Introduction
The YSIDO 36MM-S Alloy Heat Sink with High Speed Cooling Fan is designed to prevent overheating in 1/10 and 1/12 scale RC car motors. This unit combines a durable alloy heatsink with a high-speed cooling fan to efficiently dissipate heat, thereby extending the lifespan and improving the performance of your RC motor. It is compatible with 36mm diameter motors, including 540, F540, 550, 3650, 3660, and 3665 series brushed and brushless motors.

Image: The YSIDO 36MM-S Alloy Heat Sink with Cooling Fan, showing its compact design.
Setup and Installation
Package Contents:
- 1x 3010 High-Speed Cooling Fan
- 1x 36mm Alloy Heatsink
- 4x Mounting Screws
Installation Steps:
- Identify Compatible Motor: Ensure your RC motor has a 36mm diameter. This heatsink is designed for motors such as 540, F540, 550, 3650, 3660, and 3665 series.
- Attach Heatsink: Carefully clip the alloy heatsink onto your RC motor. The heatsink is designed to fit snugly around the 36mm motor casing.
- Mount Cooling Fan: Position the high-speed cooling fan on top of the heatsink. Align the fan's mounting holes with the screw holes on the heatsink.
- Secure Fan: Use the four provided screws to securely fasten the cooling fan to the heatsink. Do not overtighten.
- Connect Power: Plug the fan's power cable into a spare port on your RC receiver. The fan's plug is not polarity-sensitive, meaning it will function regardless of how it is connected to the positive and negative terminals. The fan operates within a voltage range of 5-8.4V.

Image: Illustration showing compatibility with 540, 550, 3650/3660/3665 motors.
Operating Instructions
Once installed and connected to a power source (5-8.4V from your receiver), the cooling fan will automatically begin to operate, drawing heat away from your motor. The fan can reach speeds of up to 26,000 RPM, providing effective heat dissipation. Continuous operation of the fan during vehicle use is recommended to maintain optimal motor temperatures and prevent thermal damage.
- Power Source: Connect to a 5-8.4V power supply, typically a spare port on your RC receiver.
- Automatic Cooling: The fan operates continuously when powered, providing active cooling.
- Temperature Management: Regularly monitor motor temperature, especially during extended or high-stress operation, to ensure effective cooling.
Maintenance
To ensure the longevity and optimal performance of your YSIDO heat sink and cooling fan, follow these simple maintenance guidelines:
- Regular Cleaning: Periodically inspect the fan blades and heatsink fins for dust, dirt, or debris accumulation. Use a soft brush or compressed air to gently clean these components. Ensure the fan is not powered during cleaning.
- Check Connections: Verify that the heatsink remains securely clipped to the motor and that the fan is firmly attached to the heatsink. Ensure the power cable connection to the receiver is secure and free from damage.
- Inspect for Damage: Regularly check the alloy heatsink and fan for any signs of physical damage, such as bent fins or cracked fan blades. Replace components if significant damage is observed.
Troubleshooting
Fan Not Spinning:
- Check Power Connection: Ensure the fan's power cable is correctly and securely plugged into a functional spare port on your RC receiver.
- Verify Power Supply: Confirm that the receiver port is supplying power within the 5-8.4V range.
- Clear Obstructions: Inspect the fan blades for any physical obstructions that might prevent them from spinning freely.
- Cable Integrity: Check the fan's power cable for any cuts, pinches, or damage.
Motor Still Overheating:
- Heatsink Contact: Ensure the heatsink is properly seated and making full, firm contact with the motor casing to maximize heat transfer.
- Fan Operation: Confirm the fan is spinning at its full speed and moving a sufficient amount of air.
- Environmental Factors: Consider if the operating environment is excessively hot or if the motor is under unusually heavy load, which might exceed the cooling capacity.
- Motor Condition: An aging or damaged motor may generate more heat than usual.
Specifications
| Brand | YSIDO |
| Model Number | R6108PRO |
| Compatibility | 36mm diameter RC motors (540, 550, F540, 3650, 3660, 3665) |
| Input Voltage | 5-8.4V |
| Fan Speed | Up to 26,000 RPM |
| Heatsink Material | Alloy |
| Product Dimensions (L x W x H) | 1.38" x 1.18" x 1.63" (35mm x 30mm x 41.4mm) |
| Item Weight | 1.17 Ounces (approx. 33g) |
| Cable Length | 20cm |

Image: Detailed dimensions of the YSIDO 36MM-S Heat Sink with Cooling Fan.
Warranty Information
No specific warranty information is provided in the product details. For details regarding warranty coverage, please refer to the product packaging or contact the seller directly.
Support
For technical assistance, troubleshooting, or inquiries regarding your YSIDO 36MM-S Alloy Heat Sink with High Speed Cooling Fan, please contact the manufacturer, YSIDO, or the retailer from whom the product was purchased. Please have your model number (R6108PRO) and purchase details available when seeking support.