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

1202299 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

605207 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...

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great job everyone
64 Replies

858079 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

1021133 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

392710 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

100100 Views

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

Topics

my new cannon

Last post by Lentamentalisk
Replies: 31
by unisonmind » Sat Feb 10, 2007 1:00 am
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so this is try #2 with a pneumatic . the camber is a welding tank,a 3/4 Q.E.V. , a blowgun for the pilot and some ball valves for safety.i only got...

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search quick exhaust valve they are the ones that look like the silvery gizmo

and thank you very much for bumping this thread back into life......
31 Replies

14639 Views

Last post by Lentamentalisk
Sat Mar 22, 2008 4:13 pm
Surface Area and Force Questions

Last post by jimmy101
Replies: 6
by Flash » Thu Mar 20, 2008 7:38 pm

First post

Okay, if you've seen my last two topics, you'll have noticed that I need to brush up on some physics and clear some of my misconceptions. So I need...

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So basically, only the flat surfaces facing the direction it's moving are the only forces that contribute force ? And what do you mean by...

6 Replies

2330 Views

Last post by jimmy101
Sat Mar 22, 2008 11:11 am
high pressure sawn off shotgun!!

Last post by Ragnarok
Replies: 19
by spudthug » Tue May 22, 2007 8:29 pm
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well this is my ugly sawn off shotgun..look later in the posit for upgrades and things i am going to do....ok on the matter of this gun. if u couldnt...

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Um, because I felt like it, if you don't want to read a year old topic, don't click the link.
Not a great excuse - links are clicked because we are...
19 Replies

9523 Views

Last post by Ragnarok
Sat Mar 22, 2008 5:56 am
Homemade Multi-Stroke Pneumatic 0.32 cal. Airgun

Last post by jackssmirkingrevenge
Replies: 4
by mark.f » Fri Mar 21, 2008 2:28 pm

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I know I'll get a lot of hootin' from Jack and others about how I should go PCP if I want to make a homemade airgun, (after all, that was what the...

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The Parker-Hale Dragon was a single stroke pneumatic that could develop the full UK-limit 12 ft/lbs of muzzle energy, so you're not neccesarily...

4 Replies

3819 Views

Last post by jackssmirkingrevenge
Sat Mar 22, 2008 3:15 am
2" piston gun with paint job

Last post by th3p0p0
Replies: 7
by th3p0p0 » Fri Mar 21, 2008 8:57 pm

First post

ok this gun took way to long to post iv had it done for over 2 months but its finally done. its a 2 T with 1 1/2 porting,a camo paint job that i did...

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well i all ready put a potato through the roof so will see :wink: and for the camo i used pine branch's

7 Replies

1903 Views

Last post by th3p0p0
Fri Mar 21, 2008 10:52 pm
Double tank cannon

Last post by brplatz
Replies: 10
by brplatz » Fri Mar 21, 2008 12:35 am

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This is an updated version of an old gun. not sure how far it shoots but two tanks at 100 psi. each 2 by 19 and a 1 solenoid valve. should shoot...

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ok so it was full and my friend dropped it on the lower tank and the lower tank came right off with a loud BAM! I think i will just make a new one...

10 Replies

4173 Views

Last post by brplatz
Fri Mar 21, 2008 6:40 pm
I screwed up! :-(

Last post by Carlman
Replies: 16
by BrianMigs » Thu Mar 20, 2008 5:10 pm
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I just drilled a hole through the double layer of my 3 chamber and endcap, except it is just a weee bit too big to screw in the quick disconnect I...

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JSR would have have something to say about this one :D

My favourite passtime (and, some would say, modus operandi :roll: ), right after Tinkering...
16 Replies

5093 Views

Last post by Carlman
Fri Mar 21, 2008 6:13 am
joining the copper piston gun bandwagon (updated and upgrade

Last post by jackssmirkingrevenge
Replies: 20
by jook13 » Tue Mar 11, 2008 12:51 am
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EDIT: I changed a lot of things on this gun. a list of changes:
1. Got Rid of the dead space.
2. redid the piston and trigger assembly so I can...

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4. Added a homemade adjustable sight. I saw the idea somewhere on this sight but dont remember who posted it, wish I could give em credit, works...
20 Replies

8105 Views

Last post by jackssmirkingrevenge
Fri Mar 21, 2008 4:38 am
Easiest coax piston design?

Last post by jackssmirkingrevenge
Replies: 21
by Procrastonator » Wed Mar 19, 2008 9:09 am
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I looked at a lot of designs and found piston valves to be very complex (i have only before built basic combustion or ball valve pneumatic guns) i...

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however paying for easy women spells trouble in the form of crabs and a bad case of the clap!

as for narcotics....well ask yourself, is the world...
21 Replies

10629 Views

Last post by jackssmirkingrevenge
Fri Mar 21, 2008 4:15 am
High pressure valve

Last post by Hydra
Replies: 21
by Dirigo » Wed Mar 19, 2008 9:40 pm
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I am in the planning stage of a new cannon. I want it to be built of steel, with a 4 x14 air chamber and a 2 x 96 barrel. I plan on using the gun at...

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Get a triggered burst disk. look it up on the wiki, they use a needle to pop it.
Otherwise use a piston valve like everyone else said. Make it out of...
21 Replies

5181 Views

Last post by Hydra
Fri Mar 21, 2008 2:59 am
Large-bore Valve Options

Last post by fireman565
Replies: 19
by Zippster » Wed Mar 19, 2008 1:30 pm
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Disclaimer: I realize that I've made a thread in the past on the same topic, but with no desire to reanimate a long-dead thread, I've started this....

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These I believe, are about average price... :cry:
19 Replies

5742 Views

Last post by fireman565
Fri Mar 21, 2008 12:24 am
4" Piston Valve

Last post by Ragnarok
Replies: 29
by Novacastrian » Mon Mar 17, 2008 4:51 am
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This is a creation that i like to call Boogaloo , It means fast in some giberish.(thanks Gipetto)
:D
That's right, a 4 inch power house with 33.7mm...

Last post

Not quite on that one RNA...

What would Joanna say?
If you really want an answer, I'm told by a very reliable source I happen to have, and I...
29 Replies

7206 Views

Last post by Ragnarok
Thu Mar 20, 2008 10:22 pm
Quick advanced question about a psi question

Last post by psycix
Replies: 23
by dapallox1 » Tue Mar 18, 2008 11:20 pm
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If I had a 22 gallon tank, and hydrogen compressed to 60 psi, how long would 5 liters/min flow out of the tank at 10psi? Sorry if you can't...

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lol, liquid hydrogen freezes at Freezing Point @ 1 atm: -434.5°F (-259.2°C, 14oK)

Well, you all have answered a lot of my questions. Thanks a...
23 Replies

14285 Views

Last post by psycix
Thu Mar 20, 2008 9:38 am
Mini Breech loading Coaxial build & ideas

Last post by kablooie
Replies: 6
by kablooie » Mon Mar 17, 2008 11:17 pm

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This design is nothing new, although I have not seen a mini verion of it, it is a mini breech loading coaxial design. The cannon breech loads through...

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I'll be sure to tighten everything before I sleeve that 1/2 pipe. Anyone else have any advice? Some of the epoxying worries me.

6 Replies

2876 Views

Last post by kablooie
Wed Mar 19, 2008 11:36 pm
Guess that valve???air chamber???

Last post by Novacastrian
Replies: 5
by huntinggamo » Wed Mar 19, 2008 10:07 am

First post

so take a look at this and tell me what kind of valve you think it is?

also what are they using for an air chamber? is that a fire extinguisher? if...

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This mortar has been talked about before, i can't seem to find the thread though.

@ant, glad to see you like my avatar :roll: :P :D
The reason i...

5 Replies

2195 Views

Last post by Novacastrian
Wed Mar 19, 2008 8:20 pm
Blowgun on mini steel coaxial.

Last post by Counterstriker
Replies: 36
by Counterstriker » Sun Mar 16, 2008 2:48 pm
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I went to a local home depot today to get the basic material for my upcoming project, I got a 9 inch long 3/4 galvanized steel nipple for the...

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With a barrel this short it will stay stable itself.

But I only made it short for the picture. But I might keep it that small!
36 Replies

8966 Views

Last post by Counterstriker
Wed Mar 19, 2008 5:55 pm
Spring powered ball valve.

Last post by sniper hero
Replies: 29
by Jack_Hogg » Sun Mar 16, 2008 8:03 am
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I've want to make a pneumatic sniper rifle, so i've been brainstorming about the Spring powered ball valve . I want to ask you guys if this is a good...

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i'm making a gun with the same design but I thought to place the piston were now the elbow is that forms a V
it decreases the chamber volume but...
29 Replies

6763 Views

Last post by sniper hero
Wed Mar 19, 2008 10:36 am
help needed with coaxial

Last post by Procrastonator
Replies: 17
by Cosmic Muffin » Thu Mar 06, 2008 5:29 am
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hi guys i made a coaxial from 15mm copper pipe with a 10mm copper pipe barrel i have a piston that fits snugly inside the 15mm pipe. the gun is...

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Just use a bigger pilot valve. i couldnt get mine to fire until i used a ball valve.
17 Replies

3882 Views

Last post by Procrastonator
Wed Mar 19, 2008 8:17 am
The Micro-MarbleGun

Last post by VH_man
Replies: 15
by VH_man » Mon Mar 17, 2008 6:44 pm
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Well, In my recent dismay of having my Beloved Barrett 14mm Break, i decided i wanted to do something different..... SO

I took spare parts,...

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I dont know, something about micro sized guns has me theese days.

Im working currently on a pocket-sized .177 cal BB gun......... and putting my...
15 Replies

5345 Views

Last post by VH_man
Wed Mar 19, 2008 7:59 am
Flow Efficiency Questions- Thanks

Last post by Daegurth
Replies: 4
by BrianMigs » Tue Mar 18, 2008 3:34 pm

First post

Ever since I had built my first pneumatic, my friend Alex has been begging for me to make him one. Since I started on a new piston project, I gave in...

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i'd sell him your old one anyway, and use what you learnt in the construction of that to build a better one second time around. it'll teach him to...

4 Replies

1975 Views

Last post by Daegurth
Wed Mar 19, 2008 7:41 am
Halp pizlo quick (crono equations)

Last post by enginerd
Replies: 12
by pizlo » Sun Mar 16, 2008 7:15 pm

First post

So after some fruitless searching I need to know the equations to get FPS from the distance and time traveling of a projectile. I normally look down...

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well the loop i was thinking of was you need the reynolds number to calculate the Cd of the object, and you need velocity for the reynolds number and...

12 Replies

4408 Views

Last post by enginerd
Tue Mar 18, 2008 10:12 pm
Piston Tee questions! :-) Yes, yet again

Last post by Carlman
Replies: 9
by BrianMigs » Tue Mar 18, 2008 3:23 pm

First post

I just stopped at my local Palermo plumbing supply, and let me first say, wow, a lot easier than trying to find stuff at Lowe's! :-)

My new project...

Last post

you could use your blowgun to pilot your sprinkler valve which in turn pilots your piston..

9 Replies

3213 Views

Last post by Carlman
Tue Mar 18, 2008 6:02 pm
Little help for a semi noob

Last post by Pilgrimman
Replies: 24
by enginerd » Mon Mar 17, 2008 6:03 pm
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Ok to start out i am not an idiot i am a mechanical engineer and know more about some of these things than you guys do i just choose not to put the...

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Well, I was about to reply angrily, but enginerd seems more contrite in his last post.

Anyway, for your purposes, a large QEV (Quick Exhaust Valve...
24 Replies

6604 Views

Last post by Pilgrimman
Tue Mar 18, 2008 4:55 pm
A new type of valve

Last post by Hubb
Replies: 3
by Hubb » Tue Mar 18, 2008 12:24 am

First post

Okay, so I have thought, and drew this up. It is, basically, a combination of several types of valves I've gathered from this site and Nerfhaven....

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The biggest problem I see with this design is the force needed to open the barrel valve. Once it is open, however, it should stay open. The pull rod,...

3 Replies

1640 Views

Last post by Hubb
Tue Mar 18, 2008 4:48 pm
homemade pump questions

Last post by lockmanslammin
Replies: 13
by bigbob12345 » Fri Jan 11, 2008 11:01 pm

First post

I know there have been lots of topics about this lately and you all are probably sick of it but I have a couple questions that the other topics didnt...

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I can say I have taken my brass quick connect to 300PSI and it hasn't failed yet. But, If you look in Mcmastercarr if my memory serves me correct,...

13 Replies

2401 Views

Last post by lockmanslammin
Tue Mar 18, 2008 11:23 am

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