Tamiya 72009 - Educational 5-Speed Twin Gearbox H.E. Kit for Makers  [72009]

Introducing the Tamiya 72009 5-Speed Twin Gearbox H.E.

The Tamiya 72009 5-Speed Twin Gearbox H.E. is designed for makers exploring mechanical systems and small-scale robotics. It gives five selectable gear ratios - 6.1:1, 15.6:1, 40.2:1, 103.3:1 and 265.6:1 - so users can experiment with different speed and torque combinations.

Construction and practical features

The twin layout has independent left and right modules that clip together, simplifying construction and modification. Each side includes five mounting sections with three holes each, enabling varied attachments. Clutch gears fitted to the 103.3:1 and 265.6:1 options help guard against overload and protect the train.

Applications and motor compatibility

With hex hubs fitted, the gearbox accepts cruciform crank arms and standard R/C wheels, useful for small vehicle or mechanism builds. The kit includes two Type 260 motors and also supports Type 130 and Type 140 motors to match different project requirements.