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Whale tail stabilizer slowing me down

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  • Whale tail stabilizer slowing me down

    I removed my whale tail type plastic stabilzer that's been on my mercruiser since the last owner to check out how she'd run without.

    To my suprise I picked up a whopping 10 mph on the top!

    Could this device really help my mileage that much getting onto a plain when it drags me down this much at the top end?

    If they're so good why don't the major motor manufactures have the motors molded into this shape?

  • #2
    Re: Whale tail stabilizer slowing me down

    If it slowed you down that much it was drinking more fuel too.
    Think of the stress that is not on the drive now..good thing.
    The foils work for some boats but not all...


    1981 ChrisCraft 210 Scorpion K,175 Johnson SeaHorse

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    • #3
      Re: Whale tail stabilizer slowing me down

      No offense but your preaching to thw choir here. The general consensus is they are bad for performance as well as cause undue stress on the leg of the motor. Also they can make handeling down right dangeroue when taking on waves parallel.

      They do have their place, but in general people on these forums recommend smart tabs or adjustable tabs to help improve lower planing speeds, porposing, and bow rise.

      As much as I hate fins, 10 mph sounds like an aweful lot of top end to loose. Are you sure you are trimmed correctly?

      Bill

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      • #4
        Re: Whale tail stabilizer slowing me down

        If the motor is tucked in rather straight down or in the begining stages of trimming up, it can cause tremendous drag.

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        • #5
          Re: Whale tail stabilizer slowing me down

          I guess in some boats they have their place but in mine at WOT it was like draging a big shovel blade behind the boat. I once had a small aluminum boat in which the big tail worked wonders when I was solo. It kept the bow down and made it possible to ride fast. Normally that would be impossible in the lightweight tiller steer.

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          • #6
            Re: Whale tail stabilizer slowing me down

            My previous boat had one. I took it off and gained a consistant 4mph. Turning improved dramatically and no longer felt dangerous.
            Some of the guys here are running them on smaller boats with outboard motors and like them. My boat was i/o and it was much happier with the fin off. I cant say they dont have their place but I find it difficult to imagine a $20 piece of plastic being that good.

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            • #7
              Re: Whale tail stabilizer slowing me down

              now put a set of Nauticus Smart Tabs on it for $100. you will really be surprized.
              http://www.iboats.com/Nauticus_SX_Sm...2485--dz.54646
              FLORIDA GATORS
              TEBOW Country



              Please, NO PM's (Private Messages) regarding boat/engine problems. they will not be answered.
              That is what these forums are for. Post your questions, in the appropriate Forum.

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              • #8
                Re: Whale tail stabilizer slowing me down

                Originally posted by IVAZ View Post
                My previous boat had one. I took it off and gained a consistant 4mph. Turning improved dramatically and no longer felt dangerous.
                Some of the guys here are running them on smaller boats with outboard motors and like them. My boat was i/o and it was much happier with the fin off. I cant say they dont have their place but I find it difficult to imagine a $20 piece of plastic being that good.
                I have one on my 18' Celebrity I/O with a 4.3L V-6. It really was a big help with my boat but I did lose 3 or 4 mph on top end.

                The best improvements were in stability in "rocking" waves and the biggest was in the holeshot pulling up a waterskier. Cut the "up" time easily in half.

                YMMV

                Jeff

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                • #9
                  Re: Whale tail stabilizer slowing me down

                  The Nauticus Smart Tabs will help get/keep your back end out of the water and give you more speed, stability, faster plane, handling, etc. Best $100 I spent on my boat.

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                  • #10
                    Re: Whale tail stabilizer slowing me down

                    Think of the vertical loads its putting on the pivot/steer assembly that was not designed for it. Excess/premature wear? Seems like attending "outboard trimming 101 class" would be a better payoff.

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                    • #11
                      I have one on now, about the take it off! I losing 10mph WOT too. I will test it this weekend and see if it will pick up 10mph without it.

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                      • #12
                        Sign up today
                        Meanwhile in 2019 ...

                        tobqluu, please take a few minutes to read our FORUM RULES regardin' posting in old topics.

                        Closing this one up.

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