Tamiya 71111 Robocraft Mechanical Pig walking kit  [71111]

Tamiya 71111 Mechanical Pig: Gearbox walking model with head-shake

The Mechanical Pig is part of Tamiya's Robocraft STEM lineup and is offered as a buildable walking model driven by a compact gearbox and motor that produce a forward gait plus a head-shake motion. The body and head pieces are molded in pink semi-transparent plastic to showcase internal components while keeping the exterior visibly distinct from standard opaque kits.

Assembly is straightforward for hobbyists and supervised classroom groups familiar with snap-fit parts and basic screw fittings. The kit contains a compact gearbox, motor and a reverse switch so the model can be tested walking in either direction. A small flag accessory and a manual screwdriver are included; the electrical supply is one R04/AAA/UM4 battery (sold separately).

Running advice for users: operate the model on flat, smooth surfaces. Avoid slopes, rough concrete or thick carpet that can impede the walking mechanism. Consider this kit as an instructive example of small-gear gearbox layout and compact linkage rather than a performance platform for tuning.

As a compact STEM model, the Mechanical Pig suits builders who want a simple gearbox project with visible linkages and an amusing head-shake for classroom demonstration or desktop display.