The Max-Prop Whisper is available from 18" to 44" diameters and are for 1-1/4" to 3-1/2" diameter shafts.
The size of sailboats has been increasing steadily over the past few years. With the larger size comes the demand for bigger engines and higher speed under power, while keeping noise and vibration down to a minimum.
To that affect, Max-Prop has designed a 5 blade propeller, combining all the necessary attributes. To address the horse power gains, Max-Prop has added one more blade. This allows the transfer of power in the water in a more efficient way than the only other alternative-a larger diameter-while keeping noise to a minimum. In addition to the increased power, the extra blade provides a smoother run than a 4 blade propeller.
A 5 blade Max-Prop Whisper on a high angle shaft will have substantially less drag than a fixed 2 blade propeller and provides more power while motoring.
If your engine achieves either too much or to little RPM at max throttle, adjust the pitch to a higher or lower setting to attain the correct RPM. Pitch adjustment can be done in the water as the propeller does not need to be disassembled to change the pitch.
A five blade propeller will offer the smoothest possible run under power, quieting down your drivetrain.
The Max-Prop Whisper provides 80% more power in reverse than a comparable fixed blade propeller. The Whisper utilizes the same leading edge in forward as it does in reverse giving the propeller the same efficiency in both directions dramatically improving control and power in reverse.