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

925688 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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First post

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

452100 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

451177 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

634981 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

332097 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

80168 Views

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

Topics

Minimum parts count cannon

Last post by boyntonstu
Replies: 14
by boyntonstu » Sat Oct 24, 2009 8:47 am

First post

Counting parts:

Barrel 3/4 M copper
Chamber 3/4 M copper
3/4 Female adapter
3/4 copper T
1/2 ball valve
3/4 cap (Schrader optional)
3/4>1/2 bushing...

Last post

The Sten design was made by the thousands.
Millions, actually - but that doesn't mean it was notable for long range accuracy or controllability....

14 Replies

3674 Views

Last post by boyntonstu
Sun Oct 25, 2009 11:56 am
Small Pumpkin Gun

Last post by qwerty
Replies: 5
by SDdan » Sun Oct 25, 2009 9:37 am

First post

I am hoping to build a small pumpkin gun for a family competition on Sat. I will be shooting small gourds

I have helped build some small pneumatic...

Last post

lol i realised that just after i posted because i didnt actually read the topic. Anyway there pretty much the same thing.

5 Replies

2452 Views

Last post by qwerty
Sun Oct 25, 2009 10:20 am
Silencing a QEV Pneumatic

Last post by Marco321
Replies: 7
by Marco321 » Sat Oct 24, 2009 10:46 pm

First post

Hey
Im designing a QEV pneumatic, the bore will be around 14mm, the chamber around 14mm as well. I have like 90% of the details worked out, but one...

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Ill most likely be shooting into a large wooden box, backed with lots of fabric to absorb the impact. The target will be something standard, maybe...

7 Replies

2833 Views

Last post by Marco321
Sun Oct 25, 2009 7:20 am
Copper Gun - Help; Loading mechanism and valve

Last post by Marco321
Replies: 12
by Marco321 » Tue Oct 20, 2009 4:18 am

First post

Hey everyone
I plan to make a copper gun, that will shoot 6mm ball bearings. I think the gun will look different to any i have seen here, except i...

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Feel free to copy any design and alter it in any way you like...

As always..

I can;t wait to see your version..

thanks mate :), i'll let people...

12 Replies

2997 Views

Last post by Marco321
Fri Oct 23, 2009 6:36 pm
New wadding design and piston update - Also .wav file

Last post by boyntonstu
Replies: 32
by boyntonstu » Mon Oct 19, 2009 5:21 pm
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Foam wadding hot glued top marble.

Quite a tight fit.

Rear of Oak piston showing counter bore

Latest piston configuration using 8-32 screw...

Last post

bump: Hoping for analysis of the last .wav file.

Wow, 3 downloads and no comments on the file.

Before the trigger there is a low frequency sound...
32 Replies

8143 Views

Last post by boyntonstu
Fri Oct 23, 2009 4:35 pm
Almost baked a/c compressor.

Last post by psycix
Replies: 9
by boyntonstu » Thu Oct 22, 2009 7:06 pm

First post

I have a 600 psi gauge and have gone up to 550 psi many times.

Today, I said, why not go to 600 psi and I got a hot answer.

It pumped to 600 psi an...

Last post

My fridge compressor becomes very very hot after running it for a long time.
I never ran it too hot, because I shut it off when it becomes too hot to...

9 Replies

1777 Views

Last post by psycix
Fri Oct 23, 2009 1:46 pm
Pressure regulator question

Last post by psycix
Replies: 7
by velocity3x » Thu Oct 22, 2009 11:23 pm

First post

Anyone here know of a small pressure regulator (air) with an input max of 1000+ psi
Thanks in advance for any help.

Last post

Is that a muzzle brake?
Looks cool!

7 Replies

1664 Views

Last post by psycix
Fri Oct 23, 2009 1:42 pm
paintball asa

Last post by cannon monkey
Replies: 6
by turner » Thu Oct 22, 2009 6:49 pm

First post

anyone know what the output on paintball asa's is? i was guessing 1/8 from the other fittings they use

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i mean the part that screws into the asa cause i had it on a 3/8 ball valve now if it was in my dream or real life i dont know i go check in few...

6 Replies

1683 Views

Last post by cannon monkey
Fri Oct 23, 2009 11:44 am
How big should I make the air tank?

Last post by Technician1002
Replies: 10
by Sniperking98 » Thu Oct 22, 2009 8:45 pm

First post

I am currently building a pneumatic potato cannon. It has a manual valve with a five foot long two inch diameter barrel. The cannon will have a six...

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well rag..... as d_hall said it has to do with the Law of diminishing returns, i modeled a ball valve cannon to my best ability(burst disk with 15%...

10 Replies

3287 Views

Last post by Technician1002
Fri Oct 23, 2009 10:25 am
Semi Automatic Loading System

Last post by jor2daje
Replies: 19
by sl33k » Wed Oct 14, 2009 4:10 pm
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Hey guys, well I am very new to spud guns but at the moment I am making a gun that is based on the m40a3 sniper rifle.
I have run into a problem in...

Last post

I got mine from ebay
19 Replies

5708 Views

Last post by jor2daje
Thu Oct 22, 2009 9:13 pm
this is my airgun design

Last post by noname
Replies: 6
by omar123omar » Thu Oct 22, 2009 4:09 am

First post

My question is how can I attach the tire valve to the cooper pipe?

And how to attach the cooper pipe to the end of the duster?

Last post

Is there anything wrong with the word copper? Cooper is kind of obviously a completely different pronunciation and since you wrote it four times it...

6 Replies

2631 Views

Last post by noname
Thu Oct 22, 2009 3:06 pm
Having trouble with my coaxial

Last post by jackssmirkingrevenge
Replies: 11
by maverik94 » Tue Oct 20, 2009 4:54 pm

First post

Ok, I am working on a small coaxial. It had a barrel of 1/4 brakeline (really more like 1/8 ), and a chamber of 1/4 brass (really more like 3/8 )...

Last post

Jack could pilot that cannon coz he designed the pilot volume to be tiny and the valve to be air tight if I remember correctly.

The piston in that...

11 Replies

2656 Views

Last post by jackssmirkingrevenge
Wed Oct 21, 2009 1:52 am
GGDT question

Last post by jackssmirkingrevenge
Replies: 10
by boyntonstu » Mon Oct 19, 2009 9:22 am

First post

I have a 3/4 cannon (ID = .811 )

If I substitute a 1/2 barrel (ID = .569 ) and also reduce the projectile diameter to .569 maintaining the same...

Last post

If I substitute a 1/2 barrel (ID = .569 ) and also reduce the projectile diameter to .569 maintaining the same weight, GGDT calculates a decrease in...

10 Replies

2113 Views

Last post by jackssmirkingrevenge
Wed Oct 21, 2009 12:21 am
What blow gun have you used at 500-600 psi?

Last post by Brian the brain
Replies: 5
by boyntonstu » Mon Oct 19, 2009 6:57 pm

First post

What gun have you used at high pressure?

Where did you buy it?

BoyntonStu

Last post

But the title says 500-600!

It would be simplest to use a ballvalve.
A pushbutton valve would work as well...the one I made at least.. :D

5 Replies

1470 Views

Last post by Brian the brain
Tue Oct 20, 2009 3:21 pm
air cannon on the drawing board

Last post by Hubb
Replies: 7
by MrDEB » Mon Oct 19, 2009 11:43 pm

First post

Come August 2010 the local High Schools have a technology fair.
This year they had Trebuchet contests. A good friend of mine who is in H.S built a...

Last post

Not exactly. I was thinking more along the lines of connecting a trigger to a rod and when the trigger is pulled, it pulls the rod to open the...

7 Replies

2602 Views

Last post by Hubb
Tue Oct 20, 2009 10:58 am
Project Golf Cannon

Last post by Sam@UoN
Replies: 23
by Sam@UoN » Thu Oct 15, 2009 7:43 am
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Hi guys, firstly congratulations on some truly terrifying contraptions, I'm consistently suprised by the quality of work some people can produce from...

Last post

Yeah a 60J spring damper assy - will work a treat
23 Replies

12232 Views

Last post by Sam@UoN
Tue Oct 20, 2009 9:58 am
Fridgecompressor.

Last post by Jack_Hogg
Replies: 2
by Jack_Hogg » Mon Oct 19, 2009 1:57 pm

First post

Ok, well Saturday I got my fridgecompressor. It works fine. I have added a power cable with a flip-switch. Everything works well and its clean and...

Last post

what kind of tubing I should use for the compression fittings Do you mean a normal compression fitting or a homemade compression fitting?

It's a...

2 Replies

1031 Views

Last post by Jack_Hogg
Tue Oct 20, 2009 2:03 am
Railgun Injector V2 (all metal QEV)

Last post by rp181
Replies: 6
by rp181 » Mon Oct 19, 2009 8:23 am

First post

Here is the new injector for the railgun. The valve is a .5 QEV, the chamber is a modified propane tank. The barrel is the railgun, but I made a...

Last post

The projectile instability would not be a problem, as these are close fitting dimensions. In fact, higher speed would be beneficial, due to the rate...

6 Replies

2802 Views

Last post by rp181
Mon Oct 19, 2009 6:52 pm
High pressure schrader valve

Last post by POLAND_SPUD
Replies: 6
by kjjohn » Sat Oct 17, 2009 10:06 pm

First post

Does anyone know where I can get a schrader valve rated for 500 psi or above for under $40 and with NPT threads? I checked with mcmaster, but their...

Last post

yep but you might consider buying QC fittings rated to high pressures... not just those you can find in a hardware shop

6 Replies

2487 Views

Last post by POLAND_SPUD
Sun Oct 18, 2009 11:47 am
All steel 7mm hammer valve rifle

Last post by Dave_424
Replies: 2
by Dave_424 » Sun Oct 18, 2009 10:58 am

First post

Hey guys, this is a proect that I an undergoing that wil actually get built. Im making a fully steel hammer valved rifle in 7mm calibre.

Im going...

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Thanks, ammunition will be home cast lead slugs and or ball bearings if I can find some suitable.

Loading mech will be the same design as Old...

2 Replies

1164 Views

Last post by Dave_424
Sun Oct 18, 2009 11:40 am
Getting back into spudding - Building a copper pneumatic

Last post by Marco321
Replies: 8
by Marco321 » Fri Oct 16, 2009 8:28 pm

First post

Hey everyone!
I missed you all lol!

I stopped spudding like 2 years ago because mom didnt think like me doing something that was technically...

Last post

thanks absinthe :)

8 Replies

3123 Views

Last post by Marco321
Sun Oct 18, 2009 7:10 am
My First Metal Gun

Last post by Pascal123
Replies: 10
by KurlyQ » Fri Oct 16, 2009 1:42 pm

First post

My first metal gun I've created.
It's all a product of having too much time on my hands after a day of mid-term finals.

Specs:
Barrel: length: 6...

Last post

I think you should turn the T fitting, that the shrader valve is aiming towards so you can not damage the valve if you put the back of the gun on the...

10 Replies

5617 Views

Last post by Pascal123
Sun Oct 18, 2009 5:07 am
Xrv valve(with vid)

Last post by qwerty
Replies: 2
by Demon » Sat Oct 17, 2009 8:36 pm

First post

Just made a little xrv valve. pretty good for its size.

(ammo is rolled electrical tape against cardboard at 40 psi with a small air chamber)...

Last post

Very nice drum beat at the start of the vid :D
i like it alot i tried to make one of these myself but could never find the right parts.
i reckon you...

2 Replies

993 Views

Last post by qwerty
Sun Oct 18, 2009 2:22 am
My first piston airgun .39cal

Last post by jackssmirkingrevenge
Replies: 3
by Pascal123 » Sat Oct 17, 2009 4:50 pm

First post

Hello

My name is Pascal and im 16 years old. Im from the Netherlands. Im new on spudfiles and im building airguns for a while. First I started with...

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[quote= Pascal 123 ]Its really amazing how hard this gun can shoot on 15 bars.

Don't you mean 15,000 kMe's :D

Joking aside, very nice effort, your...

3 Replies

2964 Views

Last post by jackssmirkingrevenge
Sat Oct 17, 2009 5:58 pm
Air Tank refilling capacity

Last post by D_Hall
Replies: 5
by tweeek » Fri Oct 16, 2009 4:28 pm

First post

Sorry for the noob question. My chamber has a capacity of about 270ci. I was looking at buying a 11 gal 125PSI air tank from HD. How many refils will...

Last post

OK, my appologies. WHen you mentioned ball valves I thought you meant you were using them to fire with. As for filling your chamber, it doesn't...

5 Replies

1127 Views

Last post by D_Hall
Sat Oct 17, 2009 2:52 pm

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