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

914009 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

447981 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

410798 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

624424 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

330184 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

79319 Views

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

Topics

high pressure pump

Last post by spudamine
Replies: 19
by spudamine » Fri May 08, 2009 6:29 pm
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here's a pump I've just finished putting together, I wanted something with the speed of a track pump but the higher pressure capability of a shock...

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I think 1 would probably be doable, mine is really quite easy on the upstroke, although you have to bear in mind that the force comes at the point...
19 Replies

15113 Views

Last post by spudamine
Sat May 09, 2009 3:55 pm
Fire Extinguisher gun help

Last post by maverik94
Replies: 6
by Clutch » Sun May 03, 2009 5:10 pm

First post

Hi i was in the woods today (Fishing) and i found a fire extinguisher!

It's a KIDDE 3 LB dry chemical fire extinguisher, without the...

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JB weld has a pressure rating of 1800 psi, It is essentially an epoxy mixed with steel, it should hold 300 psi easily. However, make sure to sand and...

6 Replies

2765 Views

Last post by maverik94
Sat May 09, 2009 3:32 pm
Pump up QEV gun. (Homemade high pressure pump)

Last post by Mitchza89
Replies: 7
by Mitchza89 » Sat May 09, 2009 1:55 am

First post

Gday everyone,

This is my new proof-of-concept gun. It's a simple throw together. The pump I'm extremely happy with and the performance is just...

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Jack you dirty minded person :D. That photo was so hard to take, it was the best one. In the other pics, I was naked trying to hold it with my old...

7 Replies

5293 Views

Last post by Mitchza89
Sat May 09, 2009 6:45 am
Da P.I.M.P

Last post by inonickname
Replies: 20
by blind909 » Mon May 19, 2008 9:58 pm
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This gun has a 3/4 inch galv. steel chamber, fast opening air valve, pistol grip, slingstot foregrip, hose adapter muzzle brake, decorated(for the...

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Yeh, I wouldn't normally bother mentioning it (and I'm not really meant to) but you should check the dates before posting. People often get annoyed...
20 Replies

6892 Views

Last post by inonickname
Fri May 08, 2009 11:29 pm
Upgrade question

Last post by Cosmic Muffin
Replies: 2
by Mike_Hunt0420 » Fri May 08, 2009 3:40 pm

First post

I am thinking about adding a magazine to my bolt action pneumatic. I'm running a regulated co2 tank and I need to take advantage of this lol. Any...

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seem to be a big fan of them dont ya irisher :wink:
there are heaps of guns on here with all the stuff your looking for. just browse the showcases.

2 Replies

1089 Views

Last post by Cosmic Muffin
Fri May 08, 2009 9:41 pm
QEV + popoff --- Making it more efficient.

Last post by psycix
Replies: 8
by psycix » Tue May 05, 2009 6:09 pm

First post

QEV + popoff systems are nice due to their simplicity, but the big inefficiency in these designs is this:
You feed air to the pilot volume while...

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Yes, subsonicspud, it will indeed make more difference with high rates of fire.

i dont get it :?: anyways, are these type of valves quicker than...

8 Replies

3336 Views

Last post by psycix
Thu May 07, 2009 8:05 am
Have you heard?

Last post by jrrdw
Replies: 11
by hatssold » Sat May 02, 2009 11:43 pm

First post

You might have heard a company called AIRDRIVE Tech...Anyways i heard some information regarding a new project they are on. They are currently in the...

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@hatssold, I just witnessed some of the best of the best look for what your talking about and came up with nothing. When you can come up with a...

11 Replies

3837 Views

Last post by jrrdw
Thu May 07, 2009 7:56 am
Spring Piston Air Rifles

Last post by jackssmirkingrevenge
Replies: 39
by maverik94 » Mon May 04, 2009 9:02 pm
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Ok, I am interested in possibly making one of these guns, they are calles Spring piston guns. Essentially, this is how your typical commercial...

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I was thinking 3mm precision bearings in a very tight fitting smoothbore barrel, a springer would easily take them past the speed of sound and...
39 Replies

14778 Views

Last post by jackssmirkingrevenge
Thu May 07, 2009 1:42 am
How to pump up a large cannon in the field?

Last post by Technician1002
Replies: 35
by jmccalip » Sun May 03, 2009 10:42 pm
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Yes I searched.

4 chamber x7ft.

I have a 33g compressor in the garage, but that doesn't do much good else where

I thought maybe C02, but that...

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The compressor is 120v.

The meter kinda reads peaks, I don't know what to make of it. I tested the 4 gallon compressor again(at 0PSI this time),...
35 Replies

12088 Views

Last post by Technician1002
Wed May 06, 2009 11:43 pm
PCP cartridge, Mark 2

Last post by LeMaudit
Replies: 4
by LeMaudit » Wed May 06, 2009 9:52 pm

First post

Here is a revision for my PCP cartridge. I followed your advices, removed the O-ring, increase the pressure by planning to use a shock-pump, decrease...

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I have no doubt the air would leak, but my first feeling would have being that it would not leak fast enough to create an equilibrium between the two...

4 Replies

1553 Views

Last post by LeMaudit
Wed May 06, 2009 10:42 pm
Finally, 4SPC completed (4" Sweet Piston Cannon)

Last post by SpudUke5
Replies: 58
by SpudUke5 » Sat Apr 19, 2008 4:20 pm
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I know i havent been posting frequently, but i have been just lurking, finding the right moment for me to post a comment. But im still here :)

Well...

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Sounds good, now all i gotta do is find some time and stop being lazy.

Ill get some as soon as i can.

EDIT: Although, i still might take this...
58 Replies

21396 Views

Last post by SpudUke5
Wed May 06, 2009 9:44 pm
Strange sprinkler valve. Help Please!

Last post by Hubb
Replies: 18
by daniele tn » Tue May 05, 2009 11:12 am
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I recently found this sprinkler valve to upgrade my small pneumatic.

The problem is that the solenoid isn't external as the ones I've always seen,...

Last post

Usually, when I mod a valve, I thread in the fitting of choice and put JB Weld or another strong epoxy around the fitting to hold it and seal it.
18 Replies

4023 Views

Last post by Hubb
Wed May 06, 2009 4:17 pm
Sealing a 1'' pipe

Last post by maverik94
Replies: 8
by maverik94 » Tue May 05, 2009 5:08 pm

First post

Ok, a simple question. For my spring piston prototype, I need a 1 pvc piston, it pretty much needs to be filled with something that will make it...

Last post

ok, I understand how to do that. Thanks yall!

8 Replies

1968 Views

Last post by maverik94
Wed May 06, 2009 2:56 pm
please help quick with my piston

Last post by Technician1002
Replies: 5
by covey12 » Mon May 04, 2009 5:45 pm

First post

hey guys i need to finish a piston valve by the end of this week, and from previous experiences im going to make it serviceable.
how do i do this? do...

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hey guys i need to finish a piston valve by the end of this week, and from previous experiences im going to make it serviceable.
how do i do this? do...

5 Replies

1978 Views

Last post by Technician1002
Wed May 06, 2009 2:05 pm
A Good Tutorial For Beggining Spudders

Last post by CpTn_lAw
Replies: 26
by Mr.Sandman » Thu Feb 19, 2009 8:24 am
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Recently, I've been noticing the number of please help me topics for making piston valves. Such common questions such as what should i make the...

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I was not saying it wasn't good :D It was damn good! But you know...you can always push a little more ^^
I just did a 20 bars shot with a short .40...
26 Replies

8707 Views

Last post by CpTn_lAw
Wed May 06, 2009 11:38 am
Attaching a 5/16" barrel to a 1 1/4" chamber STRAI

Last post by maverik94
Replies: 4
by maverik94 » Tue May 05, 2009 5:11 pm

First post

Ok, Another simple question. What is the best way to attach a 5/16 barrel to a 1 1/4 chamber and make it perfectly straight. Also, it would help if...

Last post

ok, I will try that, thanks!

4 Replies

1190 Views

Last post by maverik94
Tue May 05, 2009 8:21 pm
fittings

Last post by brettdotcom14
Replies: 14
by brettdotcom14 » Mon May 04, 2009 12:38 pm

First post

quick question what kind of fittings should i be looking to use?

ive been reading that dwv fittings are no good and my local lowes only sells dwv...

Last post

thanks for the info ill check it out later today

14 Replies

4089 Views

Last post by brettdotcom14
Tue May 05, 2009 11:41 am
Accuracy?

Last post by paaiyan
Replies: 27
by Foxx » Mon May 04, 2009 6:09 pm
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Hey guys, this is my first post here, so go easy.
I have a pneumatic gun
SPECS:
Barrel: 1 PVC ~2.5 feet long
Chamber: 1.5 PVC ~2.5 feet long
Valve:...

Last post

Someone around here once made a projectile that was a plastic cylinder for a base, hollow, about as wide as it was long. That was filled with BB's,...
27 Replies

7786 Views

Last post by paaiyan
Tue May 05, 2009 10:22 am
4 inch piston cannon (lots of pics)

Last post by SubsonicSpud
Replies: 13
by grock » Sun May 03, 2009 3:09 am

First post

as promised, i went to my uncle's place, and i return with pictures. sorry, you guys got to wait until next week for a video, there was too much...

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When I first made my 25mm copper cannon, it originally had a flat faced piston. I mucked around with streamlined piston faces and managed to get...

13 Replies

4216 Views

Last post by SubsonicSpud
Tue May 05, 2009 3:38 am
Piston materials question

Last post by Technician1002
Replies: 4
by randompkguy » Mon May 04, 2009 6:32 pm

First post

I'm building a steel cannon out of an old oxygen welding tank (I already cut it, and am still alive) and had some engineering questions for the...

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oh, sorry about that, I forgot to mention that will be using 1/8 thick neoprene on the fiberglass for the seal, I just wanted to know if 1/4...

4 Replies

1550 Views

Last post by Technician1002
Mon May 04, 2009 9:28 pm
Oh boy, I think I'm gonna blow my cannon apart!

Last post by Technician1002
Replies: 69
by jmccalip » Fri Apr 17, 2009 9:36 pm
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1lb 11oz aluminum piston! :confused2:

That's what I get for being an impulse buyer and not calculating the weight before hand...

I left the...

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The problem is the cannon is LOUD when it fires. The sound is just a huge piercing crack...I don't want to attract unwanted attention.

A longer...
69 Replies

17842 Views

Last post by Technician1002
Mon May 04, 2009 12:43 pm
4" piston valve

Last post by grock
Replies: 16
by grock » Wed Apr 29, 2009 6:13 pm
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my uncle and i designd this, all the parts are built, and just need to be assembled. its nothing special in terms of design, but it IS one of few 4...

Last post

hey guys, i messed up a little, posting the pictures not only in a different thread, but a different forum. the pictures are here

normally id...
16 Replies

4578 Views

Last post by grock
Mon May 04, 2009 11:26 am
Back to PCP !

Last post by Ragnarok
Replies: 15
by LeMaudit » Sun May 03, 2009 9:07 pm
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Hi guys,

Following my Kick’n’Blow concept and after computing a few values for spring forces and playing more with GGDT, I finally concluded that a...

Last post

It depends, large combustions for example generate more than enough recoil to eject a cartridge
That system of yours is really a direct blowback...
15 Replies

4231 Views

Last post by Ragnarok
Mon May 04, 2009 9:21 am
GGDT and in tank Quick Dump Valve Performance.

Last post by spudtyrrant
Replies: 15
by Technician1002 » Thu Apr 30, 2009 12:39 pm
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I was trying to model the performance of my valve in GGDT. I started listing it as a barrel sealer, but it was rejected as the seat and piston...

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would you really have to put any dead space on the ggdt reading?
15 Replies

8958 Views

Last post by spudtyrrant
Sun May 03, 2009 8:55 pm
paintball RPG

Last post by ssgnort
Replies: 5
by ssgnort » Sun May 03, 2009 1:54 pm

First post

Yet another Paintball rocket launcher.

Last post

About 6-7 pounds with co2, 3-4 with out tank on a bathroom scale. I like that it came out with a nice center of balance.

Mainly i just shoot the...

5 Replies

3639 Views

Last post by ssgnort
Sun May 03, 2009 3:35 pm

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