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Old 04-19-2014, 08:32 AM   #4
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Just make a relatively thin foam nacelle.. a little thicker than a styro coffee cup is enough. You want the better intake ring and the cone at the back to squeeze the efflux.

I flew one of the same "bobcat" clones with a bare fan... it was much slower. Just putting a wild guess nacelle around it is a HUGE difference.
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