Freewing 90mm 9-Blade Ducted Fan Unit
90mm 9 Blade Ducted Fan from Freewing - P0905
For the Freewing F-4 Phantom II and F/A-18C Hornet 6S 9 blade version.
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Retro fitting for flight time
Changing from 12 blades to 9 blades reduced maximum current draw changed from 98amps to 72amps measured. Minimum change in 12 blade sound with increasing total flight time. Recommend retro fitting all 90 mm fans.