Firespitter propeller plane and helicopter parts v7.1 (May 5th) for KSP 1.0

i noticed on page 105 of this thread someone posted photos of a 6 bladed helicopter rotor?(sorry quoting isn't working for me for some reason, but i'm not on my normal computer so i'm not too worried about it ) was wondering exactly how to set that up as in game? i'm only finding 2 bladed rotors and from reading the post it seems like there was some configuration rinvolved?Firespitter propeller plane and helicopter parts v7.1 (May 5th) for KSP 1.0

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