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

1202688 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

605348 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

858190 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

1021252 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

392755 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

100115 Views

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

Topics

Will this cannon design work?

Last post by jr
Replies: 15
by jonnyboy » Mon May 26, 2008 7:56 pm
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Will it work? Is their to much room between the barrel and pilot for the piston? I can't get it shorter without the serviceable piston. In real life...

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I think that a piston is abit over your head at the moment!

not to say that you couldn't but you should start with a simple pneumatic first

one...
15 Replies

6063 Views

Last post by jr
Wed May 28, 2008 8:02 pm
Entirely New Valve Design (Balloon)

Last post by cdheller
Replies: 16
by Xerxys » Mon May 26, 2008 5:32 am
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This is a new kind of valve( of my design) that seals the chamber with an inflatable something (probably a few ballons inside each other) and should...

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A test ball would make your plan easier. standard schrader valve and all,tougher than other options mentioned so far
still don't hear how you're...
16 Replies

7373 Views

Last post by cdheller
Wed May 28, 2008 6:17 pm
Just a quick question

Last post by Wombat
Replies: 7
by Wombat » Mon May 26, 2008 12:46 pm

First post

From your experience, how much pressure can Plumbers-Goop ( Amazing Goop ) hold? I used it to seal a tank on my pneumatic, and I don't want to put...

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Alright, I'll try putting about 75 psi into it, and if it begins to fail, I just might have to peel it all off, and re glue it with something...

7 Replies

2681 Views

Last post by Wombat
Tue May 27, 2008 8:57 pm
Program to calculate the speed, distance etc

Last post by daberno123
Replies: 3
by bruno6491 » Tue May 27, 2008 6:02 pm

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anyone know the name of the program that you can enter your cannon specs, and see the ratio of the barrel to chamber and how fast it is leacing the...

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I think you're thinking of GGDT

Excellent program, I personally use it design all my guns and I know others do as well.

EDIT: beaten by both...

3 Replies

1254 Views

Last post by daberno123
Tue May 27, 2008 6:08 pm
PVC fitting help

Last post by iisthemuffin
Replies: 2
by iisthemuffin » Tue May 27, 2008 5:08 pm

First post

ok im building a cannon with a 3 inch chamber and a marble barrel...what size are marbles by the way? and i recently read that bell reducers are bad...

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hmm ill have a look around the site...also im going to go to lowes to see if i can put something together

2 Replies

1235 Views

Last post by iisthemuffin
Tue May 27, 2008 5:25 pm
Bell reducers

Last post by MrCrowley
Replies: 11
by fishyfish777 » Mon May 26, 2008 10:31 am

First post

Well, hello Spudfiles. This is my first post.

I heard bell reducers are the first thing to go wrong in a pneumatic cannon because they are not...

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Hi,

Just a comment: In Europe (at least) there are pressure rated bell reducers, e.g. the babes on page 19 here: .

The OP has no location in his...

11 Replies

5152 Views

Last post by MrCrowley
Tue May 27, 2008 3:01 pm
End cap pistons??

Last post by Mitchza89
Replies: 23
by Mitchza89 » Sun May 25, 2008 9:20 pm
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G'day guys,

I'm making a pressure pipe boom stick at the moment. I've seen that on alot of guns, there is a pvc fitting thats been sanded a bit, to...

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Should be a nice gun :D. Best of luck with the build.
23 Replies

5587 Views

Last post by Mitchza89
Tue May 27, 2008 6:14 am
Need piston ideas

Last post by Biopyro
Replies: 12
by jonnyboy » Mon May 26, 2008 1:34 pm

First post

Does anyone have an idea for a piston that fits well inside a 3'' tee pipe?

Thanks

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Try using polymorph. It's inexpensive very durable and also very light.
You can have the back hollow to reduce weight further, then just put a...

12 Replies

4426 Views

Last post by Biopyro
Tue May 27, 2008 3:48 am
Bulkhead Seals

Last post by Biopyro
Replies: 2
by Velocity » Mon May 26, 2008 11:19 pm

First post

There are basically two ways to make a piston removable from the valve. The first is to use a female adapter in conjunction with a male adapter or...

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I was having the exact same problem here What I've decided to do is just service it through the barrel port and glue it on. I found that a caulk...

2 Replies

1328 Views

Last post by Biopyro
Tue May 27, 2008 3:43 am
CO2 hookup

Last post by THUNDERLORD
Replies: 6
by skyjive » Mon May 26, 2008 4:23 pm

First post

Hi all

After making my first muzzleloading, PVC, pneumatic sprinkler valve, bike pump/schrader valve spud gun, I am looking to move on to a faster...

Last post

There are many ways, female, male fittings, nipples, compression fittings.

The female, male fittings , nipples,compression fittings Get together an...

6 Replies

2150 Views

Last post by THUNDERLORD
Mon May 26, 2008 10:55 pm
air compressor help

Last post by Spudgun on Crack
Replies: 12
by iisthemuffin » Fri May 23, 2008 3:53 pm

First post

im currently using a 12 volt car air compressor...and i was wondering if this would be a good air compressor to buy?

Last post

I forgot to mention, the small compressors are extremely loud. The mini 6 gal pancake compressor I got was so loud you could not hear yourself...

12 Replies

3513 Views

Last post by Spudgun on Crack
Mon May 26, 2008 8:21 pm
GPS Targeted Pneumatic Launcher

Last post by D_Hall
Replies: 44
by charred_cookie » Thu May 22, 2008 4:58 pm
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Ok so this is a really long story about a science fair project I built my senior year in highschool that is pretty much a glorified spud gun. I ended...

Last post

Charred,

Well, whatever you'll give me, of course!

Gun design.
The GGDT file you used.
Pictures.
Test data.
Anything and everything you'll give me....
44 Replies

11370 Views

Last post by D_Hall
Mon May 26, 2008 4:38 pm
Piston Valve Design

Last post by DonTheLegend
Replies: 68
by DonTheLegend » Wed Apr 30, 2008 8:37 pm
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This is our design for a new chamber sealing piston valve. Just looking for thoughts and feedback for improvement/ what will or won't work. The...

Last post

Thanks, we used NX 5 to draw everything, and then we just took images of the screen with snipping tool (Vista only, I think).
68 Replies

17707 Views

Last post by DonTheLegend
Mon May 26, 2008 10:29 am
Gnasher LEVER-ACTION shotty?? help

Last post by trollhameran
Replies: 19
by thewarp16 » Sat May 10, 2008 1:29 pm
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im thinking about making a gnasher lever action shotgun off gears of war if u have no idea what it looks like just put the it into google images.

i...

Last post

lol they dont, he would probably get shot by someone though
19 Replies

6758 Views

Last post by trollhameran
Mon May 26, 2008 4:18 am
a good epoxy

Last post by Biopyro
Replies: 7
by no-limit » Sun May 25, 2008 10:11 pm

First post

I want to glue (or epoxy) a washer to the end of the pvc to cut pilot volume. What would be the best glue (or epoxy) for this. My First piston I used...

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Any name-brand epoxy will be good, you won't have any problem at all using up to 300psi, possibly more. However, be careful that your piston slamming...

7 Replies

5281 Views

Last post by Biopyro
Mon May 26, 2008 3:29 am
piston weight

Last post by no-limit
Replies: 17
by no-limit » Sat May 24, 2008 6:50 pm
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I'm making a new piston now but it's just under 8oz, is that to much? If so what is the ideal weight.

Last post

I have been trying to figure out the GGDT, but not up to par yet.
17 Replies

7673 Views

Last post by no-limit
Sun May 25, 2008 10:22 pm
Joining Copper

Last post by daxspudder
Replies: 37
by n-strike » Mon May 19, 2008 2:42 pm
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Hello, I was wondering...is there any other way to join copper besides using solder? This will probably make me look retarded, but...would PVC primer...

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Welding copper is way way easy, and the kit to do it costs less than $20us. The blue propane bottles you see all over this site are blow torch...
37 Replies

8639 Views

Last post by daxspudder
Sun May 25, 2008 6:20 pm
Pilot Volume

Last post by sniper hero
Replies: 19
by no-limit » Fri May 23, 2008 7:03 pm
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How much pilot volume is needed for a piston valve to work?

Last post

ok thnx
I asked it in this topic because I thought it wasn't worth a new one
and yes my pilotvalve is big
but I think I know enough :D
19 Replies

6329 Views

Last post by sniper hero
Sun May 25, 2008 5:00 pm
Paintball CO2 tank thread size?

Last post by Spudgun on Crack
Replies: 15
by Spudgun on Crack » Sat May 24, 2008 9:33 pm
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Alright, I found an old paintball tank and decided to use it as a small air tank for use in my pneumatic setup.

I took the valve off by soaking the...

Last post

I believe its how much it can be stressed until it fails. They probably epoxied some metal together and pulled it apart with those strength testing...
15 Replies

52758 Views

Last post by Spudgun on Crack
Sun May 25, 2008 4:05 pm
Helium Baloon Tank?

Last post by psycix
Replies: 13
by Zippster » Sat May 24, 2008 2:08 pm

First post

As the topic suggests, I recently acquired a small helium tank about the size of a gas grill propane tank at a party - they would've just thrown it...

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Oh ok then.
Good luck. Dont forget to show it to us when its in use :)

13 Replies

3756 Views

Last post by psycix
Sun May 25, 2008 12:49 pm
Piston Trouble

Last post by psycix
Replies: 9
by koolaidman » Sat May 24, 2008 9:15 pm

First post

Hey, im not a noob to pneumatics, but this is my first attempt at a piston. It is not working, hence this thread, and im out of ideas. Im making an...

Last post

koolaid how much pressure do you use?
Some pistons need just more pressure to seal.
If you are using like 20 psi, try to get it up to 50 psi and see...

9 Replies

3217 Views

Last post by psycix
Sun May 25, 2008 6:50 am
efficient piston valve?

Last post by no-limit
Replies: 12
by no-limit » Sat May 24, 2008 12:01 pm

First post

I just made a piston valve with a piston that does not fit very good, it's really loose. There is also a lot of pilot volume. I use C02 and and can...

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I'm using a blow gun for piloting the sprinkler valve. Waste of money,HA, this is the 4th one I've messed up but a least it works. I will just keep...

12 Replies

4226 Views

Last post by no-limit
Sat May 24, 2008 6:48 pm
sprinkler valve

Last post by MrCrowley
Replies: 24
by iisthemuffin » Fri May 23, 2008 3:36 pm
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i currently have a ball valve on my cannon and am interested in putting an unmodded sprinkler valve on it...but i have some questions...first of...

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are you people really that uptight? i was simply asking for ideas so get off of your high horse there skippy

Wow...you're pretty damn demanding.

I...
24 Replies

6210 Views

Last post by MrCrowley
Sat May 24, 2008 4:15 pm
Air Restriction?

Last post by MrCrowley
Replies: 2
by Darkside 6ix » Sat May 24, 2008 2:43 pm

First post

Ok people, I have a problem. Most of you know that I am building a pneumatic sniper rilfe. Well when I put the specs into GGDT, I get a warning/error...

Last post

Come on, use your head.

If you're still confused after clicking the link, you want to go to the 'errors' section. :roll:

2 Replies

1121 Views

Last post by MrCrowley
Sat May 24, 2008 4:04 pm
T.D.U -Thunder Down Under

Last post by watto
Replies: 71
by watto » Fri May 09, 2008 12:23 am
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I give you... THUNDER DOWN UNDER the golf ball piston cannon, it's specs are as follows

.......... T.D.U ..........
Range: Pending...
Operating...

Last post

good good thats what I was hoping for
71 Replies

23274 Views

Last post by watto
Sat May 24, 2008 7:12 am

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