Anyone tried 4 blade comprop

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I broke a prop and I am thinking about replacing it with one of these 4 blade composite props
http://www.overtons.com/modperl/pro...5_dia_x_15_pitch_M4545&aID=601O1&merchID=4006

I am replacing a 15 pitch (3 blade) on and 85 hp force. Let me know your results if you have tried one.

Thank you