Imo, trimming is not working correctly , but it's not that bad I would consider it unflyable. 

In basic, trimming is second nature. You will notice when either level, climbing or descending that you are needing to add pressure fore or aft in able to maintain a given pitch/attitude. In second nature without thinking about it much, you add clicks of trim. When ever hand flying, prior to handing over the aircraft it is very customary to hand it off trimmed. Some guys do a trim check by letting go of the yoke and clicking in trim as needed and then hand off the aircraft. Power setting, speed and configuration changes will effect the trim requiring some clicks. Trim is usually added in shots/clicks but may take longer clicks when performing maneuvers such as takeoff. The aircraft is trimmed for V2 and as you rotate and accelerate past V2, the nose begins to rise requiring some forward pressure and long nose down click to trim for initial climb out speed. Some sophisticated aircraft such as the 777 will auto-trim in certain situations such as speed changes, etc. To the pilot flying, you will notice that you don't have to trim as much. Trimming the aircraft is totally reactive as you respond to yoke pressure. When properly trimmed, the aircraft will naturally want to maintain current pitch attitude when the yoke is released. The Gulfstream doesn't have auto-trim like the 777, but it has the stab synced with the flaps. The leading edge of the stab will move along with flap positions to cancel out trim forces and ballooning. With that in mind, I haven't had a problem hand flying and trimming the PMDG 777. The only issues that I have in some FSX aircraft is that the trim effectiveness is either too much causing over trimming with clicks or not enough requiring lots of clicks.

There are changes being made to the FBW for the service pack - the exact nature of them will be detailed to you guys when we're satisfied that it really is correct now. There's a lot of conflicting information we received during development and some of it, despite coming from a reputable source, ended up being incorrect.

To whoever was saying it though, the system was not "completely rewritten" - the vast majority of what it's doing internally is correct, there's just a few things (which are actually pretty small code changes) that have a big effect on how it flies and feels.

 

 

To whoever was saying it though, the system was not "completely rewritten" - the vast majority of what it's doing internally is correct, there's just a few things (which are actually pretty small code changes) that have a big effect on how it flies and feels.

 

This comment puts everything regarding this issue crystal clear.

 

Thank you very much Ryan for the update.

 

Cheers.

There are changes being made to the FBW for the service pack - the exact nature of them will be detailed to you guys when we're satisfied that it really is correct now. There's a lot of conflicting information we received during development and some of it, despite coming from a reputable source, ended up being incorrect.

 

To whoever was saying it though, the system was not "completely rewritten" - the vast majority of what it's doing internally is correct, there's just a few things (which are actually pretty small code changes) that have a big effect on how it flies and feels.

 

 

 

Thanks for the update Ryan...

 

777 pilots on the forum spotted it was wrong immediately, as did amateurs like myself.

 

I'm a bit bemused therefore how the real world 777 pilots on the test team didn't spot it immediately.

Thanks for the update.

 

We appreciate that PMDG listened to its customers and I wish others would learn form you guys.

 

As for the poster who said that there was nothing wrong with trim, just shows how ignorant THEY are.

There are changes being made to the FBW for the service pack - the exact nature of them will be detailed to you guys when we're satisfied that it really is correct now. There's a lot of conflicting information we received during development and some of it, despite coming from a reputable source, ended up being incorrect.

 

To whoever was saying it though, the system was not "completely rewritten" - the vast majority of what it's doing internally is correct, there's just a few things (which are actually pretty small code changes) that have a big effect on how it flies and feels.

Just to clarify, that was me and that is what support told me:

 

"FBW in general is being completely reworked based on some extensive data provided by our Pilot Group and from the Sim Video detailing the actual operation of items that can't be done easily in the real aircraft.   Watch for an update with the SP1 update that should improve things dramatically."

 

Thank you for making it clear and official. Anyhow, im looking forward to the changes an to your continuing support..

 

kind regards.

Also, in the final stages of landing, the planes' trim will function as in any airplane...you use trim a you would in a 737, 767 etc. 

Heck even I am bad at trimming only fly small birds and no AP.

 

 Guess everyone must be knowing this , just refreshing myself ,  when your intended altitude is e.g. 3000 and your VVI - VSI is showing you a climb rate of e.g. for 172 I guess is 700 fpm then you start leveling off 10% of the VVI-VSI that would at 2930 feet and keep her leveled till the speed comes up to the cruise  and your altitude is 3000 hold her and start trimming. you will need to adjust power accordingly. You have to hold her well. use the stick together with the trim. You shall notice if the aircraft is not trimmed correctly as either she will go down or up. and the trim may not last for the entire flight as there are many things working so you have to watch her. 

  

Its like this ATP / PAT .    attitude power trim (I use it during a climb )  / power attitude trim (this one IIRC is for a descend).

 

Hope I am right

ive just flew with the primary flight computers disconnected and it is quite easier to fly than the computers on.

How do you turn those off?

 

Jim B

There are changes being made to the FBW for the service pack - the exact nature of them will be detailed to you guys when we're satisfied that it really is correct now. There's a lot of conflicting information we received during development and some of it, despite coming from a reputable source, ended up being incorrect.

 

To whoever was saying it though, the system was not "completely rewritten" - the vast majority of what it's doing internally is correct, there's just a few things (which are actually pretty small code changes) that have a big effect on how it flies and feels.

Thats good news. This is the only heavy that I really struggle to hand fly. The NGX and MD11 are fun to hand fly but the T7 feels strange and hard to hand fly. Its almost like the plane is working against you when trying to trim and pitch on final. One push of the trim down button and your thrust down or visa versa.

 

How do you turn those off?

 

Left upper corner of the overhead panel very close to the adiru

Also, in the final stages of landing, the planes' trim will function as in any airplane...you use trim a you would in a 737, 767 etc. 

 

The final stages of landing don't require trimming in a different manner to any other phase of flight.