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

1201276 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...

Last post

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

604764 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

857657 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...

Last post

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

1020583 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

392532 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

100022 Views

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

Topics

Basically, will this QEV set up work?

Last post by ham_machine
Replies: 4
by ham_machine » Sun Sep 28, 2014 9:10 am

First post

quick exhaust diagram converted.jpg

qev1.JPG

This Quick Exhaust Valve in this diagram is a shop brought QEV. One of those ones from ebay.

I...

Last post

Technician1002

Thanks, well I might give this a go then.

Just thought of a possible problem though.. As we all know - if the pressure is greater...

4 Replies

4338 Views

Last post by ham_machine
Sun Sep 28, 2014 1:44 pm
How safe are fire extinguishers for storing pressure?

Last post by ham_machine
Replies: 10
by ham_machine » Sat Jan 18, 2014 12:30 pm

First post

I currently use a small foam fire extinguisher to store a maximum pressure of 240psi of air (on my potato launcher). I'm considering buying a better...

Last post

Since writing this post, I have done allot of research into the pressures that powder fire extinguishers and copper pipe can withstand. I will share...

10 Replies

7505 Views

Last post by ham_machine
Fri Sep 26, 2014 3:51 pm
Question on Boyle's law and how to use it for pumps/psi

Last post by Technician1002
Replies: 3
by lockmanslammin » Tue Sep 23, 2014 11:26 am

First post

Hello all,
It's been quite a while since I've been here, and I'm suprised to see how many of the names I remember. I have probably a bit of a pnoob...

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In Boyl's law the pressure is directly ralated to volume unless a gas condences.

For example if you have a pump 1/2 the volume of a chamber, at...

3 Replies

2067 Views

Last post by Technician1002
Wed Sep 24, 2014 11:12 am
QEV/Piston Valve Longevity

Last post by n05gr0th
Replies: 8
by n05gr0th » Tue Sep 16, 2014 8:09 am

First post

So I've been trawling through the Spudfiles archives, thoroughly researching my next pneumatic launcher, and have discovered that longevity can...

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Brilliant, in that case I have a few ideas in mind for sourcing the right lubricant. Thanks again.

8 Replies

3604 Views

Last post by n05gr0th
Thu Sep 18, 2014 8:43 am
Indirect solenoid valve speed

Last post by Ianbuckwell
Replies: 2
by Ianbuckwell » Wed Sep 17, 2014 6:03 am

First post

I have been advised by this forum that indirect solenoid valves are best used if its going to be the main valve, due to their far greater flow.

I am...

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Thanks for the help, I guess indirect solenoid valves are pretty similar to a QEV in operation with its diaphram and the solenoid acts as the...

2 Replies

1865 Views

Last post by Ianbuckwell
Wed Sep 17, 2014 6:57 pm
Electric solenoid valve as main air valve for airgun?

Last post by Technician1002
Replies: 8
by Ianbuckwell » Sun Jul 27, 2014 8:09 pm

First post

:roll: Has anyone tried something like this? Surely someone must have? Did you have any sucess?

If the figures are to be believed it flows...

Last post

The wide variation in opening times is mostly due to the material the valve handles in the spec. it lists air as well as water. This alone is the...

8 Replies

16750 Views

Last post by Technician1002
Wed Sep 17, 2014 3:42 pm
Timberwolf resurrection project

Last post by n05gr0th
Replies: 28
by Ragnarok » Sun Dec 08, 2013 4:37 pm
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In the interests of starting to cross some of my long list of unfinished projects off my to-do list, I'm starting to look back at the Timberwolf...

Last post

I know I'm a little late to the party here, but hopefully you haven't completely abandoned your project - it looks really promising. Have you...
28 Replies

11627 Views

Last post by n05gr0th
Wed Sep 17, 2014 9:51 am
What do you guys think of this?

Last post by Brad1895
Replies: 10
by Brad1895 » Thu Sep 11, 2014 8:01 pm

First post

So a while back I asked about a my bigger cannon plan. Since then I made something a bit overkill, but that's another can of worms. The idea I have...

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Probably a good idea. If we can keep the chamber volume down, I have no complaints.

10 Replies

6154 Views

Last post by Brad1895
Sun Sep 14, 2014 12:53 pm
AP Physics Project

Last post by jimmy101
Replies: 9
by Sabercat » Sun Aug 31, 2014 9:18 pm

First post

My mission is to build a launcher that will launch a tennis ball into a basket. The basket will be placed at 3 different distances of 3.0, 5.0, and...

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A smaller sprinkler valve might be better. Since your max range is pretty short, only about 30 feet, you really shouldn't need the much more...

9 Replies

9439 Views

Last post by jimmy101
Sun Sep 07, 2014 6:10 pm
300 psi pneumatic, a couple questions

Last post by wdr0
Replies: 26
by wdr0 » Wed Jul 30, 2014 1:06 am
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Hello, I am working on building a relatively powerful pneumatic. I am using all sch 80 PVC for construction
With a 2 barrel and 4 for the chamber. it...

Last post

So today I was able to do more testing. Fired two of the sabot rounds toward a log. The first impressively embedded itself all the way up to the fins...
26 Replies

17045 Views

Last post by wdr0
Sun Sep 07, 2014 2:06 pm
1" pneumatic marble gun

Last post by Catmac 83

by Catmac 83 » Mon Sep 01, 2014 8:05 pm

Hi, new guy saying hi from texas with a vid of my marble shooting spud gun.

I ran some marbles over the crony a few days ago,Heres some numbers....

0 Replies

6430 Views

Last post by Catmac 83
Mon Sep 01, 2014 8:05 pm
Parker P4Q-CA16 connections

Last post by Ianbuckwell
Replies: 14
by Ianbuckwell » Wed May 21, 2014 7:59 am

First post

Just received it in the mail today so really excited on startinga build, I am a new and am unable to just look at a QEV identify which port is...

Last post

I looked into the Palmer pursuit regulators but as I am in Uk they work out costly to import, but I have found a paintball regulator which will fit...

14 Replies

6832 Views

Last post by Ianbuckwell
Mon Sep 01, 2014 1:30 pm
Anybody use this 400 psi Sigma QEV?

Last post by n05gr0th
Replies: 4
by n05gr0th » Wed Aug 27, 2014 12:51 am

First post

I've been searching the web for a few days, looking for high performance QEVs rated for 350 psi or more with little luck. So far this was the only...

Last post

I don't really care about overkill. I just want to squeeze the most possible power out of a QEV valve at 350 psi and a 50 inch barrel (which I...

4 Replies

2709 Views

Last post by n05gr0th
Wed Aug 27, 2014 8:30 pm
50 caliber 350psi air musket

Last post by bravootome
Replies: 3
by n05gr0th » Wed Aug 20, 2014 7:04 pm

First post

Gun info:
Valve: Springloaded ball-valve
Barrel length: 28 inches / 0.7m
Chamber: 30 inches of 3/4 inch steel
Operating pressure: 350 psi
Loading...

Last post

3 years ago i've made something similar after seeing some youtube videos, just to see if it is really posible. And it was !

3 Replies

3784 Views

Last post by bravootome
Mon Aug 25, 2014 2:20 pm
AS-[WIP]-50

Last post by smirpab
Replies: 103
by smirpab » Mon Mar 05, 2012 4:59 pm
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Hi all,
Firstly grieve if my English is pathetic, I'm franaçais.

I just present my project pneumatic cannon.
It has the peculiarity of being...

Last post

It is connected to the reserve, so no particular problem ?
103 Replies

52692 Views

Last post by smirpab
Thu Aug 21, 2014 4:40 pm
Question about piston valve

Last post by Technician1002
Replies: 3
by rc dude » Fri Aug 15, 2014 3:13 pm

First post

Hello,
I am in the process of making a piston valve in a three inch tee. I have everything I need, except the 3 PVC I have for the part circled in...

Last post

Some sort of proper padding in the impact zone is required to prevent failure. My Mouse Musket broke pistons on a very regular basis. They even would...

3 Replies

2076 Views

Last post by Technician1002
Mon Aug 18, 2014 10:56 pm
Commercial T-shirt Gun

Last post by Gun Freak
Replies: 17
by jackssmirkingrevenge » Thu Aug 14, 2014 8:26 am
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I got to play with one of these the other week:

launcher.jpg

It's a basic co-axial pneumatic but fairly well made and can take up to 300 psi -...

Last post

Most facts on internet forums are wrong, including this one.

I think the facts on this forum tend to be a little more trustworthy than elsewhere on...
17 Replies

22547 Views

Last post by Gun Freak
Mon Aug 18, 2014 6:25 pm
2" Pnuematic Cannon Build

Last post by Technician1002
Replies: 18
by OvaR8ed » Sat Jul 26, 2014 7:01 am
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This project is long overdue, but better late than never. This is my first potato gun so I'm going to need lots of input from you guys.

I need to...

Last post

When launching a large Gatoraid with the breech planted on my hip, I forgot I had keys in my pocket. That left a mark.
18 Replies

11383 Views

Last post by Technician1002
Thu Aug 14, 2014 12:10 pm
Recycling pilot volume

Last post by jackssmirkingrevenge
Replies: 9
by DrKavorkien » Wed Aug 06, 2014 10:50 pm

First post

So, I have a question and would like to know if anyone has had any experience with the subject. So I have a pilot actuated (sprinkler) piston valve,...

Last post

Another one is the sacrificial QDV style valve that Tech made popular - instead of having the balanced spool as the valve move backwards, have it...

9 Replies

7514 Views

Last post by jackssmirkingrevenge
Thu Aug 14, 2014 10:58 am
Discharging an old oxy cylinder

Last post by Gun Freak
Replies: 8
by Gun Freak » Sun Aug 10, 2014 11:25 pm

First post

A while back I acquired a ~1 liter oxygen tank originally stamped with the year 1960 IIRC. It came with a gauge and regulator, and when I cracked the...

Last post

Thanks Tech! Lots of useful info there, I appreciate it. I'll take all of that into consideration when I empty it.

8 Replies

6497 Views

Last post by Gun Freak
Wed Aug 13, 2014 2:01 pm
Golf ball cannon

Last post by Juggernaut12121
Replies: 5
by Juggernaut12121 » Thu Jul 03, 2014 7:31 am

First post

First off I have to say that this was probably my largest cannon, and my first piston gun. That being said I needed some help with design and got a...

Last post

I've tested this a few times inside and at low pressures it sounds like a complete cannon, but I'm never able to do it outside since it's too loud...

5 Replies

4763 Views

Last post by Juggernaut12121
Thu Aug 07, 2014 12:32 pm
QEV size/barrel diameter relationship

Last post by jackssmirkingrevenge
Replies: 3
by Ianbuckwell » Wed Jul 30, 2014 12:06 pm

First post

Hi, For my gun I am using a 12mm (just under 0.5 ) inside diameter along with a Parker 3/4 QEV. I have no complaints about the performance ( it is...

Last post

Bigger is always better if power is what you're after - as always, GGDT is a good way to have an idea of how a flow restriction will affect...

3 Replies

4039 Views

Last post by jackssmirkingrevenge
Wed Aug 06, 2014 9:23 am
Trouble with Nerf Vortex Aero Howlers

Last post by Dave92870
Replies: 5
by Dave92870 » Tue Aug 05, 2014 10:23 pm

First post

This is my first post to Spudfiles. First here are the details of my air cannon:

This is a pnematic air cannon.
The valve is a Supah...

Last post

Try other ammo anyway just to see, a few different things. That will tell you if it's the ammo or cannon.

I will give it a shot, thanks.

5 Replies

4603 Views

Last post by Dave92870
Wed Aug 06, 2014 9:02 am
MythBuster with Eclipse launcher video.

Last post by jrrdw
Replies: 14
by Solar » Fri Apr 18, 2014 10:43 pm

14 Replies

10350 Views

Last post by jrrdw
Sat Aug 02, 2014 6:10 am
[HELP] with DIY air cannon

Last post by Technician Fry
Replies: 2
by 3danman » Thu Jul 31, 2014 7:31 pm

First post

Hello all,

I'm new to the site, and I was looking to make an air cannon similar to the potato ones shown on this forum.

A while back I got into...

Last post

The idea I had was to create an air reservoir filled with air via a bicycle pump. The reservoir might lead to a valve of some sort, and on the other...

2 Replies

3052 Views

Last post by Technician Fry
Fri Aug 01, 2014 11:40 pm

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