Posted: Sun Jul 25, 2010 11:35 am
The reg is a Palmers Pursuit Stabilizer.
In the video it was running off my compressor at around 100psi. I was playing around with the regulator last night and found out just how wide a range it's capable of. I was able to regulate the pressure so low that the darts failed to leave the barrel, and even lower so that the cylinder could not even extend. Safety was a major concern and I'm glad to see this thing can be tuned very low.
This gun was meant to be carried on my back during a game called Humans Vs. Zombies. I carried it around just to test it and found that the safety ball valve I added was sticking into my back and causing sharp pain during running, so I relocated it to the right side where the regulator is. In this position, the ball valve can only be opened slightly. At lower pressures, this acts like a flow control and causes the cylinder to extend very slowly. This little flaw turned out to work in my favor because it ensures jam-free chambering. It does not affect firing at all, only loading.
So, if anyone's building a projectile-pusher style semi-auto and is experiencing jams, you might want to try adding a flow control at the air input to slow down your cylinder's forward stroke.
I chose sch40 PVC because it fits regular micro darts well, and this was important because everyone else I play with uses those and I'll always have a good supply available. It could easily be sleeved but I'm happy with this for now. Regular micro darts with the suction cups cut off are very accurate. The barrel is 20".
In the video it was running off my compressor at around 100psi. I was playing around with the regulator last night and found out just how wide a range it's capable of. I was able to regulate the pressure so low that the darts failed to leave the barrel, and even lower so that the cylinder could not even extend. Safety was a major concern and I'm glad to see this thing can be tuned very low.
This gun was meant to be carried on my back during a game called Humans Vs. Zombies. I carried it around just to test it and found that the safety ball valve I added was sticking into my back and causing sharp pain during running, so I relocated it to the right side where the regulator is. In this position, the ball valve can only be opened slightly. At lower pressures, this acts like a flow control and causes the cylinder to extend very slowly. This little flaw turned out to work in my favor because it ensures jam-free chambering. It does not affect firing at all, only loading.
So, if anyone's building a projectile-pusher style semi-auto and is experiencing jams, you might want to try adding a flow control at the air input to slow down your cylinder's forward stroke.
I chose sch40 PVC because it fits regular micro darts well, and this was important because everyone else I play with uses those and I'll always have a good supply available. It could easily be sleeved but I'm happy with this for now. Regular micro darts with the suction cups cut off are very accurate. The barrel is 20".

