Stall torque
Part A3.628 Nm
Part B4.511 Nm0.883 Nm higher
Part comparison
Futaba BLS172SV vs KST X20-4208
A side-by-side comparison of source-backed specifications within the same subcategory.
8 shared specs1 scored
Directional spec summary
Counts across 1 numeric specifications with a clear higher-or-lower direction.
Part A leads
0
Tied
0
Part B leads
1
These are metric-by-metric differences, not an overall performance score. Check the values below.
Specifications
8 specifications compared side by side.
| Compare bySpecification | AFutabaFutaba BLS172SV | BKSTKST X20-4208 |
|---|---|---|
| Performance1 | ||
| Stall torque | 3.628 Nm | 4.511 Nm0.883 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;S.Bus2 | PWM |
| Control modesUse-dependent | PWM/S.Bus2 servo | PWM servo |
| Servo signal | PWM | PWM |
| Other specifications1 | ||
| PWM pulse center | 1500 µs | 1500 µs |
AFutabaFutaba BLS172SV
BKSTKST X20-4208
Performance1
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;S.Bus2
Part BPWM
Control modesUse-dependent
Part APWM/S.Bus2 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
Futaba BLS172SVOpen source ↗
KST X20-4208Open source ↗