3Racing 3RAC-MHS005/RE Race-Oriented 540 Cooling Assembly  [3RAC-MHS005/RE]

3RACING Motor Heat Sink W/ Fan For 540 Motor (Fan-Shaped) - Red - 3RAC-MHS005/RE
Price:
USD$5.70
Brand:
3Racing
Model:
3RAC-MHS005/RE
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Race-focused cooling for 540 motors

The 3Racing 540 Motor Cooling Fan and Heat Sink (3RAC-MHS005/RE) is engineered for competitive hobbyists who need reliable thermal control in 540 motor applications. The aluminium sink provides a broad surface for heat conduction while the integrated fan enforces airflow across the motor can, reducing thermal drift during repeated runs. Its compact, low-mass design is suited to tuned setups where weight and consistent temperature behaviour matter.

Technical highlights

  • Compatibility: Sized to fit standard 540 motor cans used in racing classes
  • Material: Precision aluminium for efficient heat transfer and durability
  • Design: Integrated fan profile to maintain airflow at race pace
  • Color: Red finish for part identification in pit setups

What mounting tolerances should I check?

Verify concentric fit on the motor can and axial clearance to the chassis; slight misalignment can reduce cooling effectiveness and induce vibration at high rpm.

How does this affect motor thermal resistance?

The aluminium sink lowers junction-to-ambient thermal resistance by increasing surface area and coupling it to forced convection, which helps stabilise temperature under repeated race runs.

Recommended wiring and voltage for the fan?

Use a regulated low-voltage feed within the fan rating and avoid powering from a high-current source without regulation. For competition use, route fan power via a dedicated BEC or controlled aux output to prevent interference with primary systems.