[pmangels17]

Originally Posted by Peter Matteson

Mechanically locking a cylinder and keeping the valve open won't do anything.

Once you have 60 psi air in the area of the cylinder it can fill it will stop flowing. Adding low pressure volume does nothing but make your compressor work harder for no reason. The reason you have high pressure storage is the change in volume of the air as it expands to a lower pressure acts as energy storage. Without the expansion just oure volume does nothing.

Please rethink your plan and consult a mentor that has some experience in fluid dynamics.

In 2008 we used a lock and air tanks on the cylinder because the flow rate through the solenoid wasn't fast enough to accelerate the ball quickly. The extra tanks were mounted using brass fitting to allow a larger volume of air to be stored, so that when the piston is released, the air can flow faster into the cylinder, thus moving the piston faster. This gave us more power and a quicker shot. Adding a tank between the valve and cylinder facilitates a more powerful shot.