How much air would this use?

[JesseK]

Pressure1 * Volume1 = Pressure2 * Volume2 (with some atmosphere accounting as well)

Pressure 1 = Storage Pressure (at tanks)
Volume 1 = Total Volume of all tanks
Pressure 2 = Working Pressure (at cylinder)
Volume 2 = Volume of extend + Volume of retract for entirety of match (note - they aren't quite the same)

We used this simple equation to figure out how many tanks we would need to extend/retract our intake (3" stroke, 1.25" bore, up to 6 times in a match), kick/hold cylinders (1" stroke, 0.75" bore, up to 8 times in a match) and shifting cylinders (0.5" stroke, 0.75" bore, up to 4 times in a match). Once we had an exact amount of tanks (2 for us) we added one tank as a buffer between our calculations and what our calculations didn't account for.

If we keep the pneumatics topped off at 110 PSI (literally have the kids tether/enable in queue the match before), we haven't had a problem maintaining > 60 PSI.