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...

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thank you for creating this website is there anything i can do to help
15 Replies

1202456 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

605245 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...

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great job everyone
64 Replies

858122 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

1021188 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

392723 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

100104 Views

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

Topics

best cheap bb ammo

Last post by Carlman
Replies: 6
by dilweed » Sat Apr 19, 2008 11:03 am

First post

lol today i went down to the bnq. i was looking for pipes for bbs. after i founf the ones i like, i went to the section with diferent sixes of beads,...

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im using a homemade bolt action airgun. 140-180 operating pressure 1/4 ball valve, small barrel about the size of the ball valve elastic band trigger...

6 Replies

2008 Views

Last post by Carlman
Sat Apr 19, 2008 12:07 pm
2inch sprinkler valve pilot problem

Last post by Jacksa26
Replies: 8
by Jacksa26 » Wed Apr 16, 2008 6:54 am

First post

hi everyone,

for my latest project i am making a large bore pneumatic using a 2 inch sprinkler valve i was given recently. The chamber i am using to...

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thanks a bunch for all your replies guys, i ended up just using the 1/4in ball valve for the trigger. I added in a 1/4in elbow as well to make the...

8 Replies

3872 Views

Last post by Jacksa26
Sat Apr 19, 2008 1:13 am
Venting: Schrader vs. mini ball valve

Last post by tmacd995
Replies: 5
by flamerz14 » Fri Apr 18, 2008 8:11 am

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I wanna build something new (since i have de-commissioned my combustion). I'm looking forward to building a copper barrel sealing, and i have come up...

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Sorry, sometimes I forget how lucky am I to be able to buy such things and use them for work and for play
In that case, I have no further suggestions

5 Replies

3162 Views

Last post by tmacd995
Fri Apr 18, 2008 11:32 pm
Questions over safety regarding 12 grams Co2 & Steel Pip

Last post by biged
Replies: 22
by Blitzen » Wed Apr 16, 2008 10:22 am
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Whats Up?!? :D

I am trying to build a gun stock ball valve launcher that is powered by 12 gram Co2 canisters. The whole purpose of this launcher is...

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If a massive volume suddenly dumped from a large tank into a unrated fitting I can see the fitting failure and the object spinning and maybe taking...
22 Replies

10998 Views

Last post by biged
Fri Apr 18, 2008 5:15 am
spud guns I've made

Last post by DYI
Replies: 9
by Stephen Holliday » Wed Apr 16, 2008 10:27 am

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These are spud guns I've made. Nothing elaborate, but all shoot great.
The first on is a breech loading rifle with a 1 in. barrel about 40 in. long...

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As you probably know, SCH 40 is a thickness rating, not a pressure rating. The problem here is that DWV PVC fittings don't have incredibly high...

9 Replies

4573 Views

Last post by DYI
Thu Apr 17, 2008 8:51 pm
marble gun (damage pics)

Last post by sniper hero
Replies: 2
by sniper hero » Thu Apr 17, 2008 3:25 pm

First post

hi this is my gun
it's only a gun for short time because I am waiting for parts for the coaxial I want to make and then I need this parts again
the...

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yeah it was bent but I fixed it
higher is almost impossible with the pump I use
and yeah it's only till I get my new parts so I will keep it like...

2 Replies

2117 Views

Last post by sniper hero
Thu Apr 17, 2008 3:38 pm
Modded Elbow?

Last post by THUNDERLORD
Replies: 8
by THUNDERLORD » Wed Apr 16, 2008 2:05 am

First post

Does anyone know how to modify an elbow or T fitting like in clide's GB semi ?

I read all 7 pages of his post looking for more information on it....

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I believe I just used a 2 elbow with one end cut down, a cut down 2 x1.5 bushing, and a 1.5 street elbow, but that series of fittings was because I...

8 Replies

2079 Views

Last post by THUNDERLORD
Thu Apr 17, 2008 11:35 am
Compact Grenade Launcher

Last post by sniper hero
Replies: 26
by Davidvaini » Wed Mar 12, 2008 1:13 am
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Its not completely done (Needs paint and rail system and better trigger.)
But I thought I would show you guys my first prototype for a Compact Burst...

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the gun is simple small and effective :P
how far does it shoot (I know it's already asked but I am just curious:D)
26 Replies

12137 Views

Last post by sniper hero
Thu Apr 17, 2008 10:12 am
Shock Pump

Last post by Sticky_Tape
Replies: 15
by Sticky_Tape » Tue Apr 15, 2008 6:35 pm
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This is my shock pump it is similar to Btbs style pump but with a modification just ask questions if you don't understand somthing.

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There is olny about 10mm of volume inside that pressur pipe it has a id of abot the size of a airsoft bb.
15 Replies

4601 Views

Last post by Sticky_Tape
Wed Apr 16, 2008 3:47 pm
Soon to be built 4inch housing piston, 3 inch porting

Last post by psycix
Replies: 47
by SpudUke5 » Sun Jan 20, 2008 6:40 pm
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Well i am soon going to make a 3 inch porting gun in a couple of weeks but i wont be able to use it because it is winter now.

Now it is going to be...

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Sweet!
Cant wait to see you piston :)
47 Replies

21317 Views

Last post by psycix
Wed Apr 16, 2008 4:11 am
Piston Help

Last post by Sergeant Dotson
Replies: 46
by Sergeant Dotson » Sun Apr 13, 2008 1:16 pm
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I'm not typically the type to ask for help, but well, I need some. I just made the main construction of my first piston cannon about a week ago now....

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OK,ok. I did some tests and I came out with this. I can either make it seal and not move back, or make it move back and not seal. I just made some...
46 Replies

9533 Views

Last post by Sergeant Dotson
Tue Apr 15, 2008 7:09 pm
Opening Cannon

Last post by Shrimphead
Replies: 13
by Shrimphead » Mon Apr 14, 2008 11:23 am

First post

I built a co-axial piston gun with a 3 chamber and a 1.5 barrel. This gun is like my avatar. The barrel goes through a modified 3 -1.5 bushing, that...

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Not a lot. I used the blow dryer for a couple of minutes, then pounded the barrel out from the back. I'm hoping to finish this gun soon, maybe real...

13 Replies

6531 Views

Last post by Shrimphead
Tue Apr 15, 2008 6:40 pm
8 feet; 2"; Dual 1 inchers; painted black...

Last post by SpudFarm
Replies: 16
by ToppRamen » Sat Jul 14, 2007 2:23 am
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Hey guys, love the site. I went googling for some forums to compare my latest work to anyone else's. I love the work that that has been done on...

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dead topic... (Messenge to short)
16 Replies

8090 Views

Last post by SpudFarm
Tue Apr 15, 2008 3:48 pm
how to make a piston valve

Last post by SpudFarm
Replies: 17
by SpudFarm » Tue Apr 08, 2008 1:29 pm
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this topic saves me loads of work

on a piston you want a good seal between the piston and the housing so it can pilot/trigger. if it is too loose...

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ok this topic is dead!
17 Replies

7115 Views

Last post by SpudFarm
Tue Apr 15, 2008 3:20 pm
Rotating seal?

Last post by iknowmy3tables
Replies: 15
by )DEMON( » Mon Apr 14, 2008 12:00 pm
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Hi guys. I know I have not been on in a while but I hope everyone is still good. I had to go though 10 000 new posts recently and I can see this...

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you could make a rottory seal with vinyl tubing but its hard to get something that big I guess, wait you could shrink it since its only the valve...
15 Replies

4531 Views

Last post by iknowmy3tables
Tue Apr 15, 2008 3:17 pm
2" piston ideas?

Last post by watto
Replies: 18
by niglch » Sat Apr 12, 2008 10:37 pm
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I'm attempting to build my first pneumatic with a 2 PVC tee piston housing. Besides casting from epoxy, what else have you guys used for making your...

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32mm(1 1/4 ) couplers fit good in 50mm(2 ) pipe I filled one with glue and it works good. If it needs sanding you can wedge it onto a drill and hold...
18 Replies

5311 Views

Last post by watto
Mon Apr 14, 2008 9:10 pm
Expansion Tank

Last post by Gippeto
Replies: 1
by miskaman » Sun Apr 13, 2008 10:10 pm

First post

I've heard you need an expansion chamber if you want to safely use Co2 in a cannon. Is that true? Because I've seen guns with and without such...

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No, you do not need an expansion chamber, IF you use a regulator to reduce the pressure, OR your canon was built to handle the unregulated pressure...

1 Replies

2178 Views

Last post by Gippeto
Sun Apr 13, 2008 10:24 pm
new golf ball cannon

Last post by trae08
Replies: 18
by trae08 » Sun Aug 12, 2007 9:10 pm
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ok heres my new gun. it shoots golf balls and anything else like spuds for example. i found a 3 way manifold that ive had for a while so i have my...

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went to my work the other day and i put a hole in 1/4 inch plywood from 30 feet. sorry for not getting a vid up yet but i have a small backyard and...
18 Replies

11066 Views

Last post by trae08
Sun Apr 13, 2008 7:57 pm
pretty sweet "cannon

Last post by trae08
Replies: 8
by trae08 » Sat Apr 12, 2008 11:20 pm

First post

ok i been wanting to do this for a while no but never had the time. but today i finally did.

i took a 3/4 inch end cap filled it half way with epoxy...

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you mean kinda like a pinball think? you pull the pin back and let it go and it pops a hole in the co2?

i get about 50-75 ft. but after around 50 it...

8 Replies

3411 Views

Last post by trae08
Sun Apr 13, 2008 7:46 pm
Pneumatic Bow

Last post by daccel
Replies: 11
by daccel » Sun Apr 13, 2008 3:55 pm

First post

I got inspiration for the design from Brian the Brain's post in this thread: . I forgot to search until after I drew it :roll:, so I didn't realize...

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I'm not sure if it's what you meant, mopherman, but having the rod inline with the sabot is probably the simplest and most efficient design, the more...

11 Replies

6124 Views

Last post by daccel
Sun Apr 13, 2008 7:38 pm
Help me with the maths for a refill tank

Last post by rcman50166
Replies: 5
by hyldgaard » Sun Apr 13, 2008 8:14 am

First post

Hello.
Im considering making a portable tank for my upcoming pneumatic gun, and im looking for help in calculating how many shots i can get from a...

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This has been discussed before. Don't know how much the link will help (didn't read the entire thread)

5 Replies

1333 Views

Last post by rcman50166
Sun Apr 13, 2008 11:31 am
Metal coax

Last post by sniper hero
Replies: 25
by elitesniper » Sun Mar 30, 2008 10:07 pm
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Well, here you go should be self explanatory, 3/4 galvanized steel chamber 1/4 exhaust airsoft barrel, operating pressures 200-300psi, black iron...

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cool update but is black tee higher pressure rated?
looks better now but are you going to paint it?
:D :D
25 Replies

7885 Views

Last post by sniper hero
Sun Apr 13, 2008 5:23 am
Air Delay Mine

Last post by itsme
Replies: 151
by PVC Arsenal 17 » Sun Feb 04, 2007 9:44 am
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I've been trying to come up with some sort of pneumatic mine for ages. It had to be small, cheap, easy to build, and the most challenging- it had to...

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i know i am way late on this but its a very good idea exspecialy the ball valve some one was talking about all you would have to do is exstend the...
151 Replies

57388 Views

Last post by itsme
Sat Apr 12, 2008 6:34 pm
A series of newb questions

Last post by DYI
Replies: 31
by Natex88 » Thu Apr 10, 2008 6:41 am
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Okay I've been looking at spud guns for years, and now I've finally overcome my explosion fears enough to make one, although my girlfriend doesn't...

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That's interesting, because PVC shards leaving the failure point would be somewhere in between bullets and knives. I'd lean more towards the bullet...
31 Replies

9185 Views

Last post by DYI
Sat Apr 12, 2008 6:11 pm
3 air chambers??? Is there a better way??? (UPDATED new pic)

Last post by jrrdw
Replies: 24
by ImHUGEnJAPAN » Thu Apr 10, 2008 9:02 am
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This is what I came up with. I added a 60 air chamber for more power. I hope this helps. For now I have to wait until the glue dries.

I want...

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Ok, I finally got to test fire the design this morning at 60 psi and I noticed a nice increase in power just shooting hacky sacks across my living...
24 Replies

5631 Views

Last post by jrrdw
Sat Apr 12, 2008 11:34 am

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