The STEAM AK4221 is a 13T motor pinion gear for the AK420 helicopter, precision CNC-machined from a special copper alloy. It is supplied with one Φ8.5×Φ14×20mm gear and two M3.0×6mm set screws. The retaining ring is not included.
The STEAM AK4221 motor pinion gear is designed for the AK420 helicopter. Its 13T gear is precision CNC-machined from a special copper alloy. The package supplies one gear measuring Φ8.5×Φ14×20mm and two M3.0×6mm set screws. The retaining ring is not included.
| Specification | Value & conditions |
|---|---|
| Model | AK4221 |
| Product type | AK420 motor pinion gear |
| Tooth count | 13T |
| Compatibility | AK420 helicopter |
| Material and manufacture | Special copper alloy, fully precision CNC-machined |
| Supplied gear | 1 × AK420 motor pinion gear, Φ8.5×Φ14×20mm |
| Supplied screws | 2 × M3.0×6mm set screws |
| Excluded equipment | Retaining ring not included |
