RE: HERE INFOS ABOUT OS 75 AX
I thinking in same way apc 14x6 is the max prop
compare the propellers 13 inches of apc and the 14 inches, the shape is different,14'' thicker and has my more difficult to turn. I ordered several propellers for new tests bolly 13.5x5 zinger Wood 14x4 14x5 to reach more thrust and less speed