Tamiya 70257 - Dual Mode Duck Model Kit (STEM)  [70257]

Tamiya 70257 Dual Mode Duck - Educational construction model

The Tamiya 70257 Walking & Swimming Duck combines a playful design with clear mechanical lessons. Built to operate both on land and in water, it is a practical project for hobbyists who value hands on learning and simple engineering.

Bobbing action and drive components

The duck uses a parallel linkage to recreate the nodding head motion, driven by a submarine motor. Key materials include white polyethylene for the head and body and gray polypropylene for the gearbox. Performance is about 25cm/s on land and about 6.5cm/s in water, with an approximate 1.5 hour run time on a single AAA battery (not included).

Assembly approach and finishing touches

Snap fit parts and screw attachments mean no glue is required, simplifying assembly for a range of skill levels. The kit includes waterproof stickers for the beak and eyes so you can customise the duck once it is complete.

Where it fits in a collection or lesson

As an Educational Construction series item, this model demonstrates mechanical linkages and compact motor drive in a way that is easy to display or use in practical demonstrations. It is well suited to small group activities or personal collections of animal models.