Tamiya 71114 Mechanical Blowfish STEM Motion Kit  [71114]

Tamiya 71114 Mechanical Blowfish Hands-On STEM Build

The Tamiya 71114 Mechanical Blowfish blends basic mechanics and aquatic movement to create an engaging STEM project. Builders can learn simple engineering concepts while watching the model glide in water.

Crank Drive and Visible Mechanics

This kit uses a crank and linkage rod arrangement to swing the tail fin and drive the blowfish through water. The translucent green back reveals the moving parts so users can study the mechanism, while the white underside contains the motor, gearbox, battery box, and switch in a water-resistant assembly.

Sealed for Water Use

Critical openings are protected with waterproof tape and rubber O-rings around screw holes, the power switch, and tail joint to reduce water entry. These measures help keep the internal components safe during extended runs in water.

Tweak Tail Motion for Different Tracks

Swim direction is set by turning the stopper at the tail base left or right to change the angle. The tail material is simple to trim, letting hobbyists experiment with shape and stiffness to fine tune swimming behaviour.