http://prntscr.com/9pvvta
http://prntscr.com/9pvvwq
http://prntscr.com/9pvvyy
http://prntscr.com/9pvw4l
The arm used a 50:1 Versaplanetary with a Cim with a 60:16 Chain reduction I would recommend more reduction, We just had no more ability to gear it down more.
The center wheel had 1/8th of an inch drop.