Xpert RC HS-6403-HV

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-26

Identity
Brand
Product Number	HS-6403-HV
Category	Hobby
Performance
Torque	8.4V 416.70 oz-in 7.4V 367.11 oz-in Above Average
Speed	8.4V 0.06 sec/60° 7.4V 0.07 sec/60° Top 10%
Stall Current	≥6 A
Physical
Weight	2.58 ozBelow Average
Dimensions	L 1.575 in W 0.787 in H 1.594 in
Case Material	Aluminum
Drivetrain
Motor Type	Brushless
Gears	Metal
Control & Signal
Refresh Rate	1000 Hz
Control System	PWM
Electrical & Environment
Operating Voltage	7.4–8.4 V
Origin
Country of Origin	USA

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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	Above Average Stronger than 84% of 1307 Standard servos at 7.4V
Speed	Top 10% Faster than 92% of 1289 Standard servos at 7.4V
Weight	Below Average Lighter than 19% of 2491 Standard servos

Performance Analysis

Shaft Power	9.70–12.43 W
Power Density	6.290 W/in³ More power-dense than 71% of 32 Xpert RC servos
Torque Density	5.0152 oz-in/g 1st-highest torque density of 25 Xpert RC servos
Torque-to-Volume Ratio	185.80 oz-in/in³ 1st-highest torque-to-volume ratio of 27 Xpert RC servos
Speed-to-Weight	0.19516 (1/sec·g) Faster than 33% of 25 Xpert RC servos
Speed-Torque Trade-off	25.70 3rd-highest speed-torque trade-off of 27 Xpert RC servos
Torque Gain per Volt	13.51%/V More voltage-responsive (torque) than 4% of 27 Xpert RC servos
Speed Gain per Volt	12.90%/V More voltage-responsive (speed) than 4% of 27 Xpert RC servos
Voltage Range Width	1.0 V Wider voltage range than 3% of 32 Xpert RC servos