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

1125316 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...

Last post

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

552438 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

821330 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

967226 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

374982 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

92437 Views

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

Topics

Pumpkin Cannon Complete Success

Last post by SDdan
Replies: 26
by SDdan » Wed Oct 28, 2009 4:27 pm
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3 test shots today from a 6 pumpkin gun.

Shot 1 25 psi 110 Yd
Shot 2 30 Psi 130 yd
Shot 3 40 Psi 225 yards! I was not expecting that Very happy

The...

Last post

Well 990ft Not bad at all 50 psi

Thanks Dan
26 Replies

11229 Views

Last post by SDdan
Sun Nov 01, 2009 11:12 am
Pnumatic cannon concept

Last post by metalmeltr
Replies: 3
by metalmeltr » Fri Oct 30, 2009 2:59 pm

First post

I have an idea to use an old propane tank as a pressure tank with a piece of hydraulic hose coming up to the gun. Dual 1 sprinkler valves for...

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I am going to use dual sprinler valves to allow for upgrades in performace down the road. The compressor in question would be a 60 gallon two stage...

3 Replies

1616 Views

Last post by metalmeltr
Sun Nov 01, 2009 5:13 am
bb machine gun: update

Last post by jackssmirkingrevenge
Replies: 4
by AngryChauncey » Sat Oct 31, 2009 11:48 pm

First post

Ok so I decided not to spend the money on a shock pump, so I used the entire tank assembly from an old bb gun and affixed a 5.56mm barrel to it. I...

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if its 5.56mm why not just shoot .22 cal pellets?

Good point, if you're shooting darts a wider smoothbore barrel is more ideal.

4 Replies

1796 Views

Last post by jackssmirkingrevenge
Sun Nov 01, 2009 12:29 am
22mm piston

Last post by cannon monkey
Replies: 4
by qwerty » Fri Oct 30, 2009 5:15 am

First post

On my 22mm coaxail i have hot glue piston it's okay, but opens very slowly. I don't have enough epoxy to make an epoxy piston so does anyone have an...

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i used a big wood stick found outside :D cut it down and sand to size

4 Replies

1837 Views

Last post by cannon monkey
Sun Nov 01, 2009 12:28 am
Interesting GGDT phenomena...

Last post by jeepkahn
Replies: 5
by jeepkahn » Sat Oct 31, 2009 9:26 am

First post

I've been playing with GGDT a lot here lately in an attempt to refine some designs I've been working on, so I've been looking at the acceleration...

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Anything special about the design? Make a note of it here!
Time(ms) ProAcc(Gs) ProVel(ft/s) ProPos(in) ResPres(psi) BarPres(psi) BarTemp(F) ValPos
0...

5 Replies

1369 Views

Last post by jeepkahn
Sat Oct 31, 2009 3:21 pm
Testing...

Last post by jrrdw

by jrrdw » Fri Oct 30, 2009 6:31 am

Testing.....testing....testing.....

Edit: Picture added.

0 Replies

4556 Views

Last post by jrrdw
Fri Oct 30, 2009 6:31 am
Most Expensive Air Rifle?

Last post by jackssmirkingrevenge
Replies: 14
by boyntonstu » Thu Oct 29, 2009 9:02 am

First post

I saw a very expensive smooth bore air rifle in the web that was about $3,000.

The website showed the grouping accuracy that was pretty impressive....

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I am thinking golf balls and a sleeve that would act like the cut off CO2 cartridge to make a good fitting projectile.

If I used a 3 -4 barrel at...

14 Replies

4856 Views

Last post by jackssmirkingrevenge
Fri Oct 30, 2009 12:17 am
C02 regulator under $40

Last post by metalmeltr
Replies: 7
by metalmeltr » Wed Oct 28, 2009 3:33 pm

First post

I need to find a way to go from a paintball tank to a npt and have the pressure regulated below 250psi. I would like to stay under $40 if possible. I...

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No pvc would be holding pressure in this setup. Does any one know why the adapter to go from the tank to the pipe thread costs $15? As far as cheap...

7 Replies

2462 Views

Last post by metalmeltr
Thu Oct 29, 2009 2:31 pm
Golf Ball at 400 fps

Last post by jackssmirkingrevenge
Replies: 10
by boyntonstu » Wed Oct 28, 2009 6:45 pm

First post

Do you think that the Thornily Calculator is correct in saying a golf ball at 400 fps has this much power?

edited by MrCrowley to comply with...

Last post

Hehe, this time you beat me to it :D

10 Replies

8040 Views

Last post by jackssmirkingrevenge
Thu Oct 29, 2009 2:19 pm
compact air compressor question

Last post by Technician1002
Replies: 13
by grock » Wed Oct 28, 2009 12:01 am

First post

i was looking at buying one of these but was wondering how well they work. does anyone own one? whats the volume output? how hard would it be to...

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these things are not worth their price... just find an old fridge and you've got a pretty nice compressor...

you could use it to fill an old co2...

13 Replies

3160 Views

Last post by Technician1002
Thu Oct 29, 2009 11:38 am
Enhancing a Piston Valve

Last post by AngryChauncey
Replies: 19
by Hubb » Wed Oct 28, 2009 11:05 am
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I was thinking the other night about piston valves. One of the things that come into my head was, How can I take away the mass factor from a piston...

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The power change from 0ms to 4 ms valve time is huge on a plastic pellet.

Yeah it is :o . Sorry I didn't specify but i meant you wouldn't notice...
19 Replies

5403 Views

Last post by AngryChauncey
Thu Oct 29, 2009 12:24 am
BB sniper

Last post by jackssmirkingrevenge
Replies: 14
by AngryChauncey » Tue Oct 27, 2009 10:58 pm

First post

I am building a .177 caliber bb rifle with a 0.5 piston valve and a 1.5' barrel (all metal by the way). My question is this: I was planning on making...

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Shame :( I'm wondering if they have enough volume for a 0.22 projectile though. They would certainly be ideal for a 3mm calibre cartridge but I'm not...

14 Replies

4307 Views

Last post by jackssmirkingrevenge
Wed Oct 28, 2009 10:04 pm
130 psi damage

Last post by theBOOM
Replies: 1
by boyntonstu » Wed Oct 28, 2009 8:42 pm

First post

6 pieces of plywood.

Amazing!

Last post

WOW impressive damage with that improvised ammo... with all that weight it was sure to give more surprising ft/pnds than the frozen potato.. Might...

1 Replies

996 Views

Last post by theBOOM
Wed Oct 28, 2009 9:25 pm
Exhaust pipe for golf balls?

Last post by Technician1002
Replies: 2
by boyntonstu » Wed Oct 28, 2009 3:22 pm

First post

Has anyone found exhaust pipe that would be the correct ID for a golf ball barrel?

BoyntonStu

Last post

Looking on line for tubing supplies for exhaust pipe, I found the most common size pipes are 2.25, 2.5, 3, 3.5, & 4 inch OD for performance exhaust....

2 Replies

1713 Views

Last post by Technician1002
Wed Oct 28, 2009 4:18 pm
Wadding ideas

Last post by jeepkahn
Replies: 7
by SDdan » Tue Oct 27, 2009 10:34 pm

First post

My Pumpkin cannon is ready. I picked out some pumpkins today and I need some wadding to make a nice tight seal. What are some ideas of materials that...

Last post

If your shooting for fun, wadding is fine, PC rules state that competition shots are NOT allowed wad/sabot/etc... Punkin only...

7 Replies

3761 Views

Last post by jeepkahn
Wed Oct 28, 2009 12:07 pm
my bits n peices cannon

Last post by spud downunder
Replies: 7
by spud downunder » Fri Jul 17, 2009 2:25 am

First post

ok so here is my first working gun i have made, it is a marbel rifle/ shotgun/ dart gun that i made awhile ago, basiclly it is made up of bits and...

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ok so heres a bit of an update to my 'bits n peices gun'. i have removed one of the gatevalves to loose the wheight a bit. also fixed the leaky ball...

7 Replies

4766 Views

Last post by spud downunder
Wed Oct 28, 2009 1:24 am
A stay open piston valve concept.

Last post by Technician1002
Replies: 8
by boyntonstu » Mon Oct 26, 2009 10:33 am

First post

Does it pay off to consider a piston valve that flies away from the seal, hits the bumper, and is retained until the next pressurization?

A tapered...

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Yeah I don't know if you would really notice the difference in performance, but it would look sick if you took it apart to show someone. By the way...

8 Replies

2801 Views

Last post by Technician1002
Tue Oct 27, 2009 7:37 pm
What do you think guys?

Last post by psycix
Replies: 3
by omar123omar » Tue Oct 27, 2009 1:39 pm

First post

Don't worry guys, I have all the parts but have some questions!!!

This is the ball valve with its extensions

This is the pressure chamber i'll...

Last post

145 psi

3 Replies

3105 Views

Last post by psycix
Tue Oct 27, 2009 4:08 pm
High Pressure Question

Last post by ramses
Replies: 10
by AngryChauncey » Tue Oct 27, 2009 2:03 am

First post

I've been reading some posts about using 500-600psi and i was wondering what you would use to get this sort of pressure. Is it just a HUGE air...

Last post

I've been reading some posts about using 500-600psi and i was wondering what you would use to get this sort of pressure. Is it just a HUGE air...

10 Replies

2363 Views

Last post by ramses
Tue Oct 27, 2009 3:37 pm
Golf Ball hop-up

Last post by AngryChauncey
Replies: 18
by AngryChauncey » Sat Oct 24, 2009 5:34 pm
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This is a very quick and preliminary method of adding hop-up to any launcher that shoots round objects like golf balls or super balls. It is a 2 cpl....

Last post

That's a good idea but physics is fun so why not calculate it? (even though I don't know how to calculate drag :( )
18 Replies

14219 Views

Last post by AngryChauncey
Tue Oct 27, 2009 2:23 am
Golf Ball cannon

Last post by AngryChauncey
Replies: 15
by AngryChauncey » Sun Oct 25, 2009 6:59 pm
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This is my first attempt at a cannon with a piston valve. It is a 1.5 barrel sealing piston valve with a Bondo piston. The piston was molded in 1.5...

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Yeah MrC is right on. Before I made this cannon I was discussing on the site about piston pilots, and thought I might as well go as big as I can....
15 Replies

10787 Views

Last post by AngryChauncey
Tue Oct 27, 2009 1:52 am
Need an in line CO2 Regulator

Last post by pizlo
Replies: 5
by rcman50166 » Mon Oct 26, 2009 9:40 am

First post

Hey guys I need help finding an inline CO2 regulator. I was thinking of getting the Kobalt CO2 regulator but after reading reviews I'm hesitant. Can...

Last post

Palmer will be your best quality, but since you seem more concerned with the price... :roll: you're gonna have to get something of lesser quality.

5 Replies

2035 Views

Last post by pizlo
Mon Oct 26, 2009 5:36 pm
Help With couplers and redurcers

Last post by AngryChauncey
Replies: 3
by SDdan » Sun Oct 25, 2009 10:21 pm

First post

I am trying to go from 6 to 2 and bought some reducers from Menards that I now think will not work. The 6 to 4 has this on it
6007 ABS Black AST...

Last post

I would go for sch. 40 just because it is safer, but you might have to order it online.

3 Replies

1368 Views

Last post by AngryChauncey
Mon Oct 26, 2009 12:38 am
Premature Ejecting Problem.

Last post by AngryChauncey
Replies: 13
by boyntonstu » Fri Oct 16, 2009 8:28 am

First post

I muzzle load a tight fitting projectile.

When I pressurize the chamber, air gets to the barrel before the piston seals and the projectile...

Last post

One thing I did was put a 1/4 in. ball valve behind the projectile, which you open while are loading it, and close when you are ready to fire.

13 Replies

3489 Views

Last post by AngryChauncey
Sun Oct 25, 2009 8:53 pm
School T-shirt Cannon

Last post by rcman50166
Replies: 41
by rcman50166 » Mon Sep 14, 2009 12:57 pm
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Hey, so I've convinced my school to let me build a pneumatic t-shirt cannon for our homecoming football game. I've decided to go with a co-axial...

Last post

Ok new update: The design has been approved and so has the budget. I'm waiting for the parts order to come in now but while I wait I'd figured I'd...
41 Replies

11338 Views

Last post by rcman50166
Sun Oct 25, 2009 7:33 pm

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