FORUM Forums Software CLS2SIM Software Flight Simulation Software X-PLANE 9/10/11 Profile configuration for GA aircraft – yoke physics Reply To: Profile configuration for GA aircraft – yoke physics


Here is a detailed description of the problem with using the autopilot on the XP11 default 172.

I have modified the plane’s .acf file as indicated in the CLS2Sim Help file and in the video by S Brunner using Plane Maker. The .acf lie is attached (

I have edited and used the 172 profile by S Brunner from the cloud (keeping the Software trim option). The profile is attached (Cessna 172

I take off in the plane, maintain the runway heading, climb at 700 t/min, set the VS on the autopilot to 700, engage the autopilot and VS. The plane continues to climb, BUT AT 800 FT/MIN as shown on the VSI and the elevator trim in the sim moves steadily and rapidly to its maximum down position. Except for the discrepancy in vertical speed between the value shown on the autopilot and the value on the VSI, the autopilot and the plane seem to function.

But, as you can guess because of the position of the elevator trim, as soon as I disengage the autopilot. the plane dives and accelerates and it is impossible to recover. Attached is a screenshot of the Profile manager to show the pitch values.

I have had the yoke for 2 weeks and I am still looking for basic help.

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