1. Introduction
The ZTW Beatles Air Navigation Series Electronic Speed Controller (ESC) is an entry-level device specifically designed for fixed-wing aircraft. This series balances performance and cost-effectiveness, making it a popular choice among model enthusiasts. These ESCs are known for their simple and practical configuration, smooth motor startup, and comprehensive protection features against improper operation. They offer a reliable and high-performance solution for various brushless motor applications.
2. Specifications
The ZTW Beatles Brushless ESCs are available in various current ratings. Below are the detailed specifications for each model:

| Type | PN#/Model | Cont.\Burst Current(A) | NiXX\Lipo Battery cell | Weight (g) | BEC Output | Size (mm) W*L*H | User Program |
|---|---|---|---|---|---|---|---|
| Beatles 20A BEC | 3020101 | 20A\30A | 5-12NC\2-4Lipo | 26 | 5V/2A | 25*43*8 | Yes |
| Beatles 30A BEC | 3030101 | 30A\40A | 5-12NC\2-4Lipo | 26 | 5V/2A | 25*43*8 | Yes |
| Beatles 40A BEC | 3040101 | 40A\50A | 5-12NC\2-4Lipo | 27 | 5V/3A | 27*52*11 | Yes |
| Beatles 50A SBEC | 3050101 | 50A\60A | 5-18NC\2-6Lipo | 39 | 5.5V/5A | 30*56*14 | Yes |
| Beatles 60A SBEC | 3060201 | 60A\70A | 5-18NC\2-6Lipo | 45 | 5.5V/5A | 30*56*14 | Yes |
| Beatles 70A SBEC | 3070101 | 70A\80A | 5-18NC\2-6Lipo | 60 | 5.5V/5A | 37*68*14 | Yes |
| Beatles 80A SBEC | 3080101 | 80A\90A | 5-18NC\2-6Lipo | 65 | 5.5V/5A | 37*68*17 | Yes |
3. Key Features
- Unlimited Speed Support: Compatible with the maximum speed of all industrial production brushless motors currently available.
- User-Friendly Setup: Features a looping menu setup for easy configuration.
- Precise Throttle Linearity: Offers ultra-smooth and precise throttle response.
- Safe Start Function: Prevents immediate motor startup when power is applied and the remote control throttle lever is not at zero, enhancing safety.
- Signal Loss Protection: Designed to handle remote control signal loss scenarios.
- Overheat Protection: Automatically reduces output power by half at 110°C and restores full power when the temperature drops below 110°C.
- Broad Motor Compatibility: Suitable for various types of brushless motors.
- Programmable Functions: Supports scheduling functions, allowing for customized settings via a programming card.
4. Setup Instructions
Proper setup is crucial for the safe and efficient operation of your ZTW Beatles ESC. Please follow these steps carefully:

4.1. Connecting Your Anti-Spark Circuit (Recommended for high voltage batteries)
- Solder an extra wire to the positive (red) wire of your battery. This wire is for ease of testing the ESC.
- Connect the anti-spark wire from the ESC before plugging the main positive (red) battery wire into the ESC. This procedure helps prevent a spark when connecting high-voltage batteries.
4.2. Connecting the ESC
- Always use connectors of the proper size for your application.
- Ensure the battery is connected to the ESC correctly (positive to positive, negative to negative).
- Ensure the motor is connected to the ESC correctly (three phase wires).
- Ensure the receiver is connected to the ESC correctly (servo cable).
4.3. Throttle Calibration
Throttle calibration ensures your ESC responds accurately to your remote control's throttle stick movements.
- Turn on your radio transmitter and push the throttle stick to its maximum position (100%).
- Connect the battery to the ESC.
- Wait for approximately 2 seconds. You will hear two quick 'beep' sounds.
- Pull the throttle stick to its lowest position (zero).
- Wait for approximately 2 seconds. You will hear one 'beep' sound.
- Calibration is now complete. Your ESC is ready for use.
5. Operation
Once the ESC is properly set up and calibrated, it is ready for operation. The ZTW Beatles ESC provides smooth and precise throttle control for your brushless motor. The factory settings are optimized for general use, but you can customize parameters using a programming card (sold separately) if advanced adjustments are desired.
Always ensure your battery is adequately charged and securely connected before operating your model. Monitor the ESC and motor temperatures during initial flights to ensure optimal performance and prevent overheating.
6. Maintenance
To ensure the longevity and reliable performance of your ZTW Beatles ESC, follow these maintenance guidelines:
- Keep Clean: Regularly inspect the ESC for dirt, dust, or debris. Clean gently with a soft brush or compressed air. Avoid using liquids directly on the ESC.
- Inspect Connections: Periodically check all wiring and connectors for signs of wear, corrosion, or loose connections. Ensure all solder joints are secure.
- Storage: Store the ESC in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid Physical Damage: Protect the ESC from impacts and vibrations that could damage internal components.
7. Troubleshooting
If you encounter issues with your ZTW Beatles ESC, consider the following general troubleshooting steps:
- No Motor Response: Check all connections (battery, motor, receiver). Ensure the battery is charged. Re-perform throttle calibration. Verify the motor is not seized.
- Erratic Motor Behavior: Check for loose wiring or poor solder joints. Ensure the motor phase wires are connected correctly. Re-calibrate the throttle.
- Overheating: Ensure adequate airflow around the ESC. Check if the motor is drawing excessive current (e.g., due to an oversized propeller or binding). Reduce load if necessary.
- ESC Beeps Continuously: Refer to the ESC's specific beep codes (if available in a separate programming manual) to diagnose the issue, often indicating low voltage or signal loss.
For more advanced issues, consult the ZTW website or contact their customer support.
8. User Tips
- For optimal performance, ensure precise throttle control for smooth operation of your RC vehicle.
- The ESC provides speed control for brushless motors in RC vehicles and toys, offering a versatile solution for various applications.
9. Warranty and Support
For specific warranty information and technical support, please refer to the official ZTW website or contact your retailer. Keep your proof of purchase for any warranty claims.