efficiency- motor vs. pnuematic

[BenB]

Hey,

I was wondering which would be more efficient, a motor or a pnuematic piston assuming each needs to do the same amount of work, say, lifting a single jointed arm. Is there more energy lost in the motor or the compressor to supply enough air to move the piston. I realize the draw backs of pnuematics, slow and limited (2) positions.

On the side, I understand we are not allowed to make "lightning holes" in the flag holder but how much are we allowed to modify it for mounting purposes. Also, does anyone have a better picture of the lap indicator? The one in the manual is only from above and Im not 100% sure about how it mounts.

Thanks