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Futaba BLS173SV
Mini Discontinued

Futaba BLS173SV

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-09-28
Identity
Brand Futaba
Product Number 01102172-1
Category Hobby
Discontinued Yes
Performance
Torque
7.4V 105.60 oz-in
6.6V 94.50 oz-in
6.0V 86.00 oz-in Above Average
Speed
7.4V 0.10 sec/60°
6.6V 0.11 sec/60°
6.0V 0.12 sec/60° Average
Physical
Weight 0.99 ozAverage
Dimensions L 1.299 in
W 0.591 in
H 1.067 in
Drivetrain
Motor Type Brushless
Gears Metal
Gear Spline/Teeth 25 T
Shaft Size 6.0 mm
Rotation Mode Positional
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Neutral Position 1520 µs
Control System SBUS2
Programmable Yes
Electrical & Environment
Operating Voltage 6–7.4 V
Power Source External
Regulator Type Direct
Water Rating None
Connectivity
Connector Futaba J
Wire Length 300 mm
Origin
Country of Origin Japan

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

TorqueAbove Average
Stronger than 73% of 262 Digital Mini servos at 6.0V
SpeedAverage
Faster than 52% of 263 Digital Mini servos at 6.0V
WeightAverage
Lighter than 38% of 466 Digital Mini servos

Performance Analysis

Shaft Power 1.33–1.95 W
Power Density2.384 W/in³
More power-dense than 67% of 440 Digital Mini servos
Torque Density3.0714 oz-in/g
Stronger than 74% of 258 Digital Mini servos
Torque-to-Volume Ratio104.99 oz-in/in³
Denser torque than 72% of 262 Digital Mini servos
Speed-to-Weight0.29762 (1/sec·g)
Faster than 43% of 259 Digital Mini servos
Speed-Torque Trade-off10.32
Better balanced than 68% of 261 Digital Mini servos
Torque Gain per Volt16.28%/V
More voltage-responsive (torque) than 52% of 232 Digital Mini servos
Speed Gain per Volt14.29%/V
More voltage-responsive (speed) than 37% of 235 Digital Mini servos
Voltage Range Width1.4 V
Wider voltage range than 45% of 351 Digital Mini servos

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Reviews (1)

  • Robin

    April 23, 2019

    Application(s): For moving cooling ducts fans on a 210cc Engine used at 1/4 strength

    Comments: 2 of Servo's Failed within 5 to 6 Hour of use. Pretty poor.

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