So cooper I did some testing on my design ..I filled the pup box with dirt ..Mostly dry with a little dampness ..I tried with the 9 battery 10.5 volt pack i made up the other day ..No go..I ended hooking up a 3 cell lipo 11.4 volt battery and it came up ok ..Im thinking this should be max for this cyclinder..For th truck box i am going to slghtly modify the thicknesses for the width to accomadate 2 cyclinders side by side ..Im sure it will have prnty of balls to lift it then
