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

913185 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

447725 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

405736 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

623554 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

330046 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

79264 Views

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

Topics

High power Qtip gun.

Last post by EpicMadness
Replies: 23
by warhead052 » Sat Nov 26, 2011 10:52 am
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When I say high power, I mean it. I put one through my sheet rock and had to tell my parents I put a tack in the wall to hang a poster instead of...

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When I say high power, I mean it. I put one through my sheet rock and had to tell my parents I put a tack in the wall to hang a poster instead of...
23 Replies

7419 Views

Last post by EpicMadness
Tue Nov 29, 2011 8:21 am
Quick connect coupling question

Last post by jackssmirkingrevenge
Replies: 27
by sharpshooter11000 » Sun Nov 27, 2011 4:05 pm
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Does anyone know how I could remove the valve inside a quick connect coupling that stops air flow when the coupling is disconnected? Should I just...

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Ah thanks. I might get a handle machined, that would be safer.

If you have that option, go for it!
27 Replies

4763 Views

Last post by jackssmirkingrevenge
Tue Nov 29, 2011 12:45 am
qev and slide valve semi auto?

Last post by jackssmirkingrevenge
Replies: 60
by lklaussen » Tue Nov 15, 2011 8:52 am
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Hi, what would be the ideal way to hook up a slide and qev valve for reliable semi auto firing? I'm tryinng to shoot paintballs. What valve size...

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1 - How hot, how long?

Not too hot. Too much heat will cause a metal chamber for example to expand and pull away from the epoxy endcap, it doesn't...
60 Replies

14150 Views

Last post by jackssmirkingrevenge
Tue Nov 29, 2011 12:32 am
Cartridge Powered Air Rifle Ideas

Last post by DerpWithAGun
Replies: 53
by DerpWithAGun » Fri Nov 25, 2011 1:58 am
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Hey Guys,

I have decided to make an air rifle that shoots using cartridges. It seems to be efficient enough. So here is a simple drawing of my...

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Do you think I should build the lever action shotgun first or the bolt action? I cant decide lol

Maybe you shouldn't put the carriage before the...
53 Replies

20166 Views

Last post by DerpWithAGun
Mon Nov 28, 2011 10:46 pm
grenading PVC ballistic test

Last post by EpicMadness
Replies: 64
by jackssmirkingrevenge » Mon Nov 05, 2007 3:14 am
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While the title might suggest results, this is actually an appeal for those who have better facilities than I can afford.

After seeing this failure...

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its not really that complex, its just you added an internal heating element, just pouring boiling water before closing the end caps could do the...
64 Replies

20813 Views

Last post by EpicMadness
Mon Nov 28, 2011 3:48 pm
A Question for the Piston Hybrid Owners

Last post by jrrdw
Replies: 7
by mark.f » Sun Nov 27, 2011 10:06 am

First post

This is about a pneumatic cannon.

I'll get right to it...

For those of you who have a piston hybrid with a larger piston and a smaller spool that...

Last post

Thread cleaned...

7 Replies

2307 Views

Last post by jrrdw
Sun Nov 27, 2011 11:44 pm
hi comunity :) help with modding a sprinkler valve

Last post by AMADEOa7x
Replies: 10
by AMADEOa7x » Sun Nov 27, 2011 3:10 pm

First post

hi every one, i have a question, i buy this valve like this one:...

Last post

What school is this? What grade?

CBTIS 237 5SEMESTER

10 Replies

1924 Views

Last post by AMADEOa7x
Sun Nov 27, 2011 10:22 pm
HELP modded sprinkler valve leak!

Last post by Frost
Replies: 3
by Frost » Sun Nov 27, 2011 4:23 pm

First post

i blow in one end of the valve and it passes right threw, i used a blow valve trigger .

EDIT: i just stuk my finger and pushed up the plunger an...

Last post

please close the thread zues helped me

3 Replies

2034 Views

Last post by Frost
Sun Nov 27, 2011 6:11 pm
solenoid valve to QEV

Last post by Fexo180
Replies: 2
by Fexo180 » Fri Nov 25, 2011 9:58 pm

First post

Curious on how the plumbing is done for a 5 port herion solenoid valve to a Qev or a 3 port push button festo to a Qev..

I have trawled the forums...

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JSR... you god darn legend! got it sussed out with that little piece of info :D

whoop whoop semi auto mini pneumatic :)

2 Replies

1161 Views

Last post by Fexo180
Sat Nov 26, 2011 6:31 am
Air Tank Help

Last post by Technician1002
Replies: 19
by DerpWithAGun » Wed Nov 23, 2011 5:30 am
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Hey guys,

I'm in planning stages of a new air rifle I want to make. I'm getting a lathe soon and I want some advice to help build a simple bolt...

Last post

The HTNL link caused the blank posts.
19 Replies

6178 Views

Last post by Technician1002
Fri Nov 25, 2011 10:04 am
Newbie needs to do research before asking for plans

Last post by jackssmirkingrevenge
Replies: 4
by slashbasher » Fri Nov 25, 2011 2:08 am

First post

I'm new here and I want to build me a pneumatic tater gun. I would like to build one that has the piston inside of it if it's not to hard. I would...

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Just to give newbie a slight push in the right direction, something like this is relatively easy to put together with readily available and cheap...

4 Replies

1271 Views

Last post by jackssmirkingrevenge
Fri Nov 25, 2011 7:05 am
Fixing a bad threaded PVC coupling

Last post by Gun Freak
Replies: 8
by microman171 » Thu Nov 24, 2011 8:05 pm

First post

Hey Guys,

I recently added a sprinkler valve to pilot my 50mm piston cannon. It made an awesome difference, and I was looking forward to getting...

Last post

Anything's possible. I'd make a groove in the male part for the o-ring. Go for it.

8 Replies

4045 Views

Last post by Gun Freak
Thu Nov 24, 2011 10:48 pm
one for JSR!!

Last post by jackssmirkingrevenge
Replies: 7
by Brian the brain » Wed Nov 23, 2011 3:30 pm

First post

Check out this vid and this guy's channel!!

He is like you and me..but combined in a single person... :?
And he has been machining stuff for a bit...

Last post

I'm tempted (and don't worry, there are some pneumatics yet in the pipeline...) but a hammer valve PCP seems a little too... normal, for my tastes at...

7 Replies

1477 Views

Last post by jackssmirkingrevenge
Thu Nov 24, 2011 1:50 am
striker airsoft shotgun

Last post by Judge_Jon
Replies: 10
by Mr.michael.2468 » Fri Nov 11, 2011 10:53 pm

First post

hey everyone, im looking for a little help on an idea i've had for awhile...

everyone know's that paintball guns have that magic little regulator...

Last post

designing an ejection system would greatly add to the complexity...

Well i'm kind of in a similar boat in what i'm trying to design so i've thought...

10 Replies

6741 Views

Last post by Judge_Jon
Wed Nov 23, 2011 8:15 pm
All Aluminum 2" Diaphragm Valve Cannon

Last post by Atattack
Replies: 3
by Atattack » Sun Nov 20, 2011 5:44 pm

First post

It took me awhile to complete this but it is finally done. Thanks again to all of the members on here who helped me with this.

Air Chamber-3 x 24...

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Some padding is definitely in order. Still trying to figure out what material to use. Thanks for compliment and help jack.

3 Replies

2554 Views

Last post by Atattack
Tue Nov 22, 2011 6:24 pm
Semi Auto Revolver

Last post by pneumaticcannons
Replies: 3
by DerpWithAGun » Tue Nov 22, 2011 4:01 am

First post

Hey guys!

I'm getting a $1400 machine that has a lathe and a mill all in one and I was planing to get one of those Nerf Maverick Revolvers and use...

Last post

the gun has a piston inside that does two things, shoots the dart, and also pushes the cylinder (in which the piston is enclosed) forward which...

3 Replies

1220 Views

Last post by pneumaticcannons
Tue Nov 22, 2011 7:40 am
Blowgun + 1" modified sprinkler valve

Last post by microman171
Replies: 10
by microman171 » Sun Nov 20, 2011 10:05 pm

First post

I've done something wrong here. Standard blowgun (1/4 in 1/8 out) onto a modified sprinkler valve (has a spring inside) I bought from Mr Crowley. I...

Last post

I wish it were that simple... The blowgun valve is broken to the point where air coming from the 1/8 side will leak out the valve lever. Fortunatly,...

10 Replies

5134 Views

Last post by microman171
Tue Nov 22, 2011 12:51 am
Supa-Valve Maintenance

Last post by mark.f
Replies: 3
by cook85743 » Wed Nov 16, 2011 2:44 pm

First post

Sorry if this is posed somewhere else. I'm new to this forum. I have a pneumatic cannon using two of Spudtech's Supa-Valves. I aquired it from a...

Last post

If you take it apart, add an alignment mark on the back plug and tee, as IIRC Joel/New Guy didn't/doesn't use any type of jig or measurement for...

3 Replies

1022 Views

Last post by mark.f
Sat Nov 19, 2011 4:50 pm
blow forward pop-off valve

Last post by jackssmirkingrevenge
Replies: 20
by LeMaudit » Thu Nov 17, 2011 8:05 am
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Hi guys,

Here's some fun experiment I'm doing with JSR's help, who's explaining me *so patiently* pressure valves basics and pop-off physics :-D...

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It does POP quite a bit in fact :D

My explanation is that spring + weight gives the bolt a fair bit of intertia, so when it finally gets going,...
20 Replies

6427 Views

Last post by jackssmirkingrevenge
Fri Nov 18, 2011 6:35 pm
2 x 4 cannon

Last post by pneumaticcannons
Replies: 45
by jagerbond » Sat Jun 11, 2011 7:35 pm
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USG was asked to build a cannon to chuck 2 x 4's 200mph this past Tuesday for National Geographic channel show being filmed today (Saturday). The...

Last post

wow, very nice :)
unfortunately I won't be able to see the whole video because of my location :x
hopefully, somebody will upload the firing scenes...
45 Replies

13355 Views

Last post by pneumaticcannons
Fri Nov 18, 2011 4:35 am
Ideas for why my QEV is leaking [new gun]

Last post by jackssmirkingrevenge
Replies: 4
by andras23 » Thu Nov 17, 2011 9:37 am

First post

Hi guys nice to meet you all, I'm a new member to spudfiles but have definitely been coming back to this site over and over again and watching DIY...

Last post

- Is a large pilot volume detrimental to the triggering of the QEV?

Yes, it means slower pressure reduction in the pilot area and consequently...

4 Replies

2675 Views

Last post by jackssmirkingrevenge
Fri Nov 18, 2011 3:16 am
Piston Valve Troubleshooting

Last post by ktap
Replies: 12
by ktap » Wed Nov 16, 2011 11:29 am

First post

I currently am making a new all metal spudgun, however this is my first piston valve design.

Currently, the spudgun is completely finished, the...

Last post

Well, epoxy, as always, fixes everything. Works great now. Thanks for the help.

Any 1/2 high pressure QEVs anyone know of? Ball valves are great for...

12 Replies

4117 Views

Last post by ktap
Thu Nov 17, 2011 2:56 pm
Soda stream spud gun project

Last post by AircannonSweden
Replies: 15
by AircannonSweden » Mon Nov 14, 2011 3:10 am
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I think i will build one something like this:

Pics when its done come soon. I just need a coupler from R15 - R8 for the soda stream tank :)

Last post

what is the the thread size on an australian soda stream tank? is it 3/8

some screw threads to soda stream :)
15 Replies

9125 Views

Last post by AircannonSweden
Wed Nov 16, 2011 2:24 am
Mt paint grenade launcher :D

Last post by conkfa47
Replies: 3
by conkfa47 » Thu Nov 10, 2011 2:47 am

First post

I recently finished a launcher i plan to use to fire paint grenades in paintball games. Here's a video of it firing:

Im in the process of making a...

Last post

You probably tried this already, but maybe if you got rid of the sabot and just used the latex grenade with a bunch of baby power it would still go...

3 Replies

2199 Views

Last post by conkfa47
Sun Nov 13, 2011 6:18 pm
check valves on air pumps?

Last post by Gun Freak
Replies: 1
by urgle the danish cow » Sun Nov 13, 2011 11:58 am

First post

i discovered that my local store carries many check valves and i am inspired to make an air pump for the ones i buy always break.
i understand the...

Last post

The air pressure generated on the stroke opens it; once the pressure equalizes, the spring closes it.

1 Replies

806 Views

Last post by Gun Freak
Sun Nov 13, 2011 12:42 pm

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