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Blue Bird BMS-126WV+
Micro

Blue Bird BMS-126WV+

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-23
Identity
Brand Blue Bird
Category Hobby
Performance
Torque
8.4V 90.29 oz-in
7.4V 80.56 oz-in
6.0V 65.28 oz-in
3.7V 43.06 oz-in
Speed
8.4V 0.07 sec/60°
7.4V 0.08 sec/60°
6.0V 0.10 sec/60°
3.7V 0.16 sec/60°
Physical
Weight 0.39 ozAverage
Dimensions L 0.913 in
W 0.394 in
H 0.906 in
Case Material Nylon
Drivetrain
Motor Type Coreless
Gears Metal
Gear Spline/Teeth 25 T
Rotation Mode Positional
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Direction Clockwise
Rotational Range 120°
Mechanical Limit 90°
Pulse Cycle 4 ms
Pulse Width 900-2100 µs
Neutral Position 1500 µs
Dead Band 2 µs
Refresh Rate 250 Hz
Angle Sensor Potentiometer
Control System PWM
Programmable No
Electrical & Environment
Operating Voltage 3.6–8.4 V
Power Source LiPo | LiFe
Temperature 0–40 °C
Connectivity
Connector JR (Universal)
Wire Length 160 mm
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 48% of 597 Digital Micro servos

Performance Analysis

Shaft Power 0.50–2.38 W
Power Density7.318 W/in³
More power-dense than 91% of 563 Digital Micro servos
Torque Density3.9146 oz-in/g
Torque-to-Volume Ratio132.12 oz-in/in³
Speed-to-Weight0.56818 (1/sec·g)
Speed-Torque Trade-off6.89
Voltage Range Width4.8 V
Wider voltage range than 97% of 496 Digital Micro servos
Dead-Band-to-Pulse-Width Ratio0.0017
Finer dead band than 43% of 182 Digital Micro servos

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Reviews (1)

Includes 1 review aggregated from around the web.

There are very few reviews for this servo on the web. One UK retailer customer calls it a powerful little servo at a reasonable price, but warns not to leave it stalled for too long.

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