Part comparison

Blue Bird BMS-35A vs Power HD LW-20MG

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

12 shared specs2 scored

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No imageBlue BirdBlue Bird BMS-35ABMS-35A

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Power HDPower HD LW-20MGLW-20MG

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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

12 specifications compared side by side.

Blue Bird BMS-35A / Power HD LW-20MG
Compare bySpecification	ABlue BirdBlue Bird BMS-35A	BPower HDPower HD LW-20MG
Physical1
Weight	74 g	60 g14 g lower
Performance1
Stall torque	3.481 Nm1.52 Nm higher	1.961 Nm
Electrical2
Minimum voltageUse-dependent	6 V	4.8 V
Maximum voltageUse-dependent	7.4 V	6.6 V
Mechanical & integration4
Motor kind	Rc servo	Rc servo
Drive principle	servo actuator	servo actuator
ArchitectureUse-dependent	Integrated servo module	Servo module
Gear materialUse-dependent	titanium	metal
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-35A

BPower HDPower HD LW-20MG

Physical1

Weight

Part A74 g

Part B60 g14 g lower

Performance1

Stall torque

Part A3.481 Nm1.52 Nm higher

Part B1.961 Nm

Electrical2

Minimum voltageUse-dependent

Part A6 V

Part B4.8 V

Maximum voltageUse-dependent

Part A7.4 V

Part B6.6 V

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 BServo module

Gear materialUse-dependent

Part Atitanium

Part Bmetal

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-35AOpen source ↗

Power HD LW-20MGOpen source ↗