I use both 2-blade and 3-blade props on my airboats, whichever works the best. Know that the 3 blades give more thrust for the same diameter, and draw more amps. Your setup should draw around 15 amps per motor with a total of 55 ounces of thrust and a pitch speed of 55 mph. You could go up to 4S for a big performance increase, but shorter run time.

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