Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 44 users online :: 4 registered, 0 hidden and 40 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Some questions

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Some questions

Unread postAuthor: DerpWithAGun » 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? http://www.youtube.com/watch?v=BhHvxfDg-uw

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.
  • 0


DerpWithAGun
Sergeant First Class
Sergeant First Class
 
Posts: 144
Joined: Sat Jul 30, 2011 10:11 am
Reputation: 0

Unread postAuthor: jrrdw » 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.
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6538
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: Mr.Tallahassee » 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.
  • 0

User avatar
Mr.Tallahassee
Major
Major
 
Posts: 364
Joined: Sun Jul 10, 2011 2:35 am
Reputation: 0

Unread postAuthor: jor2daje » 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).
  • 0

Patience is a virtue, get it if you can, seldom in a women, never in a man.
User avatar
jor2daje
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 418
Joined: Sun Oct 05, 2008 9:41 pm
Location: Southern California
Reputation: 0

Unread postAuthor: saefroch » 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? http://www.youtube.com/watch?v=BhHvxfDg-uw
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:
  • 0

User avatar
saefroch
Major General
Major General
 
Posts: 1679
Joined: Mon Jun 08, 2009 8:47 am
Location: U.S.A.- See Map
Country: United States (us)
Reputation: 0

Unread postAuthor: mattyzip77 » 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!!!
  • 0

User avatar
mattyzip77
Donating Member
Donating Member
 
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts
Reputation: 0

Unread postAuthor: jor2daje » Tue Aug 02, 2011 9:13 pm

i think i know what youre talking about ;)

Image
  • 0

Patience is a virtue, get it if you can, seldom in a women, never in a man.
User avatar
jor2daje
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 418
Joined: Sun Oct 05, 2008 9:41 pm
Location: Southern California
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Gun Freak » Tue Aug 02, 2011 9:28 pm

Matty you know that is the same as mine lol
Jor, great minds think alike :D
  • 0

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
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: mattyzip77 » 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:
  • 0

Go Bruins!!!!
User avatar
mattyzip77
Donating Member
Donating Member
 
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts
Reputation: 0

Unread postAuthor: MrCrowley » Tue Aug 02, 2011 9:36 pm

  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: DerpWithAGun » 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.
  • 0


DerpWithAGun
Sergeant First Class
Sergeant First Class
 
Posts: 144
Joined: Sat Jul 30, 2011 10:11 am
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'