34 minutes ago, longhaul747 said:

Even at those weights as soon as I released the brakes it started moving well on its own and I had to hit the brakes every 3 or 4 seconds just so I don't start taxiing to fast.  Some planes are like this and might be realistic.  I am obviously not a real pilot so I have no idea how the 738 is but from real life experiences on flights to from SEA to JFK in a 738 with an almost full load of passengers it took a fair amount of thrust to get moving and occasionally they had to hit a bit more thrust to keep it going.  This thing feels like the idle thrust is set a bit high.

Did you have anti ice on? That will increase the idle N1.

12 hours ago, Max Kraus said:

My PMDG experience so far has nothing of the OP's listed items. All of it is great. They have been a solid product since FS9 for me. I never communicate with the company. I never need to. Nor do I care about any of the customer bed-wetting leading up to the release of this product in 2024.

Exactly my opinion.  Those who spend time knocking PMDG should look for something else to do.  My every flight with the 737-800 ha been as realistic as one can expect. 

2 hours ago, LRBS said:

I expected the thrust to change automatically to CON, but it did not. Perhaps it's a software issue, and you'll need to set it up manually?

I can't try your scenario as I don't have the PMDG for 24; just don't see a reason to buy it after already having the iFly which flies an awful lot better (in 2020 and it doesn't sound like the PMDG flight model has much improved).

  But on this point about thrust rating - it will not change automatically to CON in a 73.  The crew needs to do it manually at the end of clean up.  In an engine failure scenario, thrust rating remains in the takeoff setting until manually changed (10 minute max limitation on takeoff thrust after an engine failure.)

51 minutes ago, Christopher Low said:

Was there snow on the ground at Seattle? The reason that I ask is because I have noticed exactly the same effect with the new PMDG 737-800 at two airports so far (EFIV Ivalo and BGGH Nuuk International). Both of these had snow on the ground, and the temperature was presumably very low. However, this has not happened anywhere else, and all of those other airports have not had snow on the ground.

I have reported this to PMDG on their forum, but I am not sure just how seriously Mathijs took my message. There is no way that the 737-800 should be moving at MTOW with idle power. It has never done this before, and does not normally move at idle for me with ZERO payload and two thirds fuel.

Based on my theory that this was happening because of very cold weather, I tested the aircraft at EFIV Ivalo in every month of the year. It started moving at idle power when parked in the months of November to April inclusive. However, it did not move in the months of May to October inclusive.

Does that make any sense to anyone?

No snow was showing on the ground at SEA.  Several miles south it started to show on the ground.  It was very foggy over the airport at the time.  Nice cool moist air is definitely good for power but not sure how much that is really modeled?  I think its mostly just temp that affects things.

At some point in the next week I will do the return flight from CUN back to SEA.  Much warmer in CUN so it will be interesting to see how it behaves?  

6 minutes ago, Stearmandriver said:

I can't try your scenario as I don't have the PMDG for 24; just don't see a reason to buy it after already having the iFly which flies an awful lot better (in 2020 and it doesn't sound like the PMDG flight model has much improved).

  But on this point about thrust rating - it will not change automatically to CON in a 73.  The crew needs to do it manually at the end of clean up.  In an engine failure scenario, thrust rating remains in the takeoff setting until manually changed (10 minute max limitation on takeoff thrust after an engine failure.)

Thanks, Andrew. That's why it's crucial to have current and qualified pilots on board and to share valuable information.

1 hour ago, martinboehme said:

Did you have anti ice on? That will increase the idle N1.

I did not turn it on.  Maybe it was on by default?  I usually start in ready for take off on the runway to save time.  Considering the conditions anti ice probably should have been on but well that is why I am confined to simulator flying.  

I think I having icing turned off in the sim but that might have been FS2020.  Should check on that!

19 minutes ago, longhaul747 said:

I did not turn it on.  Maybe it was on by default?  I usually start in ready for take off on the runway to save time.  Considering the conditions anti ice probably should have been on but well that is why I am confined to simulator flying.

I would assume that anti ice doesn't get turned on by default. PMDG might have coded a logic where it gets turned on in "ready for takeoff" state if the conditions warrant it?

In any case, might be an idea next time to check what the idle N1 is that you're getting.

3 hours ago, martinboehme said:

Did you have anti ice on? That will increase the idle N1.

I do not think that it has anything to do with anti-ice. When I experienced the problem at EFIV Ivalo, the aircraft started moving forward when N1 was barely more than 4% (as the engines were spooling up). My personal feeling is that there is a deeper issue tied to the cold weather. It is almost as if the inertia of the aircraft has been massively reduced.

OP have very valid opinion. I can only speak for 2020. No updates will come for 737, 777 I don’t know. 
For me my 737/777 fleet works pretty well. Lucky enough I also have a MAX8. 
General the PMDG is stable, and bring lots of pleasant simtime. I don’t care so much of the exterior since I do my flights in cockpit. 
But I will never ever buy my complete fleet again. I did buy to 2020

3 hours ago, jmdriskell said:

Exactly my opinion.  Those who spend time knocking PMDG should look for something else to do.  My every flight with the 737-800 ha been as realistic as one can expect. 

I concur, just completed my first cargo flight (Prime Air) and I couldn't be happier, performed flawlessly, KPDX-KONT, the autoland was like 145fpm, was impressed. I am super happy to welcome this fine plane into the new sim, worth every penny!

Happy New Year!

3 hours ago, martinboehme said:

Did you have anti ice on? That will increase the idle N1.

It will, but not enough to make this difference on a heavy airplane - in an NG.

But you know what will show breakaway behavior at idle and max gross?  A Max.  I wonder... Can we start the rumor that they've accidentally included the engine modeling from their nearly-completed-in-secret Max on the new NG?  😁

56 minutes ago, Stearmandriver said:

 

And @ahsmatt7, given the ASOBO's ground issue (ground wind velocity is 1/2 of the manually set value), I observed a 90-degree crosswind of 60 KTS, which gives me an actual 30 KTS crosswind. I recall that the airplane is certified at 33 KTS XWIND?, so we should be able to handle an engine failure on the critical side to keep it on the runway. It did not work at V1 or Vr. Same problem on the MSFS2020.

THANK YOU.

1 hour ago, Christopher Low said:

I do not think that it has anything to do with anti-ice. When I experienced the problem at EFIV Ivalo, the aircraft started moving forward when N1 was barely more than 4% (as the engines were spooling up). My personal feeling is that there is a deeper issue tied to the cold weather. It is almost as if the inertia of the aircraft has been massively reduced.

Perhaps this is some new change to SU4 related to ground friction in cold weather (e.g., cold = icy?) and it didn't get caught by PMDG or something?

8 hours ago, peloto said:

What they don´t solve it is the always gears out in their all online models, after 4 years..., like no other "study level" or not, developer.

 

10 hours ago, Pilot53 said:

Not through the tablet which is what i was referring to 

I understood perfectly well what you were refering to. That is why I said you are wrong.

Edited January 2Jan 2 by Farlis