Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
NEXUS-X Control System is an RC product from RadioMaster. This page focuses on what an end customer needs: fit, use cases, specifications and imagery, without prices or outbound supplier detours.
NEXUS-X Control System fits customers looking for RadioMaster items in RadioMaster Control Systems, with RC-MODEL support for choosing the right configuration.
NEXUS-X Control System is a RadioMaster product intended for RadioMaster RC systems, accessories and workshop use. This page presents the practical buying information in one place: compatibility, SKU, variants, radio protocol, use case and technical details.
The content is written for customer decision-making through RC-MODEL, without supplier prices or outbound purchase routes.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
A buying table for matching servo size, torque, speed, gear type and voltage to trainers, gliders, 3D aircraft, EDF jets and Giant Scale models.
Mechanical setup guide for servo arms, linkage angles, throw, control horns, neutral position and radio setup after geometry is correct.
Make an aircraft calmer for beginners by setting low rates, high rates and expo without hiding mechanical setup problems.
Failsafe setup for electric and fuel aircraft: throttle behavior, receiver signal loss, switch positions and safe verification before flight.
| Technical Specifications | |
| Manufacturer | RadioMaster |
| Brand | RadioMaster |
| Product Code | HP0157.0113-GRY |
| All Variant SKUs | HP0157.0113-GRY, HP0157.0113-BLU, HP0157.0113-RED, HP0157.0113-GLD, HP0157.0113-PUR |
| Available Variants | Grey; Blue; Red; Gold; Purple |
| Product Type | Control System |
| RadioMaster Collections | Control Systems |
| Product Family | RadioMaster radio-control electronics |
| Application | RadioMaster RC systems, accessories and workshop use |
| Item | Nexus-X Control System |
| Weight | 20.6g |
| Protocol / RF | ExpressLRS / ELRS, EdgeTX |
| Firmware | RF 2.2 |
| Optimized for RF 2.2 | Engineered for peak performance and compatibility. |
| Precision Control | STM32F722 MCU and ICM42688P 6-axis motion sensor/accelerometer for superior dynamics. |
| Data Logging | 256MB onboard flash memory for detailed logging and tuning. |
| Versatile Connectivity | Multiple UART ports support CRSF, ELRS, S.BUS, and more. |
| More PWM Pins | Additional pins for expanded control in complex setups. |
| CNC-Machined Aluminum Case | Sleek, rugged design doubles as a heat sink to keep the system cool. |
| Wide Voltage Range | Supports 3.6V-70V external power input for flexible setups. |
| Improved BEC | Stable, reliable power delivery to electronics for enhanced performance. |
| USB-C Accessibility | Lightweight, flexible USB-C extender cable for easy access in tight builds. |
| Compact and Lightweight | Ideal for any build. |
| RF Rescue | Standard feature for enhanced safety in emergencies. |
| Optional Case Color | Grey / Gold / Red / Blue / Purple. |
| MCU | STM32F722RET6 |
| Flash Memory (Black Box. IC) | 256MB (W25N02KVZEIR) |
| Barometer | SPL06-001 |
| Uart | 5 - S.BUS[UART1], TELEM[UART2],PORT-A[UART4], PORT-B[UART6], PORT-C[UART3] |
| Servo | S1, S2, S3, TAIL Servos (Up to 12V ) |
| Rpm Sensor | 1 - FROM ESC FREQUENCY SENSOR |
| AUX | 1 |
| Ext voltage input (tele) | 3.6-70v |
| Receiver Support | CRSF, ELRS, GHOST, S.BUS, SUMD, IBUS, XBUS, EXBUS, PPM, MSP |
| Voltage Supply(DC) | 5 - 16V |
| A-B-C Serial Port Power Output | 5V - 1.5A |
| Telemetry | S.BUS, HoTT, S.Port, MSP, EDGETX, ELRS |
| Demensions | 44.70 x 26.50 x 12.30mm |
| Plug'n'Play ExpressLRS | Solder-free locking connector for RP3-H ExpressLRS receivers (sold separately). |
Tags: RadioMaster, HP0157.0113-GRY, RadioMaster Control Systems, RC radio
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