Pololu Tamiya 70097 Twin-Motor Gearbox Kit

The Tamiya twin-motor gearbox is a compact plastic gearbox featuring two small brushed DC motors that drive independent 3 mm hexagonal output shafts. It offers flexibility with two assembly options: a high-speed 58:1 gear ratio or a slower 203:1 gear ratio, providing sufficient power for small robotics applications.

This versatile gearbox is ideal for a range of robotics projects. Whether building a small robot or a custom vehicle, the dual assembly options allow for tailored speed and torque configurations. The 3 mm hexagonal axles are compatible with various Tamiya wheels, enabling customization of your robot's speed and maneuverability.

The low-voltage motors operate on 3-6 volts and can draw up to a few amps, making them suitable for use with motor drivers like the DRV8833. It's important to monitor motor activity to prevent overheating from stalling, ensuring optimal performance and longevity.

For those looking to adapt the gearbox for different controllers, the motors can be swapped for lower-current, higher-voltage alternatives. This flexibility allows integration with controllers such as the TB6612FNG dual motor driver carrier or the Baby Orangutan B-328 robot controller.

When compared to the Tamiya double gearbox, the twin-motor version offers complementary gear ratio options, though it differs slightly in size and mounting configurations. While the double gearbox is more compact and robust, the twin-motor gearbox remains reliable, with no reported issues of gear failure.

Note: The twin-motor gearbox is a kit and requires assembly. To utilize it in robotics projects, the motors need to be connected to a suitable robot controller.