Here is an eight-legged walker built out of the old Technic beams and parts. I like it because the builder has done his homework. The thing is small and light, the legs move in a lifelike motion, and best of all, it is powered by a single motor. I wish he would have used a more powerful motor because I think it would walk better, but I respect him for using only the old Technic stuff. I am going to bookmark this mechanism because I am going to reproduce it. It's a great design and I have a thing for interesting linkages.