ARRMA MINI KRATON 3S 30x10mm Cooling Fan by GPM MAKM018FAN  [MAKM018FAN]

High-speed 30x10mm cooling fan for Mini Kraton

This 30x10mm cooling fan is an RC-scale accessory designed for ARRMA Mini Kraton 3S platforms, built to manage motor temperature and support consistent brushless performance. The fan rotor is machined from 6061-T6 aluminum while the outer cover uses 7075-T6 alloy, offering a balance of light weight and structural durability appropriate for on-track and bashing use.

Electrical and mechanical details from the manufacturer specify a nominal speed of 20000 rpm ±20%, dual ball bearings, rated for 5V–9V operation with a typical current draw around 0.6A, and a direct connection option to the receiver power bus. Exceeding 9V risks burning the motor and must be avoided. The unit is suited to pair with the original GROM Motor Heatsink Type D 28mm diameter motors (ARA-2662).

Installation is straightforward for hobbyists familiar with small-scale hardware: the kit arrives pre-assembled, and final mounting uses supplied Grade 12.9 black flat head screws. Use a thread-locking compound on metal-to-metal fasteners to reduce the chance of loosening under vibration. Power can be sourced from an accessible receiver or a regulated switched BEC, observing the voltage limit noted above.

The fan's role in tuning is practical and direct: it helps stabilise motor temps during repeated short runs or hard acceleration, which can maintain consistent ESC and motor behaviour without altering core gearing or motor timing settings. Monitor airflow clearance around the heatsink and avoid contact with wires or suspension components.

This cooling fan is a compact, metal-bodied option for ARRMA Mini Kraton 3S setups that need reliable airflow over the motor heatsink, install with the supplied hardware and observe the 9V voltage limit for safe operation.