[twiegner]

Hmmm... at the workshop we went to at kickoff, the team had a nice long spring return actuator that went at least 6" if not 8", they mentioned where they got their pneumatics but I cannot remember at the moment. As for an external spring, at that point it may be more trouble than its worth, if anyone does know of a place to buy a 6" stroke spring return pneumatic actuator that would be fantastic, otherwise we may use a rack & pinion setup with a limit switch to do auto return and not use pneumatics or just do some precise calculations to see how much air we would need stored to shoot and return a piston as many times as we think is reasonable.