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

1854176 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

814247 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

1031905 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

1216989 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

496607 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

141956 Views

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

Topics

High pressure 50cal rifle

Last post by Gippeto
Replies: 6
by Pennywise » Fri Oct 06, 2023 5:20 pm

First post

I posted some time ago showcasing a high pressure 'Toolie' style valve I built out of stainless steel. This is the progression of that project. I'm...

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Impressive project and commitment to it. :)

If you want to purchase a barrel, you might try Mike at Tj's. Mike makes a lot of the barrels used in...

6 Replies

24547 Views

Last post by Gippeto
Sat Dec 23, 2023 11:22 am
Valve reliability

Last post by Doc j
Replies: 7
by ToasT » Sat Nov 18, 2023 3:21 am

First post

Reliability can be measured in different ways.
Does it leak at high pressure?
Does it leak at low pressure?
Does it fail to open?
Does it remain...

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I like the last animation .
With the Grub screw restrictor to adjust the air port so then adjust closing time of valve .

7 Replies

47739 Views

Last post by Doc j
Tue Nov 28, 2023 6:41 am
Coke can to 150 meters?

Last post by jackssmirkingrevenge
Replies: 4
by erdos4d » Tue Nov 07, 2023 8:13 pm

First post

Hi Everyone,

I am new here and would like to ask some questions about a build I am attempting soon. I have a 120PSI compressor and I want to make a...

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No worries, that's what this forum is for :) have you tried right-clicking on the GGDT icon and selecting Run as Administrator ? That usually solves...

4 Replies

6747 Views

Last post by jackssmirkingrevenge
Sat Nov 11, 2023 8:15 am
Help making a line launcher

Last post by jackssmirkingrevenge
Replies: 39
by ascientist » Wed Aug 28, 2013 2:48 am
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I'm on the rope rescue team of my local search and rescue. There are situations in which we need to get a rope high in a tree or across a river....

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Get SCH 40 2 inch barrel (36 to 48 inches), 2 to 1-1/2 threaded bushing, a 2 inch coupling and some of these for a fun time.
Check at your local...
39 Replies

158445 Views

Last post by jackssmirkingrevenge
Wed Aug 30, 2023 4:58 am
Kill switch

Last post by jrrdw
Replies: 1
by MtnMaster_303 » Tue Apr 11, 2023 2:02 pm

First post

Need help with wiring up all components!

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Assuming you're using all PVC to build your cannon, wire everything inline except the LED, it will need a separate ground from the battery, that...

1 Replies

11818 Views

Last post by jrrdw
Thu Apr 13, 2023 5:49 am
Hammer valve-->Piston

Last post by mrfoo
Replies: 9
by Pennywise » Thu Mar 02, 2023 6:04 pm

First post

I have wanted a lathe since I understood their capabilities. Late last year I finally bought one. A Monarch 10ee, that happened to be born some 3...

Last post

Sometimes building tools and jigs is half the fun :D

And the other half is doing it again when you realise you've buggered something up :)

9 Replies

33752 Views

Last post by mrfoo
Sat Mar 18, 2023 2:08 pm
Mk IV QEV Popoff. Updated 22 Feb

Last post by jackssmirkingrevenge
Replies: 181
by SubsonicSpud » Sun Apr 12, 2009 5:15 am
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Well guys I decided to muck around with psycix QEV pop off design, and made a slightly ghetto test weapon. It is a 1/4 qev hooked up to a 8bar pop...

Last post

I have a lot more workshop capabilities now, but just not the time.

It seems to be a common theme with many members!

Still, kudos for taking the...
181 Replies

531291 Views

Last post by jackssmirkingrevenge
Wed Jan 11, 2023 2:11 am
French pneumatic mortars in WWI

Last post by jackssmirkingrevenge
Replies: 27
by jackssmirkingrevenge » Fri Mar 25, 2011 2:23 am
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Following this thread , I've done some more research and it seems pneumatic mortars were actually quite commonplace in the trenches of WWI. There are...

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While looking through some archives I was happy to find footage of a Brandt 60mm mortar being demonstrated, as well as a larger caliber model that I...
27 Replies

49782 Views

Last post by jackssmirkingrevenge
Sat Dec 03, 2022 9:14 pm
Blowgun max pressures

Last post by jrrdw
Replies: 6
by shwoseph » Sat Nov 19, 2022 9:33 pm

First post

I recently bought a basic kobalt blowgun to use in conjunction with a modified 1” sprinkler valve in the usual setup.

The thing is, the blowgun has...

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Thanks for clarifying, jrrdw. I hope I’m not annoying you with too many follow up questions, but you seem to really know what you’re talking about....

6 Replies

25860 Views

Last post by jrrdw
Tue Nov 29, 2022 5:56 am
Can you make a pneumatic cannon shoot snowballs?

Last post by shwoseph
Replies: 1
by An0nim » Thu Nov 03, 2022 9:54 am

First post

Winter is closer and closer so I want to spice up the classic snowball fights with a lil bit of scrambling. I've decided that a snowball artillery...

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My feeling is that success would depend on the snow itself. With a dry snow it falls apart in my hands and I can't even make a snowball, but there's...

1 Replies

19238 Views

Last post by shwoseph
Fri Nov 18, 2022 6:41 pm
Hammer->Qev->Piston rifle

Last post by jackssmirkingrevenge
Replies: 3
by Pennywise » Thu Oct 13, 2022 10:49 am

First post

This is my first cannon posting, though i've dabbled in 'spuddery' for many years now. I finally had some time to try a new build design, and I think...

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Eliminating the firing chamber would bring my C:B ratio even closer to '0' than it already is.

I wasn't clear, what I meant was something like...

3 Replies

12985 Views

Last post by jackssmirkingrevenge
Wed Oct 26, 2022 6:47 am
Saftety of PVC Pipe

Last post by jackssmirkingrevenge
Replies: 14
by ReeceEngineering » Sat Dec 14, 2019 11:52 pm

First post

Hello,

Over the years Ive built a handful of cannons. Including some over volumed ones with 10foot barrels. So I have a fair bit of experience with...

Last post

yes it does

14 Replies

34222 Views

Last post by jackssmirkingrevenge
Thu Oct 20, 2022 12:21 pm
Vintage Eclipse Gen1 revolvers etc.

Last post by Moonbogg
Replies: 4
by Solar » Sat Sep 17, 2022 6:43 am

First post

Screenshot_20220917-040943_Chrome~2.jpg Circa 2008 at Oklahoma D-Day.

Screenshot_20220917-035214_Chrome~2.jpg

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I should offer the police my hybrid design with 3 minute rate of fire between shots :lol:

4 Replies

17306 Views

Last post by Moonbogg
Fri Sep 23, 2022 7:07 pm
Valve selection

Last post by getgray
Replies: 10
by getgray » Tue Sep 06, 2022 5:17 pm

First post

I'm working on helping a high school robotics team update their T-shirt cannon. They have been directed to move to metal parts away from PVC. I've...

Last post

First, thanks for the help on this. (and for that rehost of the image).

re chamber volume: I just set it the same as the barrel for a start point....

10 Replies

42226 Views

Last post by getgray
Wed Sep 21, 2022 4:39 pm
3D printed internal valve trial

Last post by mark.f
Replies: 7
by mmk8283 » Wed Aug 17, 2022 10:56 am

First post

Hi Everyone, I'm relatively new here, and previously posed this to the bleacher-reacher thread. I thought it might be more appropriate to make a new...

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Perhaps saturating it with epoxy would be a good idea, or printing a hollow shape that would accept an epoxy pour.

*buys 3d printer*
*uses it to...

7 Replies

24702 Views

Last post by mark.f
Fri Sep 16, 2022 2:58 pm
Access Old Threads?

Last post by mark.f
Replies: 5
by getgray » Wed Sep 07, 2022 10:32 am

First post

As I try to do some research here I get a lot of internal thread links that don't work. I've seen that on other forums where they update their...

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I don't suppose there's a way for PCGUY to automatically update all the broken links?

There's a regular expression out there to do it, but regular...

5 Replies

29699 Views

Last post by mark.f
Fri Sep 16, 2022 2:54 pm
Pulse, QEV vs GGDT

Last post by jackssmirkingrevenge
Replies: 1
by getgray » Thu Sep 08, 2022 4:25 pm

First post

For an off-the shelf valve, I gather the QEV (old threads imply harder to get) and the Pulse dust clearing valves (e.g. those from Asco) are good...

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I typically use generic as a good approximation, for exhaust valves typically opening time is a matter of milliseconds so say 5 ms should give you...

1 Replies

4552 Views

Last post by jackssmirkingrevenge
Fri Sep 16, 2022 10:57 am
A tale of two valves

Last post by getgray
Replies: 7
by iknowmy3tables » Thu Sep 09, 2021 8:03 am

First post

I'll cut to the chase, if you or a friend still use sprinkler valves show them this, I'll try to get a video to prove it if necessary.
I built these...

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Anyone know how to mode a QEV in GGDT?

7 Replies

28754 Views

Last post by getgray
Wed Sep 07, 2022 8:36 pm
A look inside the "bleacher reacher" t-shirt launcher

Last post by mmk8283
Replies: 25
by jackssmirkingrevenge » Wed Nov 11, 2015 11:57 am
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I had a bunch of these to service and though I'd share a look inside:

tsg1.jpg

tsg2.jpg

tsg3.jpg

tsg4.jpg

Standard exhaust valve setup...

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I'm using PLA for the first time around... I'm really just testing the concept at this point. I'm thinking the piston can be printed as well, less...
25 Replies

60719 Views

Last post by mmk8283
Mon Aug 15, 2022 6:50 pm
the air cartridge we wanted

Last post by jackssmirkingrevenge
Replies: 8
by Anatine Duo » Thu Mar 10, 2022 4:27 pm

First post

Joerg's new toy.

I fooled around with this cartridge design decades ago but gave up because it was long before 4500 psi handpumps were available....

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Take a look at this thread , plenty of examples on the same concept.

8 Replies

27934 Views

Last post by jackssmirkingrevenge
Mon Jul 18, 2022 9:58 am
Austro-Hungarian valveless pneumatic mortars of World War I

Last post by jackssmirkingrevenge
Replies: 24
by jackssmirkingrevenge » Mon Apr 09, 2012 1:11 pm
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I had touched on the subject of these devices here , and posted some details of French launchers of the same era here .

The Austro-Hungarian empire...

Last post

If I had a couple of grand to spare...
24 Replies

29348 Views

Last post by jackssmirkingrevenge
Sat Jul 02, 2022 6:12 pm
pneumatic spearguns...

Last post by jackssmirkingrevenge
Replies: 19
by jackssmirkingrevenge » Fri Aug 17, 2012 2:19 pm
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... are actually valveless single stroke captive piston pneumatics!

This was news to me.

No need for an external air supply, push in the spear...

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An example of the Crosman Rocket Spear Sea Gun came up for sale locally, were it a different economic climate I would have contemplated purchasing it...
19 Replies

26022 Views

Last post by jackssmirkingrevenge
Thu Jun 23, 2022 10:09 am
GGDT down?

Last post by jackssmirkingrevenge
Replies: 1
by Daltonultra » Thu Jun 23, 2022 12:52 am

First post

I just tried to download a copy of the old GGDT program, and he page won't load for me. Is the download page gone?

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I've uploaded the files to spudiles and links to the archived pages here

1 Replies

4745 Views

Last post by jackssmirkingrevenge
Thu Jun 23, 2022 6:17 am
Anyone seen this PROOF yet if so or even if Not check it out

Last post by jackssmirkingrevenge
Replies: 13
by Theonepbs » Mon May 02, 2022 2:07 am

First post

I finally am back at least for a few mins to post!!, Doing a lot of stuff!!

anyhow anyone see this yet if so thoughts and opinions

not my design...

Last post

Fascinating device!

From what I can tell, it's a variation on the detent BBMG using a flexible seal as a detent.

I had made several experiments...

13 Replies

48779 Views

Last post by jackssmirkingrevenge
Thu Jun 16, 2022 7:19 am
More Nerf Rival fun

Last post by farcticox1
Replies: 1
by farcticox1 » Tue May 03, 2022 6:16 pm

First post

Running at upto 600fps @150psi, stainless steel barrel and chamber, 1/2 pilot air valve triggered by miniature 3/2 button valve, all hand made except...

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Some build pictures and parts.

Trigger valve, 3/2, is threaded straight into chamber, 1 stainless steel Sch40 tube, and piped to air pilot valve....

1 Replies

14498 Views

Last post by farcticox1
Thu Jun 02, 2022 4:44 am

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