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Blue Bird BMS-A54H
Slim

Blue Bird BMS-A54H

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10
Identity
Brand Blue Bird
Category Hobby
Performance
Torque
7.4V 102.79 oz-in
6.0V 86.12 oz-in
4.8V 72.23 oz-in
Speed
7.4V 0.08 sec/60°
6.0V 0.10 sec/60°
4.8V 0.12 sec/60°
Physical
Weight 0.85 ozAverage
Dimensions L 1.181 in
W 0.394 in
H 1.165 in
Drivetrain
Motor Type Coreless
Gears Metal
Gear Spline/Teeth 25 T
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Pulse Cycle 4 ms
Neutral Position 1520 µs
Dead Band 1 µs
Refresh Rate 250 Hz
Control System PWM
Electrical & Environment
Operating Voltage 4.5–8.4 V
Power Source Ni-MH / Ni-CD / Li-Fe / Li-Po
Idle Current 0.003 A
Connectivity
Connector JR (Universal) estimate
Origin
Country of Origin Taiwan

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

WeightAverage
Lighter than 40% of 103 Digital Slim servos

Performance Analysis

Shaft Power 1.11–2.38 W
Power Density4.382 W/in³
More power-dense than 71% of 99 Digital Slim servos
Torque Density3.0096 oz-in/g
Torque-to-Volume Ratio133.24 oz-in/in³
Speed-to-Weight0.34722 (1/sec·g)
Speed-Torque Trade-off8.67
Voltage Range Width3.9 V
Wider voltage range than 89% of 93 Digital Slim servos

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