General Category > Unofficial F/A-18 Acceleration Pack board
P3d Issues with the FA-18C_FSXBA2016 16.1
jring2:
HI. I got the absolutely beautiful FA-18C which I love and works like a charm in FSX. In my P3d, however, it develops a tail wag at around 170. The tail wag can actually occur anywhere between 170 and 300 depending on conditions which I'm not able to isolate. Above 170 I can stop it with a slight rudder adjust. At 170 and below nothing stops it except disconnecting the FCS by hitting the autopilot switch. (z) So far I have tried a number of things. I tried the P3d Install in my FSX by pointing my FSX aircraft pull by changing the Airplane destination in the FSX.cfg file to point to the P3d aircraft. The P3d Airplane worked perfectly in FSX so I am guessing it isn't in the aircraft files. I tried a few tweaks in the aircraft.cfg slide slip setting on the suggestion of some senior FlightSim forum members. It caused an FCS fail warning. I also installed the aircraft into the P3d hard drive with the FSX standalone box checked on the executable. (It has its own solid state hard drive as does the FSX sim) . Still no joy. I cleaned everything up, deleting all folders and reinstalled each into its proper hard drive. Though I can fly and carrier land the sludge with no issues in the P3d I can't get this one to work so I doubted it was my controllers. However, I recalibrated my joystick. No joy. I switched joysticks from the Microsoft Sidewinder precision pro to Thrustmaster's Hotta and back with no distinguishable difference in its performance. I am hoping this has popped up before, though I wasn't able to ask the right search to bring it up. My P3d happens to be the smoothest Flight Sim for me and my system so I really would rather have your aircraft in P3d.
Great job on this aircraft by the way. It's a dream in FSX.
Any ideas on the issue I'm having? Remembered one more I didn't mention. It has exaggerated reaction to its ailerons at lower speeds. Rolls too greatly for controller input. Once again the sludge is my comparison.
PhantomTweak:
--- Quote ---...disconnecting the FCS by hitting the autopilot switch. (z)
--- End quote ---
Just so you know, that doesn't disconnect the FCS. It just lets the AP take control. To disconnect/reset the FCS, the quickest way is to lift the red guard over the SPIN RECOVERY switch, turn it on then back off again.
Just a note.
I am still at a loss about your P3D problem. I am sure some one smarter than I by far will chime in soon with the obvious answer we are missing.
Pat☺
jring2:
--- Quote from: PhantomTweak on February 15, 2017, 09:42:29 pm ---
--- Quote ---...disconnecting the FCS by hitting the autopilot switch. (z)
--- End quote ---
Just so you know, that doesn't disconnect the FCS. It just lets the AP take control. To disconnect/reset the FCS, the quickest way is to lift the red guard over the SPIN RECOVERY switch, turn it on then back off again.
Just a note.
I am still at a loss about your P3D problem. I am sure some one smarter than I by far will chime in soon with the obvious answer we are missing.
Pat☺
--- End quote ---
Thanks again Pat. You'll be able to claim me as a dependant before too long.😊
jimi08:
Jring2,
Thanks for the good words, I'll be sure to pass them along to all of those that have helped and contributed on the project.
Now for the "meat and potatoes" of the discussion.... Two things come to mind: 1. Not sure which version you have of the 16.1 (there are many...), but the Rolling Surface to Rudder Interconnect (RSRI), might still be enabled on your jet, or 2. The rudder PID needs to be adjusted.
RSRI TESTING
Easy way to test this:
-Get in FSX and load the jet.
-Press Shift + 8 to bring up the Data Gauge (if nothing shows up, grab a test or prototype jet)
-Get in the air, slow down to the problem airspeed and look for the RUDDER TRIM entry on the Data Gauge. If you notice that rudder trim is moving every time you apply lateral stick (ailerons), then I'm thinking the RSRI is to blame. I've since disabled it in later versions of the aircraft.
-So...if the RSRI is active, you have two options:
1. You can open the aircraft.cfg and change the value listed next to the "rudder_trim_effectiveness" entry. For starters, I'd recommend changing the entry listed to "0", thereby rendering any controlling authority that the rudder trim had on the aircraft to zero. If this does fix your issue, I'd recommend putting the original value back in for "rudder_trim_effectiveness" and proceed to 2. That way you can still utilize rudder trim later should you need it.
2. Other option is to disable the RSRI gauge by going to the primary aircraft Panel file, open the panel.cfg, and edit out the RSRI by adding two slashed out in front (//) of the entry. Save and reload the sim and reload the aircraft.
-If that was the culprit, then it should fix your issue.
PID TESTING
The other problem, might lie within the Rudder Proportional Integral Derivative device or "PID" for short.
To test this, do the following:
-Go to the aircraft.cfg file and luck for the "FCS" section.
-Find the "sideslip" entry and trying lowering the first value significantly. Save and reload the sim/aircraft and give it a go.
-Once the ill effects to subsided, gradually increase the first value until you get accurate turn coordination with the rudder, without the wagging.
Hope this helps.
Have a question for you. Are you running the latest version of P3D? Are all of the avionics functioning for your jet? Although my screens show up, they are not functioning. The compass rose doesn't rotate; all of the engine data parameters are readying 0. Are you getting the same indications? Thanks.
jring2:
The P3d version is 3.4.22.19868
The FA-18 I am not sure how to determine. The executable install is dated 2/8/2016
I tried all the suggestions. None corrected the tail wag. The shift 8 was revealing but I am not sure how to analyze the data I have taken two snaps - one from FSX and the other from P3d at similar speeds and position. Perhaps they will tell you something. The yaw input and rudder position would fluctuate max to max with the joystick at null position. The yaw input ranged from 99.99 to -99.99 and of course the rudder position followed from 25 degrees to - 25 degrees. In this run, I had FSX using its own aircraft, but even switching it to use the P3d install it flew no difference using the P3d install so it would seem it has to do with perhaps something in the gauges or the effects folder. Or something with how P3d relates to the FCS. I am pretty stuck. The FCS!RSRI gauge 23 was present in the FCS section but commenting it out had no impact on the tail wag. Here are the pictures. Let me know if you have any other diagnostics I could do and get more info for you.
Thanks for your help!
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