BLS905X Brushless Tail Servo 8Kgf.cm 0.035sec/60° for 550-700 Helicopters
BLS905X Brushless Tail Servo 8Kgf.cm 0.035sec/60° for 550-700 Helicopters
KST BLS905X HV Brushless Tail Servo
The KST BLS905X is a high-performance HV brushless tail servo designed for demanding helicopter applications and 3D aerobatics. Its robust aluminum housing, full-metal geartrain, and precision ball bearings provide the durability and accuracy needed for fast and aggressive maneuvers.
Powered by a high-performance brushless motor and upgraded electronics, the BLS905X delivers fast response, precise positioning, and consistent tail control. The rigid metal construction also helps maintain reliable performance under high loads.
The BLS905X is an excellent choice for 550–700 class helicopters, especially for pilots who demand fast tail response, precise control, and dependable performance during advanced 3D flying.
choice for advanced 3D helicopter pilots and 550–700 class helicopter applications.
Features
- Hardened Steel Gears
- Extreme torque and Excellent speed
- CNC aluminium case
- Brushless DC Motor
- Two Ball Bearings
Specification
| Parameter | Value |
| Item | BLS905X Brushless Tail Servo |
| Operating Voltage | DC6.0V-8.4V |
| Size | 40.50 × 20 × 37mm |
| Torque | 6Kgf.cm@6.0V / 7Kgf.cm@7.4V / 8Kgf.cm@8.4V |
| Speed | 0.045sec/60°@6.0V / 0.040sec/60°@7.4V / 0.035sec/60°@8.4V |
| Working Frequency | 760μs/560Hz |
| Temperature Range | -10℃ ~ +65℃ |
| Case Material | Aluminum Alloy |
| Motor Type | Brushless DC Motor |
| Gear Set Material | Hardened Steel |
| Position Sensor | Potentiometer |
| Ball Bearing | 2BB |
| Case Dimensions | 40.5mm × 20mm × 38mm ±0.2mm |
| Weight | 70g ±10% |
