Some questions

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
DerpWithAGun
Specialist
Specialist
Posts: 144
Joined: Sat Jul 30, 2011 10:11 am

Tue Aug 02, 2011 4:36 pm

Okay, since I gave up on the piston valve I would like to ask a few questions about something else.

1. Is there another type of valve that's really simple other than sprinkler valves? It can be slightly harder to make than Piston valves.

2. Can a Ball valve air gun be made strong enough to launch a dart straight up to 100 meters?

3. Can someone explain to me how this works?

4. If I was to attach 2 or 3 50mm PVC pipe, about 1 - 2 foot long each to a ball valve air gun as air chambers, pumped to 120 PSI, would it be strong and what capabilities in shooting projectile could be reached?

5. Lastly, What is a hybrid spud gun?

Thanks for reading, If you'll answer one of my question please put the number of the question behind your text so I know which question your talking about.
User avatar
jrrdw
Moderator
Moderator
United States of America
Posts: 6531
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Has thanked: 11 times
Been thanked: 3 times
Contact:

Donating Members

Tue Aug 02, 2011 4:48 pm

You are by no means what so ever ready to know how it works if you can't figure out a simple piston valve! 3 & 5.
Look if you must.
User avatar
Mr.Tallahassee
Specialist 3
Specialist 3
Posts: 364
Joined: Sun Jul 10, 2011 2:35 am

Tue Aug 02, 2011 4:54 pm

1. You can make a QDV valve for a coaxial gun. I'll edit in a link when I find one.

2. Spring loading a ball valve, given the right dimensions and ammo, can be more powerful than piston valves given the amazing flow through a ball valve.

3/5.That is a hybrid combustion gun. It uses metered fuel and air pressurized in the chamber with a piston specially designed to pop open at a certain pressure after combustion. It it far more complicated than pneumatics or regular combustions. Jrrdw is right. Stay away from hybrids.

4. That depends on the size of the valve and barrel but it can be very powerful.
User avatar
jor2daje
Specialist 4
Specialist 4
Posts: 418
Joined: Sun Oct 05, 2008 9:41 pm
Location: Southern California

Tue Aug 02, 2011 5:13 pm

learn how to make a piston valve, once you understand it and are able to build it, you can use those principals to make and design other valves.

as tallahassee said spring loading a ball valve will give you very good performance (before you ask no one will find you a step by step tutorial on how to make one, use search on this site and google).
Patience is a virtue, get it if you can, seldom in a women, never in a man.
User avatar
saefroch
Staff Sergeant 2
Staff Sergeant 2
Posts: 1679
Joined: Mon Jun 08, 2009 8:47 am
Location: U.S.A.- See Map

Tue Aug 02, 2011 5:35 pm

DerpWithAGun wrote:1. Is there another type of valve that's really simple other than sprinkler valves? It can be slightly harder to make than Piston valves.
The only other option that I can think of is a burst disc or valveless design. QDVs are a type of piston valve, and may be more difficult to build.
DerpWithAGun wrote:2. Can a Ball valve air gun be made strong enough to launch a dart straight up to 100 meters?
Yes, if you're willing to put up with possibly crazy dimensions.
DerpWithAGun wrote:3. Can someone explain to me how this works?
That's SpudBlaster15's newest hybrid. Thread is here.
DerpWithAGun wrote:4. If I was to attach 2 or 3 50mm PVC pipe, about 1 - 2 foot long each to a ball valve air gun as air chambers, pumped to 120 PSI, would it be strong and what capabilities in shooting projectile could be reached?
I cannot answer your question. You have not specified barrel dimensions, a projectile, or expected range.
DerpWithAGun wrote:5. Lastly, What is a hybrid spud gun?
Your username seems more and more apt... There is an entire section of the wiki on hybrids! :banghead:
User avatar
mattyzip77
Sergeant 3
Sergeant 3
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts

Donating Members

Tue Aug 02, 2011 8:33 pm

You could try a qev, its less confusing than a piston, but is pretty much the same thing. I had a hard time as well with the piton valve but once I had one in my hands it was so simple!!! Keep studying them and you will get it sooner or later. Try to find jor2dazes diagram of a 13 dollar piston valve, its easy!! If someone knows what I am talking about, can you please post for this guy!!!
User avatar
jor2daje
Specialist 4
Specialist 4
Posts: 418
Joined: Sun Oct 05, 2008 9:41 pm
Location: Southern California

Tue Aug 02, 2011 9:13 pm

i think i know what youre talking about ;)

Image
Patience is a virtue, get it if you can, seldom in a women, never in a man.
User avatar
Gun Freak
Lieutenant 5
Lieutenant 5
Posts: 4971
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Been thanked: 7 times

Tue Aug 02, 2011 9:28 pm

Matty you know that is the same as mine lol
Jor, great minds think alike :D
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
mattyzip77
Sergeant 3
Sergeant 3
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts

Donating Members

Tue Aug 02, 2011 9:33 pm

Gun Freak wrote:Matty you know that is the same as mine lol
Jor, great minds think alike :D
No its not, the actual piston is different, lol!! :laughing6: :laughing6:
Go Bruins!!!!
User avatar
MrCrowley
Moderator
Moderator
Posts: 10078
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand

Tue Aug 02, 2011 9:36 pm

DerpWithAGun
Specialist
Specialist
Posts: 144
Joined: Sat Jul 30, 2011 10:11 am

Wed Aug 03, 2011 12:44 am

Ok guys, Thanks for all the help suggestions ect.
I'd like to build a spring powdered ball valve. If I am correct a spring powered ball valve is the one with the piece of string attached to a spring, trigger and the ball valve handle?

I'm going to do some research now. Thanks again guys.
Post Reply