
Freewing F9F cheater cover replacement
thingiverse
This ~7mm opening ram air scoop replaces the sewer grate cheater hole cover on the stock Freewing F9F cougar. In flight testing (telemetry airspeed and current) the new scoop showed a remarkable reduction in current in the power system at cruise speeds with only a slight loss in top speed of the model. The new scoop may also reduce the chance of FOD (foreign object damage) when flying of less than perfect flying fields.
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