Yes, it came to me in a dream. (how corny is that ) so I sifted though my "box-o-cr*p" and started woring on it. a old minitrix 0-6-0, a old bachmann 4-4-0, a life like SW1200, a old flat car, some random gears and shafts, and alot fo CA and cussing later, I have made my first prototype. I think I am going to try to make a better one out of brass once I get this one refined. attached is a drawling of the basic "drive train". and, yes the side rods do function. now, it is really big, but I hope to be able to make it alot smaller version with brass at a later time. sorry bout the picture quality, I am no artist. I wil try to get photos asap.