Tamiya 69912 Double Gearbox Kit - Transparent Educational Gearbox  [69912]

Transparent double gearbox for mechanical learning

The Tamiya 69912 Double Gearbox gives builders a clear view of internal gear action, perfect for classroom demonstrations and solo projects. Its see-through ABS resin case and dual motor layout allow separate control of each side, making it a practical choice for small robots and construction-style models.

Four gear choices for speed and torque testing

Users can select from four gear ratios: 12.7:1, 38.2:1, 114.7:1, and 344.2:1 to tailor performance to load or speed requirements. The gearbox is compatible with Type 130 motors, a common choice for educational builds that explore gear reduction and mechanical advantage.

Compatibility with kits and custom builds

The 3mm hex output shafts are ready for simple attachment to wheels, sprockets or adapter hubs, and the unit pairs well with many Tamiya construction and robotics parts for experimenting with drive layouts.