Quote:
Originally Posted by Tangert
Use an scba tank or a nitrogen tank hooked into a regulator that has an inlet pressure rating of 4k and an outlet rating of 150-400 psi. Can go a whole football game on 1 battery and 1 tank.
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We've done at least two football games on a scuba tank, with a fresh battery for each game. The standard scuba regulator produces about 150 psi, and we used a stock FRC regulator to charge our cast iron accumulator tank to 50-60 psi. We then used 1"+ plumbing and a 3/4" solenoid valve (way beyond FRC legal in volume, though not pressure) to feed into our launcher. With 60 psi and 50 ms of "solenoid open" time, we have tossed t-shirts and foam mnii-footballs over our press box onto Ninth Street. To date, we have run 40-50psi during games, keeping a 50ms "valve open" time, to get most of our shirts and footballs to land somewhere in the stands..