Tamiya 70256 Bipedal Walking Robot Educational Model  [70256]

Tamiya 70256 Bipedal Walking Robot - Practical STEM Model

The Tamiya 70256 Bipedal Walking Robot is a practical STEM kit aimed at modelers who want to learn the basics of mechanical motion. It provides a clear example of how changing balance and timing produces forward movement.

How it Moves

Made from durable ABS, the design uses a dedicated weight transfer unit to shift balance and produce a stepping action. Movement is driven by a low RPM type 130 motor, which pushes the legs forward while the frame rocks to create motion.

Assembly Advice and Mods

Assembly combines snap-fit pieces with screws for a solid finish, and the pre-drilled leg and slide holes make it straightforward to add aftermarket parts. Builders should set aside roughly 2 to 3 hours to assemble the kit, rated about 3 out of 5 for complexity.

Handling and Adjustments

The 114.7:1 gear ratio yields a pace of about 4.8 cm/s, best on even floors. Adjust the gearbox angle to steer, tweak leg limiters to change stride and tilt, and attach the optional guide rod to help the robot avoid small obstructions.