The Hirobo HI0304074 cooling fan is an RC accessory built to fit Lepton Lex helicopter parts and to deliver directed airflow to electric systems. It is designed to act as an auxiliary cooling device to assist with temperature control on motors and adjacent electronics during flight and while testing on the bench.
Intended compatibility is with Lepton Lex assemblies, so verify mounting points and clearance on your specific airframe before fitting. This component supplements existing cooling and is not a drivetrain replacement.
Fitting guidance: secure the fan using the designated bracket or mounting points, route the fan lead to an appropriate power source, and ensure correct polarity when connecting. Keep wires clear of moving components for safe operation.
Thermal impact: installing this fan can reduce temperature rise during extended hover and high-load sessions, helping sustain consistent motor and electronics performance and reducing the chance of thermal-induced power cutbacks. Use it alongside ESC and motor tuning for best results.
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