The Solarbotics GM8 Gear Motor has a 143:1 gear ratio and an offset shaft.
The 143:1 gear ratio allows this motor to run about twice as fast as the similar Solarbotics GM2 Gear Motor. When running at 3V without a load, this motor spins at 40 rounds per minute drawing only 50mA. This motor features a built in safety clutch.
The shaft on this motor has a diameter of 7mm and is flat on two sides and fits the Solarbotics Gear Motor Wheels perfectly. The shaft on this motor is just a bit shorter than the similar GM2.
Note: the green shaft is not designed to take a rotational load and should not be used.
|Motor Voltage||3-12 V|
|No-Load Current at 3V||50 mA|
|No-Load Speed at 3V||40 RPM|
|Stall Current at 3V||400 mA|
|Stall Torque at 3V||3.2 kg-cm (44.4 oz-in)|
|No-Load Current at 6V||52 mA|
|No-Load Speed at 6V||78 RPM|
|Stall Current at 6V||700 mA|
|Stall Torque at 6V||5.5 kg-cm (76.4 oz-in)|
|Shaft Diameter||7 mm (0.3 in) two sides flattened|
|Size||55 x 48 x 23 mm (2.2 x 1.9 x 0.9 in)|
|Weight||31.5 g (1.13 oz)|