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  • whale tail

    what does the after market whale tails (i think thats what they are called) do to the boat? Mine came with one mounted on my boat. I have never tried to run with out it, as i figured it was put on for a reason.

  • #2
    Re: whale tail

    They are made to help the boat get on plane faster.The downside is it puts all that weight and stress on the aluminum anti-cavitation plate.
    Some boats they will cause handling problems at higher speeds.

    Take it off and test run without it.The boat may actually handle better.


    1981 ChrisCraft 210 Scorpion K,175 Johnson SeaHorse

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    • #3
      Re: whale tail

      Originally posted by Nashport_native View Post
      what does the after market whale tails (i think thats what they are called) do to the boat?

      Not a lot in my opinion. They are pretty good for the people that sell them though! They do add extra drag that will reduce top speed.

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      • #4
        Re: whale tail

        Originally posted by Nashport_native View Post
        i figured it was put on for a reason.
        Yep. Effective marketing.

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        • #5
          Re: whale tail

          Not much of a beliver here either !

          but how do you see it creating drag and hampering top end when its out of the water when on plane !


          fish
          http://picasaweb.google.com/lh/photo...eat=directlink



          Cant imagine why so many wont or dont add their geographic location to their profiles !

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          • #6
            Re: whale tail

            when i have it up on plane its still in the water, if not the people in the back of my boat get wet from the spray it makes

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            • #7
              Re: whale tail

              Yank it off and try it !

              they are an add_on gimmick of sorts ! lol



              fish
              http://picasaweb.google.com/lh/photo...eat=directlink



              Cant imagine why so many wont or dont add their geographic location to their profiles !

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              • #8
                Re: whale tail

                A whale tail is something family and friends have swore on for years. When I bought my boat that is one of the first things i got before hitting the water. Really a buzz kill that yall say they do nothing for handling or performance. Im going to have to take mine off now and see what difference it makes.. Good Thread. Learn something new everyday

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                • #9
                  Re: whale tail

                  Originally posted by fishinpa View Post
                  ...but how do you see it creating drag and hampering top end when its out of the water when on plane !
                  On most boats it is NOT out of the water once on plane. With OBs you can raise the engine height and get it out of the water, but the x-dimension on I/Os is not adjustable. Higher speed = more lift; too much lift along the centerline = instability

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                  • #10
                    Re: whale tail

                    They get boats on plane faster because they lift the stern of the boat up.

                    On any OB or IO, when you push the throttle foward, the engine pushes the transom both down and foward at the same time. Everyboat has pivot point so to speak, and then the stern goes down, the bow has to come up. That's part of the reason why boats get bow rise before on plane.

                    To help get rid of bow rise, you lift the stern instead. Those pigeon wings help in lifting the stern, and they typically work as advertised.
                    What they don't tell you is, the wing put stress not only on the antiventillation plate, but on the entire drive/gimbal/steering that is not normally there. They also lift from the center of the boat, which can make a boat tippy. And just like any other wing, depending on it's angle of attack (essentially your trim angle) If your trimmed out to far the wing will drag the back of the boat down towards, and possibly into, the water. You usually see it with hard cornering that the back of the boat takes a dip.
                    A much better solution is trim tabs. Smartabs is 1 product that isn't to much more expensive than a wing. And because they mount to the transom instead of the drive. Not only do they not put added stress on the drive. It lifts the boat from it's corners, instead of the center, and the boat actually becomes more stable than factory, not the other way around. And that's at any speed, any cornering angle, any trim angle. You don't have to worry about the trim angle as much, and there's no possibility of dragging the back of the boat down into the water.
                    just because you found it that way does not mean it is supposed to be that way.

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                    • #11
                      Re: whale tail

                      Good thread, and good explanation J.J. Thanks!

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                      • #12
                        Re: whale tail

                        Yes,I agree,great thread.I also have one of those whale tails on my boat,at least i think it do ?


                        The guy I bought the boat from said to NOT ever take it off,as it is a scary ride without it on there,but maybe this thing is whats giving me my pulling issue i have when i throttle the boat pretty hard at takeoff,it locks the steering,slow down,and it turns.I think I am going to take everyones advice,and take it off,and put some trim tabs on instead.
                        1996 Sea Ray 210 BR Select Signature
                        1977 190-T Del Ray 18ft With a 400 ci Chevy

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                        • #13
                          Re: whale tail

                          My boat handled squirely at low speeds and I wanted to cut down on porposing, plus to get up on plane faster when towing a skier. I put on a SE Sport hydrofoil and it did all three pretty well, I was pleased. I havent compared it to anything else, but it worked for me, except I used their new Sport Clip to mount it (doesnt require drilling in to the drive), but the darn thing popped of and now rests at the bottom of the lake somewhere.
                          PMs of any type will be promptly answered.

                          -----
                          2006 Tahoe Q4 Sport,
                          19.6', 4.3L V6 Mercrusier I/O, Red
                          No live wells, fish finders or rod holders.
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                          • #14
                            Re: whale tail

                            I am one that has had good results from hydrofoils. I have had stingray hydrofoils on 3 boats and have been very satisfied with the results. The main reason I always put one on was to get on plane faster which the hydrofoils absolutely help with. I may have taken a small hit on top speed but I didn't care. Handling was never a problem on the boats that I had the hydrofoils instlled on.

                            BTW I also never experienced having the motor fall off the back of the boat as many seem to suggest will happen. Never even had a single bend or crack in a anti-ventilation plate
                            1988 Sea Ray Seville 16 BRO w/1997 Mariner 115
                            My build thread
                            My upholstery thread

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                            • #15
                              Sign up today
                              Re: whale tail

                              Three kinds of whale tails
                              #1 varied accounts of success


                              #2 100% success


                              #3 success depends on what you like (sorry couldn't help it)
                              1987 1987 Lund S-16DLX

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