Walking Gyroscope (Gyroman)

A toy that walks thanks to the gyroscopic effect. A spinning flywheel (weighted with coins) drives a cam that lifts each foot in turn; every time a foot goes down, the body precesses one way, then the other, and it walks.

A demonstration of angular momentum and precession that students will not forget.

Design by LoboCNC on Printables, shared under CC BY-SA 4.0. The files and photos are the designer's, unchanged.

1. Print all parts in the orientation shown, without supports.
2. Follow the parts list and assembly steps on the original page; you need coins for the flywheel mass.
3. Spin it up with the pull ring and watch it walk; ask students why it turns instead of falling.