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Electric trim in the PMDG737 (´s)

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Have you noticed that the PMDG 777F does not appear to exhibit that little "wobble" before it makes a turn like the 737 does? I wonder what the difference is?

Christopher Low

AMD Ryzen 7 9800X3D CPU / 64GB DDR5-6000 RAM / 12GB Nvidia RTX 4070 Super GPU / Gigabyte X870E Aorus Elite Wifi 7 / 1+2TB Samsung Evo Plus M2 Nvme

UK2000 Beta Tester

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  • Stearmandriver
    Stearmandriver

    To be honest, hand flying has always been a weak spot of the PMDG.  There are several strange things about their flight model that they've always kind of ignored.  I've seen them push the narrative in

  • Stearmandriver
    Stearmandriver

    Hard to phrase it any better than that.

  • Since I got the iFly Max, I haven't touched either the PMDG 737 or the 777. To me, they are not top-tier anymore. 

8 hours ago, Christopher Low said:

Have you noticed that the PMDG 777F does not appear to exhibit that little "wobble" before it makes a turn like the 737 does? I wonder what the difference is?

I didn't buy the 777F; I only have the 300. It's such a shame they've sacrificed quality for quick profits. It's amazing that they still maintained quality control on the P3D platform. I'm just waiting for the 744 and 748, and hopefully, they won't mess those up. Unfortunately, I can't get past who they used to be and who they've become today. 

747 Captain for the last 39 years, and still learning. 

I can't get over $60 for a "version" of the 777. $25 or $30 would be a buy.

Steven_Miller.png?dl=1

i7-6700k Gigabyte GA-Z170X-UD5 32GB DDR4 2666 EVGA FTW ULTRA RTX3080 12GB

30 minutes ago, LRBS said:

I didn't buy the 777F; I only have the 300. It's such a shame they've sacrificed quality for quick profits. It's amazing that they still maintained quality control on the P3D platform. I'm just waiting for the 744 and 748, and hopefully, they won't mess those up. Unfortunately, I can't get past who they used to be and who they've become today. 

Since I got the iFly Max, I haven't touched either the PMDG 737 or the 777. To me, they are not top-tier anymore. 

 

 

 

32 minutes ago, Bobsk8 said:

Since I got the iFly Max, I haven't touched either the PMDG 737 or the 777. To me, they are not top-tier anymore. 

Unfortunately, that's why I was so critical of them. Stating the obvious facts didn't sit well with certain people, who believed fighting the truth was more important than calling out the obvious and improving the product. Sadly, from a very good company, they have fallen behind many developers. Hopefully, RSR will wake up before he tanks the company.

747 Captain for the last 39 years, and still learning. 

  • Commercial Member

I wonder can all of these issues, including trimming, be solved by using Spad.Next. I bought it long ago for P3D needs (and used it primarily), and now considering renewing my yearly license.

Current system: ASUS PRIME Z690-P D4, Intel 12900k, 32GB RAM @ 3600mhz, Zotac RTX 3090 Trinity, M2 SSD, Oculus Quest 2.

1 hour ago, Bobsk8 said:

Since I got the iFly Max, I haven't touched either the PMDG 737 or the 777. To me, they are not top-tier anymore. 

I remember all good times when you used to say PMDG is better LOL Look at you now! 😉

Life time flight sim enthusiast, current airplane owner 172P (past C182F). FAA CP/IR ASEL/AMEL, FI ASEL

My System: AMD Ryzen 9 9950X3D , MSI X870 GAMING PLUS, 64G RAM, ASUS RTX5090, 4T SSD

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1 hour ago, LRBS said:

I didn't buy the 777F; I only have the 300. It's such a shame they've sacrificed quality for quick profits. It's amazing that they still maintained quality control on the P3D platform. I'm just waiting for the 744 and 748, and hopefully, they won't mess those up. Unfortunately, I can't get past who they used to be and who they've become today. 

Does the 300ER exhibit the "wobble" before a turn? If not, I am just wondering why it has not been corrected in the 737. Maybe that is something that they will sort out when they finally get around to updating it?

Edited by Christopher Low

Christopher Low

AMD Ryzen 7 9800X3D CPU / 64GB DDR5-6000 RAM / 12GB Nvidia RTX 4070 Super GPU / Gigabyte X870E Aorus Elite Wifi 7 / 1+2TB Samsung Evo Plus M2 Nvme

UK2000 Beta Tester

44 minutes ago, Christopher Low said:

Does the 300ER exhibit the "wobble" before a turn? If not, I am just wondering why it has not been corrected in the 737. Maybe that is something that they will sort out when they finally get around to updating it?

Unfortunately, all their jets suffer from bad LNAV or AP interface to a certain extent. Sometimes, it is less pronounced, and sometimes, it is terrible. Watching very closely, from my point of view (having in view that I flew these airplanes), because of the wrong turn anticipation calculations, I have the urge to disconnect the AP and initiate the turn before it happens. It's not a good feeling, and that's the reason why you notice this "wobble," unnecessary turns left/right before/after the turn. The real airplanes in LNAV initiate and finish the turn very smoothly and precisely on the magenta line. Now, on HDG to intercept a LOC, you will see very little overshoot; it's not an AIRBUS, which is as smooth as a Cadillac. This is what drives many crazy; instead of taking time to fix it, they prefer to engage in unproductive arguments or deny the obvious. 
 

747 Captain for the last 39 years, and still learning. 

  • Commercial Member
29 minutes ago, LRBS said:

Watching very closely, from my point of view (having in view that I flew these airplanes), because of the wrong turn anticipation calculations, I have the urge to disconnect the AP and initiate the turn before it happens. It's not a good feeling, and that's the reason why you notice this "wobble," unnecessary turns left/right before/after the turn. The real airplanes in LNAV initiate and finish the turn very smoothly and precisely on the magenta line.

If that is truly the case, it means that PMDG is even worse than the default 787 and 748 regarding the LNAV implementation.

1 hour ago, Pe11e said:

I wonder can all of these issues, including trimming, be solved by using Spad.Next. I bought it long ago for P3D needs (and used it primarily), and now considering renewing my yearly license.

I'm not familiar with Spad.Next, I can speak for FSUIPC, where you can adjust the trim speed and cancel that momentary delay when you activate any trim switches. For the 777, the problem is within coding.

747 Captain for the last 39 years, and still learning. 

8 minutes ago, fsiscool said:

If that is truly the case, it means that PMDG is even worse than the default 787 and 748 regarding the LNAV implementation.

Ahh, you see, the PMDG spent lots of time in coding for the LNAV. Again, they stop short of testing and implementing correct behavior. We cannot compare apples with oranges here. Unfortunately, for sure it is not what the real airplane or the competition does. 

747 Captain for the last 39 years, and still learning. 

  • Commercial Member
17 minutes ago, LRBS said:

Again, they stop short of testing and implementing correct behavior. We cannot compare apples with oranges here.

Yes, but when scrictly talking about LNAV precision, according to your description they are even falling back behind the default Boeing aircraft.

57 minutes ago, fsiscool said:

Yes, but when scrictly talking about LNAV precision, according to your description they are even falling back behind the default Boeing aircraft.

The PMDG's LNAV coding is likely superior to that of the default Boeing aircraft. However, the issues arise from the implementation and interaction among the autopilot (AP), flight director (FD), and certain computations. What I notice missing in the default Boeing aircraft is the unrealistic, wobbly behavior that can be observed in the PMDG. From that perspective alone, there is a clear winner here. 

747 Captain for the last 39 years, and still learning. 

3 hours ago, LRBS said:

instead of taking time to fix it, they prefer to engage in unproductive arguments or deny the obvious. 

That's been the most frustrating thing about PMDG over the last few years, exactly.  I've been interacting with the iFly devs about their Max (which I do agree with Bob; taken in total it's probably already better than the PMDG) and the difference is night and day, in terms of being pleased to consider feedback from folks with real-world experience.  I do understand that from a dev's point of view a certain amount of "vetting" of a source is necessary, but I think at some point you can figure out who you're talking to.  It got so tedious, needing to literally argue with RSR over the reality of every minor point, when the man has never even flown a Boeing. 

I, too, hope they reevaluate at some point.

Andrew Crowley

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