I finally uploaded pictures of my second Inchworm. This is exactly the same
geometry and circuitry as Inchworm ( http://www.brickshelf.com/cgi-bin/gallery.cgi?i=447935 ). It is just done with
better color choices, and tidier pneumatic hoses.
Inchworm walks by undulating its body. It has 7 segments to its body, separated
by six pneumatic piston actuators. The walking mechanism sends a compression
wave down the body, making the body look like it has a sine wave traveling
along. It is totally pneumatic, and needs only compressed air to travel.
This MOC made its first appearance at BrickFest2004.