Are there any theoretical works about possiblity of self-replication of LEGO systems? (constraints on the size etc., computer simulations) Here are some relevent links: Bartlab.org: PDF Document ...
I once tried to make a 4 wheeled Lego robot using a pivot arm suspension system. The robot was motorized using 2 Mindstorm (2.0) motors (one one each side). I can't find and original picture but it ...