Tamiya 71121 2-Legged Walking Robot - Wind-Up STEM Kit  [71121]

Tamiya 71121 - Battery-Free Two-Leg Walker

This Tamiya 71121 kit is built around hands-on exploration of gears and motion. The walker moves without batteries thanks to a wind-up generator, and you can assemble it to resemble either an ostrich or a duck for a bit of custom styling.

Design Details and Operation

The kit is ideal for understanding how simple mechanisms translate crank motion into walking steps. The generator powers forward and reverse directions via the crank, and a 50cm cable links the generator to the chassis so you can operate it at a distance from the model.

Who Will Enjoy This Kit

Perfect for hobbyists, parents and students, the build encourages experimentation and practical learning about motion. The two design options let you personalise the finished model for display or careful play.