Part comparison

Blue Bird BMS-28A vs Hitec D980TW

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

14 shared specs4 scored

Start over

No imageBlue BirdBlue Bird BMS-28ABMS-28A

View details

HitecHitec D980TWD980TW

View details

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-28A / Hitec D980TW
Compare bySpecification	ABlue BirdBlue Bird BMS-28A	BHitecHitec D980TW
Physical1
Weight	74 g5 g lower	79 g
Performance3
Stall torque	2.746 Nm	4.315 Nm1.569 Nm higher
Stall torque @ 7.4V	28 kg·cm	44 kg·cm16 kg·cm higher
Speed @ 7.4V	0.1 s/60°0.07 s/60° lower	0.17 s/60°
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	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 D980TW

Physical1

Weight

Part A74 g5 g lower

Part B79 g

Performance3

Stall torque

Part A2.746 Nm

Part B4.315 Nm1.569 Nm higher

Stall torque @ 7.4V

Part A28 kg·cm

Part B44 kg·cm16 kg·cm higher

Speed @ 7.4V

Part A0.1 s/60°0.07 s/60° lower

Part B0.17 s/60°

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 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 D980TWOpen source ↗