Inq
Elite member
I wrecked my Mini F-22 and want to make another. I'll look into doing the larger version. Anyway, the wing slot for the propeller is pretty large - ~6.75" x ~1.5". I was wondering if anyone had tried trimming the slot to just slightly larger than the propeller??? Say 1/10" around it. Something like this image shows... instead of cutting the full rectangle, only cut around the blade... keeping the yellow portion in foamboard also. Would it reduce the thrust or increase the thrust? My logic doesn't help me - (1) being close interferes and hurts thrust OR (2) being close straitens out the flow sooner and increases thrust. Any thoughts?