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

926112 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

452239 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

456110 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

635760 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

332149 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

80195 Views

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

Topics

600 psi 3/4" QEV Launcher

Last post by jackssmirkingrevenge
Replies: 53
by Dave_424 » Tue Feb 03, 2009 8:29 am
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Hey, this is my new launcher and here are the specs

Barrel: 15mm copper 1.3m long
Chamber: 22mm copper 1m long (I know they are a little small for...

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Dave's doing some rather nifty stuff with the Stealth.

Post it up Dave... :)

If Dave is in the UK and nifty means 12.01 ft/lbs +, I would...
53 Replies

24771 Views

Last post by jackssmirkingrevenge
Sat Jan 08, 2011 12:32 am
PVC Pipe Warning for Austrailan's

Last post by rna_duelers
Replies: 12
by Butch902 » Wed Jan 05, 2011 3:04 am

First post

I have a warning if your buying your PVC pipe from Bunnings . DO NOT BUY THE PIPE THERE it when BOOM!!!!!! on me at 80 psi after 100 or so shots that...

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I've experienced an explosion or 3 with PVC,Pressure pipe and DWV.

Safety pressure ratings are there for a reason,Follow them!

DWV is designed to...

12 Replies

4757 Views

Last post by rna_duelers
Fri Jan 07, 2011 7:13 pm
mini pen gun

Last post by linuxexorcist
Replies: 9
by ilovefire » Thu Jan 06, 2011 8:47 pm

First post

had a couple bits of small pipe and thought i would try make a mini pen gun
barrel=75mm x 2.5mm
camber=4.5mm x 70mm
full length=90mm
piston= solid...

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You could do it either way, really, although, you are right Mr Potato Head, it could be easier to fill that way. you might have to drill out the nib...

9 Replies

4330 Views

Last post by linuxexorcist
Fri Jan 07, 2011 10:47 am
Airsoft barrel

Last post by LovableAirGuns
Replies: 13
by qwert123 » Tue Dec 28, 2010 5:15 pm

First post

hello spudfiles!
I have made 3 air guns, they all use a .5 barrel. i was wondering if anyone knows of a good 6mm (inner diameter) tubing or pipe,...

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hahaha could use a straw, thought i just had to put it out there 8)

13 Replies

3817 Views

Last post by LovableAirGuns
Fri Jan 07, 2011 10:13 am
Filling through a blow gun?

Last post by Lockednloaded
Replies: 3
by Mr. Potato Head » Thu Jan 06, 2011 7:14 pm

First post

I was thinking about how I would fill my copper coaxial and figured that a T fitting would be required, 1 port into the gun, 1 port for the blow gun,...

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teflon probably won't seal that gap, try epoxy. I recommend you get a proper 1/8 NPT schrader, it will screw directly into the blowgun, and you can...

3 Replies

1516 Views

Last post by Lockednloaded
Thu Jan 06, 2011 9:59 pm
Semi auto. Please check over parts before i order :P

Last post by killerbanjo
Replies: 16
by killerbanjo » Wed Jan 05, 2011 8:56 pm
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Hey all just wanted you to check over some parts for me before i order them.

I am using the semi design for a airsoft gun

But instead of having...

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Your right i sure do... Thats how i drew it earlyer but then i got stuped and redid it like it is now. Silly me :P
16 Replies

6359 Views

Last post by killerbanjo
Thu Jan 06, 2011 5:41 pm
Need advice- semi auto

Last post by evilvet
Replies: 13
by Butch902 » Tue Jan 04, 2011 9:07 am

First post

Could someone give me some advice on what valve I would need to make my air gun semi auto?

I have a semi auto loading system just need a good valve...

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Isn't there a general prohibition on feeding trolls?

i can't get a paintball tank supply because to get a paintball tank filled you need a gun...

13 Replies

5970 Views

Last post by evilvet
Wed Jan 05, 2011 5:16 am
Normaly open 3 way valves in the UK?

Last post by Slugfoot
Replies: 2
by killerbanjo » Tue Jan 04, 2011 9:32 pm

First post

Ive looks lots of places... any one know where i can get a normaly open 3 way valve in england?

Cheers

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You could try Airlines .

I was thinking about getting one of these:-

Of course, there are others there that you may be interested in.

2 Replies

966 Views

Last post by Slugfoot
Wed Jan 05, 2011 1:39 am
power comparisons

Last post by Technician1002
Replies: 6
by Lockednloaded » Tue Jan 04, 2011 7:33 pm

First post

I have always wondered if different brands of valves we use yield better performance, but pretty soon, I'll be able to test it.

I have a 3/4 detrol...

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so basically I just turn on the mic, record the shot, and then I can calculate the FPS?

You can use a microphone or wire a plastic barrel to...

6 Replies

1321 Views

Last post by Technician1002
Wed Jan 05, 2011 1:39 am
belt fed cartidges

Last post by jackssmirkingrevenge
Replies: 24
by Lockednloaded » Fri Dec 31, 2010 7:44 pm
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I would love to have a cartridge firing semi auto gun, but with my tools, making huge amounts of cartridges takes far too long. I cant risk losing...

Last post

Is there no mechanical way to rotate the barrels?

um...
24 Replies

8806 Views

Last post by jackssmirkingrevenge
Wed Jan 05, 2011 1:11 am
2 Liter bottle burst pressure

Last post by saefroch
Replies: 32
by skyjive » Sat Dec 25, 2010 1:31 am
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So as a sort of fringe benefit of having spudding stuff laying around, I realized I can carbonate my own beverages with my CO2 bottle. My family goes...

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You may be better off just dropping some of those dry-ice turds in an open bottle of cold water. I've tried it and it works, but I don't know how...
32 Replies

21407 Views

Last post by saefroch
Tue Jan 04, 2011 7:21 pm
Shock Pumps

Last post by Mr. Potato Head
Replies: 11
by Mr. Potato Head » Sat Jan 01, 2011 5:38 pm

First post

I'm planing on building a coaxial copper canon and was wondering what is the max recommended volume that can be filled to 400 psi with a shock pump....

Last post

@Bipyro: I'm relived to here that even 3 times my volume is manageable with a shock pump, although highly unpleasant.

@saefroch: I was thinking just...

11 Replies

3529 Views

Last post by Mr. Potato Head
Tue Jan 04, 2011 12:05 am
Piston Valves Explained & How to Make

Last post by Technician1002
Replies: 1
by Butch902 » Mon Jan 03, 2011 9:21 am

First post

Piston Valves Explained & How to Make

I have been looking on Spudfiles for a little time now and I never really understood how piston valves worked...

Last post

He covers the ratio of area of the 2 inch seal on the barrel and the 3 inch piston in the pilot, but he did not elaborate on what the pilot pressure...

1 Replies

13149 Views

Last post by Technician1002
Mon Jan 03, 2011 1:14 pm
air chamber help

Last post by Technician1002
Replies: 7
by Major Collins » Sun Jan 02, 2011 7:39 am

First post

OK today i bough a Primus 0.34 liter gas bottle , i was wondering if it i could arc weld a steel half inch fitting on . ive already drilled through...

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Just an FYI, the pressure relief valve on those is supposed to remain closed to slightly above 300 PSI so they don't vent and cause a fire hazard on...

7 Replies

1980 Views

Last post by Technician1002
Mon Jan 03, 2011 12:42 am
3/4 QEV gun

Last post by superspud09
Replies: 4
by superspud09 » Sun Jan 02, 2011 9:07 pm

First post

This is my first all metal gun and it is a beast. So far i have only taken it up to 160psi due to the compressors limit but i am looking for a cheap...

Last post

Barrel is 42 of type L copper also have a 3/4 by 32 barrel

4 Replies

4545 Views

Last post by superspud09
Sun Jan 02, 2011 9:49 pm
[New here] First pneumatic gun to start the SpudLife

Last post by metalmeltr
Replies: 19
by Pete » Mon Dec 27, 2010 1:00 pm
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Hi!
I'm new to this forum and I want to introduce myself. I'm 19 years old and I'm from Germany. I experienced the first pneumatic guns at youtube...

Last post

What about a sanding drum on a Dremel? Too inprecise?
19 Replies

6473 Views

Last post by metalmeltr
Sun Jan 02, 2011 7:31 pm
semi-auto design

Last post by ilovefire
Replies: 10
by ilovefire » Sun Dec 26, 2010 1:24 am

First post

this is a semi-auto design i thought of, not sure if its original or not but hee it is, dont think i will be able to make it because i dont have a...

Last post

the unit:
that is pretty much what i was thinking, also you wouldnt have the flow restrictions that would come with having the air go though the...

10 Replies

2540 Views

Last post by ilovefire
Tue Dec 28, 2010 3:08 am
Shotgun prototype

Last post by ramses
Replies: 18
by pactin9 » Fri Dec 24, 2010 8:32 am
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To begin, my project was about halfway done before I ran the specs through GGDT (which is giving me numbers that I am not satisfied with). I wanted...

Last post

You could use a QEV.
18 Replies

4207 Views

Last post by ramses
Sun Dec 26, 2010 11:38 pm
Pneumatic Starch Accelerator

Last post by metalmeltr
Replies: 12
by mexthatcan » Fri Jun 06, 2008 6:15 pm

First post

I made this one a few years ago, just never got around to posting it. (my first pneumatic)

Over and Under design
Chamber - 2 2 x36 inch chambers...

Last post

Welcome to the forums radnac, I hope you enjoy the wealth of information there is here that everyone has to offer. However it would be in your best...

12 Replies

5586 Views

Last post by metalmeltr
Sat Dec 25, 2010 5:36 pm
Homemade HP pump

Last post by The_Guerilla_Guy
Replies: 9
by The_Guerilla_Guy » Fri Dec 24, 2010 5:13 pm

First post

Hi guys,

After browsing the Forum for topics about homemade pumps, I came up with the idea of a pump that could some higher pressures, because a...

Last post

I know it has some mistakes in it, but I kinda like the idea. I'll work on it some more in the future. I'll update the post when I have made a nice...

9 Replies

2799 Views

Last post by The_Guerilla_Guy
Sat Dec 25, 2010 10:43 am
very simple first attempt at a bb shooter

Last post by Technician1002
Replies: 17
by mastakilla » Wed Dec 22, 2010 12:00 pm
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Hello, first of all sorry for my bad english but I'm not american...I've come across this site looking for parts for my airsoft svd dragunov (which I...

Last post

Is that your size? *Chuckle*
:)
17 Replies

6463 Views

Last post by Technician1002
Thu Dec 23, 2010 6:37 pm
Vex robotic cannon

Last post by metalmeltr
Replies: 9
by metalmeltr » Wed Dec 22, 2010 10:58 am

First post

mechanical workings

firing
too bad it's just one shot

Last post

The bead weld failed in the HAZ of the weld, the weld itself did not fail, there is a small amount of the base material from the failed piece still...

9 Replies

2176 Views

Last post by metalmeltr
Thu Dec 23, 2010 9:45 am
piston valve/ blow gun actuation

Last post by jackssmirkingrevenge
Replies: 5
by Major Collins » Sat Dec 18, 2010 2:37 am

First post

What type of piston is needed to be actuated with a blow gun ?... i have one but i don,t know why it works so well.

eg light , heavy , hollow ,...

Last post

I want to do a series of animations for the Wiki illustrating the various factors affecting performance, I'll try and do them tonight.

5 Replies

2292 Views

Last post by jackssmirkingrevenge
Thu Dec 23, 2010 7:23 am
GGDT interpret performance?

Last post by metalmeltr
Replies: 23
by metalmeltr » Tue Dec 21, 2010 11:05 am
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This is the result of a recent attempt of trying to model my next marshmallow gun.

chamber 1x6
barrel 1/2 PVC-length between 30-36-not yet...

Last post

Rethinking this design closer to bullpup, i am going to have to buy the valve and compressor to start mocking this thing up.
23 Replies

6013 Views

Last post by metalmeltr
Thu Dec 23, 2010 1:25 am
Anybody use a pnuematic toggle?

Last post by ramses
Replies: 6
by D_Hall » Tue Dec 21, 2010 9:45 pm

First post

I was looking at McMaster part number 3662T24. Hopefully this pic is good (if not, I'll try to find another and edit the post later)....

...Looks...

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I noticed you linked to a manual return valve. Were you aware of this? They do make spring return valves. you know, in case you wanted semi auto or...

6 Replies

1380 Views

Last post by ramses
Wed Dec 22, 2010 1:01 pm

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