FrSky ACT S5414H Servo  High/Wide Voltage Super Torque Digital Metal Gear Servo

ARRIVING JUNE 5, 2026! Order Now!

FrSky ACT 5400 Series Coreless HV Servos – High-Speed Performance for Giant Scale RC Aircraft

FrSky S5414H Coreless HV Digital Servo | High-Torque Servo for 50cc–100cc Giant Scale RC Airplanes

SKU 03050662

The FrSky S5414H Coreless HV Digital Servo is a premium high-performance servo engineered for giant-scale RC airplanes, IMAC competition aircraft, precision aerobatic models, warbirds, and large sport aircraft. Combining high torque, fast response, precise centering, and durable all-metal construction, the S5414H is an ideal choice for demanding flight applications where reliability and control precision are critical.

Designed around advanced coreless motor technology, the FrSky S5414H delivers smooth operation, excellent holding power, and accurate control response for large control surfaces on 50cc–100cc class aircraft.

Recommended Applications

• 50cc–100cc Giant Scale RC Airplanes
• IMAC Competition Aircraft
• Precision Aerobatic Models
• Scale Aircraft
• RC Warbirds
• Large Sport Aircraft
• Rudder Servo Applications
• Elevator Servo Installations
• High-Load Control Surfaces

Key Features

Coreless Motor Technology

The FrSky S5414H utilizes a high-performance coreless motor that offers faster acceleration and smoother operation compared to conventional brushed servo motors.

Benefits Include:

• Fast and responsive control inputs
• Smooth servo movement
• Excellent centering accuracy
• Reduced rotational inertia
• Consistent performance under load

Precision Feedback System

A precision potentiometer feedback system provides accurate position tracking and repeatable control response, helping pilots maintain precise aircraft control throughout the flight envelope.

Integrated Soft Start Technology

The S5414H features built-in Soft Start technology, which gradually initializes servo movement during power-up rather than instantly driving to position.

Soft Start Benefits:

• Reduces startup shock loads
• Helps protect servo gears
• Reduces stress on pushrods and linkages
• Minimizes wear on control horns and hinges
• Improves overall system longevity

Heavy-Duty Metal Gear Train

A durable metal gear train is designed to withstand the sustained loads commonly encountered in giant-scale aerobatic, sport, and scale aircraft.

CNC-Machined Aluminum Case

The fully CNC-machined aluminum case provides exceptional rigidity and improved heat dissipation while helping protect internal components during demanding flight operations.

Dual Ball Bearing Support

Dual precision ball bearings support the output shaft for smooth operation, reduced friction, and improved long-term durability.

High-Voltage Compatible

The FrSky S5414H is designed for modern high-voltage radio systems and operates from 4.8V to 8.4V, making it suitable for a wide range of giant-scale aircraft power systems.

High-Speed Signal Processing

With a 333Hz refresh rate, the S5414H delivers fast, responsive servo performance for precision flying applications.

Standard 25T Output Spline

Features a 25T output spline compatible with many aftermarket aluminum servo arms and heavy-duty giant-scale hardware.

Performance Specifications by Model

Choosing the Right FrSky ACT 5400 Series Servo

S5412H – Optimized for Speed

If rapid servo response is your top priority, the S5412H is the ideal choice. Its ultra-fast transit speed of 0.05 sec/60° at 8.4V makes it particularly well suited for ailerons and other lighter-duty control surfaces on 30cc–50cc aerobatic and sport aircraft where quick, precise control inputs are critical.

S5414H – The Best All-Around Performer

The S5414H offers an excellent combination of torque, speed, and precision, making it a versatile option for a wide range of giant-scale aircraft. It performs exceptionally well on rudder and elevator installations in 50cc–100cc models, providing the strength needed for larger control surfaces without sacrificing responsiveness.

S5415H – Built for Maximum Control Authority

Designed for the most demanding applications, the S5415H delivers up to 986 oz-in of torque at 8.4V. This powerhouse servo is ideal for oversized rudders, elevators, and other heavily loaded control surfaces found on 100cc–120cc aircraft, turbine jets, and large-scale warbirds where maximum holding power is essential.

Why Choose the FrSky S5414H?

The FrSky S5414H Coreless HV Servo offers an outstanding balance of torque, speed, durability, and precision, making it one of the best choices for pilots flying 50cc–100cc giant-scale RC aircraft. Whether installed on rudders, elevators, or other high-load control surfaces, the S5414H delivers the confidence, accuracy, and reliability serious RC pilots demand.

General Specifications – All Models