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

1124972 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

552130 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

821126 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

966960 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

374850 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

92387 Views

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

Topics

What will have better performance???

Last post by saefroch
Replies: 5
by jsefcik » Fri Jul 15, 2011 10:18 pm

First post

, Chamber then barrel or Chamber on the bottom and barrel on top,

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Doesn't matter, really. Technician1002 will probably say something about the flow restriction through the bend between chamber and barrel due to the...

5 Replies

2836 Views

Last post by saefroch
Sat Jul 16, 2011 4:00 pm
Old 32mm project

Last post by velocity3x
Replies: 3
by velocity3x » Fri Jul 15, 2011 9:03 pm

First post

I was deleting old files today and I found these. This is a cannon I designed / built last year. The renderings were generated with SolidWorks from...

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Ever thought about making a hybrid? :D

I've thought of it many times. With some minor internal changes (material substitution) this cannon could be...

3 Replies

1443 Views

Last post by velocity3x
Sat Jul 16, 2011 7:45 am
i've been busy 3rd gun in 9 days

Last post by Mr.Tallahassee
Replies: 9
by absinthe » Fri Aug 21, 2009 8:47 am

First post

yep i think i have a fever, SPUD-GUN fever.

my third gun (second copper) in 9 days, i think you can all see where I'm influenced from (thanks brain...

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jsefcik: If you would please, open a new thread in the pneumatic discussion. No need to revive a two year old thread.

9 Replies

4299 Views

Last post by Mr.Tallahassee
Sat Jul 16, 2011 2:04 am
The Penetrator

Last post by foilboy
Replies: 14
by foilboy » Thu Jul 14, 2011 2:30 pm

First post

Here's my first pneumatic build. It has a Fastenall QEV (1/2 IIRC) and the barrel is a Cold Steel .625 caliber Big Bore Blowgun. The pilot is a...

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Here you are mattyzip77:

14 Replies

6008 Views

Last post by foilboy
Fri Jul 15, 2011 8:34 pm
leakage in my pneumatic cannon

Last post by mattyzip77
Replies: 11
by mattyzip77 » Fri Jul 15, 2011 12:15 pm

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at the end of my chamber there is a small leak where the endcap joins the chamber. should i cut off the endcap and put on a new one, or just try to...

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I have all the supplies to do it any of the ways mentioned, im just trying to learn more and more in the process of everything. But, i am going to re...

11 Replies

2291 Views

Last post by mattyzip77
Fri Jul 15, 2011 6:42 pm
First cannon just died, Need idea for a new one!

Last post by Gidney14
Replies: 29
by Gidney14 » Mon Jun 27, 2011 3:23 pm
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First post!

I had an over-under cannon, the simple kind with a ball valve and such, a 2in chamber and 1.5 in barrel that i built using a guide on...

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120 feet will be fine, probably safer for MilSim anyway.

I've run into a problem- Got my SV opened up this morning and it has a guide rod. From...
29 Replies

10961 Views

Last post by Gidney14
Fri Jul 15, 2011 9:17 am
Pneumatic rifle thingy finished... for now

Last post by saefroch
Replies: 12
by saefroch » Fri May 07, 2010 6:57 pm

First post

At 4' 9 long, it is somewhat unwieldy, but I am slowly getting comfortable with the size.

Specs:
Chamber: 18 long 3/4 galvanized steel NPT nipple...

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You could build it with one ball valve. I just opted for two, it seemed easier at the time. I still like the design.

12 Replies

11106 Views

Last post by saefroch
Thu Jul 14, 2011 2:35 pm
QEV Help

Last post by mattyzip77
Replies: 15
by ansen6606 » Fri Jul 08, 2011 3:03 pm
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hi everyone i want to konw the diffrenece between a QEV with spring and one using th air system and how i can make or buy th QEV using air

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stronger and cheaper, however located in hong kong!! last time , and only time, I ever ordered anything from there, it took me 6 weeks to get my...
15 Replies

5010 Views

Last post by mattyzip77
Thu Jul 14, 2011 11:44 am
Second Pnuematic Launcher

Last post by Mr.Tallahassee
Replies: 9
by Mr.Tallahassee » Sun Jul 10, 2011 4:24 am

First post

This isn't my first attempt at a pneumatic launcher but my first one was only half as powerful. The chamber is 24'' long 1.5'' schedule 40 PVC, the...

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I recently went to the GGDT page and found the specs that are supposed to closely resemble the 1'' sprinkler valve. I input these and got the same...

9 Replies

3174 Views

Last post by Mr.Tallahassee
Thu Jul 14, 2011 4:48 am
1st Pneumatic Rifle

Last post by jackssmirkingrevenge
Replies: 33
by gsw2 » Wed Jul 06, 2011 8:14 am
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Hi everyone 1st post (although I've stalked this forum for a while),
I have previously made a PVC gun which simply consisted of a chamber, car tire...

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I've fixed the pilot chamber area, I couldn't make it any smaller, and sure enough it works great.

Your pilot volume is still far too large,...
33 Replies

10310 Views

Last post by jackssmirkingrevenge
Thu Jul 14, 2011 3:09 am
QEV not actuating!

Last post by Gippeto
Replies: 6
by gsw2 » Tue Jul 12, 2011 8:24 pm

First post

On occasion my QEV doesn't activate. My QEV is a spring type and not purely moved by air, could this be the problem? Any idea what could be the cause...

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gsw2....how about an update?? Did you put the spring in there??

FarCry...I'm sure you meant 3000psi. But no. It's gathering dust.

No good...

6 Replies

2290 Views

Last post by Gippeto
Wed Jul 13, 2011 11:38 pm
.1835 C:B Ratio Acceptable for Pneumatics?

Last post by Jabingo19
Replies: 23
by Jabingo19 » Wed Jul 13, 2011 9:53 am
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I'm working on a coaxial piston cannon with a 2.5 inch barrel and 3 inch chamber, at 48 inches long I calculated the volume of the chamber to be...

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Alright, I have everything constructed except for the back firing/filling area, my sprinkler valve is still in the mail. But besides that, everything...
23 Replies

6319 Views

Last post by Jabingo19
Wed Jul 13, 2011 11:09 pm
A2

Last post by PVC Arsenal 17
Replies: 8
by PVC Arsenal 17 » Sun Jul 10, 2011 11:42 pm

First post

I call this gun the A2. It is the successor to my ARchangel project . It's an electronically controlled pneumatic revolver with select-fire and some...

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Thanks again for the comments

POLAND_SPUD: Also an option.

Gaderelguitarist: Belt feed would be far more complicated and cumbersome. The 15 barrels...

8 Replies

4219 Views

Last post by PVC Arsenal 17
Wed Jul 13, 2011 9:36 pm
Critique: Changeable Barrel Coaxial 2" Piston Cannon

Last post by Jabingo19
Replies: 2
by Jabingo19 » Wed Jul 13, 2011 5:25 pm

First post

Please critique any problems you see, already had it told to me that I'm missing a ball valve before the quick connect.

Thanks!
Jabingo19

Last post

Yeah sorry I started a new thread, people were (critiqueing?) it in the other thread, but I wanted to make one with a title that said hey come...

2 Replies

1675 Views

Last post by Jabingo19
Wed Jul 13, 2011 5:44 pm
Need help with SMAW styled launcher

Last post by Berkut
Replies: 29
by Berkut » Wed Jul 06, 2011 11:53 pm
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First, a little background: I recently attended Oklahoma Invasion 6, a very large MILSIM airsoft operation. My squad and I were advancing along a...

Last post

I sent a pm to one of the area's admins, and have yet to receive a response, but changing the muzzle velocity to suit regulations shouldn't be hard,...
29 Replies

9730 Views

Last post by Berkut
Wed Jul 13, 2011 2:07 pm
coax handgun

Last post by Zeus
Replies: 41
by ilovefire » Fri Aug 06, 2010 6:09 am
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hey this is my second pneumatic, as far as i know it is an original design and have not seen anything like it before hope there isnt any good reason...

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Because you asked a question that's easily answered. Look for a thread called Posting Images: A Step-by-Step Guide .

It's stickied in the Website...
41 Replies

22535 Views

Last post by Zeus
Tue Jul 12, 2011 7:37 pm
pneumatic gun idea

Last post by Gun Freak
Replies: 4
by Major Collins » Tue Jul 12, 2011 2:50 am

First post

What do you think , tips and pointers?

legend :
blue is piston sealing face / 1/2 flared nipple
black is 1/2 tee
orange is piston
red is 1/2...

Last post

Use a tee with a schrader in the back port and put the other kind of blowgun (non pistol grip) in the bottom port of the tee. Diagram if you'd like.

4 Replies

1925 Views

Last post by Gun Freak
Tue Jul 12, 2011 9:26 am
QDV bumper question

Last post by c9d
Replies: 5
by c9d » Fri Jul 08, 2011 9:51 pm

First post

I have researched many threads by Technician about his QDV projects, but on thing I would like to know is can a QDV be used without using a bumper...

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do you think a spring could be used to cushion the piston AND return it back to its original position on the rod? I understand that whatever the rod...

5 Replies

2258 Views

Last post by c9d
Tue Jul 12, 2011 2:47 am
Piston Valve Design

Last post by Gun Freak
Replies: 9
by Mr.Tallahassee » Sun Jul 10, 2011 9:36 pm

First post

I've been doing research while trying to figure out a new valve for my airguns. I thought about it and put a QDV design together with a regular pilot...

Last post

Or you could make it cup shaped to decrease weight.

9 Replies

5653 Views

Last post by Gun Freak
Mon Jul 11, 2011 9:31 am
1" Full Metal Piston Cannon - WIP (pic heavy)

Last post by c11man
Replies: 25
by metallover » Wed Jun 29, 2011 12:12 am
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I have spent the last few weeks building and troubleshooting my new cannon. It is a full metal pneumatic with a 1 tee housing the piston made from a...

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that's looking pretty good and fairly accurate with darts.

On my fridgy I bought a 20lb co2 tank and it is great as an accumulator 8)
25 Replies

21608 Views

Last post by c11man
Mon Jul 11, 2011 1:05 am
Scheduled 80 High Performance Rifle(10/7/11 + Damage Update)

Last post by Sch120PVC
Replies: 23
by Sch120PVC » Sat Jul 09, 2011 8:59 am
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Rifle Specifications

Building Material: Scheduled 80 PVC
Chamber Length: 16
Chamber Diameter: 2
Chamber Volume: 50 ci
Barrel Length: 40
Barrel...

Last post

...now all i have to do is save up for a better valve!

Save up for a $20 valve? Man I'm glad I'm not a student anymore :D

University? xD
23 Replies

10745 Views

Last post by Sch120PVC
Sun Jul 10, 2011 10:17 pm
will this valve provide fast open time?

Last post by Technician1002
Replies: 16
by far_cry » Sat Jul 09, 2011 1:57 am
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hello all ,did you miss me guys :wink: :wink: :wink:

i almost 2 years didn't visit the forum ,so when i logged in i found
570 new topic's and...

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Hey, I like the idea. Nice job on an improvement to the valve.
16 Replies

4511 Views

Last post by Technician1002
Sun Jul 10, 2011 6:04 pm
Drawing of new Airgun

Last post by inonickname
Replies: 11
by FreaK_with_GuN » Thu Jul 07, 2011 9:31 am

First post

Hi

after 2 days of sitting in front of Solid Works our new projekt is designed and without any more words i post it now:

Last post

If you have a student email you can download an educational version of autocad/inventor.

11 Replies

4985 Views

Last post by inonickname
Sun Jul 10, 2011 5:26 am
Supersonic Aluminum Cannon- Piston Valve Help

Last post by Crna Legija
Replies: 33
by vakimo » Sun Jul 03, 2011 11:32 am
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Hi, this is a cannon im developing for a school project. Although its way overkill for the actual task, i couldnt turn down an opportunity to use the...

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What rubber are you using by the way? I need to replace a sealing face on a piston hybrid and so far haven't found anything that will last 20+ shots...
33 Replies

13327 Views

Last post by Crna Legija
Sun Jul 10, 2011 5:03 am
Pneumatic repeater prototype.

Last post by warhead052
Replies: 14
by warhead052 » Thu Jul 07, 2011 4:57 pm

First post

Title says all. I used a regular pop off valve set at 125psi, epoxy, 1/8 nipple, and 8 of 3/4 pvc pipe with an end cap. This was also my first time...

Last post

Just barely. It slips ever time I try and turn it though.

14 Replies

4776 Views

Last post by warhead052
Sat Jul 09, 2011 3:38 pm

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