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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | CYS-S2109 |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
138.87 oz-in
10.00 kg-cm
1.0 N-m
6.0V
124.99 oz-in
9.00 kg-cm
0.9 N-m
Below Average
|
| Speed |
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
|
| Stall Current | 2.5–2.8 A2500–2800 mAAbove Average |
| Physical | |
| Weight | 1.90 oz54.0 gAbove Average |
| Dimensions |
L 1.579 in W 0.791 in H 1.535 in L 40.1 mm W 20.1 mm H 39.0 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 90° |
| Pulse Cycle | 50 ms |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–7.4 V |
| Temperature | -10–50 °C14–122 °F |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 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 | Below Average Stronger than 25% of 1043 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 84% of 1041 Digital Standard servos at 6.0V |
| Weight | Above Average Lighter than 78% of 1902 Digital Standard servos |
| Stall Current | Above Average Lower draw than 67% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.57–3.21 W |
| Power Density | 1.674 W/in³ More power-dense than 36% of 1759 Digital Standard servos |
| Torque Density | 2.3146 oz-in/g Stronger than 28% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 65.19 oz-in/in³ Denser torque than 23% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.20576 (1/sec·g) Faster than 86% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 11.25 Better balanced than 16% of 1031 Digital Standard servos |
| Current-per-Torque Ratio | 0.0224 A/oz-in More efficient than 27% of 315 Digital Standard servos |
| Torque Gain per Volt | 7.93%/V More voltage-responsive (torque) than 11% of 850 Digital Standard servos |
| Speed Gain per Volt | 8.92%/V More voltage-responsive (speed) than 11% of 871 Digital Standard servos |
| Voltage Range Width | 1.4 V Wider voltage range than 36% of 1539 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 34% of 468 Digital Standard servos |
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