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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | ECP-173 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
173.60 oz-in
12.50 kg-cm
1.2 N-m
6.0V
123.60 oz-in
8.90 kg-cm
0.9 N-m
Top 10%
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
6.0V
0.09 sec/60°
666.7 deg/s
111.1 RPM
Above Average
|
| Physical | |
| Weight | 0.81 oz23.0 gBottom 10% |
| Dimensions |
L 0.90 in W 0.47 in H 1.25 in L 22.9 mm W 11.9 mm H 31.8 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 5.00 mm |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1520 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | Waterproof |
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
| Torque | Top 10% Stronger than 97% of 349 Digital Micro servos at 6.0V |
| Speed | Above Average Faster than 72% of 347 Digital Micro servos at 6.0V |
| Weight | Bottom 10% Lighter than 3% of 597 Digital Micro servos |
Performance Analysis
| Shaft Power | 2.54–4.59 W |
| Power Density | 8.672 W/in³ More power-dense than 95% of 563 Digital Micro servos |
| Torque Density | 5.3739 oz-in/g Stronger than 95% of 349 Digital Micro servos |
| Torque-to-Volume Ratio | 233.76 oz-in/in³ Denser torque than 96% of 345 Digital Micro servos |
| Speed-to-Weight | 0.48309 (1/sec·g) Faster than 21% of 347 Digital Micro servos |
| Speed-Torque Trade-off | 11.12 Better balanced than 92% of 345 Digital Micro servos |
| Torque Gain per Volt | 16.86%/V More voltage-responsive (torque) than 52% of 290 Digital Micro servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 14% of 295 Digital Micro servos |
| Voltage Range Width | 2.4 V Wider voltage range than 56% of 496 Digital Micro servos |
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Reviews (5)
Includes 5 reviews aggregated from around the web.
There are few reviews for this servo on the web. Results are mixed among owners of small Arrma-class cars. One owner stripped it within 20 minutes and then stripped replacement gears again after light use, while others chose it because of the solid warranty or used it to replace a failed stock servo.
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