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

1125711 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

552652 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

821447 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

967522 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

375075 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

92474 Views

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

Topics

Piston valve tennis ball cannon Help!

Last post by jackssmirkingrevenge
Replies: 8
by Chornbeak » Tue Jul 21, 2009 7:12 pm

First post

Well I've been in the process of planning/ building a fairly compact tennis ball cannon with a 4 chamber. Under-over config. I have run into the...

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Is there still a big advantage from a 1 sprinkler valve to 1.5 port piston valve? Or would that not make too much of a difference?

It would make a...

8 Replies

5378 Views

Last post by jackssmirkingrevenge
Wed Jul 22, 2009 12:07 am
I HAZ SOS!!! lolcat referance...

Last post by jeepkahn
Replies: 42
by jeepkahn » Tue Jul 14, 2009 9:07 am
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No, I don't have any pics of the chrony read, and conditions may or may not have affected the local SOS, but there was a significantly differant...

Last post

Here I go trying to burst my own bubble, but isn't the Cd of a smooth sphere lower at higher velocities or am I confusing Cd with actual drag???
No,...
42 Replies

9350 Views

Last post by jeepkahn
Tue Jul 21, 2009 11:24 am
barrel sealing piston valve vs QEV

Last post by cannon monkey
Replies: 5
by cannon monkey » Mon Jul 20, 2009 8:46 pm

First post

whats the differnce between the two
basicly
is a piston free moving and QEV the same thing but a spring pushing it up to seal?

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alright whats good for a bumper i been noticing the bottom of my piston is flaring out from slaming into the side of the tee fitting i only got some...

5 Replies

3076 Views

Last post by cannon monkey
Tue Jul 21, 2009 8:46 am
Messed Up pressure gauge?

Last post by Hubb
Replies: 5
by PVC Arsenal 17 » Fri Jul 17, 2009 3:06 pm

First post

I threaded my new air pressure gauge (McMaster part# 9767T212) into my Palmers Female Stabilizer (Low pressure spring kit: 0-250 psi, 300 psi max.)...

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I would start by replacing the gauge. It may have just been the part that got damaged and not the actual Stabilizer. I remember I busted a gauge on...

5 Replies

1196 Views

Last post by Hubb
Tue Jul 21, 2009 8:18 am
need help with a website

Last post by jrrdw
Replies: 3
by Bully Dog Airsoft » Mon Jul 20, 2009 8:40 pm

First post

Their was a website that someone gave me on here that I can't remember, It had all kinds of pneumatic parts like qev valves and stuff like that....

Last post

Start posting your topics in the proper sections, I've all ready sent you two messages about posting in the wrong sections.

3 Replies

2727 Views

Last post by jrrdw
Tue Jul 21, 2009 5:56 am
12v compressor

Last post by Technician1002
Replies: 2
by Broderick » Tue Jul 21, 2009 5:36 am

First post

I dunn if this is a dumb question but would a 12V air compressor be powerful enough to operate a pneumatic rifle?

Help much appreciated :)

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Most are built for topping off a low tire. They are not designed to handle the constant running of multiple shots. The output is low volume.

Due to...

2 Replies

428 Views

Last post by Technician1002
Tue Jul 21, 2009 5:54 am
new cannon design please asist.

Last post by MrCrowley
Replies: 12
by SSGT Sultana » Mon Jul 20, 2009 1:02 am

First post

new spud cannon im deciding to make. consists of two small fire extingisher tanks which go to above 250psi each. two 3/4 nipples from these hook up...

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also i dont want the fire extingishers weldied to gether
If they're not welded, they'd be epoxied. As far as i'm aware you can't get normal threaded...

12 Replies

4820 Views

Last post by MrCrowley
Mon Jul 20, 2009 8:47 pm
my first piston valve (picture and video)

Last post by far_cry
Replies: 22
by far_cry » Mon May 11, 2009 10:19 am
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at last i build a piston valve and he work great
it's 3/4 T copper (or bras !!)
the piston made from wood , sweeper stick :D turn it on a lathe and...

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will i am not that good in the flow thing
but i think is small. try it and change the seat diameter to 12mm~ and if this get more power
22 Replies

13040 Views

Last post by far_cry
Mon Jul 20, 2009 12:49 pm
Teaser pic of my 4inch piston cannon EDIT: cannon is done!

Last post by glass_05
Replies: 37
by glass_05 » Mon Jul 13, 2009 11:39 pm
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Here is just a teaser pic. Once the gun is tested tomorrow I will get some damage pics and a lot more pictures of the gun and some specs of it.

Be...

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cannon is in the showcase!
37 Replies

42167 Views

Last post by glass_05
Mon Jul 20, 2009 12:30 am
My first sprinkler valve electric

Last post by beardie6767
Replies: 10
by beardie6767 » Sat Jul 18, 2009 12:27 am

First post

So I'm just getting into making spudguns, and so far have only made two.
This is my second one, and I tried using an electric valve instead of a...

Last post

Hmm thats a good idea. maybe i'll re-wire some of the circuitry for just 2 battery's. thanks for the tip

i believe i have enough knowledge on piston...

10 Replies

3587 Views

Last post by beardie6767
Sun Jul 19, 2009 9:47 pm
camo sniper

Last post by VH_man
Replies: 9
by ckman » Sat Jul 11, 2009 9:55 pm

First post

This is my new pneumatic sniper one of my new non ghetto guns.
specs:

Chamber: about a foot of 2 inch pvc
main valve: 1 sprinkler valve (modded)...

Last post

Looks sweeeeetttttt.

Only thing is that personally, Id use a hose clamp instead of duct tape. but otherwise looks amazing

9 Replies

3621 Views

Last post by VH_man
Sun Jul 19, 2009 8:13 pm
update(core pictures)BTB pushbutton valve

Last post by boyntonstu
Replies: 23
by far_cry » Mon Jul 13, 2009 6:42 pm
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first of all i want to thanks BTB for this share of this concept.
piloting the piston valve that i build was the hard part, what i seek is a small...

Last post

I am also curious about the flow because the seal diameter seems wider than the val ve body and the air has to pass the restriction.

IOW How does a...
23 Replies

9749 Views

Last post by boyntonstu
Sun Jul 19, 2009 9:04 am
The R.S.P.

Last post by MRR
Replies: 8
by MRR » Sat Jul 18, 2009 12:21 pm

First post

The R ainy S unday P roject

I started this little coax last Sunday. It was raining all day and I was bored.

Data:
Total Length: 89 cm...

Last post

Not a the moment. It's raining here again .
So I decided to take the pilot valve apart to build a better handle.

8 Replies

3879 Views

Last post by MRR
Sun Jul 19, 2009 7:20 am
Piston - Dont Release Air.

Last post by far_cry
Replies: 14
by neeewwww » Sat Jul 18, 2009 4:21 pm

First post

Hi,
I have a problem with my piston. It seals perfectly (Barrel Sealer). But when I open t he BV (Exhaust) it dont seat back, so, all the air goes...

Last post

the seat diameter is almost the same of the piston ,thats is your problem

if you but a pictures of the piston and the seat (where the piston face...

14 Replies

7162 Views

Last post by far_cry
Sun Jul 19, 2009 6:35 am
Old Bessy Sureshot [with a vid]

Last post by AdiabaticManiak
Replies: 20
by AdiabaticManiak » Thu Jul 16, 2009 4:34 am
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Now it´s time again.
It all began with me finding a one way-valve while taking an old compressor apart. I Looked at it, and saw the possibility to...

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I´m glad The gun is found inspiring. It was quite fun building it. Perhaps there will be a mk II. perhaps not at all. It kinda depends on what parts...
20 Replies

12477 Views

Last post by AdiabaticManiak
Sun Jul 19, 2009 6:33 am
LIL BANDIT

Last post by frozebyte
Replies: 6
by FORE!!!! » Sat Jul 18, 2009 9:31 pm

First post

well heres my first mini nothing much,i used a refuelable air horn tank
and attached a mini 1/4 ball valve with the help of epoxy.
the canster is...

Last post

fore you could get better potential out of this if you had a similar blowgun as your other pneumatic to act as a pilot valve :)
Or were you just...

6 Replies

2461 Views

Last post by frozebyte
Sun Jul 19, 2009 5:09 am
Will a pneumatic cylinder keep up?

Last post by POLAND_SPUD
Replies: 6
by inonickname » Thu Jul 16, 2009 4:12 am

First post

I've finally decided on the configuration for my nerf rifle.

Open bolt, magazine fed (no carts), QEV actuated, 400 psi op. pressure, switchable...

Last post

uhmmm I've found one of these ->

you might ask 'wtf is that?!
well it's a 'thingy'.... it has an inbuilt 5 way valve... when pressure is present...

6 Replies

6559 Views

Last post by POLAND_SPUD
Sat Jul 18, 2009 10:41 pm
QEV brand and price?

Last post by inonickname
Replies: 1
by The_Crackerjack_Man » Sat Jul 18, 2009 8:09 pm

First post

So i've been seeing some QEV's that are just squares with the 3 input sections for the barrel, chamber, and blow gun. I was just wondering what kind...

Last post

This is for an Australian supplier:

They are a piston type. I use mine regularly to 300 psi and fairly often to 400, and have not had any issues....

1 Replies

2116 Views

Last post by inonickname
Sat Jul 18, 2009 8:12 pm
.378 cal 400 psi mod

Last post by inonickname
Replies: 13
by inonickname » Wed Jul 15, 2009 4:33 am

First post

Update: Yo, pictures

Modded shock pump, gun and quick disconnect to schrader adapter for filling. Shock pump is wayyy too slow.

Fake silencer....

Last post

did you make that qev?

No, it's a bellpro QEV I ordered online.

By the way, this gun is no more..

13 Replies

4855 Views

Last post by inonickname
Sat Jul 18, 2009 7:51 pm
Co2 Fill Program

Last post by Davidvaini
Replies: 8
by Davidvaini » Mon Jul 13, 2009 10:17 pm

First post

So some of you may remember this chart that me and Ragnarok worked on together. Well he helped me with a lot of equations to put this together.

Well...

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can someone download this new version and tell me if all the features work? I've been running into issues with files being downloaded from spudfiles.

8 Replies

5135 Views

Last post by Davidvaini
Sat Jul 18, 2009 4:58 pm
first piston

Last post by inonickname
Replies: 26
by colty-bear » Thu Jul 16, 2009 2:46 pm
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i just finished my first piston today a copper/brass fittings coaxial
it works beautifully at 150psi but that is not enough pressure for me
if it...

Last post

You will find the stainless steel schrader valves from mcmaster have a metric thread.

Good work on getting it fixed anyways
26 Replies

4983 Views

Last post by inonickname
Fri Jul 17, 2009 11:13 pm
3" porting artillery( i call her jane)

Last post by thedeathofall
Replies: 15
by spudtyrrant » Wed Jul 15, 2009 7:52 pm
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well i was in the neighborhood and decided to make a 75mm beast of an air cannon here are the specs

barrel: 10ft 3 sch 40 approx: 850 ci...

Last post

I believe so mark...

bumper: a plunger with holes cut in it for air flow
15 Replies

6698 Views

Last post by thedeathofall
Fri Jul 17, 2009 2:39 pm
Machined plastic pistons.

Last post by jeepkahn
Replies: 15
by Mitchza89 » Fri Jul 17, 2009 7:15 am
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Hey guys,

I'm looking to go pro with my cannon building. I'd love to get into machining my own pistons but I have no real idea on what plastic to...

Last post

What about urethane.... tough enough for suspension bushings on cars/trucks and prolly could act as it's own sealing face, one piece one meterial...
15 Replies

4950 Views

Last post by jeepkahn
Fri Jul 17, 2009 11:44 am
Soda Cannon Mk1

Last post by frozebyte
Replies: 19
by Cent » Thu Jul 16, 2009 11:00 pm
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This is my First attempt at a Soda Cannon.
After making one or 2 pneumatics i began thinking of ways i could load it without the aid of a...

Last post

Agreed.
Don't you think it wasn't polite of us to have floated off topic?
Sorry, but yep, hope he doesn't mind :D
19 Replies

4465 Views

Last post by frozebyte
Fri Jul 17, 2009 9:44 am
It's been a while...

Last post by potatoflinger
Replies: 7
by potatoflinger » Thu Jul 16, 2009 8:19 pm

First post

...but I'm still building cannons. The inspiration for this one came from my mother actually. A few days ago she walked through my bedroom and...

Last post

GGDT said that at 150 PSI it would shoot just over 600 feet, but I think that was pretty far off because it shot well over 800.

It is pretty heavy,...

7 Replies

1918 Views

Last post by potatoflinger
Fri Jul 17, 2009 8:02 am

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