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

1670368 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

755414 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

982986 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

1165976 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

466772 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

131588 Views

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

Topics

Hammer valve design?

Last post by mark.f
Replies: 15
by limbeh » Sun Dec 20, 2009 10:22 pm
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Hi,

I've been trying to find a diagram explaining how a hammer valve works. Have been searching the site (esp this section, the theories section &...

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Nice, but isn't a stapler a little steep when you could make a purpose-built hammer? :wink:
15 Replies

12464 Views

Last post by mark.f
Thu Mar 31, 2011 3:32 pm
brass fitting sizes

Last post by mark.f
Replies: 6
by Major Collins » Thu Mar 31, 2011 8:23 am

First post

what is the fitting size for a blowgun , the side the quick connect would go through ? is it 3/8s or 1/4s

Last post

i just measured one with iphone app ruler its about 11mm

*rhgktwqlrhtvgiqohf12t54b29r1hnfbowoekqlr* :D

So, paraphrased, you're asking:

Take,...

6 Replies

1790 Views

Last post by mark.f
Thu Mar 31, 2011 9:24 am
Need help for a modification!

Last post by warhead052
Replies: 19
by warhead052 » Mon Mar 28, 2011 9:00 pm
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Rainbird CP-100 with flow control. Please tell me how to modify it so I dont f**k it up! I will give you guys pictures in a little bit.

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Ok, I told him. He is just going to get the rainbird because its easyier for him to remember? I dont know, what ever he gets I will work with though...
19 Replies

7440 Views

Last post by warhead052
Tue Mar 29, 2011 7:43 pm
HPA tank fill assembly

Last post by mark.f
Replies: 10
by auxiliary » Mon Mar 28, 2011 8:30 am

First post

I am thinking about building a small caliber high pressure semi automatic launcher and my plan is to use an HPA paintball tank as the air source. To...

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You will die of old age before pumping a 48 cubic inch tank to 3000 psi, I would seek to incorporate some sort of fridge compressor feed into your...

10 Replies

10192 Views

Last post by mark.f
Tue Mar 29, 2011 8:42 am
Help With Making A Hammer?

Last post by Gun Freak
Replies: 33
by Major Collins » Wed Mar 23, 2011 6:01 am
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i am face with the the challenge of making a hammer roughly 17 mm circumference without a lathe... what do you guys suggest?

by the way how heavy...

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Yep, and if the valve spring was stronger then the valve would close before the pilot volume is vented fully.
33 Replies

8858 Views

Last post by Gun Freak
Mon Mar 28, 2011 8:26 pm
First rifle.

Last post by warhead052
Replies: 9
by warhead052 » Sun Mar 27, 2011 3:38 pm

First post

I am almost done, I am going to modify the sprinkler valve in just a few minutes. I will be getting a screw in schrader valve from Ace hardware in a...

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Hey guys, just a little update, my dad is taking back the valve today, and getting the other for me, and also, I will be ordering some schraders for...

9 Replies

2209 Views

Last post by warhead052
Mon Mar 28, 2011 12:44 pm
High speed pneumatic gun simulation

Last post by DYI
Replies: 12
by btrettel » Wed Mar 23, 2011 2:44 pm

First post

This is a continuation of the discussion DYI and I were having about high speed simulation .

So, GGDT is known to be inadequate at high speeds. We...

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I am aware of implicit methods and the MoC. The main attraction of the explicit finite difference approach for me is how intuitive the method is, and...

12 Replies

8275 Views

Last post by DYI
Sat Mar 26, 2011 5:14 pm
Bolt action question.

Last post by warhead052
Replies: 14
by warhead052 » Fri Mar 25, 2011 7:55 pm

First post

What material should I use? PVC, Steel, or Copper. I need a cheap and easy to use material, that can hold up to 300 psi, and also I need it to be...

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I am getting my dad to take me to a couple local firearm shops as I type. I will get pricing on rifle stocks and stuff and let you guys know how big...

14 Replies

3942 Views

Last post by warhead052
Sat Mar 26, 2011 11:06 am
Cheapest QEVs Around

Last post by squidchicken
Replies: 7
by Lockednloaded » Mon Mar 21, 2011 9:04 pm

First post

I was browsing Spudfiles when I accidentally clicked an advertisement that took me to a pneumatic/hydraulic parts supplier. I actually looked around...

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:roll: too bad they dont have them here in nz

7 Replies

3341 Views

Last post by squidchicken
Sat Mar 26, 2011 4:35 am
Chamber placement.

Last post by warhead052
Replies: 32
by warhead052 » Wed Mar 23, 2011 7:21 pm
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If I were to use a M1A1 Stock and build my airgun in it, where should I place the chamber for optimum performance? I will attempt a bolt action...

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I have seen 1/2 sprinkler valves, but they are rare. My grandfather used to have one, I dont know if he still does, but it was from like 1960 so I...
32 Replies

7773 Views

Last post by warhead052
Fri Mar 25, 2011 8:26 pm
Fire Extinguisher question.

Last post by warhead052
Replies: 5
by warhead052 » Thu Mar 24, 2011 1:18 pm

First post

If I used a commercial sized tank, how would I hook it up to my gun? I was thinking about leaving the mechanics on a refillable tank, but changing...

Last post

Jack, thats exactly what I was talking about, but it wouldbe upside down, and I would just hit the handle for a quick refill of my main tank.

5 Replies

2193 Views

Last post by warhead052
Fri Mar 25, 2011 10:51 am
PACa Mk.II, French airgun

Last post by Tobin
Replies: 62
by G-man » Sat Sep 18, 2010 7:52 am
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Hi everybody, I'm G-man, the administrator of patator.frbb.net, somewhat the French spudfiles .
I'm here to show you my last creation, that's my...

Last post

Awesome gun, especially the pump!
Can you describe and paint how it works. How is the gaskets made to handle 28bar?

Edit: Nevermind, saw this has...
62 Replies

49826 Views

Last post by Tobin
Thu Mar 24, 2011 4:14 pm
3" Tee Piston Valve Questions

Last post by tony48
Replies: 33
by tony48 » Sun Mar 06, 2011 2:23 pm
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I'm planning on making a barrel sealing piston valve inside a 3 tee with a 2 barrel. It can be used at 60 to 80 fps. I need some help with the...

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I have been working on the plan for this piston for a couple weeks and was wondering if a 3 coupler is necessary to give me enough room behind the...
33 Replies

8494 Views

Last post by tony48
Wed Mar 23, 2011 5:23 pm
barrel length

Last post by DYI
Replies: 16
by Major Collins » Mon Mar 21, 2011 12:18 pm
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what is the optimal barrel length for power and accuary , im not too sue if it matters but the projectile is is roughly 17 mm ,about the...

Last post

Interesting as this topic is, perhaps we should either start a new one specifically for this discussion, or continue it by PM. We've drifted quite a...
16 Replies

10159 Views

Last post by DYI
Wed Mar 23, 2011 2:23 pm
Combustion or Air? +Intro

Last post by saefroch
Replies: 7
by loganc58 » Tue Mar 22, 2011 10:37 pm

First post

Hello,
I have always been a long time forum lurking among several boards. This past weekend I was browsing around and found this pretty cool site...

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I don't think there should be any doubt to anyone that because of the scalability of a compressed air launcher, a pneumatic design can comfortably...

7 Replies

6587 Views

Last post by saefroch
Wed Mar 23, 2011 2:14 pm
What are optimum parts for QEV's?

Last post by warhead052
Replies: 26
by warhead052 » Tue Mar 22, 2011 3:00 pm
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I would like to know what would be the best to use, pvc, brass, or steel? I would also like to know if I could get some easy to make schematics...

Last post

Ah ok, new to the forum.....
26 Replies

6343 Views

Last post by warhead052
Wed Mar 23, 2011 10:37 am
inline hammer valve

Last post by Major Collins
Replies: 5
by Major Collins » Mon Mar 21, 2011 12:07 am

First post

what would be the best way to make an inline hammer valve? i was thinking liek the internals on a shardaer valve

Last post

i like the nelson paintball gun hammer i think i will keep that idea

5 Replies

3416 Views

Last post by Major Collins
Wed Mar 23, 2011 5:48 am
First time cannon builder.

Last post by Crna Legija
Replies: 3
by warhead052 » Mon Mar 21, 2011 5:45 pm

First post

I am a first time cannon builder, with only 1 cannon made. So I guess you could call me a novice. But now to the point. Can someone please teach or...

Last post

this will help yea look around use teh wikki.

3 Replies

1735 Views

Last post by Crna Legija
Mon Mar 21, 2011 7:09 pm
tennis ball doesn't seem to fit well in 2.5" pipe

Last post by mark.f
Replies: 4
by harmon12407 » Mon Mar 21, 2011 12:41 pm

First post

Hey guys,

I ordered some 2.5 pvc to use as a tennis ball barrel, but the tennis ball seems too large for the pipe. The ball is a Penn 4, and should...

Last post

Tennis balls require some squishing to fit into 2.5 SCH-40. I've had easier loading with both the pressureless balls and cheapo multicolered tennis...

4 Replies

12929 Views

Last post by mark.f
Mon Mar 21, 2011 7:04 pm
the reason why you want a good bumper in a piston valve

Last post by mark.f
Replies: 18
by hollowpoint666 » Sun Mar 20, 2011 4:58 pm
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long story short, I was testing out bumpers for my 3in barrel sealing piston valve (2in pilot) and well, one of the materials i used didn't stop the...

Last post

The rating is the number that says 240 psi (or whatever other pressure), never the NSF mark.

Fittings do not have a specific pressure rating...
18 Replies

10712 Views

Last post by mark.f
Mon Mar 21, 2011 7:02 pm
Aluminium keychain coax

Last post by mark.f
Replies: 14
by turner » Thu Mar 17, 2011 4:59 pm

First post

what do you guys think? Barrel is .18 brass and theoutside is 1/2 with .035 wall.

I used apresta valve because they have no spring and are way...

Last post

A solid rubber piston is definitely a good idea for something this small, and hardware (screws and washers) might be difficult to obtain and align in...

14 Replies

8338 Views

Last post by mark.f
Mon Mar 21, 2011 7:36 am
shell ejecting help

Last post by jackssmirkingrevenge
Replies: 4
by Major Collins » Sat Mar 19, 2011 9:21 am

i quickly looked through iknowmy3tables's pneumatic Deus Ex Machina and i couldnt see or work out how it case ejected can someone help me out?

like...

4 Replies

2801 Views

Last post by jackssmirkingrevenge
Sun Mar 20, 2011 10:50 am
hammer valve blow gun

Last post by Zeus
Replies: 1
by Major Collins » Sat Mar 19, 2011 2:13 am

First post

had a quick search but couldn't find any , has any one doe this . Used a blowgun as a hammer valve , for actuation a spring loaded piston .

I have...

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It's been suggested before, can I recommend putting site:www.spudfiles.com at the end of a google search, it sometimes returns things the site engine...

1 Replies

1387 Views

Last post by Zeus
Sat Mar 19, 2011 4:17 am
semi auto

Last post by POLAND_SPUD
Replies: 2
by Major Collins » Thu Mar 17, 2011 5:17 am

First post

lets get straight to the point ... how do you make an auto cocker? just like one in a paint ball gun. a Diagram too please :)

Last post

ohhh how cute.... it has a 3 way valve and and air cylinder :D

not a bad design shouldn't be too difficult to build

2 Replies

1137 Views

Last post by POLAND_SPUD
Thu Mar 17, 2011 8:48 am
6mm Brass 'T' Single Shot Bolt Action - SSBA 'T'

Last post by GUNSANDBURGERS
Replies: 23
by Patto » Mon Feb 22, 2010 9:22 am
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This is my first gun posting, so all comments will be greatly appreciated!!

The whole project revolved around making a hammer valve small cal....

Last post

oooooops my bad :P
23 Replies

28028 Views

Last post by GUNSANDBURGERS
Wed Mar 16, 2011 1:02 pm

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