1. Introduction
Thank you for choosing the HOBBYWING QuicRun Fusion 8IGHT 2-IN-1 Brushless Motor and ESC. This integrated powertrain is designed for 1/8th scale RC crawler and light-load climbing models, offering a compact design, intelligent torque output, and real-time drag brake adjustment. This manual provides essential information for the proper installation, operation, and maintenance of your unit.
2. Safety Precautions
Always observe the following safety guidelines to prevent personal injury or damage to the product and your RC model:
- Read the entire manual before use to become familiar with the product features.
- Ensure all wiring connections are correct and secure before powering on the unit.
- Avoid operating the motor/ESC in wet conditions unless specifically designed for it.
- Keep hands, hair, and loose clothing away from rotating parts.
- Always disconnect the battery from the ESC when not in use.
- Use appropriate battery types and voltages as specified in the product specifications.
- Store the unit in a dry, cool place away from direct sunlight and extreme temperatures.
- This product is recommended for users aged 14 years and older.
3. Product Overview
The HOBBYWING QuicRun Fusion 8IGHT is an innovative 2-in-1 integrated brushless motor and electronic speed controller (ESC) unit. Its compact design simplifies wiring and installation in RC crawler chassis, especially those with limited space.



4. Specifications
| Feature | Detail |
|---|---|
| Model | QuicRun Fusion 8IGHT 2-IN-1 |
| Type | Brushless Sensored Motor & ESC (2-in-1) |
| KV Rating | 2300KV |
| Continuous Current | 80A |
| LiPo Support | Up to 4S LiPo |
| Built-in BEC | 13A Max Output, Switchable 6V/7.4V/8.4V |
| Dimensions (Motor) | Overall size: 42mm (diameter) x 69mm (length) |
| Shaft Diameter | 5mm |
| Material | Metal |
| Recommended Age | 14+ years |
| Application | 1/8th RC Crawler & 1/7th Light-Load Climbing Models |


5. Setup and Installation
Follow these steps for proper installation of the Fusion 8IGHT unit into your RC model:
- Mounting the Unit: The compact 42x69mm design allows for convenient placement within the chassis. Securely mount the motor/ESC unit using appropriate screws and mounting points on your RC model. Ensure adequate airflow around the unit for cooling.
- Connecting to Receiver: Connect the signal cable from the ESC to the throttle channel (usually Channel 2) on your RC receiver.
- Drag Brake Adjustment: For real-time drag brake adjustment, connect the yellow signal line from the ESC to an idle channel on your receiver. This allows you to fine-tune the drag brake force using your remote control, adapting to various application environments.
- Battery Connection: Connect your 4S LiPo battery to the ESC's power input. Ensure correct polarity.
- BEC Voltage Selection: The powerful built-in BEC offers switchable output voltages (6V/7.4V/8.4V). Select the appropriate voltage for your servos and other peripheral equipment (e.g., lamp groups, winches). Refer to the specifications of your connected devices to avoid damage.



6. Operating Instructions
The Fusion 8IGHT features intelligent torque output for enhanced control:
- Uphill Performance: When climbing uphill, the electric control automatically increases the output torque to overcome resistance, allowing the vehicle to ascend smoothly.
- Downhill Control: When descending downhill, the electric speed control automatically reduces the output torque and stabilizes the vehicle speed, providing effective control and free handling.

6.1 Programming the ESC
The ESC supports both LED and LCD programming boxes for parameter adjustment:
- LED Program Box: Provides basic programming options.
- LCD Program Box Pro: Offers more professional programming capabilities with a comprehensive display for detailed adjustments.
Refer to the specific programming box manual for detailed instructions on parameter settings.

7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your HOBBYWING Fusion 8IGHT unit:
- Cleaning: After each use, especially in dusty or dirty conditions, gently clean the motor and ESC with a soft brush or compressed air to remove debris.
- Inspection: Periodically inspect all wires and connectors for signs of wear, fraying, or damage. Ensure all connections are secure.
- Motor Bearings: Check motor bearings for smooth operation. If they feel rough or noisy, they may need lubrication or replacement.
- Storage: When not in use, store the unit in a clean, dry environment. Disconnect the battery.
8. Troubleshooting
This section addresses common issues you might encounter:
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor not responding | Loose battery connection, incorrect receiver connection, ESC not calibrated. | Check battery and receiver connections. Recalibrate ESC with your radio system. |
| Motor stutters or runs rough | Sensor wire issue, motor damage, incorrect ESC settings. | Inspect sensor wire. Check motor for physical damage. Verify ESC settings with a program box. |
| Overheating | Improper gearing, excessive load, insufficient airflow. | Adjust gearing. Reduce load. Ensure proper ventilation around the unit. |
| Drag brake not working as expected | Yellow signal line not connected, incorrect receiver channel, ESC setting. | Ensure yellow signal line is connected to an idle receiver channel. Check ESC drag brake settings. |
9. User Tips
- For optimal performance in crawling, experiment with different drag brake settings using the real-time adjustment feature to match terrain and driving style.
- Take advantage of the intelligent torque output by driving smoothly; the ESC will manage power delivery for consistent climbing and controlled descents.
- Always ensure your battery is fully charged and in good condition before operating your RC model to prevent unexpected power loss.
10. Warranty and Support
For warranty claims or technical support, please contact your retailer or the official HOBBYWING service center. Keep your proof of purchase for warranty validation. Detailed warranty terms and conditions may vary by region and are typically available on the manufacturer's official website.





