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  6. Water rudder on the Amphibian very ineffective

Water rudder on the Amphibian very ineffective

Scheduled Pinned Locked Moved Caravan Professional
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  • S Offline
    S Offline
    slipperfruit
    wrote last edited by
    #4

    Water rudder works very well for me

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    • F Offline
      F Offline
      Fabbi
      wrote last edited by
      #5

      Yes for me also, no problem with the rudder.

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      • JibletJ Offline
        JibletJ Offline
        Jiblet
        wrote last edited by Jiblet
        #6

        The water rudder does nothing.
        Gear down on (deep) water and it'll lift the rudders out of the water somehow.

        I confess I've not ever flown an amphib or float IRL so buggered if I know.

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        • J Offline
          J Offline
          JakeBunny
          wrote last edited by
          #7

          The water rudders dont do anything. The actual aircraft rudder has more authority. In all weight regimes.
          Ive flown Caravans for 20+ years but admit I only right seated the Canoed birds in FL. But this isnt modeled well.

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          • J Offline
            J Offline
            JakeBunny
            wrote last edited by
            #8

            Also, Nose gear tiller binding operates even with the rudder ruds up. So it just doesn't appear to have ANY simulation here.

            Black SquareB 1 Reply Last reply
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            • J JakeBunny

              Also, Nose gear tiller binding operates even with the rudder ruds up. So it just doesn't appear to have ANY simulation here.

              Black SquareB Online
              Black SquareB Online
              Black Square
              Black Square Developer
              wrote last edited by
              #9

              @JakeBunny The water rudders have a huge and noticeable effect for me, as others have stated elsewhere, probably too much, actually. What is the steering tiller? Is this any different from the rudder input on the variants with conventional gear? How is the steering "operating" when the aircraft is in the water? Just looking for clarifications.

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              • R Online
                R Online
                RPGamerous
                wrote last edited by
                #10

                I finally flew the amphibian variant yesterday, and deploying the water rudders made a clear difference in steering for me. @Jiblet I think gears down/lift out of water effect is a sim bug (at least it used to be). At any rate, with gear retracted I have no issues on the water.

                For those still having problems, maybe try a reinstall of the plane if you haven't already?

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                • Black SquareB Online
                  Black SquareB Online
                  Black Square
                  Black Square Developer
                  wrote last edited by Black Square
                  #11

                  I may have found the problem here.

                  There was an undocumented change in MSFS 2024, which prevents the water rudders from extended or retracting when the extension time was set to 0. Of course, I did this because MSFS 2024 interprets any water rudder movement as requiring the hydraulic gear pump, causing the gear pump light on the instrument panel to flash. It seems that a time of 1/100th of a second is short enough that the light doesn't illuminate. If this was the cause of the confusion here, then I think you will be much happier with the water handling now!

                  J 1 Reply Last reply
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                  • Black SquareB Black Square

                    I may have found the problem here.

                    There was an undocumented change in MSFS 2024, which prevents the water rudders from extended or retracting when the extension time was set to 0. Of course, I did this because MSFS 2024 interprets any water rudder movement as requiring the hydraulic gear pump, causing the gear pump light on the instrument panel to flash. It seems that a time of 1/100th of a second is short enough that the light doesn't illuminate. If this was the cause of the confusion here, then I think you will be much happier with the water handling now!

                    J Offline
                    J Offline
                    JakeBunny
                    wrote last edited by
                    #12

                    @Black-Square So with the WRs up, and extremely low throttle. The full rudder deflection gives a massive rate of turn. There isn't enough flow over the rudder to allow the aircraft to have such authority. I brought up the tiller function as another point that if I use my tiller the aircraft turns with ease. This shouldn't even work. (could be nose gear code?) But there is NO difference in turning rate with the WRs up OR down. Its extremely sensitive it with the rudder input and nearly zero airflow over the aircraft vertic
                    al rudder.

                    Black SquareB 1 Reply Last reply
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                    • J JakeBunny

                      @Black-Square So with the WRs up, and extremely low throttle. The full rudder deflection gives a massive rate of turn. There isn't enough flow over the rudder to allow the aircraft to have such authority. I brought up the tiller function as another point that if I use my tiller the aircraft turns with ease. This shouldn't even work. (could be nose gear code?) But there is NO difference in turning rate with the WRs up OR down. Its extremely sensitive it with the rudder input and nearly zero airflow over the aircraft vertic
                      al rudder.

                      Black SquareB Online
                      Black SquareB Online
                      Black Square
                      Black Square Developer
                      wrote last edited by
                      #13

                      @JakeBunny This is exactly what I tried to explain that you might be experiencing above. The issue is that the water rudders may appear to be up, and the handling in the cockpit is in the correct position, but the invisible water rudders in the physics simulation are still down. I'm still not sure what steering tiller input you're using (perhaps I'm just unfamiliar with this hardware input), but it's likely that it's turning the invisible water rudders.

                      Here is how I worded it in the changelog, just for different phrasing:

                      The water rudder may have invisibly failed to extend or retract in MSFS 2024 due to an undocumented change. Previously, users may have experienced a perceived lack of water rudder authority, or perceived abundance of aerodynamic rudder authority, depending on how the aircraft was loaded.

                      If you wanted to test this to confirm my suspicion, you could copy these two lines of code, replacing the corresponding "point.15", and "point.19" entries in the amphibian's flight_model.cfg:

                      point.15 =  5, -33.20, -5.33, -4.00, 2500, 0, 0.75, 40, 0.30, 2.5, 0.85, 0.01, 0.01, 8, 200, 200, 1
                      point.19 =  5, -33.20,  5.33, -4.00, 2500, 0, 0.75, 40, 0.30, 2.5, 0.85, 0.01, 0.01, 8, 200, 200, 1
                      
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