Blue Arrow S0251

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Compatible Hardware

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*Based on known specs.

Technical Specifications

Last Updated: 2026-11-05

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 ozAbove Average
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 3% of 67 Nano servos at 3.0V
Speed	Bottom 10% Faster than 3% of 66 Nano servos at 3.0V
Weight	Above Average Lighter than 75% of 178 Nano servos

Performance Analysis

Shaft Power	0.01–0.03 W
Power Density	0.196 W/in³ More power-dense than 1% of 193 Blue Arrow servos
Torque Density	0.2912 oz-in/g Stronger than 0% of 67 Nano servos
Torque-to-Volume Ratio	5.26 oz-in/in³ Denser torque than 0% of 67 Nano servos
Speed-to-Weight	1.59490 (1/sec·g) Faster than 17% of 66 Nano servos
Speed-Torque Trade-off	0.18 Better balanced than 9% of 66 Nano servos
Torque Gain per Volt	33.73%/V More voltage-responsive (torque) than 82% of 40 Nano servos
Speed Gain per Volt	40.01%/V 4th-highest speed gain per volt of 37 Nano servos
Voltage Range Width	3.0 V Wider voltage range than 50% of 152 Blue Arrow servos