Milviz F-4J/S porpoising in flight

[mrogers]

Hi, I have just installed the ex payware Milviz F-4J/S Phantom in FSX Acc, a great model so well made. However when I fly it from take off to flight it porpoises so much. Is this normal? It's near impossible to manage at times and can't land properly with all this porpoising. Have I missed something in the cockpit that needs switching on, or is it something else? I have read all the documentation but can't find any reference pertaining to it. Any advice from MIlviz F-4 owners would be appreciated. Thanks

 

[mrogers]

Anyone? Is this too complicated?

 

[J.Case]

Sorry - I don't have it - But: The F4 did have a Stab-Aug-System that should be activated if simulated. The control panel ist probably somewere around the throttles..... Good luck with your Double Ugly

 

[vonstroheim]

There is some threads in the P3D forum about the same issues. Some fixes include:
- stick to base version and don't install or uninstall ADV (advanced) version
- turn on 3 switches in the cockpit (yaw-roll-pitch near throttle levers)

In my case, I can fly without too much problem the Milviz F-4J or S, she's a bit slippery like the SSW F-104 Zipper. It's an acquired taste, but fun... Unfortunately with my aging laptop, FPS are not good, and in some cases, FSX crashes with out-of-memory error... It's a pity because it's indeed a very nice and detailled rendition of the famous Phantom.

More details here:
https://sim-outhouse.org/sohforums/...viz-freebies-phantom-f-4j-only-issues.131681/
https://sim-outhouse.org/sohforums/threads/milviz-phantom-f-4e-adv-hard-to-fly.119734/
https://sim-outhouse.org/sohforums/...s-e-j-s-adv-new-updates-through-mvams.116340/

And download is here:
https://blackbirdsims.com/flight/freebies.php

 

[Psyoper]

The stability augmentation needs to be on. Three switches left panel about level with shoulders. Impossible to fly without and difficult with.

 

[LJToranaXU1]

I haven't experienced the porpoising you mention but I have found the pitch trim to be rather sensitive. If the elevator trim isn't set just right the aircraft will tend to nose up or down significantly after takeoff and it's easy to overcorrect the trim when trying to correct a nose up/down trim etc.