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Technical Specifications
Last Updated: 2026-09-14
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | 2121 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
4.8V72.21 oz-in5.20 kg-cm0.5 N-m |
| Speed |
4.8V0.21 sec/60°285.7 deg/s47.6 RPM |
| Physical | |
| Weight | 1.48 oz42.0 gTop 10% |
| Dimensions |
L 1.398 in W 0.748 in H 1.516 in L 35.5 mm W 19.0 mm H 38.5 mm |
| Drivetrain | |
| Motor Type | 3-pole |
| Gears | Plastic |
| Gear Spline/Teeth | 23 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Control System | PWM |
| Connectivity | |
| Connector | JR (Universal) |
Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.
Class Comparison
| Weight | Top 10% Lighter than 94% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 0.64 W |
| Power Density | 0.401 W/in³ More power-dense than 2% of 1759 Digital Standard servos |
| Torque Density | 1.7193 oz-in/g |
| Torque-to-Volume Ratio | 45.55 oz-in/in³ |
| Speed-to-Weight | 0.11338 (1/sec·g) |
| Speed-Torque Trade-off | 15.16 |
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