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

915230 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...

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

448416 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

420868 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...

Last post

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

626013 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

330377 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

79416 Views

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

Topics

what is a vortex cap?

Last post by Hubb
Replies: 1
by colty-bear » Thu Jul 09, 2009 6:52 pm

i kinda have an idea of what it is but not sure

Is it a pvc cap with a barrel and feed of air?

how does the mag feed to it?

Is there a vortex...

1 Replies

624 Views

Last post by Hubb
Fri Jul 10, 2009 7:05 am
Seal Around Cleanout Cap

Last post by inonickname
Replies: 6
by Mishkan » Thu Jul 09, 2009 8:55 pm

First post

So I'm using cleanout caps on my coaxial (3inch outter) for ease of changing out parts. It has a slight leak at 50ish PSI and then it starts...

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What color are you using? Use at least 6 wraps of tape.

Cleanout caps aren't really designed for pressure.

6 Replies

1963 Views

Last post by inonickname
Fri Jul 10, 2009 5:48 am
my second shock pump (full diatelas)

Last post by far_cry
Replies: 23
by far_cry » Tue Jul 07, 2009 6:06 pm
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i finished building my new hand pump .and she work nice

the highest pressure i get from this pump is 700 psi
the cylinder is 2.7mm in diameter
the...

Last post

I finished building my new hand pump .and she work nice

the highest pressure i get from this pump is 700 psi
the cylinder is 20.7mm in diameter...
23 Replies

8251 Views

Last post by far_cry
Fri Jul 10, 2009 5:04 am
Simple mass-producable gun

Last post by frozebyte
Replies: 48
by limbeh » Sun Feb 08, 2009 9:42 am
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This is a simple chamber - ball valve - barrel gun.

It's purpose is not so much for shooting, but more as a training tool in my science club (which...

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Yep, old topic but i think i've got a reason to kick it up right? Don't that there are any other Singaporeans here to give their tips.

Shouldn't...
48 Replies

14839 Views

Last post by frozebyte
Fri Jul 10, 2009 1:50 am
paintball rifle

Last post by colty-bear
Replies: 19
by colty-bear » Wed Jul 01, 2009 9:14 pm
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has a supressor, bipod, and scope. shoots dead on(really good considering the mount) shoots flat for about 80ft

whole gun

the other side

the...

Last post

oh yea idk what closest one is i live in the middle of nowhere :D
19 Replies

7504 Views

Last post by colty-bear
Thu Jul 09, 2009 10:48 pm
I was in Home Depot yesterday looking at copper fittings.

Last post by jeepkahn
Replies: 18
by boyntonstu » Wed Jul 08, 2009 6:51 am
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Copper T's come in different size combination in addition to a uniform size such as a 1 x 1 x 1.

For example: 1 x 1 x .75; and 1 x .75 x 1

The...

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a cup style piston seal allows air from the pilot to the chamber, but once piloted the chamber pressure seals the cup to the walls allowing 100%...
18 Replies

14841 Views

Last post by jeepkahn
Thu Jul 09, 2009 6:58 pm
Compact uber rifle- 400 psi

Last post by Clarke
Replies: 15
by inonickname » Wed Jul 08, 2009 1:49 am
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Well, my Bellpro 1/2 QEV got here so I put together my new cannon.

Here's some basic specs:

Bore: .212 (goddammit), 1616 anodized aluminum
Barrel...

Last post

Got my Bellpro QEV today in the mail and i must say they pack a fair punch !
15 Replies

4946 Views

Last post by Clarke
Thu Jul 09, 2009 6:31 pm
Presta Vs. Schrader.

Last post by frankrede
Replies: 6
by neeewwww » Wed Jul 08, 2009 11:27 am

First post

Hi there...

Yesterday I just finished my piston housing, and my piston... I didn´t do a real test on it... Just but my mouth at piston housing and...

Last post

launchpotatoes.com

6 Replies

5143 Views

Last post by frankrede
Thu Jul 09, 2009 12:05 pm
FWIW: $7.19 GAUGE ASHCROFT 0-600 2" 1/4 NPT

Last post by THUNDERLORD
Replies: 2
by boyntonstu » Thu Jul 09, 2009 6:12 am

First post

I found a bargain.

Perhaps others may be interested.

GAUGE ASHCROFT 0-600 2 STL CASE 1/4 NPT BRASS<206E5
Ebay Item number: 350153464964

$7.19...

Last post

LOL I misread it as FTW $7.19 Gauge ... :lol:
Nice find! (for 600psi and below).
Cheaper than Harbor Frieght.
And alot of thiers are liquid filled....

2 Replies

851 Views

Last post by THUNDERLORD
Thu Jul 09, 2009 10:17 am
My New Valve Design

Last post by Technician1002
Replies: 16
by .:: :TomDom: ::. » Wed Jul 08, 2009 4:44 am
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My new valve design. I just spent about an hour writing all the stuff that tells people about my design, then I accidentally clicked back on the...

Last post

Sweet. My design doesn't use a spring to close, it uses air pressure on the small piston side. I am pretty uneducated in this stuff but from what I...
16 Replies

6279 Views

Last post by Technician1002
Wed Jul 08, 2009 10:42 pm
Question on a new way of modding a sprinkler vavle

Last post by Hubb
Replies: 6
by glass_05 » Wed Jul 08, 2009 12:33 am

First post

i have modded many sprinkler valves before, but my question is if its possible to fill the chamber by using the same modded sprinkler valve part. let...

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I modify most of my sprinkler valves to fill from the pilot side. It actually seems to perform better doing it that way to me.

6 Replies

1680 Views

Last post by Hubb
Wed Jul 08, 2009 10:55 am
1" barrel insert for DD1....

Last post by jeepkahn
Replies: 6
by jeepkahn » Tue Jul 07, 2009 3:22 pm

First post

While I was off this past week I got a wild hair and thought to myself, Self, how hard would it be to make a 1 insert for DD1??? and I was like, Not...

Last post

If I had thought of this sooner, I would've made the decimator with a 1.25 barrel and had the ability to reduce to 1 longer barrel....

6 Replies

1271 Views

Last post by jeepkahn
Wed Jul 08, 2009 9:33 am
4" piston

Last post by glass_05
Replies: 19
by spudtyrrant » Sun Jun 28, 2009 12:58 pm
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hey guys i'm making a large 4 diameter piston and i am going to use hot glue i have seen it used successfully in 2 pistons so i'm thinking it should...

Last post

very informative thread guys! i ordered all my parts yesterday to make a 4inch piston. of course pics will come when i start putting it together
19 Replies

5164 Views

Last post by glass_05
Tue Jul 07, 2009 11:17 pm
Another way to get 400 psi

Last post by feathers
Replies: 18
by boyntonstu » Thu Jul 02, 2009 12:08 pm
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Another way to get 400 psi

Almost any 12 V 200 psi tire inflator can be purchased for under $20.

Some can do 250 an a few claim 300.

O.K. We have...

Last post

the reg on my tank tones it down to 800 and then i run an inline paintball reg to tone it even farther down i think those can do about 0 to >400 but...
18 Replies

5853 Views

Last post by feathers
Tue Jul 07, 2009 10:32 pm
Need help modifying my valve

Last post by spudtyrrant
Replies: 1
by feathers » Tue Jul 07, 2009 1:51 pm

First post

i have a water master valve its a green one and its not inline i already cut out the hole to bypass the anti siphon, but im wondering what to do to...

Last post

show us a pic of your valve and the application your are using this and we might be able to help you. do you mean constant as in it needs to hold air...

1 Replies

686 Views

Last post by spudtyrrant
Tue Jul 07, 2009 3:17 pm
Using a spring to seal a piston?

Last post by geardog32
Replies: 2
by spudkilla224 » Mon Jul 06, 2009 6:55 pm

First post

Hello everyone, i'm building a new piston valve aircannon and I have the problem were the piston won't seal foward its self. But it will exhaust...

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im assuming this is a t fitting valve. i would say if you are filling from behind you need a larger piston so that when you fill the small chamber...

2 Replies

1062 Views

Last post by geardog32
Mon Jul 06, 2009 10:23 pm
1/2" valve seat and 3/4" barrel? Please explain

Last post by Technician1002
Replies: 3
by velocity3x » Mon Jul 06, 2009 4:06 pm

First post

The model below is for a 1/2 valve seat. It shows projectile velocity increases using a 3/4 barrel against the 1/2 valve seat as opposed to using a...

Last post

A big barrel on a big valve is the best combination. This was part of the testing we did for the t shirt competition. Which is better on a 2 inch...

3 Replies

988 Views

Last post by Technician1002
Mon Jul 06, 2009 8:22 pm
Ideas needed for a pop-open stay-open pressure relief valve.

Last post by Moonbogg
Replies: 10
by boyntonstu » Mon Jul 06, 2009 8:46 am

First post

Imagine shooting a piston down a .5 sq in chamber/barrel with a 200 lb force at 140 fps..

(A fast bicycle pump))

At the bottom of its travel the...

Last post

Try playing with spring plungers.

10 Replies

3408 Views

Last post by Moonbogg
Mon Jul 06, 2009 7:39 pm
1000 psi solenoid valve vs a 3/4 hot glue piston valve.

Last post by joepage2008x2
Replies: 5
by awkward poop » Wed Jul 01, 2009 2:14 am

First post

hey guys just need a quick response here, i found this on ebay.
apparently its half inch.

the gun will be all metal galvanized steel pipe etc....

Last post

Well i dont make cannons anymore because they are illegal in the uk, so i stick to airsoft or other things.

I started making a valve but mesed it up...

5 Replies

2431 Views

Last post by joepage2008x2
Mon Jul 06, 2009 3:26 pm
A 2 stage manual pump.

Last post by Technician1002
Replies: 17
by boyntonstu » Sun Jul 05, 2009 10:49 am
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Beautiful work.

However, I believe that a free piston driven by a 250 psi 12 VDC air compressor would be easier to build.

BoyntonStu

Last post

Beautiful work.

BoyntonStu

This thread is to discuss the item in the link. I like the 2 stage design a lot. I've been wondering if it can be...
17 Replies

4595 Views

Last post by Technician1002
Mon Jul 06, 2009 9:11 am
1/2" or 3/4" QEV? Any REAL difference?

Last post by neeewwww
Replies: 27
by neeewwww » Wed Jul 01, 2009 10:11 am
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Hi there guys...

Since I saw some Spray and Pray cannons at YouTube... After that
I got the airgun disease... So I took some google research and...

Last post

Just screw the male screw of the fitting into the female screw on the Tee...

Not 3/4 Spring... x)
27 Replies

5819 Views

Last post by neeewwww
Mon Jul 06, 2009 9:10 am
triggered burstdisk paintball cannon

Last post by le_rufus
Replies: 8
by c11man » Tue Jun 02, 2009 3:35 pm

First post

so while i was waiting for some parts PLAUGE and my QEV+popoff and i was bored and that the hardware store so i desided to spend a little cash and...

Last post

Freezing paintballs is a pointless endeavor, they don't get harder they get brittle.

I would try some dowel slugs.

8 Replies

4156 Views

Last post by le_rufus
Sun Jul 05, 2009 9:29 pm
toilet valve?

Last post by THUNDERLORD
Replies: 7
by geardog32 » Thu Jul 02, 2009 12:56 pm

First post

so i managed to strike up a conversation with an employee at the hardware store today, he guessed that i was making a spud gun from my parts list....

Last post

IIRC, there was a news article where someone was stealing tons of the urinal valves and people were wondering why.
(DUHHH...For $$$$ somehow)....

7 Replies

2691 Views

Last post by THUNDERLORD
Sun Jul 05, 2009 5:59 pm
How to speed up a ball valve.

Last post by Technician1002
Replies: 10
by boyntonstu » Thu Jul 02, 2009 4:05 pm

First post

How to speed up a ball valve.

I have been out in my garage shop making a wood lever extension for my 1/2 ball valve.

I cut off the stop on the...

Last post

A fast enough piston and high COF is a winning combination.

F=ma is the universal relationship.

That is the bottom line. Period!

Projectile...

10 Replies

3274 Views

Last post by Technician1002
Sun Jul 05, 2009 2:56 pm
A no valve no chamber airgun idea:

Last post by pizlo
Replies: 3
by boyntonstu » Sun Jul 05, 2009 8:58 am

First post

I enjoy taking ideas from different arenas and combining them into a new invention:

Listed below are YouTube links that lead me to a slingshot...

Last post

This is a bad Idea from the start and has been discussed very recently. I was too harsh, but this idea will yield pitiful results, and a normal...

3 Replies

1457 Views

Last post by pizlo
Sun Jul 05, 2009 12:49 pm

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