Hi all,I recently decided to spend time back in the JS41 while I await the release of the 737 NGX. This AC reminds me how detailed the PMDG group is in their aircraft systems and operations. Everything has worked fine and I run it with Video Marshaller and FS2 Crew. The only problem I seem to have is that the AC climbs incredibly slow and I am never able to get much more than about 170 knots on a 500FPM climb or even after I level out, I still cant't get the aircraft to fly at the speeds it should. It seem as if the AC is not trimmed out and seems to be pitched up when I go to the outside views. I have tried trimming it down and pick up speed but as soon as I reengage the AP it slows down and settles in around 170 knots. Any suggestions greatly appreciated. I make sure the AC has a balanced load and the CG is center forward. Thanks in advance for any suggestions.Joe

Hi,1. Are you sure that you have start locks removed?2. Are you sure that you don't exceed MTOW? (Like 24 pax and 100% fuel, remember that you set fuel via FSX menu not via spreadsheet)3. What is the maximum FL you can climb to?4. What weather system do you use? (There was some bug with VATSIM weather setting to high temperatures, which results in similar behavior)The plane is trimmed correctly, it's just AP increasing AOA because of low airspeed, that's normal.

Hi,1. Are you sure that you have start locks removed?Yes, double check, handle 'down'2. Are you sure that you don't exceed MTOW? (Like 24 pax and 100% fuel, remember that you set fuel via FSX menu not via spreadsheet)21,551 19 pax plus crew3. What is the maximum FL you can climb to?16,0004. What weather system do you use? (There was some bug with VATSIM weather setting to high temperatures, which results in similar behavior)Active Sky EvolutionThe plane is trimmed correctly, it's just AP increasing AOA because of low airspeed, that's normal.

UnderstandThis is just painful to fly at 169 to 173 knots. Torque 70%, EGT to lower right white line. Just don't understand why. I check the weight and fuel in FSX and all looks good. Just the aC seems gutless.Any other ideas?Joe

Do you use default trike or Cessna as startup flight for FSX? I can't think out anything else, at FL160 this bird should go about 230 KIAS, maybe try contacting PMDG directly via Support Desk, because no one looks in this part of forum right now.

170kts is the normal best climb speed on the J41. SOP for climb out is to set 170IAS and let the AP adjust pitch as needed and yes, it can drop to 500fpm. This is not a powerful bird.I suggest you work through the tutorial flight again to see if there is some step you are missing or mis-understanding. Remember to adjust RPM after takeoff to 98% and then monitor power to stay slightly above the lower EGT mark.

Reducing the RPM isn't mandatory though. You can leave them at 100% the whole flight and it will definitely help your performance on hot days or in icing, as the EGT is lower at higher RPM.

I suggest you work through the tutorial flight again to see if there is some step you are missing or mis-understanding. Remember to adjust RPM after takeoff to 98% and then monitor power to stay slightly above the lower EGT mark.

That's what I was about to say. Many times, issues like this are found as errors in the seat-to-yoke interface. Since you have FS2Crew, make sure you read that manual, too. There are certain things the FO will do when you go through the checklist that you may only hear (the clicks in the background).You say "double check handle down." The start locks are off when you hear the FO callout of "Start locks removed." What handle are you referring to?

That's what I was about to say. Many times, issues like this are found as errors in the seat-to-yoke interface. Since you have FS2Crew, make sure you read that manual, too. There are certain things the FO will do when you go through the checklist that you may only hear (the clicks in the background).You say "double check handle down." The start locks are off when you hear the FO callout of "Start locks removed." What handle are you referring to?

Good point about FS2Crew doing things in the background.I never call for the after takeoff checklist as the FO will reduce the RPM, I just call for flaps up at my acceleration point.This allows me to climb at 100 % RPM (it also prevents the FO from turning off the landing lights. I wait until 10K ft to avoid a FSPassengers penalty).

[...]it also prevents the FO from turning off the landing lights. I wait until 10K ft to avoid a FSPassengers penalty.

Another reason I won't buy that program. It's not the landing lights that keep you visible with the J41, it's the Conspic. lights...

Another reason I won't buy that program. It's not the landing lights that keep you visible with the J41, it's the Conspic. lights...

Yes, a bit of workaround is required because I believe the landing lights are on the gear and get turned off rather early. FSPassengers is a fantastic program though and you can use it with all your aircraft. FS2Crew is aircraft specific but I also think that program is well worth it. Take care

That's what I was about to say. Many times, issues like this are found as errors in the seat-to-yoke interface. Since you have FS2Crew, make sure you read that manual, too. There are certain things the FO will do when you go through the checklist that you may only hear (the clicks in the background).You say "double check handle down." The start locks are off when you hear the FO callout of "Start locks removed." What handle are you referring to?

I will give your suggestions a try. I fly out of Salt Lake City, which at this time of year is a high density altitude airport. The temps have been in the mid 90s to low 100's and that may be contributing. I am also watching the icing and long cycle setting. I will sort it out and I will try NOT doing the after TO checks with FS2 crew and see what gives.Thanks all.JoeThe handle I refer to is the gust lock . . .

The handle I refer to is the gust lock . . .

Yeah, that's not it at all. The gust lock will prevent the use of much throttle at all in FS, but the start locks are completely different:http://forum.avsim.net/topic/261431-js41-startup-guide/Make sure that after starting, you're dropping the throttle levers back into reverse briefly. You will hear "start locks removed" and you're good to go.

Start latches will prevent you from going beyond about 35% torque, so you're not going to get airborne unless the engines are off the start latches.Joe, I think your answers are the combination of high loading and high density altitude. I'd love to know what you're seeing for OAT when you experience this. Remember that the ambient air temperature can really affect the EGT.Another thing that really hurts performance is to have the engine anti-ice on.

Start latches will prevent you from going beyond about 35% torque, so you're not going to get airborne unless the engines are off the start latches.Joe, I think your answers are the combination of high loading and high density altitude. I'd love to know what you're seeing for OAT when you experience this. Remember that the ambient air temperature can really affect the EGT.Another thing that really hurts performance is to have the engine anti-ice on.

Thanks, I believe you may be right, the OAT has varied from 33c to 43c. I also thought I may have left the long cycle on the anti ice and I will try to alieviate thet issue on the next flight out of KSLC (Salt Lake City) to KSGU (ST George Utah). Thanks for all the suggestionsJoe