Tamiya 69912 Double Gearbox Kit — Clear ABS Case with Independent 4-Speed  [69912]

Tamiya 69912: Educational and Hobby Applications

The Tamiya 69912 Double Gearbox is a compact teaching and prototyping unit that makes internal gear movement visible and understandable. Its twin motor configuration allows each side to be controlled separately, which is handy for simple robotic drives and compact tracked or wheeled models.

Independent Control and Ratio Selection

Selectable gear ratios are 12.7:1, 38.2:1, 114.7:1 and 344.2:1, so builders can choose the appropriate balance of speed and torque. The supplied Type 130 motors help illustrate how gearing alters output under load in practical experiments.

Compatibility Notes and Outputs

This gearbox is designed to integrate with a variety of Tamiya construction and robotics kits, simplifying assembly into larger projects. The 3mm hex output shafts allow easy attachment to wheels, gears and other hobby accessories.