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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | B5S |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
277.80 oz-in
20.00 kg-cm
2.0 N-m
7.4V
250.02 oz-in
18.00 kg-cm
1.8 N-m
6.0V
222.24 oz-in
16.00 kg-cm
1.6 N-m
Average
|
| Speed |
8.4V
0.05 sec/60°
1,200.0 deg/s
200.0 RPM
7.4V
0.06 sec/60°
1,090.9 deg/s
181.8 RPM
6.0V
0.07 sec/60°
923.1 deg/s
153.8 RPM
Top 10%
|
| Physical | |
| Weight | 2.36 oz67.0 gAverage |
| Dimensions |
L 1.61 in W 0.81 in H 1.51 in L 40.9 mm W 20.6 mm H 38.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Titanium / Steel |
| Gear Spline/Teeth | 25 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1520 µs |
| Refresh Rate | 333 Hz |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -20–60 °C-4–140 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Origin | |
| Country of Origin | Hong Kong |
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 | Average Stronger than 52% of 1060 Digital Standard servos at 6.0V |
| Speed | Top 10% Faster than 93% of 1045 Digital Standard servos at 6.0V |
| Weight | Average Lighter than 40% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 6.32–10.27 W |
| Power Density | 5.217 W/in³ More power-dense than 81% of 1768 Digital Standard servos |
| Torque Density | 3.3170 oz-in/g Stronger than 48% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 112.86 oz-in/in³ Denser torque than 49% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.22962 (1/sec·g) Faster than 91% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 14.45 Better balanced than 23% of 1034 Digital Standard servos |
| Torque Gain per Volt | 10.42%/V More voltage-responsive (torque) than 20% of 873 Digital Standard servos |
| Speed Gain per Volt | 12.50%/V More voltage-responsive (speed) than 31% of 874 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 54% of 1560 Digital Standard servos |
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Reviews (4)
Includes 4 reviews aggregated from around the web.
There are few reviews for this servo on the web. A Reddit user who installed it in his 2WD buggy calls it quite impressive, and a retailer lists 1 customer review.
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