shock pump problems

Last post by VH_man
Replies: 15
by VH_man » Sun Nov 08, 2009 7:46 pm
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well, in my re-discovery of spudgunning I have decided to fix my shock pump so that it actually works. Problem is, I have tried 100's of ways to make...

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Sorry to double-post, But I thought I should say that I have successfully fixed my shock pump using Gippeto's Method. I might actually make a how-to,...
15 Replies

7091 Views

Last post by VH_man
Sun Nov 15, 2009 10:09 am
Latest project specs

Last post by Solar
Replies: 9
by Solar » Fri Nov 13, 2009 3:56 am

First post

40mm Blow forward open bolt semi auto

Vertical 4 round magazine.

Open Bolt allows vertical top reloading of individual rounds into magazine....

Last post

I have the barrels done, but it is late and my camera is not here. I will test and take pics tomorrow. I did not opt to have the spiral one cut.

9 Replies

2562 Views

Last post by Solar
Sun Nov 15, 2009 3:06 am
a new type of piston valve

Last post by grock
Replies: 21
by blackhawk13 » Tue Nov 10, 2009 10:14 pm
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first, if you try to make this and it fails it is not my fault.

if this does work this will allow for an inline pneumatic piston valve. thr piston...

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there are two ways that the eq hole is usually made. one is with a hole that is so small that the lost energy is not noticealbe. unfortunately, that...
21 Replies

5812 Views

Last post by grock
Fri Nov 13, 2009 7:26 pm
My portable pneumatic

Last post by Marffy
Replies: 16
by irisher » Sun Apr 12, 2009 9:06 pm
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This is my portable pneumatic,it is full of DWV and I am well aware of it.This cannon has a shreader and Co2 adapter. It has a 1 sprinkler very...

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nice. whats the handle on the gun? it looks almost like a foregrip of some gun.
16 Replies

6967 Views

Last post by Marffy
Fri Nov 13, 2009 9:09 am
first pneumatic(piston?)

Last post by jmadden91
Replies: 5
by bradisfun » Thu Nov 12, 2009 6:36 pm

First post

hi this will be my first pneumatic and i was wondering about useing a piston and how to
if i cant find out how to i will just use a simpel setup...

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Wow what compressor do you have that can pump to 300psi? If you are going that high make sure you use all metal parts. Bunnings will have everything...

5 Replies

2096 Views

Last post by jmadden91
Thu Nov 12, 2009 7:53 pm
100 psi idea/challenge

Last post by Technician1002
Replies: 19
by boyntonstu » Tue Nov 10, 2009 5:59 pm
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Having shot a bunch of 3 10d (10 penny nails ~88 grains) through 5/8 plywood at 20 feet, I am convinced that a 100 psi challenge is open to all PVC...

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Just for grins I took my water bottle sabot and loaded it with a nail in my 7 foot barrel and launched it from my 2 inch cannon. The head of the nail...
19 Replies

4342 Views

Last post by Technician1002
Thu Nov 12, 2009 1:58 pm
pneumatic rifle problem

Last post by SEAKING9006
Replies: 18
by Marffy » Wed Nov 11, 2009 5:37 pm
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ok i got a rifle i made with a 2ft long peice of 2inch pipe as the air chamber. i also have some different size barrels that go from 2ft long to...

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D_Hall, I was reading that on a fairly small screen, so I thought you were serious until I saw the picture of you holding a salvaged Flak 88 on your...
18 Replies

4528 Views

Last post by SEAKING9006
Thu Nov 12, 2009 12:33 pm
2 valve metering vs hammer valve

Last post by iknowmy3tables
Replies: 13
by boyntonstu » Mon Nov 09, 2009 9:40 am

First post

Is there any advantage/benefit of using a valved firing chamber behind the piston valve that is pressurized from a larger chamber instead of using a...

Last post

yes D_hall is right, having two valve is unessesary, having to operate two valves is something you find in a newbie gun, to use a working piston...

13 Replies

2041 Views

Last post by iknowmy3tables
Wed Nov 11, 2009 1:41 pm
constant flow full auto :)

Last post by jackssmirkingrevenge
Replies: 64
by jackssmirkingrevenge » Tue Jan 06, 2009 10:51 am
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The older members will remember my quest for a full auto valve from a constant air supply that sometimes were epic fail and other times came closebut...

Last post

What's the rating on your valve? When the 200 pops on my RPG everyone around jumps. I can definitely see good potential for a strong shooter with a...
64 Replies

22533 Views

Last post by jackssmirkingrevenge
Wed Nov 11, 2009 1:28 am
1 inch QDV Drawings

Last post by c11man
Replies: 8
by dewey-1 » Thu Oct 29, 2009 2:36 pm

First post

I thought a separate thread was more appropriate than cluttering others.

Eventually this thread will contain a drawing for each component.

Right...

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i myself have made on matching your description(unposted) . its a 2in chamber and 1inch barrel, bothe 48in long. it works like a dream! well it works...

8 Replies

2058 Views

Last post by c11man
Wed Nov 11, 2009 12:40 am

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