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

1125680 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

552621 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

821441 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

967504 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

375071 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

92469 Views

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

Topics

Ball Valve Idea

Last post by spud downunder
Replies: 69
by theepicmool » Tue Jul 21, 2009 3:53 pm
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The problem with Ball Valve's is their slow opening, but what if he potato is loaded into the valve itself, instead of in front of it. As long as the...

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I see that this thread is still going, finally theepicmool you have made piston valve and im sure we would all love to see it.

But seriously i tried...
69 Replies

21795 Views

Last post by spud downunder
Fri Aug 07, 2009 5:00 am
Exhaust Gas...11 pics @ .04 seconds apart

Last post by jackssmirkingrevenge
Replies: 13
by velocity3x » Wed Aug 05, 2009 3:06 pm

First post

This past weekend, a friend came over to help test my cannon (I was the sorry a** camera operator). The shot was done with a golf ball, 300 psi...

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I think I need a much longer barrel to take advantage to the gas volume. Any thoughts?

I thought we already mentioned that ;) :P

13 Replies

2629 Views

Last post by jackssmirkingrevenge
Thu Aug 06, 2009 10:02 pm
piston wont close

Last post by ralphd
Replies: 3
by bl74 » Mon Aug 03, 2009 10:35 am

First post

Ok my gun is just about done. The valve is a 3 piston in a 3 tee with a 2 outlet. My first piston was made out of a food can with tape around it and...

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Could the piston be getting pinched on the bumper end? I recently changed my pilot valve to a bigger diameter and noticed that I had to bump the...

3 Replies

2110 Views

Last post by ralphd
Mon Aug 03, 2009 12:12 pm
my "sniper" =]

Last post by farmerboy32
Replies: 16
by boom_o_matic_2.0 » Fri May 08, 2009 1:20 pm
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I wanted to make my own sniper rifle so I did. Its my first time using a sprinkler valve. I had to jump through hoops to get this thing cause NO ONE...

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use schd 20 1/2 to get a really tight fit with the paintballs.that fits really well
16 Replies

7021 Views

Last post by farmerboy32
Mon Aug 03, 2009 8:43 am
Epoxy doesn't grip my barrel (coaxial)

Last post by frozebyte
Replies: 8
by frozebyte » Mon Aug 03, 2009 4:17 am

First post

Hello all,
I just wanted to ask a question regarding epoxy in a coaxial setup.
I recently found a small diameter pipe to use as my barrel and i used...

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are those metal files? i've been waiting to get one :) i hope the third round of epoxy works, don't want to waste my last drop(literary) of epoxy :(...

8 Replies

3331 Views

Last post by frozebyte
Mon Aug 03, 2009 7:22 am
Coaxial Problems

Last post by jmadden91
Replies: 14
by maverik94 » Sun Aug 02, 2009 12:06 pm

First post

Ok, I just built my first piston gun, which is a coaxial. It's kinda like a pengun, but a bit longer. Anyway, I am having some problems with it, but...

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All the best for your gun mate, If what JSR has suggested doesn't work, I suggest a pilot valve with higher flow than the schrader. I thought my...

14 Replies

3262 Views

Last post by jmadden91
Sun Aug 02, 2009 11:51 pm
Help with motion direction changing for revolver type cannon

Last post by 30cal man
Replies: 5
by 30cal man » Sat Aug 01, 2009 4:35 pm

First post

ok in my quest for a awesome paintball shotgun ( and by shotgun i mean something with shells that shoots alot of little 6mm paintballs at once 25-50...

Last post

that webley-fosbery is awesome but i cant find anything about how it works and even though i wanted it to be pump because i thought it would be...

5 Replies

1917 Views

Last post by 30cal man
Sun Aug 02, 2009 7:31 pm
Homemade Air Compressor

Last post by psycix
Replies: 11
by ralphd » Sat Aug 01, 2009 6:11 pm

First post

I picked up a little air compressors powered by a car's cigarette lighter as well as a 20.oz CO2 PB cylinder for 5 bucks at a garage sale today. I...

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I have some experiences with these compressors, so I thought it would be a good idea to share this relevant information here.
First off: those things...

11 Replies

3054 Views

Last post by psycix
Sun Aug 02, 2009 5:23 pm
Help me with the 'valve'

Last post by eggbom
Replies: 7
by eggbom » Sun Aug 02, 2009 7:00 am

First post

hello,

i really need idea's how to make the valve on a pneumatic cannon.
i want to use metal parts (never pvc), and i cant solder.
another problem...

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ok thanks poland!, i've send a message to brian the brain.

i go tommorow to the market and looking for stuff :)

just try

7 Replies

2388 Views

Last post by eggbom
Sun Aug 02, 2009 4:32 pm
My first spud gun

Last post by jackssmirkingrevenge
Replies: 14
by jordzan » Tue Jul 28, 2009 2:38 am

First post

Gday this is my first crack at making a gun, only just found this site a few days ago and rushed into making one so have alot of ideas to change/try...

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if the barrel is never going to be more than 3-4 feet is there a general guideline chamber size to not exceed?

Generally you should aim for a 1:1...

14 Replies

4893 Views

Last post by jackssmirkingrevenge
Sun Aug 02, 2009 1:24 am
brass gun help

Last post by jordzan
Replies: 17
by jordzan » Sat Aug 01, 2009 9:21 am
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hello folks

the other day i picked up a qev and some fittings and was hoping to get some help on what would be the best chamber size and any other...

Last post

??? WTF.. Diameter is 0.408
your seat (marked as vent in your pic Smile ) seems quite large... have you measured its ID or OD ??
the .408 diam is...
17 Replies

6461 Views

Last post by jordzan
Sat Aug 01, 2009 10:55 pm
self filling gas

Last post by inonickname
Replies: 9
by partyars » Sat Jul 25, 2009 8:06 pm

First post

hi y all,
im pretty new to this and maybe this cold be posted somewhere else in this forum but i wanted to be sure,
so here's my idea:

cant you...

Last post

Vinegar and bicarb fails, you get a bit of pressure but inside a hell of a lot of froth which then goes on to cover everything.

Carbonated drinks......

9 Replies

3949 Views

Last post by inonickname
Sat Aug 01, 2009 8:02 pm
can this be modified?

Last post by Mr.Sandman
Replies: 3
by colty-bear » Fri Jul 31, 2009 10:31 pm

First post

title says it all

Last post

It can be modified but, i would recommend that you pick up a sprinkler from lowes or a nearby hardware store. They will generally not have that long...

3 Replies

1641 Views

Last post by Mr.Sandman
Sat Aug 01, 2009 12:09 pm
BBMG: propane powered! help

Last post by inonickname
Replies: 7
by spudnutbutthut » Fri Jul 31, 2009 9:56 pm

First post

I am new to making BBMGz and need a bit of help with my parts list. I am a cheapskator when it comes to buying stuff for pvc guns. I want to make a...

Last post

Yes, use a compressor or be extremely trigger friendly.

Propane will work, though as it expands it cools- and the pressure drops off. After a short...

7 Replies

2704 Views

Last post by inonickname
Sat Aug 01, 2009 10:37 am
51mm Anti-Tank

Last post by Ragnarok
Replies: 20
by thedeathofall » Wed Jul 29, 2009 9:33 pm
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Well, i have finally gotten around to finishing this thing. (Why do I even bother calling it finished? I will forever be upgrading and downgrading...

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AFAIK nerf ammo was designed to be safe... to accomplish this it must be able to travel relatively far without the need to achieve high muzzle...
20 Replies

7952 Views

Last post by Ragnarok
Sat Aug 01, 2009 3:57 am
Transonic and supersonic pneumatic gun directory

Last post by Ragnarok
Replies: 21
by btrettel » Sun Jul 26, 2009 9:46 pm
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I've been interested in the accurate modeling of transonic and supersonic guns since a few months ago. There's not much cold hard data for guns like...

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961 MPH.. 1409 FPS..
Based on the distance between the muzzle and chrony, I'd expect error in there. Can't tell you how much, but that's far too...
21 Replies

8139 Views

Last post by Ragnarok
Sat Aug 01, 2009 3:50 am
Is this about right?

Last post by frozebyte
Replies: 5
by Alucard » Fri Jul 31, 2009 10:18 pm

First post

Well, i've finally decided on a Pneumatic Cannon, I know it wont be the most accurate of the bunch, I also know I could probably do better with a...

Last post

Firstly, it isnt a good idea to restart a new topic on the same thing. Just post this on your previous one.

Second, im very sure i already directed...

5 Replies

2055 Views

Last post by frozebyte
Fri Jul 31, 2009 11:38 pm
check out this giant vortex cannon

Last post by Technician1002
Replies: 5
by geardog32 » Thu Jul 30, 2009 11:18 pm

First post

I just saw this video and thought it would be a cool build one a little smaller. I dont know if anyone else has gotten into this.

Last post

Do you actually think that was real? I'm a bit of a cynic and think someone found out how to use the extra buttons on their vid cams and video...

5 Replies

2154 Views

Last post by Technician1002
Fri Jul 31, 2009 11:22 am
re usable airsoft grenade

Last post by inonickname
Replies: 3
by colty-bear » Fri Jul 31, 2009 2:32 am

First post

I am looking for a desigh for a reusable airsoft grenade
i want it to be cheap yet effective re usable and cool
i want it to look like this

heres...

Last post

Asides from being hard, I can suggest two things. Perhaps use a ping pong ball, softened in (weak) solvents and scored with a razor. Secondly use a...

3 Replies

1320 Views

Last post by inonickname
Fri Jul 31, 2009 6:41 am
shocked...

Last post by inonickname
Replies: 4
by cannon monkey » Thu Jul 30, 2009 7:02 pm

First post

is this good for only 75 psi???

this is a flattened penny from them machines on the beach

this is my back stop the thickness shown i am holding...

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As jack said, been done a lot.

Though it's not that there's anything wrong with doing it again. I'll do it with my next gun (q-tip), but as it's...

4 Replies

1515 Views

Last post by inonickname
Fri Jul 31, 2009 6:38 am
I have an A/C compressor to convert. Questions.

Last post by jackssmirkingrevenge
Replies: 26
by boyntonstu » Sun Jul 26, 2009 6:23 pm
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I replaced an 8,000 BTU window A/C yesterday that had a good compressor but a faulty touch pad controller.

Today I removed the old compressor and I...

Last post

Check your PM ;) also, your sig needs a link ;)
26 Replies

13710 Views

Last post by jackssmirkingrevenge
Fri Jul 31, 2009 1:56 am
4" PVC Conduit

Last post by Technician1002
Replies: 5
by auxiliary » Thu Jul 30, 2009 4:34 pm

First post

I rode my bike to Consolidated Plastic Supply and looked through their scrap yard of pipes. There, I found Sch 40 4 PVC conduit and Sch 40 2.5 PVC...

Last post

Both of them said that the conduit and the White PVC for potable water are manufactured with the same process and that they are identical in strength...

5 Replies

1571 Views

Last post by Technician1002
Thu Jul 30, 2009 10:39 pm
Regulator Setup

Last post by twizi
Replies: 17
by Mishkan » Mon Jul 27, 2009 6:21 pm
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Need some help with sanity checking all the parts I need for a portable air rig.

I want a HPA Air Tank of some kind:
68 cu inch 4500psi
Smart Parts...

Last post

is it a good reg thinkin about get in one for a secret project
17 Replies

4131 Views

Last post by twizi
Wed Jul 29, 2009 6:15 pm
Back Stop

Last post by boyntonstu
Replies: 21
by DinerKid » Wed Jul 29, 2009 9:43 am
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So i recently got a sch 120 barrel for my paintball cannon and while the pbs fit really nicely they still curve like crazy. i found some marbles that...

Last post

What I would try is a few thicknesses of carpet with a plywood backing that swings away over a tub of water.

I would set it at an angle so that when...
21 Replies

7501 Views

Last post by boyntonstu
Wed Jul 29, 2009 3:41 pm
Micro Shock pump

Last post by Mitchza89
Replies: 14
by Mr.Sandman » Tue Jul 28, 2009 4:41 pm

First post

Hey, ive been collecting mterials to make my own shock pump. Has anyone else made there own handheld shock pump. I saw sticky tapes but it wasnt very...

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As far as the threaded rod goes, it was all I could find. I would have much preferred a solid steel rod and cut the thread for the piston head myself...

14 Replies

3859 Views

Last post by Mitchza89
Tue Jul 28, 2009 8:18 pm

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