The Tamiya 70097 twin-motor gearbox is a small (3-inch long) plastic gearbox. It contains two small DC motors that drive separate 3mm hexagonal output shafts.

There are two ways to put the kit together: with a high-speed 58:1 gear ratio or with a slower 203:1 gear ratio.

Either way, the motors provide plenty of power to drive any small robot.

For a gearbox with a similar form factor and more gear ratio options, see the Tamiya #70168 double gearbox Product Code 114.

SPECIFICATION
 

• Typical operating voltage:  3 V 
• Gear ratio options:  58:1 and 204:1 
• Free-run motor shaft speed @ 3V:  12300 rpm1 
• Free-run current @ 3V:  150 mA2 
• Stall current @ 3V:  2100 mA 
• Motor shaft stall torque @ 3V:  0.5 oz·in3 
• Colour:  grey