Tamiya 69911 Single Gearbox 4-Speed Clear STEM Kit  [69911]

Product overview for Tamiya 69911 Single Gearbox

The Tamiya 69911 Single Gearbox is part of a STEM-focused component range made to deliver practical learning moments. The transparent housing lets students and hobbyists watch gears meshing and learn mechanical basics by observation and experimentation.

Construction and operation details

Built from robust materials including an ABS resin case, this gearbox is designed for repeated classroom use and home projects. It provides four distinct gear ratios: 12.7:1, 38.2:1, 114.7:1, and 344.2:1, so you can test a range of speed and torque setups. Its compact footprint makes it easy to fit into many small-scale builds.

Parts, motor and kit fitment

The assembly ships with a Type 130 motor and includes left and right 3mm hex output shafts for straightforward hookup. The unit mates well with a variety of Tamiya construction kits, making it a flexible choice for extending STEM lessons or DIY models.