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Technical Specifications
Last Updated: 2026-10-27
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | CYS-S2905 |
| Category | Hobby |
| Performance | |
| Torque |
7.2V
83.32 oz-in
6.00 kg-cm
0.6 N-m
6.0V
69.44 oz-in
5.00 kg-cm
0.5 N-m
Bottom 10%
|
| Speed |
7.4V
0.04 sec/60°
1,500.0 deg/s
250.0 RPM
6.0V
0.05 sec/60°
1,200.0 deg/s
200.0 RPM
Top 10%
|
| Stall Current | 3–3.2 A3000–3200 mAAverage |
| Physical | |
| Weight | 2.54 oz72.0 gBelow Average |
| Dimensions |
L 1.575 in W 0.787 in H 1.549 in L 40.0 mm W 20.0 mm H 39.3 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 90° |
| Pulse Cycle | 20 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 | Bottom 10% Stronger than 9% of 1055 Digital Standard servos at 6.0V |
| Speed | Top 10% Faster than 98% of 1038 Digital Standard servos at 6.0V |
| Weight | Below Average Lighter than 30% of 1872 Digital Standard servos |
| Stall Current | Average Lower draw than 51% of 569 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.57 W |
| Power Density | 1.337 W/in³ More power-dense than 26% of 1762 Digital Standard servos |
| Torque Density | 0.9644 oz-in/g Stronger than 3% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 36.17 oz-in/in³ Denser torque than 7% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.27778 (1/sec·g) Faster than 94% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 3.47 Better balanced than 4% of 1029 Digital Standard servos |
| Current-per-Torque Ratio | 0.0461 A/oz-in More efficient than 5% of 330 Digital Standard servos |
| Speed Gain per Volt | 17.86%/V More voltage-responsive (speed) than 66% of 868 Digital Standard servos |
| Voltage Range Width | 1.4 V Wider voltage range than 34% of 1552 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 33% of 501 Digital Standard servos |
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