Announcement

Collapse
No announcement yet.

Manfred Jahn DC-3 v3.14

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Manfred Jahn DC-3 v3.14

    In my opinion, this bird is an absolute must have.

    I'm going to discuss the Manfred Jahn DC-3 v3.14 for a moment, I'd appreciated any feedback related to improving what I happen to experience. The aircraft is impressive, the MJ in our downloads area is 3.12 (I believe), so 3.14 was downloaded from Sim Out House.

    3.14 is the latest. You can download it from SOH directly. (Membership required.)

    What I encounter on every flight is when setting the barometric pressure, the altimeter reading is incorrect. For a work around, using the displayed altitude in Little Nav Map, I then adjust the altimeter to read what is shown in LNM. The disappointment is, I can never trust the pressure reading from ATC or even Active Sky to be correct. This leads me to believe it’s an issue with the MJ DC-3.

    For example, the current barometric pressure setting on the altimeter is 30.74, AS16 is listing 29.54. If I enter 29.54, the altimeter will then read a higher altitude (about 300’ higher). This is realllllly bad if you try to fly an approach down to minimums…

    The other issue I have now experienced (or possibly an exceptional feature, albeit a scary one), the loss of manifold pressure (MP). I believe this has happened only when I’ve used carburetor heat (CH) while in clear air. It was explained to me during flight training, the use of carb heat should only be during landing OR when carb icing is actually being experienced. I had been explained to me, it was possible to ice up the carburetor heat intake... then it was "flight over". Similar to using 2 wheel drive in a 4x4 until you actually need 4 wheel drive to get “unstuck”.

    So, what I saw today was, while at low RPMs (1850, the checklist lists 1800-2350 for cruise), using CH, MP continued to decrease, this was as a cruising altitude of 2500’. The reduction started slowly, but progressively increased (throttle power setting was about 63%, starting at ~31”, and decreasing to ~25” before I took action). Eventually with 100% throttle, the engines were only making 30” MP and falling, this was with auto lean, then auto rich, then full and with fuel pumps on. I also tried de-icing the props and wings, and increased the RPMs to 2250. I was about to cut CH, mind you, had previously flown into and out of a fog bank (this is why CH was on). I was certain to lose an engine as a previous scenario had gone the same way. Just as I was about to try it anyway and MP was now less than 25”, I hit a wall of precipitation, instantly both engines went to nearly 43” of MP. All I can assume is either increasing the RPMs or something in the coding with the precip hitting the airframe brought the engines back to life. I’d like to believe MJ and his team developed a way to induce icing into the carburetor heat intake, and this was not just a fluke.
    Operations Manager

  • #2
    The Manfred Jahn DC-3 version in our download section is v4.5
    Canadian Private Pilot XDP253477... retired Flight Service Specialist

    Comment


    • #3
      Is that the only version offered? I'm fairly certain it is not.
      Operations Manager

      Comment


      • #4
        There are several versions of the C47/ DC3 in the downloads section but I think that there is only one version of the Manfred Jahn DC-3 v4.5 is the only Manfred Jan offered. I am trying to say that v4.5 is better than v3.14 in my opinion.
        Canadian Private Pilot XDP253477... retired Flight Service Specialist

        Comment


        • #5
          I believe Buffalo DC3 V3 Vintage.zip is in fact v3.12, (The Dakotas V3 FSX & P3D). I've been wrong before, and it will happen again. For me, I really like the old flight deck vs. that of v4.5, which is not listed as for use with FSX, although it does work.

          In 4.5, is the altitude issue I expressed corrected?
          Operations Manager

          Comment


          • #6
            I stand corrected, I also have v2 and v3.12 in my hangar, but I don't use them.
            I like v4.5. I don't have a problem with the altimeter but I use FSXWX and I set the altimeter to the real world altimeter reported by FSXWX. I think you might be able to substitute VC's but have not tried to do that. I might give it a try. I don't really care for the modern panel but changing the VC might set it back to v3.12
            Last edited by BFL2632 - Richard McMaster; 12-18-2019, 09:45 PM.
            Canadian Private Pilot XDP253477... retired Flight Service Specialist

            Comment


            • #7
              Just fired up 4.5 (I keep it in my obsolete folder, the panel makes me sick). :-D

              That being said, the barometric pressure setting is SPOT ON.

              I will not be playing with moving the panels around, just not very high on a priority list at the moment. I also enjoy the shift+4 panel offered on v3.14 but missing on v4.5. Thanks for pushing me to look at this a little.
              Operations Manager

              Comment


              • #8
                A healthy debate is always good. You reminded me that there are several versions of the aircraft in the download section. I sometimes get tunnel vision and forget everything else that exists around me. I might try v3.14 again and the fix that is available to see how that works.
                Canadian Private Pilot XDP253477... retired Flight Service Specialist

                Comment


                • #9
                  Can you share some details about the fix please?
                  Operations Manager

                  Comment


                  • #10
                    I will find it and send you a link on DISCORD
                    Canadian Private Pilot XDP253477... retired Flight Service Specialist

                    Comment


                    • #11
                      Thanks! I'll review when I can and will probably updaye the original post.
                      Operations Manager

                      Comment


                      • #12
                        I look forward to your review.
                        Canadian Private Pilot XDP253477... retired Flight Service Specialist

                        Comment

                        Working...
                        X