Helicopter Servo Combo
The FrSky BLS54 Helicopter Servo Bundle provides a coordinated set of high-performance brushless servos designed for precision control in demanding RC helicopter applications. This bundle includes one BLS5401H tail servo and three BLS5402H cyclic servos, combining fast response, high torque performance, and compact form factors. Each servo features a CNC-machined aluminum protective case, durable metal gears, dual precision ball bearings, and Hall sensor technology for reliable operation. With support for FBUS (F.Port 2.0), SBUS, and PWM protocols, the BLS54 bundle offers flexible connectivity, telemetry feedback, and configuration options for compatible RC systems.
About the Servo Combo
Brushless Performance and Advanced Telemetry
The Xact brushless servos deliver faster speed and higher torque performance than comparable coreless servo designs while maintaining a compact form factor. Their robust aluminum housings and metal gears provide durability, while integrated Hall sensors and dual ball bearings support precise control. When connected through a compatible FBUS receiver or flight controller, the servos transmit real-time current, voltage, and temperature data to supported radio systems. Servo travel settings can also be adjusted through compatible ACCESS radios using ETHOS or LUA tools, and firmware updates help maintain performance.
Features:
- Complete Four-Servo Helicopter Bundle
- One BLS5401H Tail Servo
- Three BLS5402H Cyclic Servos
- Brushless Motor Technology
- CNC-Machined Aluminum Protective Cases
- Durable Metal Gear Construction
- High-Voltage Operation up to 8.4V
- Dual Precision Ball Bearings With Hall Sensors
- FBUS (F.Port 2.0), SBUS, and PWM Protocol Support
- FBUS Telemetry and Updatable Firmware
Includes:
- (1) FrSky BLS5401H Tail Servo
- (3) FrSky BLS5402H Cyclic Servos
- Hardware & Accessories
Specifications:
BLS5401H
| Application |
Heli Tail |
| Input Voltage |
6.0-8.4V |
| Operating Speed @ 6.0V |
0.05 sec/60° |
| Operating Speed @ 7.4V |
0.04 sec/60° |
| Operating Speed @ 8.4V |
0.03 sec/60° |
| Dynamic Torque @ 6.0V |
289.9 oz-in (17.2 kg-cm) |
| Dynamic Torque @ 7.4V |
277.8 oz-in (20 kg-cm) |
| Dynamic Torque @ 8.4V |
316.6 oz-in (22.8 kg-cm) |
| Gear Material |
Steel |
| Motor Type |
Brushless |
| Output Shaft Spline |
25T |
| Dimensions |
1.58x0.79x1.32in (40x20x33.5mm) |
| Weight |
2.74oz (77.5g) |
|
BLS5402H
| Application |
Heli |
| Input Voltage |
6.0-8.4V |
| Operating Speed @ 6.0V |
0.07 sec/60° |
| Operating Speed @ 7.4V |
0.06 sec/60° |
| Operating Speed @ 8.4V |
0.05 sec/60° |
| Dynamic Torque @ 6.0V |
388.9 oz-in (28 kg-cm) |
| Dynamic Torque @ 7.4V |
477.7 oz-in (34.4 kg-cm) |
| Dynamic Torque @ 8.4V |
531.9 oz-in (38.3 kg-cm) |
| Gear Material |
Steel |
| Motor Type |
Brushless |
| Output Shaft Spline |
25T |
| Dimensions |
1.58x0.79x1.32in (40x20x33.5mm) |
| Weight |
2.74oz (77.5g) |
|
