Blue Arrow S0251

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-23

Identity
Brand
Product Number	BA0251
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 1.67 oz-in 4.8V 1.25 oz-in 3.0V 0.83 oz-in Bottom 10%
Speed	6.0V 0.10 sec/60° 4.8V 0.11 sec/60° 3.0V 0.22 sec/60° Bottom 10%
Physical
Weight	0.10 ozTop 10%
Dimensions	L 0.77 in W 0.32 in H 0.64 in
Drivetrain
Gears	Plastic
Rotation/Support	Bushing
Control & Signal
Rotational Range	60°
Electrical & Environment
Operating Voltage	3–6 V
Connectivity
Connector	JST

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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	Bottom 10% Stronger than 0% of 528 Micro servos at 3.0V
Speed	Bottom 10% Faster than 2% of 527 Micro servos at 3.0V
Weight	Top 10% Lighter than 98% of 1097 Micro servos

Performance Analysis

Shaft Power	0.01–0.03 W
Power Density	0.196 W/in³ More power-dense than 2% of 193 Blue Arrow servos
Torque Density	0.2912 oz-in/g Stronger than 0% of 527 Micro servos
Torque-to-Volume Ratio	5.26 oz-in/in³ Denser torque than 0% of 527 Micro servos
Speed-to-Weight	1.59490 (1/sec·g) Faster than 82% of 526 Micro servos
Speed-Torque Trade-off	0.18 Better balanced than 1% of 524 Micro servos
Torque Gain per Volt	33.73%/V More voltage-responsive (torque) than 95% of 383 Micro servos
Speed Gain per Volt	40.01%/V 4th-highest speed gain per volt of 388 Micro servos
Voltage Range Width	3.0 V Wider voltage range than 48% of 150 Blue Arrow servos