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autopilot engage and trim sensivities

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Hi all,actually I'm getting all of my questions answers from others topics but unfortunately I couldn't find any informations or way to fix for my problems.firstly, I'm using TM2 737-200 for a long time and all patches are installed. I tried in both of FFX and original TM2 modes that is my problem as below.1-Autopilot;after takeoff, autopilot does not engage until reached 10000ft, is it normal for 737-200? also while descening and approaching, A/P does work and I'm disconnecting final phase of approaching around 8-9nm away from touchdown, but if I need A/P, doesn't work again.2-before takeoff, I'm making set of DCS for calculating EPR settings and setting elevator trim for take off positions 4.5 or 5 in green. (also fuel loading calculating, everytime fuel tanks are loading as much as necessary.)after take off, aircraft climbing too much higher vario even I set nosedown trim and reduce EPR for climb set by DCS. Also trim and elevator are too sensitive. So after take off aircraft taking too much pitchup and I'm pushing nose down with trim!I'm working to keep 250knt IAS while climbing with 2400-2800fpm until FL100 then decreasing V/S to 2000-2400fpm and increase speed up to 280IAS until FL200......etc.what can I do for these problems.Do I wrong something?can I find a new AIR or CFG files or do I need to make new settings in aircraft.cfg file?thanks

hakan"737"guven

Istanbul/Turkey

On the autopilot engage issue, I'm guessing you don't have a good dead zone around the joystick center, and/or the joystick is not calibrated for zero at center. A/P will not engage unless the axis input is zero.Trim sensitivity is probably related to the FS control acceleration...do a search for "acceleration" on this forum and you should find discussions of the issue. Also see Question #10 in the FAQ posted at top of this forum.RegardsBob ScottATP IMEL Gulfstream II-III-IV-VSantiago de Chile

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

  • Author

ok Bob, thanks for answers but just I'm curious, if we need to get good dead zone for engage A/P, how can we do that while climbing after takeoff? so our joystick position will be nose up to backward. you mean about good deadzone, should it be too close(small area)?I'm checking acceleration and question 10 , thanks for your helps.

hakan"737"guven

Istanbul/Turkey

>ok Bob, thanks for answers but just I'm curious, if we need>to get good dead zone for engage A/P, how can we do that while>climbing after takeoff? so our joystick position will be nose>up to backward. you mean about good deadzone, should it be too>close(small area)?This needs to be done before flying the sim...it's essentially a joystick calibration issue. You need a dead (null) zone large enough that any mechanical centering error (IOW the joystick doesn't return exactly to the middle when released) always returns a zero value on both aileron and elevator axes.CheersBob ScottATP IMEL Gulfstream II-III-IV-VSantiago de Chile

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

"how can we do that while climbing after takeoff? so our joystick position will be nose up to backward."After takeoff, use elevator trim (up) until you can relax the backward pressure from the joystick. Then you can engage the autopilot. R-

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