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

1666325 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

754116 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

981897 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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First post

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

1164996 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

466130 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

131431 Views

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

Topics

Snapvalve explained

Last post by Brian the brain
Replies: 13
by Brian the brain » Sat Oct 27, 2012 5:48 am

First post

At the request of wyz I decided to repost the inner workings of the Snapvalve.

The design is based on the regular pop-off valve but optimised for...

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BTB did you do anything special to keep the piston airtight inside the housing? If you didn't, won't the air leak out around the piston once the air...

13 Replies

66952 Views

Last post by Brian the brain
Sun Oct 28, 2012 12:35 pm
Expansion Tanks as a Pressure Vessel?

Last post by ramses
Replies: 6
by jsefcik » Fri Oct 26, 2012 8:40 pm

First post

at work everytime i go into the maintainence closet i keep looking at these water expansion tanks and say to myself that would make one hell of an...

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3) If someone throws out an expansion tank...it likely has a hole in it from corrosion...do you REALLY want a pressure vessel that's corroded thin? ....

6 Replies

3280 Views

Last post by ramses
Sun Oct 28, 2012 12:28 pm
6mm First Attempt.

Last post by archie370
Replies: 8
by Someone89 » Wed Oct 24, 2012 7:12 pm

First post

Hey all, so I happened across this site while trying to find out how the CO2 cannons on RC naval combat ships work and got a bit hooked.

Hefty dose...

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Haha Yeah most of the stuff on here doesn't come from a kit :) .... With the metal bb... do you reakon it will have the same effect as a bb which is...

8 Replies

4852 Views

Last post by archie370
Fri Oct 26, 2012 4:21 pm
Useful Information on Misc and Etc

Last post by jackssmirkingrevenge
Replies: 4
by captdavid » Fri Oct 26, 2012 10:10 am

First post

While lurking around for a suitably dumb fall project, I noticed a considerable number of questions on these forums directed toward Is this safe?...

Last post

But highlighting the string and clicking the URL button will.

Last edited by captdavid on 10/26/2012 9:23 AM; edited 1 time in total

Works now :)

4 Replies

2602 Views

Last post by jackssmirkingrevenge
Fri Oct 26, 2012 11:17 am
Trigger mechanism for a hammer valve?

Last post by Alex345
Replies: 6
by Alex345 » Wed Oct 24, 2012 4:06 pm

First post

I've taken the handles off the pilot valve from my previous cannon to turn it into a hammer valve and connected it directly to the 3/4 QEV. But now i...

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Is that a fire extinguisher piece on that end ... Hahaha

.... Btw what r u asking us it looks like you have answered your own question. My original...

6 Replies

8588 Views

Last post by Alex345
Thu Oct 25, 2012 6:28 pm
QEV Question

Last post by mikehunt042084
Replies: 9
by mikehunt042084 » Thu Oct 25, 2012 10:40 am

First post

I'm working on a QEV launcher and I have everything but the flippin valve. I have found thousands of different ones online but almost none of them...

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Awesome thanks for clearing that up for me, I wanted to make sure how it worked (I've never used a QEV before) before I bought it on the off chance...

9 Replies

2956 Views

Last post by mikehunt042084
Thu Oct 25, 2012 6:19 pm
my new hammer valve

Last post by warhead052
Replies: 15
by dahakka » Tue Jun 26, 2012 1:31 am
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i still can't make a metal hammer ,but it is hight quality polyme

:lol: :lol: :lol:

and no more epoxy

:P

any...

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Agreed with above, all pictures except for two are gone.

Nice job on the hammer though, that's about the only one I can see. Looks good!
15 Replies

11024 Views

Last post by warhead052
Wed Oct 24, 2012 7:51 pm
Pop-off valve build

Last post by jackssmirkingrevenge
Replies: 2
by PotatoEnemy17 » Fri Aug 17, 2012 4:57 pm

First post

I started building a large 1'' pop off valve a couple days ago. I'll probably use it to make a full auto(QEV + pop-off) gun. The input is 1/2'' PVC....

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Hadn't seen this, looking good! Consider using an air spring if a coil spring doesn't have the cojones .

2 Replies

2257 Views

Last post by jackssmirkingrevenge
Tue Oct 23, 2012 8:13 am
Wax Slug shot from Air cannon

Last post by archie370
Replies: 6
by Spud Destruction » Sun Aug 19, 2012 1:06 pm

First post

Hey guys i joined up with Taofledermaus which a lot of you know from his youtube page. He brought with him a wax slug big enough to fit a 2 air...

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Hey buddy you need to upload a video :) mate of the actual slug :)

6 Replies

4170 Views

Last post by archie370
Tue Oct 23, 2012 7:01 am
pilot valve for 300 psi?

Last post by jackssmirkingrevenge
Replies: 5
by GustavssonB » Sun Oct 21, 2012 1:08 pm

First post

Were can I find a small pilot valve that I can use to trigger my QEV.
I want it to be able to work at 300 psi (20bars) pressure.

The current valve...

Last post

in Sweden i can only find blow Guns that is pressure rated to 10 bar:/

they usually work to 30 bars though ;)

5 Replies

2394 Views

Last post by jackssmirkingrevenge
Mon Oct 22, 2012 9:47 am
My gun needs to be lighter Need material info

Last post by archie370
Replies: 42
by archie370 » Mon Oct 15, 2012 7:30 am
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Hey guys ive made my functional part of my gun now i need to make it lighter ... any suggestions

i have copper tube for barrel, im thinking...

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Well Thank you guys for all the help and the input with my shitty design ... but hopefully i will have it up and running in no time :) ...
42 Replies

16358 Views

Last post by archie370
Sun Oct 21, 2012 3:13 am
Several 3/4" High End European Style QEV's [For Sale]

Last post by BeaverRat
Replies: 13
by BeaverRat » Tue Oct 16, 2012 3:38 pm

First post

Hello,
I took a break from cannons for a couple years, but I'm about to start up again! I happen to have a ton of these QEV's sitting around, and...

Last post

Cheers, I figured that having access to a machine shop is worth celebrating with a new gun... eventually.

Beaver rat, If my design ends up at my...

13 Replies

8073 Views

Last post by BeaverRat
Fri Oct 19, 2012 12:48 am
How to make a QEV?

Last post by jackssmirkingrevenge
Replies: 3
by DragonAllianace » Tue Oct 16, 2012 6:20 pm

First post

Hi guys

So since where i live its basically impossible to buy a QEV (Or atleast find someone who sells them) i think i will need to make one or find...

Last post

They ship to Peru, I don't get why you can't buy one. Too young to have a credit card and parents don't want to fund your projectile launching...

3 Replies

3834 Views

Last post by jackssmirkingrevenge
Tue Oct 16, 2012 11:14 pm
First Bolt action airgun

Last post by DragonAllianace
Replies: 10
by DragonAllianace » Sun Oct 14, 2012 8:50 pm

First post

Hi guys, Im new here and i have a some questions about my design; Sorry if my english sucks(not main language)

Well so im going to use a Co2 12g as...

Last post

Thanks for the replies
Im cant get them where i live(Peru) If i get them it must be here otherwise the price isnt worth it
And as i said its my first...

10 Replies

5389 Views

Last post by DragonAllianace
Tue Oct 16, 2012 5:23 pm
Quick exhaust valve from Humphrey, what's the problem?

Last post by ozzioutlaw
Replies: 16
by Leonard » Tue Jul 08, 2008 1:07 pm
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Hello!
I just recently ordered a SQE1 super quick exhaust valve from Humphrey.

For a strange reason i realy though they would work just like...

Last post

hey guys. i was thinking of buying one of these Humphrey qevs for my next project its only a 1/4 will i have any problem with blockage at...
16 Replies

12310 Views

Last post by ozzioutlaw
Tue Oct 16, 2012 8:47 am
Lemon Aide 2000ft Lemon Cannon: Pictures Added

Last post by Technician1002
Replies: 10
by 2hands » Sun Oct 14, 2012 2:34 am

First post

Hello everyone- I have been viewing potato cannons for quite some time now and have just joined this forum as I have something to share. I've been...

Last post

Nice build.

On your next one, make the flow path shorter and larger between the chambers and barrel. Try to completely vent the chamber into the...

10 Replies

8124 Views

Last post by Technician1002
Mon Oct 15, 2012 6:27 pm
air cannon props for marching band

Last post by n2wzb
Replies: 7
by n2wzb » Sun Sep 30, 2012 7:36 pm

First post

I built these 2 air cannons as props for the high school marching band that 2 of my kids play in. The concept of the show this year is medieval...

Last post

Thanks for all the comments, and I happen to be an engineer, so maybe that's why I don't ask many questions?

By the way, the launchers were used...

7 Replies

4640 Views

Last post by n2wzb
Sun Oct 14, 2012 2:42 pm
Semi Auto Ball Bearing/Battery Gun

Last post by archie370

by archie370 » Sun Oct 14, 2012 6:00 am

This is my first upload of an actual working pneumatic Gun

1/4 Copper Barrel 500mm

1/2 T for Qev

Blow Gun with epoxy fitting on the end (Pilot...

0 Replies

5689 Views

Last post by archie370
Sun Oct 14, 2012 6:00 am
does this piston look right.

Last post by 8tonsemi
Replies: 46
by 8tonsemi » Wed May 16, 2012 1:24 pm
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Its based off of techwizzy's A.K.A Gun freaks.

This is the design I'm going to use. It is 2x.1 1/4 inch pvc end caps. 1x. 5 1/6 inch threaded rod....

Last post

Just so you know and for the record I wasnt trying to discourage you in any way in any of my threads......... :roll:
????? I was talking to Grim.
46 Replies

13040 Views

Last post by 8tonsemi
Fri Oct 12, 2012 7:46 pm
Sprinkler valve flow increase ideas

Last post by CS
Replies: 3
by rna_duelers » Wed Oct 10, 2012 2:31 am

First post

Recently having looked into the field of cylinder head modifications it has crossed my mind to apply some techniques that are used in engines and use...

Last post

Good analysis, but why is a sprinker valve your starting point? A lot of DIY valves have performance in high regard, a sprinkler valve seems to have...

3 Replies

1730 Views

Last post by CS
Wed Oct 10, 2012 4:38 pm
Is this even a regulator?

Last post by Alex345
Replies: 6
by Alex345 » Tue Oct 09, 2012 3:26 pm

First post

So i bought this thing at a specialized store, its supposed to act as a secondary regulator for a mini CO² rig.

But here's the ting, it wont...

Last post

I already have a CO² kit, the regulator was to act as a secondary one for finer adjustment :)

Its this one:

The coil hose was removed for a...

6 Replies

3759 Views

Last post by Alex345
Wed Oct 10, 2012 3:32 am
Hello everyone

Last post by *###*
Replies: 14
by *###* » Sat Oct 06, 2012 11:55 pm

First post

Alright so i decided to post my cannon to get every off my back for being a noob. i just want to say i most defiantly am not a noob i have been an...

Last post

I was looking at the qualifier the mouse musket. *Facepalmheadesk

14 Replies

5124 Views

Last post by *###*
Sun Oct 07, 2012 1:02 pm
1 inch valve air-gun

Last post by Technician1002
Replies: 3
by AircannonSweden » Fri Oct 05, 2012 5:24 pm

First post

I did get an idea yesterday and i will work on a 1 inch gun but that was easier said than done... I started about 5 hours ago and i will make a hole...

Last post

I measure mine by the size of the valve. A two inch opening between the chamber and barrel is a 2 inch cannon. My ABS cannon has a 2 inch valve and 2...

3 Replies

2016 Views

Last post by Technician1002
Sat Oct 06, 2012 4:46 pm
300 psi fridge compressor

Last post by ozzioutlaw

by ozzioutlaw » Sat Oct 06, 2012 2:48 am

Ok here it is in early form my pressure gage only goes up to 300 psi

0 Replies

5971 Views

Last post by ozzioutlaw
Sat Oct 06, 2012 2:48 am
My TB launcher.

Last post by 8tonsemi
Replies: 14
by 8tonsemi » Mon Oct 01, 2012 3:03 pm

First post

This i just a 1 1/2inch modified sprinkler valve with a 2 1/2inch sdr-21 barrel. I got both from Mattyzip77. So big thanks to Matty for the valve and...

Last post

VIdeo is here.

14 Replies

5379 Views

Last post by 8tonsemi
Fri Oct 05, 2012 6:40 pm

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