Weight
Part A34 g40 g lower
Part B74 g
Part comparison
Blue Bird BMS-A923 vs Futaba S9177SV
A side-by-side comparison of source-backed specifications within the same subcategory.
9 shared specs2 scored
Directional spec summary
Counts across 2 numeric specifications with a clear higher-or-lower direction.
Part A leads
1
Tied
0
Part B leads
1
These are metric-by-metric differences, not an overall performance score. Check the values below.
Specifications
9 specifications compared side by side.
| Compare bySpecification | ABlue BirdBlue Bird BMS-A923 | BFutabaFutaba S9177SV |
|---|---|---|
| Physical1 | ||
| Weight | 34 g40 g lower | 74 g |
| Performance1 | ||
| Stall torque | 1.138 Nm | 4.021 Nm2.883 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 S9177SV
Physical1
Performance1
Stall torque
Part A1.138 Nm
Part B4.021 Nm2.883 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 S9177SVOpen source ↗