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...

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thank you for creating this website is there anything i can do to help
15 Replies

930054 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

453611 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...

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great job everyone
64 Replies

471889 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

639505 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

332769 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

80475 Views

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

Topics

Air Rifle and Pistol- Update Painted

Last post by spudtyrrant
Replies: 13
by Ranger » Sat May 29, 2010 8:34 pm

First post

I've been lurking around on this forum for awhile, time for an introduction.

My name is Clayton Ranger Moore, I'm 16 and a sophmore in highschool, I...

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Try vegetable oil on the schrader valve. You can use KY Jelly on the ball valve to make it easier to turn, use a long stick to apply it.

Welcome to...

13 Replies

5865 Views

Last post by spudtyrrant
Mon May 31, 2010 9:58 am
Best pilot valve

Last post by Crna Legija
Replies: 24
by clemsonguy1125 » Sun May 30, 2010 7:04 pm
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For my 1 inch, 1/2 porting PVC piston valve sniper I was wondering what the best pilot valve would be, I considered these valves.
1. Sprinkler...

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you can make the sealing face teh check valve like the Brass Harpoon gun
24 Replies

4275 Views

Last post by Crna Legija
Mon May 31, 2010 12:44 am
Need help getting Semi consistantly.....

Last post by BearMan
Replies: 19
by BearMan » Fri May 28, 2010 9:11 pm
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Guys,

Just played with my first build..... a cannon very similar to

It is for shooting marshmallows in the yard with my son. We have been having a...

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..... If the piston seals that well with the pipe it slides in, you may have a sealing face issue. How soft is the rubber? Is the piece of pipe...
19 Replies

4033 Views

Last post by BearMan
Sun May 30, 2010 9:28 pm
Brakeline Attachment

Last post by jimmy101
Replies: 31
by clemsonguy1125 » Fri May 28, 2010 6:29 pm
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For a upcoming BB Rifle I want to attach a piece of 1/4 brake line to a galvinised steel reducer, but the adapter that comes with it doesnt fit. It...

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but hot melt glue will, As will bubble gum, Gorilla snot, ...

especially if it is applied on the high pressure side of the fitting and not the low...
31 Replies

8123 Views

Last post by jimmy101
Sun May 30, 2010 3:49 pm
double pilot vertical piston

Last post by Crna Legija
Replies: 6
by kydavies » Sat May 29, 2010 12:52 pm

First post

a while ago i was trying to wrap my head around the idea of modding my super cannon from a ball valve to a piston valve but because its already built...

Last post

have you read this

6 Replies

1563 Views

Last post by Crna Legija
Sat May 29, 2010 8:22 pm
Connecting shrader, blow off, pressure gauge

Last post by Gun Freak
Replies: 17
by ZeroGz » Wed May 26, 2010 12:34 pm
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Building my first pneumatic and want to make sure i do the right things here. From searching ,i know i need to tap at double wall joints. Do i simply...

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If you want it tight, put the teflon tape on first, thread it in, and LEAVE it in.
17 Replies

4580 Views

Last post by Gun Freak
Fri May 28, 2010 9:29 pm
HP Semi anyone?

Last post by twizi
Replies: 10
by Lockednloaded » Thu May 27, 2010 8:37 pm

First post

I was just browsing Ebay and i found a 3000 psi capable 3-way! A QEV should be able to handle that, so now all anyone needs is a 3000 psi capable...

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the cheapest high presure valve are burst disk and hydraulic ball valves to handle that type of presure or u will be paying alot of money for a vlave...

10 Replies

2860 Views

Last post by twizi
Fri May 28, 2010 7:43 pm
How to build a 2 inch barrel sealing piston valve?

Last post by clemsonguy1125
Replies: 7
by BeaverRat » Thu May 27, 2010 11:45 pm

First post

Hello,
my next build will be based around a 2 inch tee barrel sealing piston valve. I will be using a 2.5 inch chamber and a 1.5 inch barrel (about 5...

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Heres a tutorial, in the future you may want to check the how to section

7 Replies

2927 Views

Last post by clemsonguy1125
Fri May 28, 2010 2:41 pm
Piston Valve Design

Last post by penquin
Replies: 18
by penquin » Wed May 19, 2010 12:28 am
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Hey members of spudfiles! I am very new to these air cannons and was wondering if you could help me on my design of my piston. It is for a physics...

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The piston seems very sturdy and seems as if there is barely any air leak around it. When we drop the piston and gravity pulls it down you can feel...
18 Replies

7508 Views

Last post by penquin
Thu May 27, 2010 1:30 am
Proper valve: Small, handheld launcher

Last post by Col. Kurtz
Replies: 5
by Col. Kurtz » Tue May 25, 2010 5:22 pm

First post

I'm building a launcher that's meant to replicate the shape and style of an M79 Thumper grenade launcher, breakaway barrel and all. However, there...

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Yeah, I saw goat's, those were pretty cool. However, those have handles attached to the bottom, coming down, instead of just an in-stock trigger. I...

5 Replies

2347 Views

Last post by Col. Kurtz
Wed May 26, 2010 4:10 pm
Basic Pneumatic Cannon Queetions

Last post by BeaverRat
Replies: 15
by BeaverRat » Mon May 24, 2010 8:05 pm
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Ok - just to start it off, I did a search on these first... I am going to make a little transition to Pnuematics (they are quieter).

1. Does the C:B...

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Ok, strange thing going on. I pump up the valve and it holds, but I can hear a small amount of air flowing out of the tiny hole on the top of the...
15 Replies

7447 Views

Last post by BeaverRat
Wed May 26, 2010 8:42 am
High-Pressure Help/Questions

Last post by Tantum
Replies: 10
by Tantum » Mon May 24, 2010 8:35 pm

First post

I'm planning to build a high pressure (in the 300 to 400 PSI range) pneumatic that fires 1/4 steel shot sling shot weights. Sorry if this is the...

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Thanks a ton for the help, guys. This pretty much perfectly answers all my questions and concerns. If anything else pops up I'll post it here.

10 Replies

3365 Views

Last post by Tantum
Wed May 26, 2010 1:06 am
My Semi questions...

Last post by Lockednloaded
Replies: 15
by Lockednloaded » Sat May 22, 2010 7:05 pm
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I'm building a semi automatic pretty soon, not all the parts are in yet. I have ordered the QEV, the 3-way valve, and the air cylinder. I just need...

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yea, they are very expensive though. I will first build a normal QEV launcher to test the power. This will use all threaded fittings, so it will be...
15 Replies

5493 Views

Last post by Lockednloaded
Tue May 25, 2010 7:09 pm
Summer projects...

Last post by Col. Kurtz
Replies: 30
by Lockednloaded » Thu May 20, 2010 8:45 pm
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I'm done with school next monday, so i decided to start thinking about a summer project as a productive use of time. I have way too many plans...

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A light, air powered launcher built to look like an M79 Thumper launcher. Breakaway barrel, tire valve insert, haven't yet decided on the release...
30 Replies

12418 Views

Last post by Col. Kurtz
Tue May 25, 2010 7:07 pm
V.A.L Piston Valved Antenna-Golfball-Nerf Launcher (video)

Last post by Technician1002
Replies: 97
by MrCrowley » Sat May 31, 2008 10:56 pm
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V ersatile A ntenna L auncher

Specifications:
800mm long 50mm barrel
1200mm long 40mm golfball barrel
1000mm long 50mm chamber
25mm...

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I'm sure you'll agree that most people seem to have far too large of a chamber for such a short barrel. With a decent size pneumatic, it seems you...
97 Replies

47031 Views

Last post by Technician1002
Tue May 25, 2010 6:16 pm
my airgun

Last post by Brian the brain
Replies: 33
by soka » Sun May 16, 2010 11:54 am
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Hello guys, i am french and i am registered on patator forum, i wish to show you my last creation .

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The part used for the chamber is an ( automatic) air release valve to air out central heating systems in Europe.

It's what the store idiot came...
33 Replies

10942 Views

Last post by Brian the brain
Tue May 25, 2010 2:33 pm
Bolt Action Musket

Last post by Lockednloaded
Replies: 30
by Lockednloaded » Mon May 17, 2010 4:40 pm
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This is really more of a side build for me, but I think it looks nice nonetheless. It is a spare parts gun with the valve reconfigured from my old...

Last post

I have shot potatoes, tomatoes, nail darts, and much more, it has a pretty good range, but i can't test right now, i just layed down a tan base coat...
30 Replies

12183 Views

Last post by Lockednloaded
Mon May 24, 2010 8:47 pm
Sprinkler Valve Solenoids are AC?

Last post by Technician1002
Replies: 7
by BeaverRat » Sat May 22, 2010 5:29 pm

First post

I read on the solinoid that it is for AC 24 volts. How do you get this to work portable on DC voltage?
Thanks

Last post

Hubb's thread on sprinkler valve mods is a sticky. It is this thread,
In there is a link to the most excellent PDF file. The file is here;

This...

7 Replies

7231 Views

Last post by Technician1002
Mon May 24, 2010 7:06 pm
Self opening ball valve question?

Last post by Technician1002
Replies: 2
by boyntonstu » Sun May 23, 2010 7:49 pm

First post

When you begin to open a ball valve does the in rushing pressurized air help the BV to open further?

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Short answer, no. There are no significant forces on rotational parts to advance the opening. Ball valves are used in irrigation sprinkler systems....

2 Replies

937 Views

Last post by Technician1002
Sun May 23, 2010 7:58 pm
Plague: spring work has begun

Last post by c11man
Replies: 11
by c11man » Sat May 22, 2010 4:15 pm

First post

So i started working on Plague again since it is warm enough for pvc and have the valve section almost ready to glue onto the chamber.

most of the...

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yeah sch 80 is nice but i didnt pay a lot for mine. dura does not make a sch 40 wye, they just put white pvc into the sch 80 mold and sell it as sch...

11 Replies

2844 Views

Last post by c11man
Sun May 23, 2010 4:09 pm
cant seal cannon, its like a cheese with holes :(

Last post by Fizento
Replies: 10
by Fizento » Fri May 21, 2010 7:47 pm

First post

Hi guys!

Today i did this project with a friend of mine and we could get everything sealed at about 40psi (permanently pumping into the gun) there...

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ah ok thats what i thought about thx

10 Replies

4185 Views

Last post by Fizento
Sat May 22, 2010 5:21 pm
my semi auto concept

Last post by POLAND_SPUD
Replies: 9
by michaelgohjs » Fri May 21, 2010 3:23 am

First post

this is my first post and i learn about this site while researching on how to make a semi auto gun

the aim of this gun is to:
1)use a take of...

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I think my post explained it pretty well... IDK what you meant by stolen tech from slider gun and what it is... I presume it's some sort of a nerf...

9 Replies

3910 Views

Last post by POLAND_SPUD
Sat May 22, 2010 8:03 am
Reincarnation - 2" PVC piston valve

Last post by cannon monkey
Replies: 9
by Slauma » Sun Dec 20, 2009 1:13 pm

First post

Here's my second pneumatic, it's a 2 piston valve. This is basically a scaled down version of my first cannon that I could never get to work very...

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great idea.. but i was wondering if using a spring at the piston would solve this problem?

not really sure what to say cause this is on an old...

9 Replies

5014 Views

Last post by cannon monkey
Sat May 22, 2010 8:01 am
HP pump hose head?

Last post by Gun Freak
Replies: 1
by FighterAce » Fri May 21, 2010 8:39 am

First post

A few days ago I (almost) completed my 40+ bar pump but its still missing a pressure gauge and hose. The pressure gauge will be easy to get but my...

Last post

Well you could get one of those tire filling blowguns and thread it onto the end of the hose...

1 Replies

1098 Views

Last post by Gun Freak
Fri May 21, 2010 7:09 pm
Pop can hang time.

Last post by Ragnarok
Replies: 14
by Technician1002 » Mon May 17, 2010 11:08 pm

First post

I'm going to toss this out for discussion. Find the hang time in this video. You can hear the can land. The thud is not very loud due to the...

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My understanding is that there is no driving force to minimize drag if the shape has uniform density.
Hmm... that makes me think. Homogeneous...

14 Replies

4453 Views

Last post by Ragnarok
Thu May 20, 2010 7:38 pm

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