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

1123905 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

551920 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

820957 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

966750 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

374729 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

92309 Views

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

Topics

semi auto help

Last post by Crna Legija
Replies: 17
by beastmode986 » Mon Jun 18, 2012 7:41 pm
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ok so for my next project i want to make a semi auto.I ordered my qev and it is stainless steel :), Im expecting it to arrive next week. Now im still...

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Not in the centre the very outer edge, and you need a spring to push the piston forward at rest.
17 Replies

4940 Views

Last post by Crna Legija
Mon Jul 09, 2012 5:50 am
Something Intresting

Last post by HunterT
Replies: 4
by sagthegreat » Wed Jul 04, 2012 10:38 am

First post

I saw this while I was surfing youtube. It appears to be a bolt action aaa battery launcher. that has cartriges.

Last post

Anxiously awaiting a prototype!

4 Replies

2437 Views

Last post by HunterT
Thu Jul 05, 2012 5:15 am
Piston Travel Distance in a Tee Valve

Last post by POLAND_SPUD
Replies: 10
by Velocity » Tue Jul 03, 2012 11:12 pm

First post

I've been thinking about piston travel distance lately. The old rule is that the piston should travel back one quarter of the diameter of the exit...

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Due to a spouse who has a vote, most of the cosmetics will remain stock. Paint the barrels pink - she'll say they look cute :D

10 Replies

7792 Views

Last post by POLAND_SPUD
Wed Jul 04, 2012 11:54 am
Looking for a hammer type mechanism

Last post by FighterAce
Replies: 13
by FighterAce » Fri Jun 29, 2012 12:14 pm

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I used to have a comfy 80mm of space behind my schrader pilot valve so fitting a striker mechanism was not a problem... but after a redesign and...

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why not just open it with the rod movement no spring no need to a respect bar.

I already answered you...

I forgot to mention its supposed to be...

13 Replies

5650 Views

Last post by FighterAce
Sun Jul 01, 2012 6:43 am
Calculating flow and valve sizes

Last post by Live1nce
Replies: 17
by Live1nce » Fri Jun 22, 2012 9:15 pm
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Hey guys, I used spudfiles quite a bit years ago, but lost my password to the account, so I just registered a new one. :? Now that I have some more...

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Gotcha! thanks for clearing that up guys. I knew my calculations seemed off. I re-ran the calculations, and I think ill give it a shot and see how...
17 Replies

6074 Views

Last post by Live1nce
Sat Jun 30, 2012 8:46 pm
I too has semi-auto

Last post by palanit
Replies: 67
by jor2daje » Wed May 19, 2010 8:15 pm
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Hey guys, been a while since Ive posted on here, Ive been playing with my shopsmith making pens and such, but I while I was browsing ebay for pen...

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What are the dimensions of your air cylinder and I didn't understand the mod that you did to it. I would really appreciate it of you could help me
67 Replies

31985 Views

Last post by palanit
Sat Jun 30, 2012 5:22 pm
piston help

Last post by sgort87
Replies: 14
by boyce123 » Wed Jun 27, 2012 11:24 pm

First post

I made a 2 piston valve pneumatic this morning and have some issues with piston return. The valve is just a basic 2 T design, with a sealing guide...

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you can machine hdpe on a wood lathe

I gave up that fight a LONG time ago. That stuff has a mind of its own on a wood lathe. Did you know HDPE rod...

14 Replies

5011 Views

Last post by sgort87
Sat Jun 30, 2012 1:56 pm
PAC QEV first cannon

Last post by Chinou
Replies: 2
by Chinou » Sat Jun 30, 2012 9:52 am

First post

Hello , This is my first post and i'm french with a bad English :D .
I love your achievement and I find it interesting that the language barrier...

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Thank you for welcome :)
It is true but this pac begins to be old ( errors in the sentence ? ). In addition i have a compressor of refrigerator for...

2 Replies

1391 Views

Last post by Chinou
Sat Jun 30, 2012 12:24 pm
Mag Air 1180

Last post by jackssmirkingrevenge
Replies: 8
by jackssmirkingrevenge » Fri Jun 29, 2012 9:38 am

First post

Now this I hadn't seen before.

Pretty impressive specs as can be expected from a high pressure big bore:

Removable bolt design, and oh...

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That's where I found it, the reappearance of the archery thread prompted some google meanderings :D

8 Replies

5616 Views

Last post by jackssmirkingrevenge
Sat Jun 30, 2012 3:16 am
Anyone able to help me build Cobblers marshmellow gun-Piston

Last post by jackssmirkingrevenge
Replies: 6
by jfullr97 » Thu Jun 07, 2012 1:01 am

First post

I have recently constructed cobblers marshmallow gun, COPIED EVERYTHING AND AIR WENT RIGHT OUT THE BARREL!, got me angry lol. So I am wondering if...

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Then let someone else make it for you, for less than $20 posted!

6 Replies

2586 Views

Last post by jackssmirkingrevenge
Fri Jun 29, 2012 3:10 am
I took your advice guys

Last post by Spud Destruction
Replies: 5
by Spud Destruction » Mon Jun 25, 2012 8:24 pm

First post

Well we filmed 4 episodes this weekend, and all 4 had no potatoes involved, The one i'm linking to is a tennis ball video, against a racked ;) The...

Last post

Thanks Jacks the next episode will be a normal one, but good destruction from a potato, then the SABOT episode ;) that one came out good... Who likes...

5 Replies

1955 Views

Last post by Spud Destruction
Thu Jun 28, 2012 8:15 pm
400psi pumping effort

Last post by al-xg
Replies: 13
by josephlys » Tue Jun 26, 2012 12:39 pm

First post

If I were to use one of those mountain bike shock pumps to pump up my air-chamber. How much effort would it take to pump it up to 300-400psi? Do I...

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A decent track pump for bicycles can produce 400psi (or slightly more) as long as it is made from half decent materials (or if parts can be replaced...

13 Replies

13017 Views

Last post by al-xg
Thu Jun 28, 2012 12:14 pm
Piston not retreiving

Last post by Crna Legija
Replies: 4
by jfullr97 » Sun Jun 24, 2012 7:13 pm

First post

Hey guys I finally made my pneumatic barrel sealing piston valve air gun but when I release the air in the back the piston does not come back, I...

Last post

I think it might be to snug of a fit.

Probably the opposite that or the pilot valve it too small.

4 Replies

1475 Views

Last post by Crna Legija
Mon Jun 25, 2012 2:09 am
blowgun or sprinkler valve

Last post by waza8u
Replies: 7
by boyce123 » Fri Jun 22, 2012 6:41 pm

First post

i've been thinking of making a large piston pnuematic. would a blow gun have high enough flow for a decently efficient pilot release. If there...

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thanks for all the info, i'll see what i can come up with at my local hardware store tomarrow (i was hoping to suppliment fourth of july...

7 Replies

2601 Views

Last post by waza8u
Sat Jun 23, 2012 5:26 pm
Rifle airgun(update+video)

Last post by AircannonSweden
Replies: 5
by AircannonSweden » Sun May 13, 2012 3:21 am

First post

I updgraded the rifle for about 3 days ago! I have put on a smaller barrel and now i shoot .22 long shell-casings, they go pretty far, about about...

Last post

Update+video,look @ the top

5 Replies

3753 Views

Last post by AircannonSweden
Sat Jun 23, 2012 7:43 am
Modified Paintball gun to air rifle/cannon

Last post by Judge_Jon
Replies: 21
by Judge_Jon » Thu Aug 11, 2011 1:32 am
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Anyways I'm not free for a while but i did mock up a pic showing the very basics of what i want to build and what it will look like.

Sorry as...

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I got the issue where the Co2 tank goes into the paintball gun fixed. Just ordered direct replacements. It was more expensive but I didn't have to...
21 Replies

14993 Views

Last post by Judge_Jon
Fri Jun 22, 2012 8:51 pm
Barrel Sealing Coax Valve Problems

Last post by webgeek
Replies: 13
by webgeek » Thu Jun 21, 2012 8:33 pm

First post

Hi all; I'm desperate for a quick fix. I'm exhibiting something kinda like this at the Kansas City Maker Fair this year:

I did this last year...

Last post

It's actually fired remote trigger and it's mounted vertically with me handling both the loading and the charging. I also have smaller pneumatic guns...

13 Replies

3439 Views

Last post by webgeek
Fri Jun 22, 2012 2:30 pm
My solenoid valve.

Last post by Mattwarne
Replies: 30
by 8tonsemi » Tue Jun 05, 2012 12:54 pm
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I was wondering do i have to cap off the whole in the second picture it's half inch hole.

Last post

Nice gun there
Hope it all works out well
30 Replies

8601 Views

Last post by Mattwarne
Fri Jun 22, 2012 12:15 am
Idea for metal piston valve.

Last post by 8tonsemi
Replies: 31
by 8tonsemi » Wed Jun 20, 2012 4:22 pm
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Has anyone made an metal piston valve spud gun that uses a spool valve like on piston hybrids. Because it would work great.

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Thank you for all the help. I'll lay off the hybrid discussions for a couple of years and search around the forum some more to find information so it...
31 Replies

6948 Views

Last post by 8tonsemi
Thu Jun 21, 2012 9:53 pm
Pilot valve help for piston guns

Last post by whoa044
Replies: 23
by Engineererrrr » Tue Feb 28, 2012 4:03 pm
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I was just wondering about pilot valves and how much air can they pilot for there size. Im calling on anyones great expertise to explain the required...

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I use a 1/4 ball valve to pilot my 3/4 valve. In all honesty, I thought I had to go out and get a bigger pilot valve, but I ended up super gluing...
23 Replies

6391 Views

Last post by whoa044
Thu Jun 21, 2012 10:46 am
Concerns: QEV And Blowgun

Last post by POLAND_SPUD
Replies: 24
by sagthegreat » Thu May 17, 2012 7:31 pm
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I am on a limited budget for my first major project to be posted on the fourms, my budget is $25 for the 1/2 inch QEV and the blowgun

Concerns:

How...

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In that case, you can leave your diaphragm intact.
lol :D
24 Replies

10299 Views

Last post by POLAND_SPUD
Wed Jun 20, 2012 9:56 am
Potato stuck inside

Last post by mattyzip77
Replies: 15
by PaperNinja » Mon Jun 18, 2012 6:03 am
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A year or two ago I had made a (very) simple pneumatic piston valve cannon, you can see it by googling spudzooka My problem is that whenever I try to...

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Um how has the spud not rotted away to nothing yet?? I have a funny feeling that the potato isnt your problem lol....
15 Replies

4797 Views

Last post by mattyzip77
Tue Jun 19, 2012 8:47 pm
Sprinkler valve cannon amr-1

Last post by beastmode986
Replies: 3
by beastmode986 » Mon Jun 18, 2012 1:52 pm

First post

AMR-1 anti material rifle 1

well im posting a air cannon finally. video will be up soon but for now here is a pic but first ill give some details....

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thanks! yeah i knew flow would be restricted a bit but it is still very powerful. on my compressor (120 psi 3hp 5 gallon) i can get around 10 fills...

3 Replies

2464 Views

Last post by beastmode986
Mon Jun 18, 2012 2:40 pm
spudgun tank

Last post by beastmode986
Replies: 22
by mr.potatohead » Fri Jun 01, 2012 4:06 pm
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would it be safe to use a tank from a mapp gass torch but the same tank that i would refill with air

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i have done it i just emptied a oxygen tank drilled it out and tapped the threads in the hole i drilled for 1/4 in threading screwed in a 1/4''...
22 Replies

8198 Views

Last post by beastmode986
Mon Jun 18, 2012 2:00 pm
CO2 cartridge rifle

Last post by jackssmirkingrevenge
Replies: 16
by stuffbuilder » Mon May 28, 2012 9:38 pm
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Here's my latest project. Its an air rifle with a 4 foot long 3/4 inch barrel made to shoot spent 12 gram CO2 cartridges. I carved the stock and grip...

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If you cut off the pointy bit and weight the roundy bit with solder, there won't be any need for fins ;)
16 Replies

7231 Views

Last post by jackssmirkingrevenge
Mon Jun 18, 2012 1:45 am

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