This 30x10mm fan is a compact cooling accessory created for ARRMA Mini Kraton 3S vehicles to keep motor temperatures in check during repeated runs. The internal rotor is 6061-T6 aluminum and the external cover is formed from 7075-T6 alloy, delivering a robust yet lightweight metal assembly suitable for bashing and sprint runs.
Key electrical notes from the maker include a nominal 20000 rpm with a ±20% tolerance, dual ball bearings for extended life, and operation across 5V–9V with a common current draw of about 0.6A. The fan accepts a direct receiver connection but should not be driven above 9V to prevent motor failure.
Fitting is simple for those used to small hardware: the fan ships pre-assembled and secures with the supplied Grade 12.9 black flat head screws. Using thread-lock on metal-to-metal threads is recommended to minimise loosening from vibration. Power can be sourced from the receiver or a regulated switched BEC while respecting the voltage cap.
In tuning terms this fan reduces peak motor temperatures on short, intense runs which helps maintain consistent ESC and motor behaviour without altering gearing or timing. Ensure the heatsink airflow path is clear and avoid contact between the rotor and wiring or suspension parts.
A compact, metal-bodied cooling solution for Mini Kraton 3S motor heatsinks; install with supplied hardware and keep voltage within safe limits for reliable service.
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