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

906086 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

441743 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

389238 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

618721 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

328838 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

78598 Views

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

Topics

Anyone understand pneumatic valve symbols?

Last post by AlfiePB IanB
Replies: 5
by AlfiePB IanB » Mon May 16, 2016 1:15 am

First post

If so please could you tell me if this is a normally open valve? A member previously supplied me with this diagram, but the diagram on the valve...

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No I haven't bought one, just saw it on ebay and its a good brand and cheap, thanks for everyone's advice
I am tempted to get a clippard just worried...

5 Replies

3565 Views

Last post by AlfiePB IanB
Mon May 16, 2016 9:56 pm
The S400 ~ By Chaos

Last post by mark.f
Replies: 131
by chaos » Mon Apr 23, 2007 8:02 am
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The S400 ~ By Chaos

Category: Pneumatic

Stats:

- Material: 316L grade stainless steel.
- Valve: Custom Barrel Sealing piston
-...

Last post

A suh dude.
131 Replies

73914 Views

Last post by mark.f
Sun May 08, 2016 2:01 am
Dart Bolt Action Repaeater

Last post by chaos
Replies: 1
by tigerblues28 » Wed Mar 02, 2016 1:02 pm

First post

Just quit my old dish washing job and was hired yesterday.....

....as a TIG welder. I have found my path :D

So I figured now I have funds for a...

Last post

Keep at the old school tooling brah, no need for fancy shiat

1 Replies

2348 Views

Last post by chaos
Sat May 07, 2016 11:12 am
ebay QEV thread size

Last post by jackssmirkingrevenge
Replies: 7
by DasAbonnent » Fri Feb 12, 2016 2:45 pm

First post

Do the cheap chinese QEVs from Ebay have a standard plumbing thread(1/2'')?
I am fed up from making my QEVs and having to spend a week to get them...

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Unless stated otherwise it's safe to assume they are BSP threads on eBay stuff

7 Replies

5983 Views

Last post by jackssmirkingrevenge
Sun May 01, 2016 7:48 am
Valve?

Last post by Trauts
Replies: 1
by naifb » Sat Apr 23, 2016 4:27 am

First post

Hey guys,

I've been wondering, for a very simple and basic pneumatic cannon, would it make a difference of whether I use a sprinkler valve or a...

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I'm assuming by normal valve you mean a ball valve? A sprinkler valve will have a faster opening time than a manually actuated ball valve thus...

1 Replies

1371 Views

Last post by Trauts
Sun Apr 24, 2016 12:16 pm
hammer valves versus...

Last post by Brian the brain
Replies: 6
by Anatine Duo » Mon Mar 28, 2016 3:19 pm

First post

So I just finished playing with my quick and dirty Po' Boy Sixty-Fo' with a commercially available qev and got to thinking...

What is the advantage...

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I keep seeing high power hammer valves in factory pneumatics so I am trying to clarify why we build a hammer valve to pilot a qev, other than it...

6 Replies

5610 Views

Last post by Brian the brain
Tue Apr 19, 2016 1:04 pm
SA/FA Pnushnikov/Caselman-build log.

Last post by Brian the brain
Replies: 76
by Brian the brain » Wed Dec 18, 2013 4:34 pm
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Well...I've restarted the quest for an assault-rifle type launcher.

So far I have a precision 10mm hydraulic tube for a barrel, 10mm BP roundballs...

Last post

Weak is relative.
It's easy to cock but the spring is strong enough to load the ammo.

What I meant was, because of the balanced valve I don't need a...
76 Replies

47518 Views

Last post by Brian the brain
Tue Apr 19, 2016 12:57 pm
Getting my QEV to operate

Last post by Trauts
Replies: 3
by qevwontwork » Thu Apr 14, 2016 12:07 am

First post

Hello. i recently purchased a QEV and it is proving difficult to get it working! iv'e put a spring behind the plunger, attatched an air tank which i...

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If you were using the qev as intended (filling and pilotting with the P port) this issue wouldn't arise because the qev is designed to operate that...

3 Replies

1965 Views

Last post by Trauts
Fri Apr 15, 2016 10:44 am
Piston Gun That Shoots Multiple Times

Last post by Hammond Grey
Replies: 8
by cowscankill » Wed Dec 23, 2015 12:10 am

First post

This has probably been done before, but I never actually looked for this design/idea and it just randomly hit me one night. It just makes sooo much...

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I'm new to spudfiles and airguns generally. I would appreaciate it if you could give us a tutorial, especially on the piston valve and breech. Thanks...

8 Replies

6417 Views

Last post by Hammond Grey
Tue Apr 05, 2016 9:09 am
Regarding theoretical maximum velocity with air...

Last post by jackssmirkingrevenge
Replies: 1
by Gippeto » Sun Mar 27, 2016 1:31 pm

First post

Not into it, but some here might be.

Last post

Fantastic link, cheers!

Also I'm really happy to see a high-spec application of the valveless inanity I had mentally played with all those years...

1 Replies

1412 Views

Last post by jackssmirkingrevenge
Sun Mar 27, 2016 8:39 pm
Solenoid Problems

Last post by matti
Replies: 11
by BramR » Fri Mar 18, 2016 10:46 am

First post

Hi guys! :albino:

After using a spring return 3-way-2-position valve for a while to pilot my QEV, I decided to order a solenoid valve. It came in...

Last post

That should work OK ! :D It's very cheap valve so not sure what the quality of those are. I have used some Herion 4/2 valves that are over 10 years...

11 Replies

6996 Views

Last post by matti
Sun Mar 27, 2016 12:28 pm
schrader valve install

Last post by jackssmirkingrevenge
Replies: 10
by NoHands » Fri Mar 04, 2016 4:43 am

First post

12380464_10206905213502635_792875824_n.jpg Gday guys
I'm looking to make a bait castor cause i'm a quadriplegic and I need carers to cast for me, I...

Last post

Awesome project!

If you intend to use relatively low pressures (say 50 psi) you can install it the same way it's installed in an automotive tire....

10 Replies

6891 Views

Last post by jackssmirkingrevenge
Tue Mar 22, 2016 8:10 am
airforce condor hammer valve

Last post by mrfoo
Replies: 12
by Demon » Sat Nov 07, 2009 8:55 am

First post

Hello,

I am on the drawing board to make a airforce condor exact replica, especially in the firing mechanism.

My plans, that i did and work, are...

Last post

Literally 2 clicks away from this page, via the link 2 posts before...

12 Replies

18724 Views

Last post by mrfoo
Sat Mar 19, 2016 4:26 pm
.50? caliber cannon with reload mech on side

Last post by tigerblues28
Replies: 1
by AlfiePB IanB » Fri Mar 18, 2016 1:47 am

First post

I have searched but have been Unable to find. The topic features a rifle style rather Than pistol and the magazine reloading mechanism is at 90...

Last post

Here ya go buddy.

Nick

1 Replies

1826 Views

Last post by tigerblues28
Sat Mar 19, 2016 10:45 am
https://www.youtube.com/watch?v=q508d3k9518

Last post by CleCollins

by CleCollins » Mon Mar 14, 2016 3:53 pm

I recently joined so bear with me here. I watched this fellow make this cannon for potatoes and I am using it as a confetti cannon. The info was weak...

0 Replies

6108 Views

Last post by CleCollins
Mon Mar 14, 2016 3:53 pm
Qev Gun Design Help!!

Last post by Ansen
Replies: 2
by Ansen » Thu Mar 10, 2016 2:40 pm

First post

ghjg.png
hi everyone, i need some help improving my air rifle im not a pro at this,
i prefer to seek help before making a mistake
some specs:
shoots...

Last post

Thank you for your reply matti :D
on second search i got an 8mm OD x 2mm Wall 900mm Long but will the technique on this video work?

i have to...

2 Replies

2345 Views

Last post by Ansen
Fri Mar 11, 2016 2:55 pm
I really should know this - QEV ports

Last post by AlfiePB IanB
Replies: 2
by AlfiePB IanB » Sat Mar 05, 2016 8:41 am

First post

Hi, I have a Humphrey QE5 QEV, please can some one verify which port goes where, I pretty sure my chamber goes on the out, its just the 'in' and...

Last post

Thanks for info, just wanted to get it correct as going to use thread sealant instead of PTFE tape to look tidier. Thanks.

2 Replies

1878 Views

Last post by AlfiePB IanB
Sat Mar 05, 2016 1:10 pm
Sliding o-ring seal question

Last post by Demon
Replies: 7
by Demon » Sun Feb 21, 2016 12:46 am

First post

Hi, it's been quite a while that I've come here. Most likely nobody remembers me,

I'm in the process of patenting a compact paintball pistol design...

Last post

Indeed, the diagram isn't very clear as I only wanted to illustrate sliding o-ring seals.

The O-rings only ever come out of their seal inside the...

7 Replies

5389 Views

Last post by Demon
Thu Feb 25, 2016 10:32 am
Squash ball help

Last post by rg123
Replies: 4
by rg123 » Fri Feb 19, 2016 2:34 am

First post

Hi all, I am doing a project at uni which requires construction of a 'gun' to shoot a squash ball projectile up into the air with the goal of it...

Last post

basic design at the moment is pressure vessel constructed from pvc pipe (capped each end, bike valve in) then connected to solenoid which is mounted...

4 Replies

1777 Views

Last post by rg123
Sun Feb 21, 2016 11:00 am
Coaxial Piston Valve Question(SOLVED)

Last post by wereboar

by wereboar » Sat Feb 20, 2016 1:05 pm

Hi, I'm new to spudfiles and spud guns in general. After building a successful ball valve airgun I have decided to try to build a coaxial piston...

0 Replies

6035 Views

Last post by wereboar
Sat Feb 20, 2016 1:05 pm
Arrow shooting sniper airgun (work in progress)

Last post by JoergS
Replies: 10
by JoergS » Sun Jan 31, 2016 5:36 pm

First post

Since the Coke bottle arrow launchers work so well, I decided to improve on the concept.

Next project is a full blown sniper rifle. Air tank is a 1...

Last post

Yes, the verminator was my inspiration. I actually visited the FXAirguns company in Sweden last year, and we shot the heck out of those arrow...

10 Replies

6932 Views

Last post by JoergS
Fri Feb 19, 2016 6:52 am
First test shots!

Last post by Alex345
Replies: 2
by Alex345 » Wed Feb 10, 2016 12:41 pm

First post

Ok so i tried making this post 3 times in a row, accidentally closing this page and losing all i wrote twice... Third attempt, i don't feel like...

Last post

The valve has always been a bit of a mystery... I found it in a junk store and basically paid for the weight of the brass. It has no brand or...

2 Replies

2218 Views

Last post by Alex345
Thu Feb 18, 2016 12:25 pm
full size football

Last post by ToasT
Replies: 6
by sysTom » Wed Sep 16, 2015 5:21 pm

First post

Hello,

Has anyone ever constructed a cannon for a full size football? If so what materials did you use and where did you get them?

The largest...

Last post

There is a combustion cannon firing a soccer ball on YouTube

skip to 2:30

6 Replies

4199 Views

Last post by ToasT
Thu Feb 18, 2016 3:24 am
QEV modding and pilot/tank filling

Last post by AlfiePB IanB

by AlfiePB IanB » Wed Feb 17, 2016 2:25 pm

I got myself a couple of new QEVs (Humphries QE2 and QE4 iirc) due to reading positive comments. I am just going to set them up with a slide valve...

0 Replies

5669 Views

Last post by AlfiePB IanB
Wed Feb 17, 2016 2:25 pm
Anyone tried to replicate the Tippmann a5 gas mechanism?

Last post by iknowmy3tables
Replies: 2
by tiggles123 » Wed Nov 25, 2015 8:06 pm

First post

The main part I'm interested in is the tombstone and the valve that the gas enters into after exiting the tombstone - is that valve the same as a QEV...

Last post

the closest I can remember is this but that's 2 valves instead of one

2 Replies

2246 Views

Last post by iknowmy3tables
Fri Feb 12, 2016 6:54 pm

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Pneumatic Cannons

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