Newbie with a question

[R9000]

I imagine you'd exhaust your CO2 supply after only a few spin-ups, even quicker if you had to spend long periods of time without hitting the other robot. I'd expect the energy density of a lipo is more than that in the compressed gas at the temperatures and pressures in a featherweight. I think pneumatics are useful for getting things accelerated and moving over very short bursts, like flippers and axes. There are a few pneumatic grabbers too. Maybe if you had a motor to keep it going, but if you're talking something like Carbide's bar I think you might as well have just the motor. What's more you're now relying on two separate systems to activate one weapon. If one goes down, the weapon does too.