CYS S2109

Search Amazon Search eBay

Compatible Hardware

Amazon eBay

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-27

Identity
Brand
Product Number	CYS-S2109
Category	Hobby
Performance
Torque	7.4V 152.76 oz-in 6.0V 138.87 oz-in Below Average
Speed	7.4V 0.08 sec/60° 6.0V 0.09 sec/60° Above Average
Running Current	7.4V 0.120 A 6.0V 0.100 A Top 10%
Stall Current	2.5–2.8 AAbove Average
Physical
Weight	1.90 ozAbove Average
Dimensions	L 1.579 in W 0.791 in H 1.535 in
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 °C
Idle Current	0.020 A
Connectivity
Connector	JR (Universal)
Wire Length	300 mm
Origin
Country of Origin	China

Submit Missing Data Report an Error

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.

Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Below Average Stronger than 28% of 1060 Digital Standard servos at 6.0V
Speed	Above Average Faster than 84% of 1045 Digital Standard servos at 6.0V
Weight	Above Average Lighter than 79% of 1880 Digital Standard servos
Running Current	Top 10% Lower draw than 92% of 226 Digital Standard servos at 6.0V
Stall Current	Above Average Lower draw than 68% of 570 Digital Standard servos

Performance Analysis

Shaft Power	2.85–3.53 W
Power Density	1.842 W/in³ More power-dense than 40% of 1768 Digital Standard servos
Torque Density	2.5717 oz-in/g Stronger than 34% of 1053 Digital Standard servos
Torque-to-Volume Ratio	72.43 oz-in/in³ Denser torque than 28% of 1058 Digital Standard servos
Speed-to-Weight	0.20576 (1/sec·g) Faster than 88% of 1038 Digital Standard servos
Speed-Torque Trade-off	12.50 Better balanced than 18% of 1034 Digital Standard servos
Current-per-Torque Ratio	0.0202 A/oz-in More efficient than 28% of 331 Digital Standard servos
Idle-to-Running Current Ratio	0.200 Lower idle draw than 20% of 167 Digital Standard servos
No-Load vs Stall Current Spread	28.00 Narrower current spread than 35% of 179 Digital Standard servos
Torque Gain per Volt	7.14%/V More voltage-responsive (torque) than 8% of 873 Digital Standard servos
Speed Gain per Volt	8.92%/V More voltage-responsive (speed) than 10% of 874 Digital Standard servos
Voltage Range Width	1.4 V Wider voltage range than 36% of 1560 Digital Standard servos
Dead-Band-to-Pulse-Width Ratio	0.0020 Finer dead band than 36% of 504 Digital Standard servos