Corona CS239HV

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Technical Specifications

Last Updated: 2026-10-23

Identity
Brand
Product Number	CS239HV
Category	Hobby
Performance
Torque	7.4V 63.88 oz-in 6.0V 55.55 oz-in Average
Speed	7.4V 0.13 sec/60° 6.0V 0.14 sec/60° Average
Physical
Weight	0.78 ozAverage
Dimensions	L 1.181 in W 0.394 in H 1.358 in
Drivetrain
Motor Type	Brushed
Gears	Metal
Rotation Mode	Positional
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Analog
Rotational Range	80°
Dead Band	5 µs
Angle Sensor	Potentiometer
Control System	PWM
Electrical & Environment
Operating Voltage	6–7.4 V
Temperature	-20–60 °C
Connectivity
Connector	JR (Universal) estimate
Wire Length	215 mm
Origin
Country of Origin	China

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Average Stronger than 40% of 46 Slim servos at 6.0V
Speed	Average Faster than 61% of 47 Slim servos at 6.0V
Weight	Average Lighter than 49% of 97 Slim servos

Performance Analysis

Shaft Power	0.73–0.91 W
Power Density	1.439 W/in³ More power-dense than 69% of 55 Corona servos
Torque Density	2.5250 oz-in/g Stronger than 47% of 54 Corona servos
Torque-to-Volume Ratio	87.95 oz-in/in³ Denser torque than 66% of 54 Corona servos
Speed-to-Weight	0.32468 (1/sec·g) Faster than 56% of 53 Corona servos
Speed-Torque Trade-off	7.78 Better balanced than 48% of 53 Corona servos
Torque Gain per Volt	10.71%/V More voltage-responsive (torque) than 31% of 50 Corona servos
Speed Gain per Volt	5.48%/V More voltage-responsive (speed) than 15% of 49 Corona servos
Voltage Range Width	1.4 V Wider voltage range than 70% of 54 Corona servos