[Kevin Selavko]

On our vex robot our pistons default to retracted so we start in a legal configuration, but can you have a solenoid that defaults to push a piston into where you store your ball when it has no signal, and possibly have it on its own pneumatic circuit in case the first one fails? This way if you have a ball and you become disabled/battery dies/act-of-god, the ball will be ejected, or is this not allowed?

EDIT: I does not need to be very forceful, just enough to make your ball holder a shape that the ball will roll out of.