
KST BLS915 V8.0 – High-Performance Cyclic Servo
The KST BLS915 V8.0 is a high-performance cyclic servo engineered for serious 3D aerobatics, making it an ideal upgrade for competitive flyers. Packed with enhancements over the BLS815 V2, it delivers exceptional performance and reliability.
- Hardened steel gearbox in a robust aluminum housing with cooling fins — extends durability and ensures long-term precision.
- Class-leading torque and speed: Up to 25 kg·cm at 8.4 V and lightning-fast 0.07 s/60°, perfect for tight 3D maneuvers.
- High-voltage operation (6.0–8.4 V), with integrated brushless electronics and support for programmable fine-tuning.
- Optimized for 550–700 size helicopters, making it a direct fit for advanced and performance-oriented builds.
Key Specifications:
| Spec | Value |
|---|---|
| Voltage | 6.0–8.4 V |
| Dimensions | 40.5 × 20 × 38 mm |
| Torque | 18 kg·cm @ 6 V · 22 kg·cm @ 7.4 V · 25 kg·cm @ 8.4 V |
| Speed | 0.09 s/60° @ 6 V · 0.08 s/60° @ 7.4 V · 0.07 s/60° @ 8.4 V |
| Weight | ~70–78 g |
| Frequency | 1520 µs / 333 Hz (default); 760 µs / 560 Hz via programming |
| Bearings | Dual ball bearings (2BB) |
| Temperature Range | –10 °C to +65 °C |
| Motor | Brushless DC |
| Housing | CNC Aluminum |