Part comparison

Blue Bird BMS-A923 vs Futaba BLS172SV

A side-by-side comparison of source-backed specifications within the same subcategory.

9 shared specs2 scored

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No imageBlue BirdBlue Bird BMS-A923BMS-A923

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FutabaFutaba BLS172SVBLS172SV

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Directional spec summary

Counts across 2 numeric specifications with a clear higher-or-lower direction.

Part A leads

Tied

Part B leads

These are metric-by-metric differences, not an overall performance score. Check the values below.

Specifications

9 specifications compared side by side.

Blue Bird BMS-A923 / Futaba BLS172SV
Compare bySpecification	ABlue BirdBlue Bird BMS-A923	BFutabaFutaba BLS172SV
Physical1
Weight	34 g40 g lower	74 g
Performance1
Stall torque	1.138 Nm	3.628 Nm2.49 Nm higher
Mechanical & integration3
Motor kind	Rc servo	Rc servo
Drive principle	servo actuator	servo actuator
Architecture	Integrated servo module	Integrated servo module
Control & communication3
Communication interfacesUse-dependent	PWM	PWM;S.Bus2
Control modesUse-dependent	PWM servo	PWM/S.Bus2 servo
Servo signal	PWM	PWM
Other specifications1
PWM pulse center	1500 µs	1500 µs

ABlue BirdBlue Bird BMS-A923

BFutabaFutaba BLS172SV

Physical1

Weight

Part A34 g40 g lower

Part B74 g

Performance1

Stall torque

Part A1.138 Nm

Part B3.628 Nm2.49 Nm higher

Mechanical & integration3

Motor kind

Part ARc servo

Part BRc servo

Drive principle

Part Aservo actuator

Part Bservo actuator

Architecture

Part AIntegrated servo module

Part BIntegrated servo module

Control & communication3

Communication interfacesUse-dependent

Part APWM

Part BPWM;S.Bus2

Control modesUse-dependent

Part APWM servo

Part BPWM/S.Bus2 servo

Servo signal

Part APWM

Part BPWM

Other specifications1

PWM pulse center

Part A1500 µs

Part B1500 µs

Product sources

Product sources used by this comparison

Blue Bird BMS-A923Open source ↗

Futaba BLS172SVOpen source ↗