Uploaded July 2013 | Updated September 2026, 1 week ago
This straight-legged LEGO walker descends a gentle 5° slope using only gravity—no motors, no power source.
A thin green rubber surface ensures traction, preventing the legs from slipping.
Unlike some passive dynamic walkers that require a tiled floor to accommodate leg swing, this model uses asymmetric “shoes.” The middle leg is shorter than the outer legs when tilting forward, but longer when tilting backward, allowing it to swing freely without needing a recessed surface.
Notice near the end of the video a passive dynamic walker which was one of my childhood toys.
Explore a collection of alkers which move by the force of gravity, and others by electric motor:
youtube.com/playlist?list=PLCbYhDNjOviHJ37GJJVISoi-F-lWsIuG_
#LegoMechanism #biped #PhysicsInMotion
This straight-legged LEGO walker descends a gentle 5° slope using only gravity—no motors, no power source.
A thin green rubber surface ensures traction, preventing the legs from slipping.
Unlike some passive dynamic walkers that require a tiled floor to accommodate leg swing, this model uses asymmetric “shoes.” The middle leg is shorter than the outer legs when tilting forward, but longer when tilting backward, allowing it to swing freely without needing a recessed surface.
Notice near the end of the video a passive dynamic walker which was one of my childhood toys.
Explore a collection of alkers which move by the force of gravity, and others by electric motor:
youtube.com/playlist?list=PLCbYhDNjOviHJ37GJJVISoi-F-lWsIuG_
#LegoMechanism #biped #PhysicsInMotion
