Part comparison

Blue Bird BMS-35A vs Futaba S9177SV

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

14 shared specs4 scored

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No imageBlue BirdBlue Bird BMS-35ABMS-35A

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FutabaFutaba S9177SVS9177SV

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Directional spec summary

Counts across 4 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

14 specifications compared side by side.

Blue Bird BMS-35A / Futaba S9177SV
Compare bySpecification	ABlue BirdBlue Bird BMS-35A	BFutabaFutaba S9177SV
Physical1
Weight	74 g	74 g
Performance3
Stall torque	3.481 Nm	4.021 Nm0.54 Nm higher
Stall torque @ 7.4V	35.5 kg·cm	41 kg·cm5.5 kg·cm higher
Speed @ 7.4V	0.14 s/60°	0.11 s/60°0.03 s/60° lower
Electrical2
Minimum voltageUse-dependent	6 V	4.8 V
Maximum voltage	7.4 V	7.4 V
Mechanical & integration4
Motor kind	Rc servo	Rc servo
Drive principle	servo actuator	servo actuator
Architecture	Integrated servo module	Integrated servo module
Gear materialUse-dependent	titanium	metal
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-35A

BFutabaFutaba S9177SV

Physical1

Weight

Part A74 g

Part B74 g

Performance3

Stall torque

Part A3.481 Nm

Part B4.021 Nm0.54 Nm higher

Stall torque @ 7.4V

Part A35.5 kg·cm

Part B41 kg·cm5.5 kg·cm higher

Speed @ 7.4V

Part A0.14 s/60°

Part B0.11 s/60°0.03 s/60° lower

Electrical2

Minimum voltageUse-dependent

Part A6 V

Part B4.8 V

Maximum voltage

Part A7.4 V

Part B7.4 V

Mechanical & integration4

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

Gear materialUse-dependent

Part Atitanium

Part Bmetal

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-35AOpen source ↗

Futaba S9177SVOpen source ↗