1. Introduction
The Flash Hobby ARTHUR A2306.5 series brushless motors are high-performance components designed for 7-inch long-range FPV racing drones. This manual provides essential information for the proper installation, operation, and maintenance of your motor to ensure optimal performance and longevity.
2. Package Contents
- Flash Hobby ARTHUR A2306.5 Brushless Motor (quantity as purchased)
- Mounting Screws
- Propeller Nut
Figure 1: Flash Hobby Arthur A2306.5 Brushless Motor with included mounting hardware.
3. Setup and Installation
Proper installation is crucial for the performance and safety of your drone. Follow these steps carefully:
- Motor Mounting: Secure the motor to your drone's frame using the provided mounting screws. Ensure the screws are of appropriate length to avoid damaging the motor windings. The motor features a standard 4-M3 mounting pattern.
- Wiring: Connect the motor's three wires to your Electronic Speed Controller (ESC). The motor cable length is approximately 145mm (20#AWG). The order of connection determines the motor's rotation direction. If the motor spins in the wrong direction, swap any two of the three wires.
- Propeller Installation: Attach the propeller to the M5 shaft and secure it with the provided propeller nut. Ensure the propeller is balanced and installed in the correct orientation for thrust.
Figure 2: Motor outline diagram showing dimensions (diameter 28.8mm, height 17.5mm) and the 4-M3 mounting hole pattern.
4. Operating Instructions
The ARTHUR A2306.5 motors are designed for high-performance FPV applications. Observe the following guidelines for operation:
- Voltage Compatibility:
- 1400KV and 1900KV versions: Compatible with 3-6S LiPo batteries.
- 2300KV and 2550KV versions: Compatible with 2-4S LiPo batteries.
- Propeller Selection: Use propellers recommended for 7-inch long-range FPV drones. Refer to the specifications table for suggested propeller types for optimal performance with different KV ratings.
- ESC Configuration: Ensure your ESCs are properly calibrated and configured for brushless motors, including settings for timing and PWM frequency, according to your ESC manufacturer's recommendations.
- Pre-Flight Check: Always perform a pre-flight check to ensure all motor connections are secure, propellers are tight, and motors spin freely without obstruction.
5. Maintenance
Regular maintenance helps prolong the life and performance of your motors:
- Cleaning: Keep motors free from dirt, dust, and debris. Use compressed air or a soft brush to clean the motor bell and stator.
- Bearing Inspection: Periodically check the motor bearings for smooth operation. If you notice any grinding or excessive play, consider replacing the bearings. The motors utilize NMB bearings for durability.
- Wire Inspection: Check motor wires for any signs of fraying, cuts, or loose connections. Repair or replace damaged wires immediately.
- Screw Tightness: Ensure all mounting screws and propeller nuts remain tight before each flight.
Figure 3: Internal components of the A2306.5 motor, highlighting N50H Arc Magnets, NMB Bearing, and 0.2mm Silicon Steel Sheet.
6. Troubleshooting
If you encounter issues with your motor, consider the following common troubleshooting steps:
- Motor Not Spinning: Check all wiring connections between the motor and ESC. Ensure the ESC is receiving a signal from the flight controller and is powered correctly. Test with a different ESC or motor if possible to isolate the issue.
- Incorrect Rotation Direction: If the motor spins in the wrong direction, swap any two of the three motor wires connected to the ESC.
- Excessive Heat: Motors can get warm during operation, but excessive heat (above specified operating temperatures) may indicate an issue. Check for incorrect propeller size, over-propping, or a short circuit. Refer to the technical data for typical operating temperatures.
- Vibration/Noise: Inspect the motor for any physical damage, bent shafts, or loose components. Ensure propellers are balanced and securely attached. Check bearings for wear.
- Loss of Power: Verify battery voltage and health. Check for loose connections or damaged motor windings.
7. Specifications
The Flash Hobby ARTHUR A2306.5 series motors are available in several KV ratings. Key specifications are detailed below:
7.1. Basic Parameters
Figure 4: Basic parameters for Flash Hobby ARTHUR A2306.5 motors across different KV values.
7.2. Motor Technical Data
Figure 5: Motor Technical Data for Flash Hobby ARTHUR A2306.5 motors, including current, power, thrust, efficiency, and operating temperature under various conditions.
Figure 6: Continuation of Motor Technical Data table, providing additional performance metrics.
Note: The test condition for operating temperature is motor surface temperature at 100% throttle while the motor runs for 15 seconds in an environment temperature of 26°C.
8. User Tips
- Always use a propeller that matches the motor's KV rating and your drone's intended use (e.g., long-range vs. freestyle).
- Ensure your ESC firmware is up-to-date for optimal motor synchronization and efficiency.
- Consider using thread-locking compound on motor mounting screws to prevent them from loosening due to vibrations.
- Monitor motor temperatures, especially during initial flights or after changing propellers, to prevent overheating.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your original seller or the Flash Hobby manufacturer directly. Keep your proof of purchase for any warranty claims.
