Tried 2 of those car compressors on a featherweight axe (Blue), still not enough, a 36V one we found did the trick after the motor was replaced by a drill motor but was too heavy for a good featherweight. First little flipper also used one compressor to start but we were always waiting for it to reach pressure before we could flip, so in a middleweight 1 or 2 would be out of the question (8?). In a feather its still a good starting point and also good for testing without the need for CO2.

Our middle wont be finshed for a while but would be good for another to be out there as well.

Little Hitter uses an 80mm bore ram with 50mm stroke, and even though its only an axe its quite capable of throwing itself out of the arena at 10 bar .