Severe problems with flight performance, even after service pack

[svogeler 0]

Graphics and sounds of the Carenado Grand Caravan are great, but unfortunately I still have severe problems with its flight performance, even after installing the service pack. I will try to explain my problems in the following:I have FSX Acceleration and already reinstalled the Caravan package including the service pack several times (verifing that before reinstalling all existing files of the previous installation have been successfully removed). I load the FSX default flight with the standard Cessna 172, engines off, then I load the Caravan. During takeoff, with flaps 20 and torque of 1900 lb-ft, the plane accellerates very slowly taking almost the whole runway and even in the air it accelerates not beyond 80 kts. When I then once press the #-key (speed brakes), the plane quickly starts to accelerate as it should and seems to behave normally during cruise flight (reaches approx. 160 kts with cruise flight settings). Thus, I accustomed myself to pressing the #-key once during my takeoff check in order to be able to perform a normal takeoff run. Wondering if anyone else has experienced that, but anyway this trick works great for me.The bigger issue I have with the flight performance occurs during landing. With full flaps, throttle to idle resulting in 500 ft-lb torque, and an approach speed of 80 kts I am not able to increase the sink rate to more than 400 ft/min. That is not enough to establish on a 3 degree glide path. If I reduce speed to 70 kts the sink rate gets even below 300 ft/min. During flare, the plane does not lose speed and glides a few feets above the asphalt along the whole runway instead of touching down. I first thought it might be a calibration error of my throttle hardware, but then double checked that this is not the case, the throttle out value is -16383 in FSUIPC. Furthermore, I have no such problems with any of my other addon planes (including some from Carenado also).Does anyone has an idea what could cause the strange flight performance effects on my system? I would highly appreciate any helpful advise, because I would love to fly this great addon to the smaller airfield of PNW - which is currently not possible for me with the above described landing characteristic.Best Wishes,Sven

[FlyinIron406 3]

Hey Sven,These are very odd issues indeed. To possibly counteract the issue of no acceleration, I would delete the Default flight line in your FSX.cfg, and let it rebuild. I would load from there. People that experienced this slow acceleration problem, have stated that if you have a flight saved that has the SPOILERS (default key of " / ") or the Carb Heat (default key " H ") toggle, that this results due to the Inertial Separator.During the FDE testing, especially with the new patch, this landing behavior was DEFINITELY not noticed. For most, going power idle results in a rapid deceleration and sink rate, just as the real airplane does. How are you loading the airplane? Can you give us an example airport with an example loadout? This is very confusing, and very opposite with what everyone else experiences! I will do a flight tomorrow night (it's already 930pm here in Hawaii), and see if I can accomplish your results!I know this wasn't too helpful, and I apologize, but I like to chime in on FDE questions. I'll get back when I've flown a flight!K r e g

[svogeler 0]

Hi Kreg,thank you very much for your help. I deleted my default situation and let the FSX rebuilt it - resulting in the ultralight flying over Friday Harbour. Unfortunately, that didn't change the strange takeoff and landing behaviour on my system. However, today I came a big step ahead in my investigations: After completely disabling FSUIPC and assigning all axes back to FSX control, all my above described problems have gone away and the plane behaves perfectly. Thus, I assume that there is some setting regarding the spoilers in my FSUIPC configuration, that leads first to too much drag and after pressing the spoilers-key to not enough drag. I couldn't find any relating settings via the FSUIPC GUI, so now I try to learn the syntax of the FSUIPC.ini file in order to manually correct the parameter causing my problems. :( I am still wondering, why I haven't experienced such problems before with any of the many, many other addon planes I own... :( Anyway, thanks again for your help. I keep you updated on my troubleshooting progress.Best Wishes,Sven

[svogeler 0]

Problem solved, my Grand Caravan now flies like it should. I am sooo happy!!! :biggrin:Deleted the line "Spoilers=-16380,16380/24" from my FSUIPC.ini. It caused FSUIPC to process my spoilers axis even though I currently hadn't assigned it to any joystick axis. I think I had configured it for the DiscusX addon some time ago and since then it has been active for all my addons. Fortunately, FSUIPC allows to assign this to a specific aircraft only, in my case the DiscusX.Best Wishes,Sven

[FlyinIron406 3]

Great to hear it was something, somewhat, simple! Enjoy it!!!