Cessna 208 Caravan wobbling on autopilot (NAV or HDG mode)

I still have dutch roll on AP. I wasn’t in SU2 beta, and after upated to SU2 I gave it a go and still have the same issue with oscillating. From what I observed YD is inneffective. Is just me? I tried with Cargo variant

1 Like

image

Maybe fixed?

Not fixed in 1.5.12 beta
YD has no impact on the roll. The constant roll is around 1.2 degrees left and right.

I checked the rollPID numbers in the ai.cfg for the 208 and the numbers were very strange compared to the other turboprops.
The numbers in the beta 1.5.12 are rollPID = 0.1, 0.5, 0.1, 8.0, 100.0
P is very low
I is high
D is very low
For example this is the numbers for the tbm930
rollPID = 1.5, 0.1, 1.2, 8.0, 100.0

So I made small mod for myself using the numbers below:
rollPID = 1.2, 0.1, 1.0, 8, 100.0

And it fixed the roll issue.

2 Likes

based on previous form, this simple fix will take the devs another 4 years to implement.

Can you give me the file path? I have the standard version pc store.
TIA.

This really is a joke that its not fixed already. The C208B is not JUST a plane. Its THE plane to use for career mode and also in general for GA geeks a very popular one :frowning:

I uploaded it to Flightsim.to it is pending approval, the name will be " Cessna C208B Caravan Autopilot Roll Fix"
Anyone who wants to give it a shot look for it tomorrow, it should be up by then.

3 Likes

It got approved, you can get it here, just drop it in your community folder, and let me know if it works as intended.
https://flightsim.to/file/94786/cessna-c208b-caravan-autopilot-roll-fix

2 Likes

I just did a test flight. It went flawlessly, no stutters no CTDs.
In fact it performed well when climbing and levelling off with AP on, no overshoot.
Going from HDG mode to NAV mode was also a success, approaching the track and locking on to it was quick with no overshoot.
I found no tendency to occilation and instability when cruising, even with moderate crosswind.
Nice job you have done, finally we can fly! Thank you.

1 Like