Closing slam on seal
Posted: Mon Sep 28, 2009 6:31 pm
Hey people,
So i just finished my coaxial (i'll post it when it's working) it's 1/4inch barrel and 40mm pn 12 chamber.
my problem is that when i pressurize, the piston slams extremely hard against the barrel, which is pushing it through the front cap. This is caused because when it fires the piston moves back into the slightly smaller diameter of the pipe in the end cap, creating a seal and jammed. So in order for me to close the piston i need the same amount of pressure that my last shot had.
I normally use it at 100 psi so; 2*pi*.728 (area of piston face) = 4.571 inch squared.
4.571*100psi = 457.1 pounds of force (not calculating weight of piston)
this force is just stripping the epoxy from the sanded barrel to the end cap, What can i use/make that would solve this?
Edit: spell check , and i'm really sorry about the many posts! it wouldn't load so i refreshed.
So i just finished my coaxial (i'll post it when it's working) it's 1/4inch barrel and 40mm pn 12 chamber.
my problem is that when i pressurize, the piston slams extremely hard against the barrel, which is pushing it through the front cap. This is caused because when it fires the piston moves back into the slightly smaller diameter of the pipe in the end cap, creating a seal and jammed. So in order for me to close the piston i need the same amount of pressure that my last shot had.
I normally use it at 100 psi so; 2*pi*.728 (area of piston face) = 4.571 inch squared.
4.571*100psi = 457.1 pounds of force (not calculating weight of piston)
this force is just stripping the epoxy from the sanded barrel to the end cap, What can i use/make that would solve this?
Edit: spell check , and i'm really sorry about the many posts! it wouldn't load so i refreshed.