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 70 users online :: 5 registered, 0 hidden and 65 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Just talking out of my butt here...

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

Just talking out of my butt here...

Unread postAuthor: Intel Xeon » Wed Mar 28, 2007 8:42 pm

Okay, so I was thinking of redirecting the expanding gas from the firing to drive a spring loaded bolt on the bottom, near the end of, the barrel that would pressurize an auxiliary chamber on the downswing and when swinging up, Close the primary -> Aux chamber connection.

Some immediate problems that I see with this, need for one bigass primary chamber, and somehow having the aux chamber pressurize adequately during the swing meanwhile having enough spring tension to close the valve.

The firing could be controlled by a trigger or somehow worked into one of the swing phases of the bolt.

Ideas?
  • 0


Intel Xeon
Sergeant
Sergeant
 
Posts: 84
Joined: Sat Mar 17, 2007 9:43 pm
Location: Philly, PA. (home's in Worcester,MA)
Reputation: 0

Unread postAuthor: c19o » Wed Mar 28, 2007 8:47 pm

I dont get it, but is your idea is to close a ball valve after its fired? Or close it before all the air goes out? I'm confused.
  • 0

User avatar
c19o
Major
Major
 
Posts: 356
Joined: Thu Dec 14, 2006 11:59 pm
Location: Fairfield Bay, Arkanasas
Reputation: 0

Unread postAuthor: Intel Xeon » Wed Mar 28, 2007 8:52 pm

The primary and aux chambers would be connected by some valve, whether butterfly or ball. It would have some form of equalization hole that would have to dispense enough air before the spring pulls the valve shut.
  • 0


Intel Xeon
Sergeant
Sergeant
 
Posts: 84
Joined: Sat Mar 17, 2007 9:43 pm
Location: Philly, PA. (home's in Worcester,MA)
Reputation: 0

Unread postAuthor: c19o » Wed Mar 28, 2007 8:56 pm

I would go with a piston valve.
  • 0

User avatar
c19o
Major
Major
 
Posts: 356
Joined: Thu Dec 14, 2006 11:59 pm
Location: Fairfield Bay, Arkanasas
Reputation: 0

Unread postAuthor: Intel Xeon » Wed Mar 28, 2007 8:59 pm

well, a piston seems like overkill for just pressurizing a second chamber, but please elaborate. if you mean for the actual firing trigger, then it might respond too slow for semi-auto fire.
  • 0


Intel Xeon
Sergeant
Sergeant
 
Posts: 84
Joined: Sat Mar 17, 2007 9:43 pm
Location: Philly, PA. (home's in Worcester,MA)
Reputation: 0

Unread postAuthor: c19o » Wed Mar 28, 2007 9:36 pm

No, I mean a piston valve as the main valve. I can hook up my piston valve (1.5" porting), and my coaxial marble gun to a quick disconnect from an air compressor. Then just flick the ball valve open and closed and the gun fires and refills pretty fast my marble gun can get off a shot a second when my compressors filled up. ( not actually firing marbles, just air. But my piston It would work well with semi-automatic system where the air from the firing blows a bolt or something like that to uncover a spring-loaded breech which loads more ammo.
  • 0

User avatar
c19o
Major
Major
 
Posts: 356
Joined: Thu Dec 14, 2006 11:59 pm
Location: Fairfield Bay, Arkanasas
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'