Futaba BLS174SV

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-22

Identity
Brand
Product Number	FUTM0138
Category	Hobby
Discontinued	Yes
Performance
Torque	7.4V 133.00 oz-in 6.6V 122.00 oz-in 6.0V 108.00 oz-in Below Average
Speed	7.4V 0.09 sec/60° 6.6V 0.10 sec/60° 6.0V 0.11 sec/60° Average
Physical
Weight	1.87 ozAverage
Dimensions	L 1.87 in W 1.063 in H 0.98 in
Drivetrain
Motor Type	Brushless
Gears	Metal
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Control System	SBUS
Programmable	Yes
Electrical & Environment
Operating Voltage	6–7.4 V
Connectivity
Connector	Futaba J
Origin
Country of Origin	Tw

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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	Below Average Stronger than 24% of 186 Digital Low Profile servos at 6.0V
Speed	Average Faster than 37% of 183 Digital Low Profile servos at 6.0V
Weight	Average Lighter than 45% of 304 Digital Low Profile servos

Performance Analysis

Shaft Power	1.82–2.73 W
Power Density	1.403 W/in³ More power-dense than 10% of 273 Digital Low Profile servos
Torque Density	2.0377 oz-in/g Stronger than 15% of 185 Digital Low Profile servos
Torque-to-Volume Ratio	55.44 oz-in/in³ Denser torque than 9% of 186 Digital Low Profile servos
Speed-to-Weight	0.17153 (1/sec·g) Faster than 29% of 182 Digital Low Profile servos
Speed-Torque Trade-off	11.88 Better balanced than 40% of 183 Digital Low Profile servos
Torque Gain per Volt	16.53%/V More voltage-responsive (torque) than 52% of 164 Digital Low Profile servos
Speed Gain per Volt	15.87%/V More voltage-responsive (speed) than 59% of 163 Digital Low Profile servos
Voltage Range Width	1.4 V Wider voltage range than 29% of 276 Digital Low Profile servos