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Technical Specifications
Last Updated: 2026-10-22
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-0918 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
277.60 oz-in
19.99 kg-cm
2.0 N-m
7.4V
235.96 oz-in
16.99 kg-cm
1.7 N-m
6.0V
194.32 oz-in
13.99 kg-cm
1.4 N-m
Average
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
7.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
6.0V
0.09 sec/60°
666.7 deg/s
111.1 RPM
Above Average
|
| Physical | |
| Weight | 2.47 oz70.0 gAverage |
| Dimensions |
L 1.595 in W 0.787 in H 1.496 in L 40.5 mm W 20.0 mm H 38.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T estimate |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 100° |
| Pulse Cycle | 3.003 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1500 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–65 °C14–149 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 330 mm12.99 in |
| Origin | |
| Country of Origin | China |
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 43% of 1055 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 84% of 1038 Digital Standard servos at 6.0V |
| Weight | Average Lighter than 35% of 1872 Digital Standard servos |
Performance Analysis
| Shaft Power | 3.99–7.33 W |
| Power Density | 3.904 W/in³ More power-dense than 70% of 1762 Digital Standard servos |
| Torque Density | 2.7760 oz-in/g Stronger than 38% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 103.45 oz-in/in³ Denser torque than 44% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.15873 (1/sec·g) Faster than 77% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 17.49 Better balanced than 29% of 1029 Digital Standard servos |
| Torque Gain per Volt | 17.86%/V More voltage-responsive (torque) than 68% of 868 Digital Standard servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 27% of 868 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 58% of 1552 Digital Standard servos |
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Reviews (3)
Includes 3 reviews aggregated from around the web.
There are few reviews for this servo on the web. German helicopter forum members report tight, play-free and quiet servos after about 50 flights, while one owner had a unit fail after roughly 50 flights in a Diabolo 700.
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