[kirtar]

Yeah we used a big CIM motor. In fact the motor and wheels were actually taken directly off of our 2006 robot (there were two wheels in the picture, not one). As for range, we were testing it around 10 feet from who knows what height because we just set it on a table. Just a note, in the orientation that it's in in the picture we noticed that the distance the ball traveled was partially dependent on how high we dropped it in from (of course, that wasn't the only variable...).