A highly versatile system for high torque or high RPM applications.
Get exactly the speed your robot requires.
The RC-260 motor included in this set utilizes carbon brushes for long motor life.
Two different crank arms and one shaft extender are included.
Combining the gearbox segments in various ways enables 8 different gear ratios (4:1, 5:1, 16:1, 20:1, 25:1, 80:1, 100:1, 400:1). Multiple sets can increase the ratio even more.
At a gear ratio of 400:1 and voltage of 3V, the gearbox produces a torque of about 6kg-cm (83oz-in); plenty for small robot lifting or clamping arms.

3V operational specifications:
No-load speed: 10,500 rpm
Motor stall torque: 15g-cm (0.21oz-in)
Stall current: 1.0A
Weight: 77.96 grams (2.75oz) with 400:1 gearbox combination. (Removing stages reduces weight)
Can be run safely up to 8.4V