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Xpert RC SI-4401-HV
Standard

Xpert RC SI-4401-HV

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-10
Identity
Brand Xpert RC
Product Number (add)
Category Hobby
Performance
Torque
8.4V 261.13 oz-in
7.4V 230.02 oz-in
6.0V 186.54 oz-in
Speed
8.4V 0.08 sec/60°
7.4V 0.09 sec/60°
6.0V 0.11 sec/60°
Running Current (add)
Stall Current (add)
Physical
Weight 2.20 oz
Dimensions L 1.58 in
W 0.79 in
H 1.49 in
Case Material Aluminum
Drivetrain
Motor Type Brushless
Motor Drive (add)
Gears Metal
Gear Spline/Teeth (add)
Shaft Size (add)
Rotation Mode (add)
Rotation/Support (add)
Backlash (add)
Control & Signal
Modulation (add)
Direction (add)
Rotational Range (add)
Mechanical Limit (add)
Pulse Cycle (add)
Pulse Width (add)
Neutral Position 1520 µs
Dead Band (add)
Refresh Rate 333 Hz
Angle Sensor (add)
Control System PWM
Programmable (add)
Signal Voltage (add)
Electrical & Environment
Operating Voltage 6–8.4 V
Power Source (add)
Regulator Type (add)
Temperature (add)
Water Rating (add)
Certification (add)
Idle Current (add)
Connectivity
Connector (add)
Wire Length (add)
Origin
Country of Origin USA

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.

Performance Analysis

Shaft Power 3.11–6.11 W
Torque Density2.9846 oz-in/g
Stronger than 46% of the 25 Xpert RC servos in the database
Torque-to-Volume Ratio101.14 oz-in/in³
Denser torque than 31% of the 27 Xpert RC servos in the database
Power Density3.314 W/in³
More power-dense than 29% of the 32 Xpert RC servos in the database
Speed-to-Weight0.14414 (1/sec·g)
Faster than 17% of the 25 Xpert RC servos in the database
Speed-Torque Trade-off20.71
Better balanced than 73% of the 27 Xpert RC servos in the database
Torque Gain per Volt16.66%/V
More voltage-responsive (torque) than 27% of the 27 Xpert RC servos in the database
Speed Gain per Volt16.88%/V
More voltage-responsive (speed) than 62% of the 27 Xpert RC servos in the database
Voltage Range Width2.4 V
Wider voltage range than 81% of the 32 Xpert RC servos in the database

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