I really like this plane but on my system, the longitudinal stability just seems not right. 

 

The altitude indicator and the rate of climb indicator are always shifting much too rapidly. ex: The plane can start an assent from 0 to 1500 ft per minutes in a fraction of a second. Then if I push on the yoke, he will start a descent in less than a second also to the maximum descent rate. I'm always chasing the altitude and the plane react as if it has no inertia at all. Just seem wrong even if I haven't flown C337 in real life.

 

I have a CH product yoke and I adjust my axes with FSUIPC. All my other airplane are stable but only this one is overreacting. I have put a slope adjustment in FSUIPC that ensure a minimum response while in the middle of the yoke elevator range.

 

I have reduced the Elevator_Effectiveness from 1.0 to 0.7 in aircraft.cfg which improved the stability but still the altitude is shifting much too rapidly.

 

Any idea on the next step to improve further?

 

 

If you are tuning the aircraft.cfg file, I might try increasing

 

[flight_tuning]
 
pitch_stability                =  1

 

and / or

 

;Moments of Inertia
empty_weight_pitch_MOI  = 2900

Hi Bert,

 

Thanks for the tips... I will play around with those values. Any upward limit on the pitch stability ?

 

Your name is not unknown to me as I have seen it mentioned several time in thread. Thanks for your involvement in the community.

 

Best,

Pierre, this is a trial and error business B)

 

I typically start by changing values by 10-20%.

 

Change the 1.0 to 1.2 and see what happens.

 

Keep a good copy - just in case you make it worse, rather than better..

 

The "Tuning" section is meant to be adjusted by users, the other sections less so.

 

But that should not keep you from trying :rolleyes:

Ok, I will try mingle with those tuning. 

 

Wasn't aware that the tuning section was there for users. I was on the impression that the flight model should be kept as intended by the publisher (or modified by you... ;-)  ).

 

And yes, I will do a copy before...  ;-)

 

Thanks,

Different computer systems, different controllers, different users...

 

One size does not fit all :mellow:

Ok I made some adjustment and much better.

 

Plane is not on rail but it's not a roller coaster anymore.....

 

Made a couple of ILS 06 and NDB 30 approaches at CYQB in preparation for my RW Upcoming IFR test flight.... Great.

 

Thanks...