We used 2 of those babies to power our main arm. Both are coupled into a shared shaft, which has a small sprocket attached. That sprocket then sits on a fixed chain "roller" system. While it may add a little weight, it saves us the frustration of chain tensioners. It also makes for easy swap on/swap off of motors and sprockets.
http://www.chiefdelphi.com/forums/sh...d.php?t=35032&
I dont care what anyone says, the FP motor is one of the best in the kit!