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

1125302 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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First post

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...

Last post

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

552428 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

821326 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

967223 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

374979 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

92435 Views

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

Topics

Semi/Auto QDV idea

Last post by MRR

by MRR » Sat Dec 12, 2009 9:03 am

Recently I watched airsoft videos on YouTube and the blow back mechanism of some guns caught my attention. I googled and after watching some...

0 Replies

2528 Views

Last post by MRR
Sat Dec 12, 2009 9:03 am
pcp airgun regulator

Last post by Demon
Replies: 3
by Demon » Fri Dec 11, 2009 7:56 pm

First post

In this topic, i was told that i needed an air hole to get a pressure reference , but i found a pcp link that tells that there is no need of any kind...

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Also, since you're not using particularly high pressure, why not just buy one? I still happen to have these available

The trick here is that it as...

3 Replies

3899 Views

Last post by Demon
Sat Dec 12, 2009 8:30 am
How can I attach a 12 gra paintball c02 changer to a canon

Last post by csgunner
Replies: 1
by hudd » Thu Dec 10, 2009 9:59 pm

First post

I want to attach a 12 gram changer to a 3 inch chamber. What is the best way to do this? are ther any fittings that would be threaded correctly. It...

Last post

see

problems:
fast release of co2 led to overwhelming of the modded sprinkler valve- corrected bby putting a brass ball valve in front of the...

1 Replies

1398 Views

Last post by csgunner
Fri Dec 11, 2009 12:01 am
high speed (hope fully super sonic) PVC gun FAIL!!!! pics

Last post by Mr.Sandman
Replies: 21
by jhalek90 » Tue Dec 08, 2009 9:10 pm
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now, before i go any further... just let me state that i was not expecting this gun to reach super sonic speeds.. this was simply a low pressure...

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Remember lgg's shoot at hundreds of kilometers a second he is going for 1125+ fps.
Nothing shoots at hundreds of kilometres a second - the record so...
21 Replies

9085 Views

Last post by Mr.Sandman
Thu Dec 10, 2009 5:15 pm
What can I use to get high psi?

Last post by inonickname
Replies: 9
by Major Collins » Wed Dec 09, 2009 5:41 am

First post

ok what type of container can be obtained and be pressurized to high pressures such as 1000 to 2000 psi but is still have a relatively small...

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Small enough to strap to your back and be moderately mobile in the water. They will be charged at 3000+ psi, and contain enough gas to fill a small...

9 Replies

2393 Views

Last post by inonickname
Thu Dec 10, 2009 7:08 am
could a Pneumatic spud gun work under water

Last post by kenbo0422
Replies: 26
by bradisfun » Tue Dec 08, 2009 2:47 am
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so soon i will be going on a 2 week long kayak trip and was wonder if i could bring my spud gun, and wetheir it would matter if it got wet or fell in...

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Obviously you've never watched explosive decompression up close under water. If it were a combustion, I might agree, but not with this.
26 Replies

6148 Views

Last post by kenbo0422
Thu Dec 10, 2009 6:17 am
What kind of Valve is this?

Last post by Solar
Replies: 6
by Davidvaini » Mon Dec 07, 2009 9:25 pm

First post

Hey guys, every once in a while, I like to take some time and search for Airsoft Mines and other equipment.

I came across this and I am just...

Last post

The volume chamber is completely sealed, so there is no way for anything to clog the mechanisms. Either way seems to work ok. I just like the safety...

6 Replies

2848 Views

Last post by Solar
Wed Dec 09, 2009 3:35 pm
Copper Tubes

Last post by CpTn_lAw
Replies: 5
by elitesniper » Tue Dec 08, 2009 10:33 pm

First post

Can you guys help me this is my first time working with copper..so i want to use copper tubing for my copper gun the copper tube will connect the...

Last post

Well, in france , at the store where i go (more like a giant build-whatever-you-like superstore) they o from 3' directly to 10' for straight tubing.

5 Replies

2711 Views

Last post by CpTn_lAw
Wed Dec 09, 2009 1:32 pm
new coaxial

Last post by airheadnoob
Replies: 23
by airheadnoob » Sun Nov 29, 2009 4:10 am
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heres a new coaxial i made over 3 days
specs
7 bar
29 long
3/4 T
1/2 pieces
1/4 pieces
1 cm barrel inner diameter
im thinking of changing piston...

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7 bar i think 100 psi

don't worry i shoot it at 11 bar up now

it also does 4 shots
23 Replies

10796 Views

Last post by airheadnoob
Tue Dec 08, 2009 11:51 pm
Using a dump valve from a car

Last post by jackssmirkingrevenge
Replies: 4
by maggotman » Tue Dec 08, 2009 5:18 pm

First post

havent posted in a while so dont shoot me if somone has braught it up already. but has anyone ever used a dump valve of a turbo motor in a car ?

Last post

You can adapt it as a full auto valve for a largish bore cannon in this vein ;)

4 Replies

3308 Views

Last post by jackssmirkingrevenge
Tue Dec 08, 2009 11:35 pm
the truth about dwv, and pw pvc pipe

Last post by allen0621
Replies: 16
by covey12 » Sat Apr 25, 2009 9:31 pm
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so i had accidently picked up a dwv pipe fitting, and got a handful of complaints about it, i have used one of these before on an old cannon before i...

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I found several sites on the internet that said just because it says dwv does not mean it isnt psi rated. So i began to check it out. it is true and...
16 Replies

10120 Views

Last post by allen0621
Tue Dec 08, 2009 9:55 pm
Is petroleum jelly ideal for *MECHANICAL* lubrication?

Last post by Coodude26
Replies: 5
by Coodude26 » Mon Dec 07, 2009 9:11 pm

First post

I only ask because google kept displaying results talking about...it doesn't matter. Basically I've got a piston slightly bigger than 3 , made from...

Last post

My bad, I'm just happy to see they sell 100% petroleum jelly instead of skimping out on ingredients.

5 Replies

7749 Views

Last post by Coodude26
Tue Dec 08, 2009 5:44 pm
Fluidsim

Last post by POLAND_SPUD
Replies: 9
by POLAND_SPUD » Sat Dec 05, 2009 8:12 pm

First post

hi,
I downloaded this programme a few months ago but I forgot to install it... today when I was looking for some file on my computer I realized that...

Last post

there are valves for hydraulics that are rated to 3000 psi - it seems that they are worth trying out one day

but generally speaking it would be...

9 Replies

5185 Views

Last post by POLAND_SPUD
Mon Dec 07, 2009 6:04 am
c:b ratio

Last post by Ragnarok
Replies: 14
by randompkguy » Sun Dec 06, 2009 1:42 am

First post

I know that this might have been answered before, but what is the optimum c:b ratio for an air cannon? I know from others' testing that 1:1 seems to...

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Due to the fact the projectile at the muzzle is plowing its way through air, it is undesirable to have a muzzle pressure of zero.
Zero pressure at...

14 Replies

3082 Views

Last post by Ragnarok
Mon Dec 07, 2009 3:31 am
Rectangle Qev

Last post by Daltonultra
Replies: 4
by elitesniper » Sun Dec 06, 2009 12:04 am

First post

Hey guys been a while, help me here.. is this the same as a regular shuttle qev
anyone one use these before? good air flow or what?
:)

Last post

will it be good in piloting a 1'' coax copper piston with a 1/2'' barrel? or should i go with this qev?
sorry guys im new to qevs never used one!...

4 Replies

1828 Views

Last post by Daltonultra
Mon Dec 07, 2009 2:34 am
help with volume of air chamber...

Last post by Major Collins
Replies: 14
by Major Collins » Sun Dec 06, 2009 1:29 am

First post

ok if i had a piece of tube 25 mm round or circumference and hrmm lets say it was a meter long how much air would fit in ?(like not being pressurized...

Last post

Yes thankyou people need to relax just have a little have fun i was joking about blowing things up -.-

14 Replies

3485 Views

Last post by Major Collins
Sun Dec 06, 2009 6:47 pm
Homemade air pressure regulator

Last post by jean
Replies: 20
by Demon » Fri Dec 04, 2009 5:51 pm
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Hello all,

My current project is an bullup pcp airgun that will shoot 6 mm .42 grams bb's at 450 fps (anything higher is a firearm in canada) with...

Last post

it is really simple

a hole in the piston lets the high pressure air from right site to left site and let it out between the piston and the wall
now...
20 Replies

18958 Views

Last post by jean
Sun Dec 06, 2009 6:08 pm
rifle barrels

Last post by Demon
Replies: 18
by poppamies » Thu Dec 03, 2009 1:33 pm
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hi!

i have builded some high power pcp airguns and the biggest is .25cal. i used airgu barrels. no i have desingnin a big bore PCP airgun over 3...

Last post

jus t for known im going to make a build log from my new airgun build. just need to get the materials and start building.

We would be interested in...
18 Replies

6279 Views

Last post by Demon
Sun Dec 06, 2009 1:32 pm
Lowest Pressure to break SOS?

Last post by Brian the brain
Replies: 29
by boyntonstu » Mon Nov 23, 2009 12:06 pm
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What is the lowest pressure that has been used to propel a projectile weighing at least 25 grains beyond the SOS?

Last post

I love the recent hit single pokerface for that same reason..

But let's not go into that here...
29 Replies

6686 Views

Last post by Brian the brain
Sun Dec 06, 2009 9:32 am
Advanced bolt system

Last post by Major Collins
Replies: 2
by Major Collins » Sun Dec 06, 2009 2:17 am

First post

ok i have high standards lol ... i hate seeing all ghetto bolt system and the minimal effort that goes into them but that fine if there happy with it...

Last post

i haven't been able too :( cos my current pump broke but before i brought it to a friends and borrowed his pump and it does leak where the copper and...

2 Replies

1783 Views

Last post by Major Collins
Sun Dec 06, 2009 8:00 am
Breech Loading Nail Dart Gun - Trombone Style

Last post by Major Collins
Replies: 7
by boyntonstu » Mon Nov 30, 2009 4:15 pm

First post

Breech Loading Nail Dart Gun - Trombone Style

Type L tubing is smaller in ID than type M. Duh!

Using a full no-stop coupling seems very tight....

Last post

looks like a hassel :/ not my type of breech but i guess it works for a shoot at random stuff cannon

7 Replies

2860 Views

Last post by Major Collins
Sun Dec 06, 2009 1:18 am
Help ! how do I make a rail mount...

Last post by cdheller
Replies: 19
by Major Collins » Fri Dec 04, 2009 12:33 am
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ok anyone know how to make a rail mount ?lol i have a scope sitting in my room but i cannot use it :( its for a 10 mm rail and i rather a metal mount...

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[quote= Major Collins ?the Scope Mount Extrusion Drops sounds great but there is no picture :(

gonna bite my tongue for a day or 2
19 Replies

8023 Views

Last post by cdheller
Sat Dec 05, 2009 9:28 pm
Coax fast build [updated]

Last post by airheadnoob
Replies: 13
by MRR » Fri Apr 10, 2009 4:07 pm

First post

This is a build on a topic reply.

I build it in about 1 1/2 hours and it is my first coax ever.

Total length: 99cm
Chamber: 1 , 40cm + 20cm...

Last post

here go

explains alot

13 Replies

5566 Views

Last post by airheadnoob
Sat Dec 05, 2009 6:28 pm
A puff of breath and 150 fps

Last post by jackssmirkingrevenge
Replies: 7
by boyntonstu » Tue Nov 24, 2009 10:47 am

First post

Here is an independent test done by Billy McCaskill from Baker LA.:

To stay with the current convention in referring to various blowguns, they will...

Last post

And that's not just his mouth... :roll:

You mean the valve seat :D

7 Replies

2137 Views

Last post by jackssmirkingrevenge
Sat Dec 05, 2009 2:49 pm
How do I figure valve coef in GGDT?

Last post by Jeeperforlife
Replies: 3
by Jeeperforlife » Thu Dec 03, 2009 6:24 pm

First post

I understand all of the other parameters in GGDT well enough to trust the out come except this. How would I figure it? The gun I am currently...

Last post

Thanks I think I will just leave it with what GGDT has as a standard.

Thanks,
Marcus

Edit, I figured the Print screen out. I did not realize I had...

3 Replies

1714 Views

Last post by Jeeperforlife
Thu Dec 03, 2009 11:49 pm

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