The 21-130 unassembled gearbox kit comes with the motor, two sets of gears, metal shafts, gearbox and other accessories.
Use a different gear setting and you will have a different speed (see the table below for details).
Master Dimensions (inches):
- 14x14x16
- 6.25x4.75x1.5
- 12.1
- 0.2
Detailed specifications:
Gear Set 1: Gear Ratio 1:60 -
| Gear Ratio | Gear | Teeth | I.D. |
| 1:60 | Pinion Gear | 10T | 1.9mm |
| Face Gear | 36T/14T | 2.05mm | |
| Double Spur Gear | 36T/14T | 3.05mm | |
| Double Spur Gear | 36T/14T | 3.05mm | |
| Double Spur Gear | 36T/14T | 3.05mm | |
| Spur Gear | 36T/0T | 2.9mm | |
| Reduction RPM | 41.6 | ||
Gear Set 2: Gear Ratio 1:288 -
| Gear Ratio | Gear | Teeth | I.D. |
| 1:288 | Pinion Gear | 8T | 1.9mm |
| Face Gear | 36T/10T | 2.05mm | |
| Double Spur Gear | 40T/10T | 3.05mm | |
| Double Spur Gear | 40T/10T | 2.05mm | |
| Spur Gear | 40T/0T | 2.9mm | |
| Reduction RPM | 41.6 | ||
