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

1125248 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

552392 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

821306 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

967195 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

374962 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

92425 Views

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

Topics

SolidWorks Simulation, Valve Flow

Last post by Moonbogg
Replies: 5
by velocity3x » Thu Mar 11, 2010 9:03 pm

First post

I posted this simulation from youtube because I thought it might be of some help when building a piston valve and deciding whether to construction a...

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For the price of a full retail version of solidworks, you could build 50 cannons.

5 Replies

5078 Views

Last post by Moonbogg
Fri Mar 12, 2010 12:56 pm
Heard the 'crack'

Last post by inonickname
Replies: 3
by boyntonstu » Thu Mar 11, 2010 11:33 pm

First post

At 550 psi shooting a 10 gauge 44 gr plastic wad the Prochrono measured 1146 fps.

I heard a cracking sound that I never heard prior to that shot.

I...

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I heard a similar crack when I fired a very thin nylon projectile from my 400 psi co-ax. The walls were less than a mm thick and the projectile was...

3 Replies

1067 Views

Last post by inonickname
Fri Mar 12, 2010 3:25 am
coaxial bb gun on youtube

Last post by jackssmirkingrevenge
Replies: 18
by lemming124 » Wed Mar 03, 2010 6:33 am
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Hey everyone,
I've been a member of Spudfiles for a while now, but this is my first post. I was looking at co-axials on Youtube when I came across...

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lol my posts are getting very predictable... sorry I couldn't resist to post it

Yup, it's a bit like me and epoxy... you can bleat about it all you...
18 Replies

5325 Views

Last post by jackssmirkingrevenge
Fri Mar 12, 2010 12:21 am
Cam lock serviceable piston valve

Last post by c11man
Replies: 3
by Slauma » Thu Mar 11, 2010 2:15 pm

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I'm trying to figure out if I could use camlock fittings on a tee piston valve to make the valve serviceable. I'm not very familiar with camlock...

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did you use teflon tape each time?

3 Replies

1421 Views

Last post by c11man
Thu Mar 11, 2010 9:22 pm
light diy airtanks

Last post by jackssmirkingrevenge
Replies: 4
by iknowmy3tables » Wed Mar 10, 2010 5:30 pm

First post

this web page I found is pretty interesting, it's about compressed air powered air craft, it has great information on DIY hydro testing including the...

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I remember seeing an article about steam powered model aircraft in my aeromodelling days, the poor man's effort came to grief when it tipped over in...

4 Replies

3071 Views

Last post by jackssmirkingrevenge
Thu Mar 11, 2010 1:31 am
QEV semi auto option?

Last post by iknowmy3tables
Replies: 37
by Crna Legija » Sat Mar 06, 2010 6:49 am
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i just order one of these qevs and want to make a semi/full auto marble gun

i wanted to know wich set up would give me semi/full auto.
i have...

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wtf is the vent chamber? just look at the diagram,

and I'm pretty sure if you upload your video to youtube, (owned by an American based company) you...
37 Replies

23976 Views

Last post by iknowmy3tables
Wed Mar 10, 2010 5:46 pm
Piston actuation

Last post by Gun Freak
Replies: 15
by Gun Freak » Sun Mar 07, 2010 11:41 am
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Should a blowgun be a sufficient pilot for this design or should I go with a QEV?

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Yeah I dropped this idea a whie ago, my next cannon will be a simple metal Tee piston.
15 Replies

4660 Views

Last post by Gun Freak
Wed Mar 10, 2010 4:29 pm
Rat Trap torsion spring idea to trigger ball valve.

Last post by boyntonstu
Replies: 12
by boyntonstu » Thu Mar 04, 2010 4:28 pm

First post

We want to open a ball valve as fast as possible for a main or for a pilot.

The action is rotation and somewhere between 45* for a pilot an 90* for...

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I have decided that a torsion spring is too slow.

OTOH I have been shooting quite a lot lately, and since I have repeated the speeds, I am confident...

12 Replies

6190 Views

Last post by boyntonstu
Wed Mar 10, 2010 11:00 am
pilot vent to close a blow forward bolt

Last post by psycix
Replies: 7
by iknowmy3tables » Tue Mar 09, 2010 7:06 am

First post

so polandspud showed me this animation in another thread awhile back

read carefully what I'm suggesting isn't the same as this animation
so in...

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I like this system. But it indeed has some possible issues.
I'd drill a vent hole in the side so that the blue part can move forward without...

7 Replies

4390 Views

Last post by psycix
Wed Mar 10, 2010 7:38 am
Air Con Compressor

Last post by zomgwtfbbq
Replies: 8
by zomgwtfbbq » Wed Mar 03, 2010 9:49 am

First post

Good day,

I took the compressor from my old air con but I have a few questions about the compressor; I have uploaded a few photos so that you may...

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cool.. Have you considered putting all the cables and the capacitor inside some sort of a box (project box, junction box, whatever you call it)...

8 Replies

2665 Views

Last post by zomgwtfbbq
Tue Mar 09, 2010 3:17 am
High pressure steel piston valved rifle in progress.

Last post by jhalek90
Replies: 46
by jhalek90 » Fri Nov 20, 2009 8:08 pm
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Here it is. my new baby.

This is a high pressure gun that i am building/using to test my new fridge compressor. Does any one know what kind of...

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piston is made from a high strength plastic rod stock, used to machine parts for light weight, but very impact resistant parts.
EDIT:

It runs about...
46 Replies

21009 Views

Last post by jhalek90
Mon Mar 08, 2010 8:03 pm
Grib's New Pnuematic & Ammo

Last post by BigGrib
Replies: 3
by BigGrib » Sun Mar 07, 2010 9:05 pm

First post

Hey Guys, It's been a while since I've built a cannon mainly for the lack of decent ammo. I came across something that I thought I could use and...

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I would love to do something with a semi-auto, it would just be a matter of building the parts to make the mag and all that.

3 Replies

2085 Views

Last post by BigGrib
Sun Mar 07, 2010 11:49 pm
Simplest QEV from Home Depot

Last post by spudkpi
Replies: 21
by spudkpi » Fri Mar 05, 2010 8:38 pm
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Okay I just received an aluminum cased 1/4 QEV off ebay and I realized how simple it is. I have tried in the past and failed. I have done many...

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dead thread. Ill show you the cannon when i'm done.
21 Replies

10344 Views

Last post by spudkpi
Sun Mar 07, 2010 11:34 pm
SGTC Supah Valve

Last post by jrrdw
Replies: 4
by Gawnewild » Sun Mar 07, 2010 5:49 pm

First post

I'm new to air cannons and any help would be appreciated. Where can I find a SGTC Supah Valve in 2 or larger. I seen many variations of a complete...

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Thanks a lot Big Grib! The more I look at these cannons, I can see this could be addicting! I have found that complete valve in a T form. However my...

4 Replies

3636 Views

Last post by jrrdw
Sun Mar 07, 2010 7:52 pm
Pneumatic dart rifle by Reedfe

Last post by reedfe
Replies: 10
by reedfe » Sat Mar 06, 2010 5:01 pm

First post

Simple pneumatic gun with a modded 1 Orbit Watermaster.
Specs*
Vavle: Modded Sprinkler piloted by blowgun
Barrel: Interchangeable 3/4 (about 4')...

Last post

Wat ev I know I was jk

10 Replies

6053 Views

Last post by reedfe
Sun Mar 07, 2010 12:28 pm
Recoil Reducer

Last post by c11man
Replies: 10
by Gun Freak » Fri Mar 05, 2010 4:49 pm

First post

For my next gun, I am thinking about modeling it after the Barret 50 caliber sniper rifle:

It will be another co-ax. Im thinking that if I sleeve...

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@demon

the recoil is very small, i shoot .625in ball bearings at 750fps with just the qev resting on my shoulder and im a bit of a wimp so a .5inch...

10 Replies

3154 Views

Last post by c11man
Fri Mar 05, 2010 11:30 pm
airport legal question

Last post by psycix
Replies: 12
by grock » Thu Mar 04, 2010 1:06 am

First post

at the end of every band camp there is a massive water fight. i recently got my hands on a scuba tank holder vest, and am thinking of making some...

Last post

We aren't an airport.
Call your airport and/or flight company to be sure.

12 Replies

2808 Views

Last post by psycix
Fri Mar 05, 2010 9:20 am
Spool Valves

Last post by POLAND_SPUD
Replies: 5
by Hubb » Thu Mar 04, 2010 9:33 am

First post

For the Nerf Gun Challenge, I plan on introducing a current blaster to the pneumatics side. In order for me to do this, I have designed a spool valve...

Last post

I guess that in the end it all comes down to simplicity and ease of building...

you know, if all you have to do is to buy a couple of parts with...

5 Replies

1468 Views

Last post by POLAND_SPUD
Thu Mar 04, 2010 11:52 am
Magazine fed 40mm finished

Last post by Solar
Replies: 30
by Solar » Fri Feb 26, 2010 7:59 pm
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This launcher has porting throughout the receiver to allow air to pass from the source into ballast in the rear of launcher. The bolt plugs the air...

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Correct. It lends to more room for ammunition keeping it non-co-axial. The porting and spring tension also helps with the cycle rate. It will be...
30 Replies

14452 Views

Last post by Solar
Thu Mar 04, 2010 1:51 am
Airsoft mortar

Last post by POLAND_SPUD
Replies: 7
by timebmb757 » Tue Mar 02, 2010 8:35 pm

First post

Came out perfectly, performed above expectations. I'm incredibly happy with how it turned out.

It was dark by the time I finished it, and I only got...

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well a 3 way push button valve would be better (ideally a directly actuated spool valve)

7 Replies

6176 Views

Last post by POLAND_SPUD
Wed Mar 03, 2010 4:51 pm
Is ther a tutorial for a pvc air tank?

Last post by Hubb
Replies: 8
by 03-Z » Wed Mar 03, 2010 2:27 pm

First post

I'm talking about one that looks like a paint ball air tank but made out of PVC pipe. Is there a way I can make one?

Last post

For purposes of this thread (and to save face with the OP), he has posted his design for an air tank, which makes this thread moot.

8 Replies

2479 Views

Last post by Hubb
Wed Mar 03, 2010 4:38 pm
piston noise maker

Last post by qwerty
Replies: 2
by Dgealy » Tue Mar 02, 2010 10:45 pm

First post

So I'm wondering if it's possible to replicate, or come near the sound level produced by a small exploding water bottle by making a piston setup with...

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Because of the short barrel, my pistol makes my ears ring at anything above 100 psi, Although you mareswell have a small barrel on it to shoot things.

2 Replies

2615 Views

Last post by qwerty
Wed Mar 03, 2010 1:30 pm
Sealing face blew out barrel?

Last post by Gippeto
Replies: 27
by Gun Freak » Sun Feb 28, 2010 7:34 pm
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What the hell? Earlier, I was shooting my co ax. Then the piston's neoprene rubber gasket sealing face just blew out the barrel. I have no idea hot...

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Don't sweat it E, I don't do whipped puppy . :lol: The conversation was spiraling downward, and was best cut off.

You did what you believed to be...
27 Replies

7186 Views

Last post by Gippeto
Wed Mar 03, 2010 12:36 pm
can you run C02 straight into Qev ??

Last post by POLAND_SPUD
Replies: 25
by Patto » Tue Feb 23, 2010 7:49 pm
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Hey all,

I've had a look around but can't see anything.. Im wondering if you can run co2 straight into a QEV? Are you able to screw a co2 reg...

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you already have a balanced valve but you didn't know it... you just have to attach the chamber to the other port (the one that now leads to the...
25 Replies

8019 Views

Last post by POLAND_SPUD
Wed Mar 03, 2010 2:04 am
Check out this trigger mechanism from France

Last post by Lockednloaded
Replies: 7
by boyntonstu » Tue Mar 02, 2010 6:07 pm

7 Replies

2425 Views

Last post by Lockednloaded
Tue Mar 02, 2010 11:38 pm

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