4 Blade prop recommendations....

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  • 4 Blade prop recommendations....

    I have a 1993 Sea Ray 290 Sundancer 7.4.... I wanting to go to a 4 blade prop, my current prop is a 18.5 with 17 pitch.I would like to get a little stern lift.

  • #2
    Powertech has some good 4 blades. I normally like the BRS4 which is 17 1/4 diameter, but a good all around blade.
    They have the BRA4 which is 18.5 diameter and has a lot of cup, but I think you would like the BRS better.

    That one cost $709 with a cushion lok hub. and its $70 plus shipping if we need to swap to a different pitch or style.

    Do you know the gear ratio of your Bravo 2 drive by chance?
    What RPM and GPS speed are you getting with that 17 pitch 3 blade? at wide open





    Ken Reeves
    KR@Propgods.com
    941-735-5808

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    • #3
      I just bought the boat a month ago, the few times I've been out I haven't checked the speed and rpm. It has a 2.00:1 gear ratio, as soon as the weather breaks a little here in Ga I'll get the rpm and speed for you........Thanks

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      • #4
        Looking back at a couple emails, and this boat review, I'd expect mid to high 20's for top speed, depending on how your loaded.
        In the boat review, they claimed 27-30 MPH. http://www.boatus.com/boatreviews/power/SeaRay290.asp
        The lowest pitch they make in that 4 blade is 16, and thats what I'd go with.
        The BRS4 16 pitch.

        Ken Reeves
        KR@Propgods.com
        941-735-5808

        Comment


        • #5
          Didn't use GPS for speed....4500 RPM around 32 MPH speedometer

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          • #6
            I'd trust the magazine article more then that speedometer. but if you go check with GPS or even a cell phone speedometer app, it would be more accurate.

            It doesn't seem like much of a difference, but 3 MPH on your boat is roughly 10%, which is a big move for target RPM.

            I'd still lean toward a 16 pitch


            Ken Reeves
            KR@Propgods.com
            941-735-5808

            Comment

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