E-flite EFLM1400

E-flite Park 450 Brushless Outrunner Motor Instruction Manual
Model: EFLM1400
Introduction
Thank you for purchasing the E-flite Park 450 Brushless Outrunner Motor 890Kv (EFLM1400). This motor is engineered to provide quiet, lightweight, and high-torque performance for various electric flight applications, particularly 3D park flyers and scale park flyers. This manual provides essential information for the safe and effective setup, operation, and maintenance of your motor. Please read this manual thoroughly before use to ensure optimal performance and longevity of your product.
Safety Precautions
Always observe the following safety guidelines to prevent injury or damage to the product and surrounding property.
- Read Instructions: Fully understand all instructions before operating the motor.
- Propeller Safety: Always remove the propeller before performing any maintenance or adjustments to prevent accidental startup. Keep hands, face, and loose clothing away from rotating propellers.
- Battery Handling: Use only recommended Li-Po batteries (2S–3S 1200–2100mAh). Handle Li-Po batteries with extreme care, following all manufacturer's instructions for charging, discharging, and storage.
- ESC Compatibility: Ensure your Electronic Speed Controller (ESC) is compatible with brushless motors and rated for at least 20A.
- Ventilation: Ensure adequate airflow around the motor and ESC during operation to prevent overheating.
- Secure Mounting: Always ensure the motor is securely mounted to the airframe using the provided hardware.
- Environmental Conditions: Do not operate the motor in wet conditions or near water.
- Adult Supervision: This product is not a toy. Adult supervision is recommended for users under 14 years of age.
Package Contents
Upon opening the package, verify that all components are present and undamaged.
- E-flite Park 450 Brushless Outrunner Motor (890Kv)
- Motor Mount
- Propeller Adapter
- Mounting Hardware

Figure 1: E-flite Park 450 Brushless Outrunner Motor with its included motor mount and propeller adapter.

Figure 2: Another perspective of the E-flite Park 450 motor, showing the shaft and connection wires.
Specifications
| Feature | Detail |
|---|---|
| Type | Brushless Outrunner Motor |
| Kv Rating | 890Kv |
| Weight | 72 grams (2.5 ounces) |
| Shaft Diameter | 4mm (reversible) |
| Poles | Slotted 12-pole |
| Recommended ESC | 20A Brushless ESC |
| Recommended Battery | 2S–3S 1200–2100mAh Li-Po |
| Recommended Propeller | 9x6 to 11x3.8 |
| Ideal Application (3D) | 15–25 oz park flyers |
| Ideal Application (Scale) | 20–30 oz park flyers |
| Dimensions | 3.7 x 2.1 x 2 inches |
Setup and Installation
Follow these steps to properly install your E-flite Park 450 Brushless Outrunner Motor into your aircraft.
- Mounting the Motor:
Attach the included motor mount to the firewall of your aircraft using appropriate screws. Ensure the mount is secure and aligned correctly. Then, attach the Park 450 motor to the motor mount using the provided mounting hardware. The external radial rotor design allows the 4mm shaft to be reversed for alternative motor installation configurations if needed.
- Connecting the ESC:
Connect the three motor wires to your 20A brushless ESC. The order of connection may affect the motor's rotation direction. If the motor spins in the wrong direction, simply swap any two of the three motor wires to reverse the rotation.
- Propeller Adapter Installation:
Install the propeller adapter onto the motor shaft. Ensure it is tightened securely. The propeller adapter is crucial for mounting your propeller.
- Propeller Selection and Installation:
Select a propeller within the recommended range (9x6 to 11x3.8) that is suitable for your aircraft and desired performance. Attach the propeller to the propeller adapter, ensuring it is balanced and securely fastened. Always ensure the propeller is removed when working on the motor or ESC.
- Battery Connection:
Connect your 2S–3S 1200–2100mAh Li-Po battery to the ESC. Ensure correct polarity. Refer to your ESC manual for specific battery connection and calibration procedures.

Figure 3: The E-flite Park 450 motor is designed for use in various RC aircraft, such as the one shown here.
Operation
Once installed and connected, the E-flite Park 450 motor operates in conjunction with your ESC and battery to provide propulsion for your RC aircraft.
- Pre-Flight Check: Before each flight, ensure all connections are secure, the propeller is tightly fastened, and the battery is fully charged.
- Throttle Control: Use your radio transmitter's throttle stick to control the motor speed. The ESC will translate your input into motor RPM.
- Flight Performance: The Park 450 is optimized for sport 3D performance in aircraft weighing 15–25 ounces and excellent performance in scale park flyers weighing 20–30 ounces.
- Monitoring: During operation, monitor motor and ESC temperatures. Excessive heat can indicate an issue with propeller sizing, battery choice, or airflow.

Figure 4: An RC aircraft in flight, powered by a motor like the E-flite Park 450.
Maintenance
Regular maintenance helps ensure the longevity and reliable performance of your motor.
- Cleaning: Keep the motor free from dirt, dust, and debris. Use a soft brush or compressed air to clean the motor's exterior.
- Inspections: Periodically inspect the motor for any signs of physical damage, loose wires, or worn bearings.
- Connections: Ensure all electrical connections (motor to ESC, ESC to battery) remain secure and free of corrosion.
- Propeller Balance: Regularly check your propeller for balance and damage. An unbalanced propeller can cause excessive vibration, leading to motor wear.
Troubleshooting
If you encounter issues with your E-flite Park 450 motor, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor not spinning | Loose connections, discharged battery, ESC not armed, damaged motor/ESC. | Check all wiring connections. Charge battery. Refer to ESC manual for arming procedure. Inspect motor and ESC for visible damage. |
| Motor spins in wrong direction | Incorrect motor wire connection to ESC. | Swap any two of the three motor wires connected to the ESC. |
| Motor lacks power or runs rough | Low battery voltage, incorrect propeller size, damaged motor/ESC, loose connections. | Ensure battery is fully charged and healthy. Verify propeller is within recommended range. Check all connections. |
| Motor or ESC overheating | Over-propped, insufficient airflow, damaged motor/ESC, battery too small. | Reduce propeller size. Ensure adequate cooling airflow. Check motor and ESC for damage. Use a battery with sufficient discharge rate. |
Warranty and Support
For warranty information or technical support regarding your E-flite Park 450 Brushless Outrunner Motor, please contact Horizon Hobby customer service. Keep your proof of purchase for any warranty claims.
Manufacturer: Horizon Hobby
Website: www.horizonhobby.com
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