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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | REEFS171 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
55.00 oz-in
3.96 kg-cm
0.4 N-m
7.4V
48.00 oz-in
3.46 kg-cm
0.3 N-m
6.0V
41.00 oz-in
2.95 kg-cm
0.3 N-m
|
| Speed |
8.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
7.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
|
| Running Current |
8.4V
0.280 A
280 mA
7.4V
0.240 A
240 mA
6.0V
0.200 A
200 mA
4.8V
0.180 A
180 mA
Below Average
|
| Physical | |
| Weight | 0.67 oz19.0 gBelow Average |
| Dimensions |
L 0.90 in W 0.50 in H 0.86 in L 22.9 mm W 12.7 mm H 21.8 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Dead Band | 3 µs |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 4.8–8.4 V |
| Temperature | -15–70 °C5–158 °F |
| Water Rating | Waterproof |
| Connectivity | |
| Connector | JR (Universal) estimate |
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 | Below Average Lighter than 21% of 665 Digital Micro servos |
| Running Current | Below Average Lower draw than 35% of 67 Digital Micro servos at 4.8V |
Performance Analysis
| Shaft Power | 0.69–1.27 W |
| Power Density | 3.285 W/in³ More power-dense than 65% of 625 Digital Micro servos |
| Torque Density | 2.1579 oz-in/g |
| Torque-to-Volume Ratio | 105.94 oz-in/in³ |
| Speed-to-Weight | 0.47847 (1/sec·g) |
| Speed-Torque Trade-off | 4.51 |
| Voltage Range Width | 3.6 V Wider voltage range than 82% of 553 Digital Micro servos |
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Reviews (7)
Includes 7 reviews aggregated from around the web.
There are very few reviews for this servo on the web. A Reddit owner who fitted it to replace a stripped TRX4M servo says it lacks power, especially when returning to center from full lock.
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