Max-Prop Whisper

99518

$ 6,600.00 USD

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Note: Please indicate your exact shaft diameter in the "Note To PYI Inc." text field during checkout.

  • Description

    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.

  • Features
    • Very efficient power
    • Outstanding reverse and stopping power
    • Ultra smooth operation
    • Very low drag
    • Simple "bolt on" installation
    • Externally adjustable pitch
    • Best suited for heavy displacement cruisers over 50 feet
    • Ideal for large Yachts 70 to 150 feet
    • Available from 18" to 48" diameter
    • For shafts 1-1/4" to 3-1/2"
  • Fits Shafts

    5 Blade Whisper

    Available for shafts 1-1/4" to 3-1/2" or metric equivalent.

  • Shipping

    Please allow 3-5 days of handling before we can ship your Max-Prop propeller. This is to allow any time for boring and assembly.

Easy Pitch Adjustment


Outstanding Power

Max-Prop Easy 4 blade has very low drag

Low Drag

Just like other Max-Prop propellers, the Easy feathers to a low drag position while sailing. Under sail the Max-Prop will increase sailing speed by about 15%, the largest difference being noticed when sailing in light air. When sailing with a fixed propeller the vessel has to overcome the fixed blade drag, installing a Max-Prop maximizes sailing performance.

Unmatched Reverse


C
Customer David C470 "Four Seventy"

we Have a Catalina 470 2001 model sailing yacht hull #54 , existing prop is a Brunton's auto prop RH 24 ap3310 , it is getting a bit warn out , and we were looking at replacing the Brunton's with a maxi prop which model Maxi prop would you recommend? and would we need 3 , 4, or 5 blades , , our spec details are as follows engine Yanmar 4JH3-TE 75 bhp , RPM 3800 , gear box KM4A ratio 3.30. 1. boat length is 48.00 feet , water line length is 42 feet displacement 27000 lbs we have recently replaced/ renewed the stainless steel 1.1/2 inch diameter like for like , and fitted a new cutlass bearing we also have a spur rope cutter on the shaft , please advise best possible propeller,. kind regards David email david@dbrre.com.au

PYI Inc.

Hello David,For this Catalina 470, we recommend the 4-Blade Max-Prop Easy 110mm hub. The 4-blade is only $250.00 more ($5,050.00) than the 3-blade ($4,800.00). The 4-blade will be a more powerful and smoother propeller. Also, we could set the propeller up at a lighter pitch on the 4-blade (21" or 16 degree) versus the 3-blade (21" or 17 degree). The Max-Prop Easy would come all pre-assembled. Both the pitch and rotation (Yanmar will have RH rotation) will be set at PYI.