Tamiya 70188 Mini Motor Gearbox 8-Speed Hobby Module  [70188]

Tamiya 70188 Mini Motor Gearbox - 8-Speed: Versatile Hobby Drive

The Tamiya 70188 mini gearbox is a versatile drive unit for hobbyists looking to test gear trains and mechanical setups. Its eight selectable gears let builders explore different speed and torque combinations on small projects.

Design Notes and Motor

Equipped with a type 030 motor, the gearbox offers low power consumption and quiet operation. The see-through case keeps the internals safe while allowing close inspection during tuning or fault finding.

Compatibility and Mounting

The output uses a 3mm hex and the case includes standard attachment holes so it mates well with other Tamiya components and compact models, including compatible scale kits used for experimentation and prototyping.

How to Change Ratios

There are eight ratio settings from 7.5:1 to 87.8:1, letting you tailor drive characteristics. Swap the pinion and final gear positions to adjust ratios and observe how changes affect performance.