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  • Servo Overview:

    The KST BLS805X Aluminum Brushless Metal Gear High Voltage Tail Servo is a high-performance servo designed for 550 to 700-class helicopters. It features an aluminum housing and solid metal gears, ensuring durability and reliability during intense flight maneuvers. This servo is perfectly suited for 3D helicopter aerobatics, offering precise and rapid positioning for optimal control. Its compatibility with high voltage (HV) systems makes it an excellent choice for advanced helicopter pilots seeking both power and speed.

    About the Metal Gear HV Servo

    Performance & Durability

    The KST BLS805X is equipped with a brushless DC motor that provides extreme torque and excellent speed, making it one of the fastest servos available for its class. The CNC aluminum case adds robust protection, while the dual ball bearings enhance smooth operation and longevity under heavy loads. With a neutral impulse of 760 microseconds and a possible frequency of 560Hz, this servo ensures quick, accurate response times and reliable returns to the initial position, ideal for demanding 3D aerobatic flying.

    Features:

    • Extreme torque and excellent speed
    • CNC aluminum case for durability
    • Brushless DC motor for high efficiency
    • Dual ball bearings for smooth operation
    • Compatible with 550 to 700-class helicopters

    Includes:

    • (1) BLS805X Aluminum Brushless Metal Gear High Voltage Tail Servo
    • Servo Accessories
    • Mounting Hardware

    Specifications:

    Application

    550-700 Helicopters
    Input Voltage

    6.0-8.4V
    Operating Speed @ 6.0V

    0.048sec/60°
    Operating Speed @ 7.4V

    0.042sec/60°
    Operating Speed @ 8.4V

    0.039sec/60°
    Dynamic Torque @ 6.0V

    76.39oz-in (5.5kg-cm)
    Dynamic Torque @ 7.4V

    90.28oz-in (6.5kg-cm)
    Dynamic Torque @ 8.4V

    104.17oz-in (7.5kg-cm)
    Pulse/Frequency

    560Hz
    Motor Type

    Brushless
    Output Shaft Spline

    25T
    Gear Material

    Hardened Steel
    Dimensions

    1.59×0.79×1.5in (40.5x20x38mm)
    Weight

    2.47oz (70g)

    This product was added to our catalog on August 11, 2025

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