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

Practical Uses for the Tamiya 69912 Gearbox

The Tamiya 69912 Double Gearbox serves as a hands-on learning component for mechanical and robotics experiments. Its transparent ABS case shows the internal gearing and the separate motor drives allow independent operation of each side, which is useful for straightforward R/C style mechanisms and small utility machines.

Independent Drive and Gear Ratio Options

Four gear ratios are available: 12.7:1, 38.2:1, 114.7:1 and 344.2:1, so users can vary speed and torque for different tasks. The set includes Type 130 motors to demonstrate how motor selection affects output performance and efficiency.

Integration with Tamiya Systems

This gearbox is compatible with many Tamiya construction and educational kits, easing its use in larger assemblies. Standard 3mm hex output shafts enable straightforward coupling to other drive elements and custom fittings.