Part comparison

Blue Bird BMS-28A vs Hitec HSB-9380TH

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

11 shared specs3 scored

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No imageBlue BirdBlue Bird BMS-28ABMS-28A

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HitecHitec HSB-9380THHSB-9380TH

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Directional spec summary

Counts across 3 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

11 specifications compared side by side.

Blue Bird BMS-28A / Hitec HSB-9380TH
Compare bySpecification	ABlue BirdBlue Bird BMS-28A	BHitecHitec HSB-9380TH
Performance3
Stall torque	2.746 Nm	3.334 Nm0.588 Nm higher
Stall torque @ 7.4V	28 kg·cm	34 kg·cm6 kg·cm higher
Speed @ 7.4V	0.1 s/60°0.04 s/60° lower	0.14 s/60°
Mechanical & integration4
Motor kind	Rc servo	Rc servo
Drive principle	servo actuator	servo actuator
ArchitectureUse-dependent	Integrated servo module	Rc servo module
Gear materialUse-dependent	metal	Titanium
Control & communication3
Communication interfaces	PWM	PWM
Control modes	PWM servo	PWM servo
Servo signal	PWM	PWM
Other specifications1
PWM pulse center	1500 µs	1500 µs

ABlue BirdBlue Bird BMS-28A

BHitecHitec HSB-9380TH

Performance3

Stall torque

Part A2.746 Nm

Part B3.334 Nm0.588 Nm higher

Stall torque @ 7.4V

Part A28 kg·cm

Part B34 kg·cm6 kg·cm higher

Speed @ 7.4V

Part A0.1 s/60°0.04 s/60° lower

Part B0.14 s/60°

Mechanical & integration4

Motor kind

Part ARc servo

Part BRc servo

Drive principle

Part Aservo actuator

Part Bservo actuator

ArchitectureUse-dependent

Part AIntegrated servo module

Part BRc servo module

Gear materialUse-dependent

Part Ametal

Part BTitanium

Control & communication3

Communication interfaces

Part APWM

Part BPWM

Control modes

Part APWM servo

Part BPWM 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-28AOpen source ↗

Hitec HSB-9380THNo public source