Tamiya 89917 Clear Single Gearbox STEM Kit - Classroom Friendly  [89917]

Inside view of the Tamiya 89917 single gearbox

The Tamiya 89917 Single Gearbox is a compact unit made for hobbyists and students who want to study basic mechanics. The transparent housing lets you watch gears turn and interact, helping to visualise gear ratios and mechanical efficiency during experiments or workshops.

Visible mechanics and layout

The gearbox uses a clear case to give full sight of internal gear trains and their engagement. It works well in hands-on STEM sessions where seeing parts move improves understanding. The simple construction also makes it flexible for hobby projects and bench setups.

Compatibility and workshop use

This gearbox mates with many Tamiya components, letting you expand models or build custom rigs. Assembly is straightforward for newcomers, yet the unit still provides instructive insights for more experienced builders testing gear behaviour.