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

1670037 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

755310 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

982885 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

1165899 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

466718 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

131570 Views

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

Topics

prototype ballistic knife

Last post by jackssmirkingrevenge
Replies: 96
by Crna Legija » Wed Apr 27, 2011 6:46 am
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Jsr was talking about using a quick connect to make a ballistic knife in another thread(cant find it), so i gave it a go. Its quite powerful at only...

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I also ground the first 2cm of the blade about 1mm thiner and it made a big improvement in penetration of the same wood

Pressure = Force/Area ;)
96 Replies

39700 Views

Last post by jackssmirkingrevenge
Wed May 18, 2011 10:07 am
Fetch toy, tennis ball launcher

Last post by Moonbogg
Replies: 8
by MyDogLikeTennisBalls » Thu May 05, 2011 12:28 pm

First post

The first one I built used a huge 4 chamber, and only one sprinkler valve to dump air to the barrel. Lots of wasted air. That is the first video....

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LOL @ failed fetch attempt! I had a similar situation when I launched a potato for a guy with a shotgun to shoot the spud as skeet, and he just...

8 Replies

7438 Views

Last post by Moonbogg
Mon May 16, 2011 10:31 pm
First Airgun

Last post by Alster370
Replies: 108
by Alster370 » Mon Feb 21, 2011 9:50 am
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Hi guys this is my first build so go easy on me. javascriptemoticon(':D')
Im looking for some feedback which will hopefully make my next build a lot...

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I just realised when testing for leaks that I can use the pressure release on my pump as a pilot for my gun. It works very effectively, and instead...
108 Replies

38277 Views

Last post by Alster370
Mon May 16, 2011 12:01 pm
Valve CV for a 1/2 inch bore cannon?

Last post by High-PSI
Replies: 4
by High-PSI » Mon May 16, 2011 8:01 am

First post

Hey Guys,

I am building an all metal 1/2 inch pipe (.60 bore) cannon with my son. It will be firing Delrin slugs through a 30 inch barrel at 300...

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I actually already fired a bench test rig with this valve and slug (though with a 4 foot barrel). It fired a 18 gram metal tipped slug clear through...

4 Replies

1735 Views

Last post by High-PSI
Mon May 16, 2011 8:45 am
sneak peak of full auto 1'' bore cannon VIDEO

Last post by jackssmirkingrevenge
Replies: 27
by jhalek90 » Sat Apr 09, 2011 11:40 am
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well, here is the video.
NOTE: the barrel is NOT plugged.

This is a sneak peak of my WIP.

The pop off valve is set to 60 psi, it pilots a 1''...

Last post

yes. yes it is.
27 Replies

9259 Views

Last post by jackssmirkingrevenge
Mon May 16, 2011 12:47 am
"Adjustable Weight" Compound-Round

Last post by jackssmirkingrevenge
Replies: 10
by High-PSI » Sat May 14, 2011 6:48 pm

First post

Hey Guys,

I need a heavier round than the normal 178 gram compound round. So, I was planning on making my own end caps that are heavier. I even...

Last post

Of course, at a long enough distance, nearly any slug can be seen in flight from directly behind

Even with supersonic bullets though really its the...

10 Replies

2704 Views

Last post by jackssmirkingrevenge
Sun May 15, 2011 4:39 pm
Iteresting new QDV variant on youtube

Last post by High-PSI
Replies: 13
by Technician1002 » Sat May 14, 2011 11:35 am

First post

I was checking my youtube channel and noted another QDV animation in the related videos. It is a bolt action QDV with a spring to pull it open (the...

Last post

How about making the projectile the piston (obviously reversed direction). That would be even simpler. :)

I've been banging on about that for years...

13 Replies

4469 Views

Last post by High-PSI
Sun May 15, 2011 7:34 am
Would this work???

Last post by jackssmirkingrevenge
Replies: 6
by Doctore » Sat May 14, 2011 5:25 pm

First post

I was thinking about this recently.It is simple but i dont know is it efficient.
Is there anything similar to this,if so please tell me.I might build...

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JSR made a similar contraption a while back, quite a bit smaller though.

Same concept, different geometry .

6 Replies

2864 Views

Last post by jackssmirkingrevenge
Sun May 15, 2011 1:04 am
sprinkler valve cannon help

Last post by Gun Freak
Replies: 11
by Major Collins » Thu May 05, 2011 8:14 am

First post

My current air cannon is just a mess of brass fittings and it just leaks so much so id though id give something else a go.

I was thinking about...

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also anyone know a good way of making pvc air chambers ?
Yeah it's only been done 87 million times before 8)

11 Replies

3168 Views

Last post by Gun Freak
Sat May 14, 2011 3:28 pm
Multishot Regulator

Last post by irisher
Replies: 26
by CommanderI » Thu May 12, 2011 3:24 pm
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Hi,

I am just building my first airgun, it will be an multishot or semi auto QEV 6mm. My airreservoir will be on the pilot side,so when I trigger...

Last post

The rotary selector switch is just for safe semi full . A circuit for bursts would be good though...

A rotary switch with a 565 was how I* set up...
26 Replies

18933 Views

Last post by irisher
Fri May 13, 2011 4:42 pm
question about size of sealing face

Last post by jackssmirkingrevenge
Replies: 13
by cfb_rolley » Wed May 04, 2011 4:46 am

First post

This is just a quick one, if the sealing face of my piston is the same diameter or smaller than what it seals against, will the valve still work, and...

Last post

It's a system JSR is rather fond of.

Is it? Doesn't strike me as familiar.

13 Replies

3508 Views

Last post by jackssmirkingrevenge
Thu May 12, 2011 5:51 am
Little problem...

Last post by warhead052
Replies: 5
by warhead052 » Wed May 11, 2011 11:04 am

First post

I have a little bit of a problem now... I did some searching, and did not find much that helped. My sprinkler valve will not take anything above 50...

Last post

Jrrdw, I have not removed it since I made the gun, so yeah, its facing the right way.

It my be a leak, I can check again. I will fill my air tank...

5 Replies

1969 Views

Last post by warhead052
Wed May 11, 2011 1:05 pm
loading and installing O-ring for coax

Last post by jackssmirkingrevenge
Replies: 6
by shiny455 » Mon May 09, 2011 4:16 am

First post

I'm currently building a gun with a coax piston valve to shoot .3 calibre ball bearings the last thing i think i am having trouble with is finding a...

Last post

i know the detent would increase the performance by a lot but would there be a way of figuring out how much. i first thought that the coefficient of...

6 Replies

1756 Views

Last post by jackssmirkingrevenge
Wed May 11, 2011 7:03 am
(great air rifle ideas)

Last post by jackssmirkingrevenge
Replies: 6
by LovableAirGuns » Tue May 10, 2011 8:56 am

First post

Hey every one i found this site not long ago and thought it is helpful to me for when i look for designs that i can use on my air guns so im sure...

Last post

One of their muzzle brakes look like my suppressor baffle.

Had you ever actually made that?

6 Replies

2714 Views

Last post by jackssmirkingrevenge
Wed May 11, 2011 4:15 am
best way to make a pvc air chamber

Last post by Meat
Replies: 9
by Major Collins » Mon May 09, 2011 11:00 pm

First post

as we all know pvc would be one of the weaker materials for pneumatic spudgun use ,but what is the ideal way to make a pvc air chamber.
A pipe...

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Yes thats what nesting is. Nesting (at least with the pipe I use) doesn't even give as good as a seal than using real couplers for me, but your pipe...

9 Replies

7334 Views

Last post by Meat
Tue May 10, 2011 11:20 pm
3 inch piston valve cannon build.

Last post by Technician1002
Replies: 27
by LovableAirGuns » Sun May 08, 2011 12:27 am
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Hey everyone.

A friend and I are building a 3 piston valve air cannon made from metal. We are planing to to do shooting at around 400psi or more we...

Last post

One comment on the piston seal. At 400 PSI in that diameter there will be tremendous force on the valve seat. If the seat is a narrow pipe edge, it...
27 Replies

11144 Views

Last post by Technician1002
Tue May 10, 2011 12:30 am
break barrel discussion

Last post by mark.f
Replies: 6
by Major Collins » Mon May 09, 2011 5:18 am

First post

on goathunters pneumatic named goat's gun .... what is used to lock the barrel into place i cant seem to work it out :(

Last post

The coupler the barrel locks into is cut not at the halfway point, but slightly less, so that the coupler deforms when the barrel is pushed onto it,...

6 Replies

2283 Views

Last post by mark.f
Mon May 09, 2011 4:44 pm
Is ABS safe to use for a pneumatic cannon?

Last post by Technician1002
Replies: 9
by xXriderXx7 » Sun May 08, 2011 10:36 pm

First post

Hi all,

I built a combustion potato cannon a few weeks ago strictly out of abs pipe. It ended up being about 7 foot tall and launched potatoes...

Last post

I do know that excess sunlight makes it a brittle mess. Old HDPE pails are easy to shatter with marshmallows.

When it is in good shape it will split...

9 Replies

13252 Views

Last post by Technician1002
Mon May 09, 2011 4:35 am
First pneumatic.

Last post by Slyder2k8
Replies: 11
by Slyder2k8 » Tue May 03, 2011 10:36 pm

First post

I know to alot of ppl that have been at this for a while this will seem a lil chincy. The plans were printed in 2002. Needless to say they were a bit...

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Update. All but eliminated the honking with the mods to the blow gun. Found some 3/8th steel braided flex line. Going to replace the plastic one with...

11 Replies

4447 Views

Last post by Slyder2k8
Sun May 08, 2011 6:35 pm
gluing pvc pipe and fittings

Last post by Major Collins
Replies: 2
by Major Collins » Sun May 08, 2011 7:52 am

First post

can you glue pvc pipe to , i dont know the name but the fittings are black. It is not abs pipe and fittings.
similar to this

i have a smilar plug...

Last post

thats the one i was looking for,
is it possible to get 50 mm threaded pvc plugs?
all i can find are 50mm dwv push caps

2 Replies

972 Views

Last post by Major Collins
Sun May 08, 2011 8:22 am
Portable compressors?

Last post by Technician1002
Replies: 19
by Slyder2k8 » Fri May 06, 2011 10:10 pm
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Hey guys i was looking around today trying to find portable compressor. I found a 12v rechargeable pistol grip one that will do up to 120 psi. Which...

Last post

For that amperage, I recommend fusible links instead of fuses on low voltage applications.

You can see the small wire I used for my inverter. It is...
19 Replies

8709 Views

Last post by Technician1002
Sat May 07, 2011 11:37 pm
epoxy

Last post by jackssmirkingrevenge
Replies: 13
by shiny455 » Thu May 05, 2011 2:40 am

First post

i was wondering what type of epoxy i should use on brass and copper and maybe where i would be able to find it. also would epoxy be able to handle...

Last post

Ragnarok is a ponce

Yeah, sometimes... but we can't hold it against him ;)

And as JSR stated make sure your material will hold the pressure...

13 Replies

4845 Views

Last post by jackssmirkingrevenge
Fri May 06, 2011 6:05 am
Hand cannon.

Last post by warhead052
Replies: 16
by warhead052 » Wed May 04, 2011 1:19 pm
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Tell me what you think. Also, the projectile is not sealing, so let me know if you can help... The jb weld just simply gets pushed out some how....

Last post

Yeah, when I get more, I am going to cap 1, and jb weld the other. Which ever works better I will use.
16 Replies

11502 Views

Last post by warhead052
Thu May 05, 2011 11:09 am
Pressure Ratings.

Last post by jrrdw
Replies: 1
by Slyder2k8 » Wed May 04, 2011 12:18 pm

First post

Sorry if this is somewhere else on the forums i didnt find it. If this is a repost or not necessary feel free to remove/edit/delete it. Just thought...

Last post

Look here.

At the top of the page, How to + Other>Pipe Info.

1 Replies

3048 Views

Last post by jrrdw
Wed May 04, 2011 12:37 pm
Greetings and Salutations!

Last post by Gun Freak
Replies: 5
by Slyder2k8 » Mon May 02, 2011 4:13 pm

First post

Hey everyone. Brand new to the forums and fairly new to the pneumatic gun area. Starting my first project. It is from a diagram i downloaded about 4...

Last post

1.25 sch 40 pvc fits quite nicely over 1 , so you may be able to cut o-ring grooves in the 1 barrel to seal the breech.

5 Replies

1487 Views

Last post by Gun Freak
Tue May 03, 2011 7:40 pm

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