[s_forbes]

Great design, you could build that whole thing in a day! Well, except for the transmissions... I like how you completely eliminated the need for any tensioning device with the use of 80/20, very clever. The only "problem" I can see with it is the lack of any diagonal bracing, but I suspect the electronics board or the top half of the robot will account for that. I doubt that you'd let anything like that slip by.