Futaba BLS171SV

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-08

Identity
Brand
Product Number	FUTM0135
Category	Hobby
Discontinued	Yes
Performance
Torque	7.4V 164.00 oz-in 6.6V 147.00 oz-in 6.0V 133.00 oz-in Below Average
Speed	7.4V 0.10 sec/60° 6.6V 0.11 sec/60° 6.0V 0.13 sec/60° Average
Physical
Weight	1.69 ozAbove Average
Dimensions	L 1.575 in W 0.787 in H 1.37 in
Case Material	Metal
Drivetrain
Motor Type	Brushless
Gears	Metal
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Control System	SBUS2
Programmable	Yes
Electrical & Environment
Operating Voltage	6–7.4 V
Connectivity
Connector	Futaba J

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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 27% of 1043 Digital Standard servos at 6.0V
Speed	Average Faster than 56% of 1041 Digital Standard servos at 6.0V
Weight	Above Average Lighter than 89% of 1902 Digital Standard servos

Performance Analysis

Shaft Power	1.89–3.03 W
Power Density	1.786 W/in³ More power-dense than 39% of 1759 Digital Standard servos
Torque Density	2.7708 oz-in/g Stronger than 38% of 1036 Digital Standard servos
Torque-to-Volume Ratio	78.32 oz-in/in³ Denser torque than 31% of 1042 Digital Standard servos
Speed-to-Weight	0.16026 (1/sec·g) Faster than 76% of 1033 Digital Standard servos
Speed-Torque Trade-off	17.29 Better balanced than 30% of 1031 Digital Standard servos
Torque Gain per Volt	16.65%/V More voltage-responsive (torque) than 58% of 850 Digital Standard servos
Speed Gain per Volt	21.44%/V More voltage-responsive (speed) than 85% of 871 Digital Standard servos
Voltage Range Width	1.4 V Wider voltage range than 35% of 1539 Digital Standard servos