[catsylve]

We have been operating between 30 and 80 psi, depending upon where we want to get the t-shirts. If we leave the rubberband around the tshirt, we can get them launched over the top of the bleachers in the football stands. On the other hand, we lower the pressure way down for the parade and loaded the tshirts with some candy and took the rubber band off so that the candy would come out the tshirt wouldn't hurt anyone close by.

Used sprinker valves for each of the launchers and each has it's own storage tank. Because we only used one compressor, it takes a couple of minutes to charge all four tanks fully, but that is okay, because we need to load tshirts during that time.