Automatic valve for nerf rifle
Posted: Wed Jul 08, 2009 5:43 am
Well I've been thinking of tackling the nerf scene.. But not with some dodgy nerf vulcan or something..
I've been tossing up over a few different options, such as a 600 psi repeater, a semi automatic and full automatic. The semi and repeater are fairly conventional designs, but I was thinking about this one:
The operating pressure will be 120 psi, and up to 300.
The function is simple. Air enters from the right hand side, forcing the piston open and filling the chamber. When the chamber is full the pressure balance will take effect and the spring forces the piston back, closing the fill valve and firing the gun. Then the cycle repeats.
I think I might have left a vital part out, but you guys should get the idea.
The travel of the piston will also chamber a nerf dart and close the bolt.
I probably left out the crucial part that makes the fill side have a high acting force until the chamber pressure equalizes, then it becomes equal and the spring opens the valve.
Any thoughts, comments, queries?
I've been tossing up over a few different options, such as a 600 psi repeater, a semi automatic and full automatic. The semi and repeater are fairly conventional designs, but I was thinking about this one:
The operating pressure will be 120 psi, and up to 300.
The function is simple. Air enters from the right hand side, forcing the piston open and filling the chamber. When the chamber is full the pressure balance will take effect and the spring forces the piston back, closing the fill valve and firing the gun. Then the cycle repeats.
I think I might have left a vital part out, but you guys should get the idea.
The travel of the piston will also chamber a nerf dart and close the bolt.
I probably left out the crucial part that makes the fill side have a high acting force until the chamber pressure equalizes, then it becomes equal and the spring opens the valve.
Any thoughts, comments, queries?