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Alternate air control lever not moving

Scheduled Pinned Locked Moved PA-28R Arrow III
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  • S Steku

    @anderson Was it working before SU5? What function you used to assign the alternate air (carb. heat) to the physical button?
    I hoped that 0.9.0 update will fix this - unfortunatelly - the issue is still present in 0.9.0.
    The:
    ANTI_ICE_SET (0,1)
    when assigned produces sounds of moving the Alternate Air lever, but the lever in the cockpit is not moving and I can't see any impact on engine RPM or mainfold pressure.
    Even operatin the lever by the mouse (the Alt. Air. lever moving then) has no effect on the engine. Should It be like that? I have no experience with constant speed prop., in simple plane with fixed prop the RPM drops when carb. heat is enabled.

    hangar_101H Offline
    hangar_101H Offline
    hangar_101
    wrote on last edited by
    #9

    @steku I have tried many different options but none of them have worked as expected though. I have opened a ticket.
    f1a22a93-5286-439c-8038-fedd6fc8a19c-image.png

    Hangar 101

    Z 1 Reply Last reply
    2
    • hangar_101H hangar_101

      @steku I have tried many different options but none of them have worked as expected though. I have opened a ticket.
      f1a22a93-5286-439c-8038-fedd6fc8a19c-image.png

      Z Offline
      Z Offline
      zeppos
      wrote on last edited by
      #10

      Having the exact same issue. This was most definitely working before SU5, as I had assigned buttons via SPAD.next to ANTI_ICE_SET_ENG1, alternating between 0 and 1. Now the exact same command does update relevant simvars in the background and even generating the button sounds, but the button animation itself no longer works. MSFS cockpit is set to legacy mode.

      Hoping that @anderson's ticket has a happy ending.

      DerekD 1 Reply Last reply
      1
      • Z zeppos

        Having the exact same issue. This was most definitely working before SU5, as I had assigned buttons via SPAD.next to ANTI_ICE_SET_ENG1, alternating between 0 and 1. Now the exact same command does update relevant simvars in the background and even generating the button sounds, but the button animation itself no longer works. MSFS cockpit is set to legacy mode.

        Hoping that @anderson's ticket has a happy ending.

        DerekD Offline
        DerekD Offline
        Derek
        JF Staff
        wrote on last edited by
        #11

        @zeppos

        If you contact Just Flight support they can look into the matter for you.

        Z 1 Reply Last reply
        1
        • S Steku

          @anderson Was it working before SU5? What function you used to assign the alternate air (carb. heat) to the physical button?
          I hoped that 0.9.0 update will fix this - unfortunatelly - the issue is still present in 0.9.0.
          The:
          ANTI_ICE_SET (0,1)
          when assigned produces sounds of moving the Alternate Air lever, but the lever in the cockpit is not moving and I can't see any impact on engine RPM or mainfold pressure.
          Even operatin the lever by the mouse (the Alt. Air. lever moving then) has no effect on the engine. Should It be like that? I have no experience with constant speed prop., in simple plane with fixed prop the RPM drops when carb. heat is enabled.

          RetiredMan93231R Offline
          RetiredMan93231R Offline
          RetiredMan93231
          wrote on last edited by
          #12

          @steku said in Alternate air control lever not moving:

          Should It be like that? I have no experience with constant speed prop., in simple plane with fixed prop the RPM drops when carb. heat is enabled.

          Turning alternate air ON does bypasses the air filter and provides heated air to the engine intake manifold, but because this engine is fuel injected, and has a constant speed prop, you won't see any change in RPM like you would with a simple carburated engine with a fixed pitch prop.

          corvus5624C 1 Reply Last reply
          0
          • RetiredMan93231R RetiredMan93231

            @steku said in Alternate air control lever not moving:

            Should It be like that? I have no experience with constant speed prop., in simple plane with fixed prop the RPM drops when carb. heat is enabled.

            Turning alternate air ON does bypasses the air filter and provides heated air to the engine intake manifold, but because this engine is fuel injected, and has a constant speed prop, you won't see any change in RPM like you would with a simple carburated engine with a fixed pitch prop.

            corvus5624C Offline
            corvus5624C Offline
            corvus5624
            wrote on last edited by
            #13

            @retiredman93231 Is there any (noticeable) effect on manifold pressure and/or EGT?

            RetiredMan93231R 1 Reply Last reply
            0
            • corvus5624C corvus5624

              @retiredman93231 Is there any (noticeable) effect on manifold pressure and/or EGT?

              RetiredMan93231R Offline
              RetiredMan93231R Offline
              RetiredMan93231
              wrote on last edited by RetiredMan93231
              #14

              @corvus5624 No, not that I am aware of. The unfiltered heated air is not really hot enough to affect the EGT. It might reduce the manifold pressure slightly, but not enough to really notice.

              corvus5624C 1 Reply Last reply
              0
              • RetiredMan93231R RetiredMan93231

                @corvus5624 No, not that I am aware of. The unfiltered heated air is not really hot enough to affect the EGT. It might reduce the manifold pressure slightly, but not enough to really notice.

                corvus5624C Offline
                corvus5624C Offline
                corvus5624
                wrote on last edited by
                #15

                @retiredman93231 Using hot (less dense) air should in principle reduce engine power, as there is less oxygen in the cylinder. I was wondering if this had any effect on the engine parameters. I think it should have, but perhaps it is simply not modeled?

                RetiredMan93231R 1 Reply Last reply
                0
                • corvus5624C corvus5624

                  @retiredman93231 Using hot (less dense) air should in principle reduce engine power, as there is less oxygen in the cylinder. I was wondering if this had any effect on the engine parameters. I think it should have, but perhaps it is simply not modeled?

                  RetiredMan93231R Offline
                  RetiredMan93231R Offline
                  RetiredMan93231
                  wrote on last edited by
                  #16

                  @corvus5624 You are correct, but the RPM won't change regardless, because it is being maintained by the constant speed prop.

                  1 Reply Last reply
                  0
                  • DerekD Derek

                    @zeppos

                    If you contact Just Flight support they can look into the matter for you.

                    Z Offline
                    Z Offline
                    zeppos
                    wrote on last edited by
                    #17

                    @derek Thanks a lot, ticket submitted. I'll post an update here to all if anything comes up.

                    hangar_101H 1 Reply Last reply
                    0
                    • Z zeppos

                      @derek Thanks a lot, ticket submitted. I'll post an update here to all if anything comes up.

                      hangar_101H Offline
                      hangar_101H Offline
                      hangar_101
                      wrote on last edited by
                      #18

                      @zeppos any update on that ticket?

                      @Derek, the last update was released back Aug 5th. It means the Arrow family is no longer a top priority for Just Flight?

                      Hangar 101

                      DerekD Z 2 Replies Last reply
                      0
                      • hangar_101H hangar_101

                        @zeppos any update on that ticket?

                        @Derek, the last update was released back Aug 5th. It means the Arrow family is no longer a top priority for Just Flight?

                        DerekD Offline
                        DerekD Offline
                        Derek
                        JF Staff
                        wrote on last edited by
                        #19

                        @anderson
                        We don't release upodates for our products to a timetable. If something is broken and can be fixed, or something can be enhanced or an update to the host game means a change is required, then we will release an update. The regularity of updates bears little relation to the priority of the product. Also, I guess it depends what you mean by priority. For some of our team, the priority is for stuff that we haven't released yet. Others are working on stuff we released some years ago.

                        1 Reply Last reply
                        0
                        • hangar_101H hangar_101

                          @zeppos any update on that ticket?

                          @Derek, the last update was released back Aug 5th. It means the Arrow family is no longer a top priority for Just Flight?

                          Z Offline
                          Z Offline
                          zeppos
                          wrote on last edited by
                          #20

                          @anderson The ticket was resolved with the understanding that the issue has been passed to the dev team to investigate and that "A fix will likely be included in the next update to the Arrow III (for MSFS)", without an ETA. That's good enough for me.

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