Before knowing how to improve it is important to note that a propeller is no more than a set of rotating wings. In this blog, we will discuss how to improve the efficiency of Michigan propellers. The first and foremost thing that comes into play is that boats that benefit from lowering trim tabs considerably at cruise rpm might see big gains from foil propellers. It is because the downward angle of propeller shafts on most inboard-powered planning powerboats helps propellers lift the stern without the added drag of lowered tabs. It is also important that propeller blades raked increase stern lift by shifting the center of effort of that lift in relation to the fore-and-aft center of buoyancy of the boat. Noise, Vibration, and Cavitation Noise and Vibration of propeller come from Cavitation. To eliminate noise and vibration, simply adding the blades will do the work. Cavitation typically occurs as each propeller blade passes through the wake of the running gear and ...
