[foobert]

i would be concerned about the weight of the vex parts, and the number of parts required to keep an axle attached to a motor. also, a walker requires quite a few motors. a quadruped with two degrees of freedom per leg will need eight. servos would be preferred over continuous rotation motors so that you could control joint position without adding sensors at every joint. at eight motors, of course, you will have used all the motor outputs on the controller and would have to code your own pwm, (not so hard, except that the way the vex handles its pwn makes it difficult to time anything else.

my personal feeling is that the vex kit is all about rolling robots, but of course someone's bound to make me look an idiot. some things one must learn to accept.