This is a Planetary Gear Set from the Technicraft Series by Tamiya.
FEATURES: A highly versatile system for reduction of high RPM electric motors
to high-torque low RPM applications.
Often used in precision instruments because of the reliability and
accuracy of the unit.
The RC-260 motor included in this set utilizes carbon brushes for
long motor life.
RC-260 motor operates on 3 volts.
Combining the gearboxes in various ways enables 8 different gear
ratios (4:1, 5:1, 16:1, 20:1, 25:1, 80:1, 100:1, 400:1).
At a gear ratio of 400:1 and voltage of 3V, the gearbox produces
a torque of about 15 kg.
Pictorial instruction sheet included.
INCLUDES: One Technicraft Planetary Gear Set.
SPECS: Motor Specs: Operation Voltage: 3.0V
On-Load Speed: 10,500 RPM
Stall Torque: 15 gcm
COMMENTS: Keep away from children under 3 years of age due to choking hazard.