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...

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thank you for creating this website is there anything i can do to help
15 Replies

1670842 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

755566 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

983092 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

1166087 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

466840 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

131609 Views

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

Topics

Inline HV

Last post by nature-boy
Replies: 10
by The_Guerilla_Guy » Sat Dec 25, 2010 10:49 am

First post

Hi there,
I thought about a hammer valve that doesnt need extreme hammer force to open and came up with the idea in the first pic. Basically you...

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@Guerilla Guy:What exactly do you want to achieve? Do you want to open the valve manually, then it fills the small chamber around the bolt (between...

10 Replies

4505 Views

Last post by nature-boy
Mon Jan 24, 2011 1:27 pm
QEV wont work

Last post by Cosmic Muffin
Replies: 15
by Cosmic Muffin » Thu Jan 20, 2011 8:33 am
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hey all, i bought this off ebay the other day and realised the pilot thread is 3/8in. so i epoxied a 1/4in a 9bar pop off valve. and used that to...

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well ive always wanted to build a qev-pop off setup. but i didnt have the resources for full auto at the time. think i might order another qev and...
15 Replies

6185 Views

Last post by Cosmic Muffin
Mon Jan 24, 2011 4:31 am
cane gun

Last post by jackssmirkingrevenge
Replies: 39
by ilovefire » Mon Nov 01, 2010 11:52 pm
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hey iv been thinking of making a secret cane gun and came up with this design for the trigger mechanism and would like to know it it would work or...

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Something related:

Interesting hammer valve design, the full publication can be downloaded as a torrent, look for walking stick air gun .
39 Replies

39456 Views

Last post by jackssmirkingrevenge
Sun Jan 23, 2011 1:54 pm
Marble Assault rifle (WITH PICS)

Last post by Mr.michael.2468
Replies: 80
by killagorrila99 » Sun Sep 10, 2006 6:33 am
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Here's my marble Assaust rifle. It's my most powerfull cannon TO DATE!!!
Here are the pics and some plans. Keep in mind this is my first modded...

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haha oh alright well if you get what i mean, i guess i'll have to try thins out then lol
80 Replies

34382 Views

Last post by Mr.michael.2468
Sun Jan 23, 2011 12:56 pm
Un-Regulated CO2

Last post by Lockednloaded
Replies: 10
by Lockednloaded » Sat Nov 13, 2010 8:19 pm

First post

For me, un-regged co2 is my only source of high pressure in pneumatic, but I'm not sure what parts can handle it.

QEVs have been used way above...

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That's really good to know jeepkhan, looks like you're saving me a lot of money on co2 as well as efficiency. I recently came into possesion of a...

10 Replies

5978 Views

Last post by Lockednloaded
Fri Jan 21, 2011 2:47 pm
VARGAS Nitrogen (inert gas) powered cartridge gun system.

Last post by jackssmirkingrevenge
Replies: 67
by jagerbond » Mon Jun 28, 2010 3:01 pm
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VARGAS is designed to be a kinetic energy device cartridge system for less lethal applications. Cartridges are designed to be used across a platform...

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You'd need to get some extra energy to cycle it or have it a repeater rather than automated.

I doubt that chunky cartridge would cycle reliably as...
67 Replies

24255 Views

Last post by jackssmirkingrevenge
Fri Jan 21, 2011 12:03 am
Sealing pipe threads

Last post by Lockednloaded
Replies: 10
by tyrant_bb » Thu Jan 20, 2011 1:41 pm

First post

To seal pipe threads, especially steel, I have to put it in a vice and then use a huge pipe wrench to really apply force until it finally seals. The...

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as long as you're applying the tape correctly, It will work on even large diameter steel fittings. I've never had one leak on me with properly...

10 Replies

4237 Views

Last post by Lockednloaded
Thu Jan 20, 2011 8:05 pm
Yet Another PVC vs. ABS Safety Question

Last post by Technician1002
Replies: 3
by NathanF » Thu Jan 20, 2011 1:40 am

First post

Hello All, new to the forum. Built a few simple hair spray combustion guns in my time, and looking to build a pneumatic gun now. Been working on a...

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I've done some pressure testing of the not rated for pressure ABS. Since the two layers on the foam core are both thicker than the skin of a 2 liter...

3 Replies

13744 Views

Last post by Technician1002
Thu Jan 20, 2011 11:19 am
air tanks

Last post by Technician1002
Replies: 4
by qwert123 » Wed Jan 19, 2011 6:09 pm

First post

i am looking for a air tank that will hold at least 150 psi with 1 or 3/4 threads, i have seen fire extinguishers used, how well do they work? the...

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Small refillable Propane tanks have 3/4 thread in the US. They come is smaller sizes such as 1 gallon with the full size BBQ valve. Nominal working...

4 Replies

4920 Views

Last post by Technician1002
Wed Jan 19, 2011 9:20 pm
question, safe psi of glv pipe

Last post by cfb_rolley
Replies: 4
by vblock » Sun Jan 16, 2011 8:59 pm

First post

ok guys, so im making a new pnumatic airgun i was wondering what the safe working pressure of 3/4 glv pipe baught at lowes was ?

Last post

I'm sorry but I'm going to have to agree with DYI, proper spelling, grammar and questions that are a little less ambiguous are definately appreciated...

4 Replies

2190 Views

Last post by cfb_rolley
Mon Jan 17, 2011 10:27 pm
Rifled barrel?

Last post by Gippeto
Replies: 25
by wyz2285 » Thu Dec 02, 2010 4:29 pm
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Hi every body, a little question, is a rifled barrel really helps a lot on accurancy? I usually shot bbs, and it's easy to find rifled bb barrels....

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Crosman barrels are still a better deal at $25. When carefully prepped, they deliver.
25 Replies

12069 Views

Last post by Gippeto
Mon Jan 17, 2011 2:37 pm
Lever Action Shot gun

Last post by Ragnarok
Replies: 3
by sumisukyo » Sun Jan 16, 2011 2:43 pm

First post

Hey guys long time no see,
after writing my exams I went on a very long holiday with my girlfriend to Durban
got my Matrix results... I passed
Got...

Last post

It's time for me to try and get some sleep, but this might provide ideas/answers:

3 Replies

1752 Views

Last post by Ragnarok
Sun Jan 16, 2011 4:29 pm
Charging handle

Last post by ramses
Replies: 18
by FighterAce » Fri Jul 30, 2010 2:33 pm
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I finished building my first piston valve and started working on the wood for my next rifle but already I hit a snag. I'm piloting the piston with a...

Last post

That looks amazing! Can't wait to see it fire!
18 Replies

8097 Views

Last post by ramses
Sun Jan 16, 2011 1:50 pm
I just ordered this -

Last post by jackssmirkingrevenge
Replies: 10
by Slugfoot » Sat Jan 08, 2011 1:46 am

First post

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1/2 old-skool qev. :D
There are still a couple left if anybody here is interested.

The brass finish and the shape attracted me.
I'm guessing it...

Last post

Update: arrived this morning, yes it's a diaphragm valve and yes the threads are bigger than 1/2 BSP, almost big enough to fit 3/4 BSP.

No problem...

10 Replies

3088 Views

Last post by jackssmirkingrevenge
Sun Jan 16, 2011 12:03 am
Blowgun or solenoid pilot

Last post by POLAND_SPUD
Replies: 10
by cfb_rolley » Fri Jan 14, 2011 1:22 am

First post

I'm thinking of trying my hand at building a pneumatic cannon again, my last one was a 30mm diameter port T piston, which worked but eventually the...

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just for the sake of theory, would hooking up 2 separate 1/2 solenoid 3 way valves to the one button to open them both to dump a single pilot work...

10 Replies

4788 Views

Last post by POLAND_SPUD
Sat Jan 15, 2011 11:01 pm
alternative to a co2 regulator?

Last post by Lockednloaded
Replies: 5
by Lockednloaded » Wed Jan 12, 2011 3:12 pm

First post

I have a CO2 tank and an adaptor, but I don't really want to spend money in a regulator, so I thought a good way to get around that would be with a...

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I don't need a precise regulator, so I think this will be fine for my purposes as long as its accurate to ±10psi

5 Replies

1994 Views

Last post by Lockednloaded
Fri Jan 14, 2011 11:01 pm
First Piston cannon (full metal)

Last post by daniel0663
Replies: 24
by daniel0663 » Wed Jan 12, 2011 6:08 pm
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Greetings !

This is my first pneumatic cannon.
After much research on this fourm on how piston valves work etc.
(credits to MrCrowley and MRR on...

Last post

@saefroch
Ohh, i understand what he means now.
Yes, i do think also that the pilot air flow would be restricted also.

Thanks.

@Gun Freak
Hmm, i...
24 Replies

10513 Views

Last post by daniel0663
Thu Jan 13, 2011 6:28 pm
Balanced Spool Valve Design

Last post by Technician1002
Replies: 8
by boyntonstu » Sat Jan 08, 2011 12:45 pm

First post

Simple, effective, cool.

Would a cross and 2 short chambers be better for flow than a T?

Last post

I have noticed that things do tighten up some as o rings hold pressure. With care, making the walls of the grooves vertical instead of on a slant...

8 Replies

9645 Views

Last post by Technician1002
Thu Jan 13, 2011 12:08 pm
Largest piston piloted by schrader?

Last post by Fnord
Replies: 21
by metalmeltr » Wed Jan 12, 2011 6:06 pm
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What is the largest piston that can be efectivly piloted by a schrader around 100psig? I tried making a coaxial of 1 and 1/2 pvc that was less than...

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My old piston hybrid could pilot via the schader. Not well , but it worked. It used orings on the 2 piston, but it was not a %100 seal.

At one...
21 Replies

6704 Views

Last post by Fnord
Thu Jan 13, 2011 11:45 am
Valve help

Last post by jackssmirkingrevenge
Replies: 38
by nadjatee1996 » Mon Jan 03, 2011 7:35 pm
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Recently, I became curious in air guns and the like, now, I need a valve similar to a Schrader valve. The Schrader valve basically ejects air if the...

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Good man, never a good idea to start at the deep end, especially if you have no previous experience with materials etc.
38 Replies

13508 Views

Last post by jackssmirkingrevenge
Wed Jan 12, 2011 12:46 pm
The Big BoyV2 [updated version]

Last post by daniel0663
Replies: 11
by MRR » Mon Aug 03, 2009 2:49 pm

First post

I've build this little beast for a friend and before I give it to him tomorrow I'd like to share it with you guys.

Data:
Type: barrel sealing...

Last post

WOW ! looks Really awesome.
Love your homemade trigger system.
Must of been expensive to make with all that brass parts.....
Where did you get the...

11 Replies

6154 Views

Last post by daniel0663
Wed Jan 12, 2011 5:24 am
sprinkler leaking through pilot exhaust when pressurized

Last post by Technician1002
Replies: 14
by mfalconer » Fri Jan 07, 2011 9:33 am

First post

Hi everyone,

I have recently built a pneumatic cannon w/ a modified blow gun attachment. However, next... I want to build a remote control cannon...

Last post

Find a shop that does hydraulics and Pneumatics. Hydraulic hoses have to be replaced often on heavy machinery along with o rings in control valves...

14 Replies

8755 Views

Last post by Technician1002
Tue Jan 11, 2011 12:44 pm
Ball Valves...

Last post by jackssmirkingrevenge
Replies: 21
by Slugfoot » Sun Jan 02, 2011 2:48 pm
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...I've heard that they can be taken apart - with difficulty. Has anyone here actually managed this? If so, what technique did you use?
I would like...

Last post

(note: don't bother trying to post on UKSGC its totally dead, apart from, oddly enough, THUNDERLORD who appears to have been banned from spudfiles...
21 Replies

8208 Views

Last post by jackssmirkingrevenge
Tue Jan 11, 2011 1:06 am
GGDT? help from the pros?

Last post by Slugfoot
Replies: 22
by Mr.michael.2468 » Sun Jan 09, 2011 6:51 pm
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it might just be that i haven't had higher level math yet but i find GGDT rather confusing and difficult to use. i've done a lot of looking for help...

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Thanks for the help. After using my head a little, I came up with some figures which I think are reasonable.
Is there anything in the screenshot...
22 Replies

9295 Views

Last post by Slugfoot
Tue Jan 11, 2011 12:53 am
UK PVC Cannon supplies

Last post by jackssmirkingrevenge
Replies: 7
by cavemanaston » Sun Jan 09, 2011 12:54 pm

First post

I live in the south of the UK and am looking to build a second cannon using pvc but in wickes and BnQ dont seem to show any pressure rating on the...

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tennis ball size

MaxuS has a rather nice UK built tennis ball launcher but it seems to have cost a pretty penny, he says the valve alone was 80...

7 Replies

5242 Views

Last post by jackssmirkingrevenge
Sun Jan 09, 2011 6:13 pm

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