Try this...http://dl.dropbox.com/u/1192596/Cessna_172SP.acfDrop it into the C172 root folder.It's still being worked on. VegaSS has sent me some good feedback but I haven't been able to do anything to it just yet because I'm working on my own stuff atm. When I finish with that, I'll mod the C172 a little more.

Encountered this same problem, and it kind of fixed itself during an update. Have you updated to the latest beta? Also, any other controllers plugged in?

Thanks much. I'll give it a try. In the meantime I downloaded the latest version of N9522S. He has made some nice changes in the flight model and it flys pretty good but still has the left bankiing tendency.Correction to my previous post: I stated that the trim wheel parameter so it didn't take so many turns for full nose down trim. The parameter is not measured in turns but in "seconds until full deflection". Of course the more seconds it takes the more turns it will take also. The stock 172SP was set to something ridiculous like 20 seconds. I cranked it down to 10. N9522S has it set to even less, 8 seconds, but that feels a bit touchy to me so I think I will bump it up to 10.I will report back after trying your .acf, GoranM. Ken

Thanks much. I'll give it a try. In the meantime I downloaded the latest version of N9522S. He has made some nice changes in the flight model and it flys pretty good but still has the left bankiing tendency. Correction to my previous post: I stated that the trim wheel parameter so it didn't take so many turns for full nose down trim. The parameter is not measured in turns but in "seconds until full deflection". Of course the more seconds it takes the more turns it will take also. The stock 172SP was set to something ridiculous like 20 seconds. I cranked it down to 10. N9522S has it set to even less, 8 seconds, but that feels a bit touchy to me so I think I will bump it up to 10. I will report back after trying your .acf, GoranM. Ken

XP didn't like the .acf at all. Claimed it was corrupted, etc. I'm on 9.70. I know 9.21 and prior planes will not work on 9.7. I don't know about XP 10 but I would assume that they won't work either.HyFlyer: I'm not on V10 yet. When I read that Austin was completely re-writing the code I saw heavy seas ahead so I figured I would hang back on shore until the worst of the storm is over.

The C172 I modified was modified in XP10. XP10 aircraft will not work in XP9.7. Let me know if you want the same mods done for the 9.7 Cessna and I can do that sometime in the next hour or so.

Thanks! Yes, if you could I would really appreciate it. Like I said, I'm going to hold off on XP 10 for a while.

XP9 C172 modified Flight model...http://dl.dropbox.com/u/1192596/XP9C172/Cessna_172SP.acf

Pitch control is hypersensitive. All in all, the sim is not flyable. It's behaving very much like the controls aren't calibrated.Since there are thousands of people who are very happy with XP, I'm obviously doing something wrong but I cannot for life of me understand what.I'm running XP 10, latest update (as of about a week ago) on Windows 7 x64.Does anybody have any suggestions/insights?Thanks!-M.

I suggest clicking on Data Input and Output and display your control deflections on the screen. This helped me identify that my 12 year old rudder pedals needed a new potentiometer. I noticed ghost inputs by the rudder which were upsetting the flight model. A null zone of 3% fixed that for me. Outputting your flight control and trim deflections will help you evaluate and trouble shoot the flight model.

As much as would like to help, I agree with you, X-plane's flying caracteristics are not to be desired. With that said, I will await the flames. Just keep in mind, this is someone else having similar problems now guys. I'll just sit back, have a drink, and watch the show now. :(

+1 I recently switched to X-Plane and am still disappointed with the flight model, although the freeware x737 seems to be the only thing that feels a bit realistic. I have not found a prop plane that flies anything close to real life. If you have flown anything by Rob Young for FSX or Fly! 2K you will most likely be very disappointed with the X-Plane general aviation models.

Try this...http://dl.dropbox.co...essna_172SP.acfDrop it into the C172 root folder.It's still being worked on. VegaSS has sent me some good feedback but I haven't been able to do anything to it just yet because I'm working on my own stuff atm. When I finish with that, I'll mod the C172 a little more.

I tried this modified acf and am still quite a bit disappointed. It seems to be the opposite of the default C172, way too much inertia and not enough control authority in all axes. I experienced both pitch and roll oscillations and was unable to even point the aircraft at the runway. I ended up crashing next to the runway as the pitch and roll oscillations increased to a point where the aircraft became uncontrollable. Here is an example of the roll oscillation. I turned the yoke to the right for a fine directional adjustment. The aircraft started turning with more inertia, which was a welcome sight. After the aircraft rolled to the desired bank angle i centered the yoke to limit the roll. The aircraft kept rolling to the right. I turned the yoke more to the left but the aircraft was still rolling to the right. Eventually the aircraft stopped rolling and started rolling to the left with lots of inertia. I applied full right yoke to try and limit this but the aircraft kept rolling to the left. I was unable to level the wings of the aircraft and fly it level until it hit the ground, this roll oscillation only increased in amplitude. The same happened with pitch. The pitch axis still oscillates like the default "paper airplane" C172, but with a much lower period. I don't want to call it a phugoid because a phugoid is even lower period. I prefer to call this oscillation "unrealistic X-Plane short period pitch oscillation".I was unable to arrest the pitch and the roll oscillation until i hit the ground. I have a little bit of time in a real C172 and it definitely does not display this kind of instability. i am using Rob Young's v88 C172 for Fly! 2K as my reference model and it flies very close to the real one. With predictable stability, inertia and total control. I would recommend turning down the inertia a bit and increasing control authority. I am not sure what can be done about the pitch and roll oscillations. There has to be a way to damp them out.

Edited February 23, 201214 yr by 800xp

Hey Goran, is your Beech Sundowner ready for xp10? everytime I load it up I get an error about some file not being found?

I suggest clicking on Data Input and Output and display your control deflections on the screen. This helped me identify that my 12 year old rudder pedals needed a new potentiometer. I noticed ghost inputs by the rudder which were upsetting the flight model. A null zone of 3% fixed that for me. Outputting your flight control and trim deflections will help you evaluate and trouble shoot the flight model. +1 I recently switched to X-Plane and am still disappointed with the flight model, although the freeware x737 seems to be the only thing that feels a bit realistic. I have not found a prop plane that flies anything close to real life. If you have flown anything by Rob Young for FSX or Fly! 2K you will most likely be very disappointed with the X-Plane general aviation models. I tried this modified acf and am still quite a bit disappointed. It seems to be the opposite of the default C172, way too much inertia and not enough control authority in all axes. I experienced both pitch and roll oscillations and was unable to even point the aircraft at the runway. I ended up crashing next to the runway as the pitch and roll oscillations increased to a point where the aircraft became uncontrollable. Here is an example of the roll oscillation. I turned the yoke to the right for a fine directional adjustment. The aircraft started turning with more inertia, which was a welcome sight. After the aircraft rolled to the desired bank angle i centered the yoke to limit the roll. The aircraft kept rolling to the right. I turned the yoke more to the left but the aircraft was still rolling to the right. Eventually the aircraft stopped rolling and started rolling to the left with lots of inertia. I applied full right yoke to try and limit this but the aircraft kept rolling to the left. I was unable to level the wings of the aircraft and fly it level until it hit the ground, this roll oscillation only increased in amplitude. The same happened with pitch. The pitch axis still oscillates like the default "paper airplane" C172, but with a much lower period. I don't want to call it a phugoid because a phugoid is even lower period. I prefer to call this oscillation "unrealistic X-Plane short period pitch oscillation".I was unable to arrest the pitch and the roll oscillation until i hit the ground. I have a little bit of time in a real C172 and it definitely does not display this kind of instability. i am using Rob Young's v88 C172 for Fly! 2K as my reference model and it flies very close to the real one. With predictable stability, inertia and total control. I would recommend turning down the inertia a bit and increasing control authority. I am not sure what can be done about the pitch and roll oscillations. There has to be a way to damp them out.

I did the mods in literally a few minutes. To give you an idea on flight model developemnt, I normally take about 2 weeks for a single engine GA to a year for a Saab 340.It was a quick and dirty fix. I'm relying on peoples feedback as I have never flown a C172 before. I'm rated on Beechcraft aircraft.After I finish my current project (11 months in the making and counting) I'll do more to the 172.

Hey Goran, is your Beech Sundowner ready for xp10? everytime I load it up I get an error about some file not being found?

Could you be more specific what the error says and I'll do my best to help you out.

Hi Goran, sorry for the late response, but I have a puppy. This is the error I am getting, I have no idea what it means. Sometimes the plane loads sometimes the sim crashes(which is odd for XP).

Taking it private.Check your inbox.