The Tamiya 70259 Walking & Swimming Penguin is a compact Robocraft STEM model that shows how rotational drive becomes natural movement. It is aimed at hobbyists and school-age builders who want a practical example of kinematics while having fun building a characterful penguin model.
The kit converts the rotation of the included submarine motor into linked leg motion, driving side wheels on each leg plus a centre front wheel to create a waddling motion on land. In water the flippers turn to propel the model forward while a small float at the neck keeps the balance you need for steady swimming.
You can alter directional movement by changing the alignment of wheels and flippers, which helps explain steering concepts in a hands-on way. The plastic components accept paint, so builders can personalise colours and markings after assembly.
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