I recently rediscovered a freeware Piper Cherokee Warrior II I'd installed in FSX about a year ago, and decided to fly it today from KPSP to KSLC. I was very happy with its performance because it "felt" very similar to one of the Piper Cherokee Warriors I trained in, and it behaved accordingly. Unfortunately it has a 2 degree bank to the right that I can't correct. Ground taxiing is a bit bothersome because the airplane insists on veering to starboard with even a little throttle power. Opposite rudder counters the yaw, but not the roll/bank.When AP is activated she flies straight ahead and on heading, but not "true"; she still has that 2 degree bank, and if I look out of my port side I can see that the port aileron is slightly deflected downward, and my attitude indicator shows the same 2 degree bank. Is there a setting in its aircraft.cfg I can tweak to correct this? The airplane's file name is Warrior_II.zip, and I believe it's available on several good websites. Some advice on this would be appreciated; she flies better than the payware Cherokee Warrior I have, and I'd like to make her one of my "regular-use" planes to tool around in.

 

Thanks,

 

aputech

FSIUPC has an aileron trim set in its Joystick Calibration section. You might give that a try.

I recently rediscovered a freeware Piper Cherokee Warrior II I'd installed in FSX about a year ago, and decided to fly it today from KPSP to KSLC. I was very happy with its performance because it "felt" very similar to one of the Piper Cherokee Warriors I trained in, and it behaved accordingly. Unfortunately it has a 2 degree bank to the right that I can't correct. Ground taxiing is a bit bothersome because the airplane insists on veering to starboard with even a little throttle power. Opposite rudder counters the yaw, but not the roll/bank.When AP is activated she flies straight ahead and on heading, but not "true"; she still has that 2 degree bank, and if I look out of my port side I can see that the port aileron is slightly deflected downward, and my attitude indicator shows the same 2 degree bank. Is there a setting in its aircraft.cfg I can tweak to correct this? The airplane's file name is Warrior_II.zip, and I believe it's available on several good websites. Some advice on this would be appreciated; she flies better than the payware Cherokee Warrior I have, and I'd like to make her one of my "regular-use" planes to tool around in.

 

Thanks,

 

aputech

 

You should have read the readme.txt all the way through :)

 

 

About the P-effect:

 

I placed the engine slightly to the right of the midline in the flight dynamics to simulate the P-factor:

 

In the real aircraft the propeller turns clockwise as seen from the pilot's seat.

Therefore, the propwash will take a spiraling trajectory along the fuselage. It will collide with the vertical fin, pushing it to the right,

thus causing the aircraft to turn left.

Moreover, a propeller blade that goes down will generate more thrust than one going upward because the former will have a higher speed

with respect to the air and will have a larger angle-of-attack, caused by the propeller axis being more pitch-up than the aircraft path.

This, too, adds to a tendency to turn left.

 

And...

 

 

Still, if you don't like the P-factor, open aircraft.cfg, find

 

[GeneralEngineData]

engine_type= 0

Engine.0= 4.000, 0.800, 0.000

fuel_flow_scalar= 1.000

min_throttle_limit=0.000000

 

and change it to read

 

[GeneralEngineData]

engine_type= 0

Engine.0= 4.000, 0.000, 0.000

fuel_flow_scalar= 1.000

min_throttle_limit=0.000000

 

Edit:

 

Looks like setting the 'x' offset to 0 really messes up the rudder response, also the numbers in the readme don't match the actual values in the .cfg, I found these settings pretty much get rid of p-factor, there will be some still there but it's minor as not to be noticed.

 

 

[GeneralEngineData]

engine_type= 0

Engine.0= 7.000, 0.001, 0.000

fuel_flow_scalar= 0.800

min_throttle_limit=0.000000

 

Alternatively, if you'd like a level of p-factor that is consistant with other aircraft in FSX, this seems to work well:

 

 

 

[GeneralEngineData]

engine_type= 0

Engine.0= 7.000, 0.100, 0.000

fuel_flow_scalar= 0.800

min_throttle_limit=0.000000

NikkiA, thank you so much for pointing out the info in the readme file. Problem is solved. I'm ADHD, and sometimes, as in this case, it can be rather annoying; had I exercised control over my excitement (and the resulting impatience) in finding a near-perfect FSX model of a Cherokee Warrior II, I would've read through the entire readme, made the necessary changes, and been as happy as a lark. But I was ecstatic! Couldn't wait! Again, thank you so much. The interesting thing is, when I fly real-world, distraction and impatience are all but non-existent; I live in the moment, and relish every second of it--even on hot days, waiting in the queue, passenger door open, a silly smile on my sweating mug.

The P-factor in Rien Cornelissen's Warrior II model was just slightly over what I was used to real-world, but not by much. He really did an exemplary job on that Piper. It's the only aircraft in FSX that I tried out and knew instantly, yeah, this is right. This is just right. No other airplane in my FSX does that for me, and I have all of the airplanes in FSX that I'm checked out in, in real life. It's ironic that my best-modeled airplane is freeware. It's not as pretty as the others, but she sure flies the way she's supposed to.

NikkiA, you've reminded me of the value of patience, and I appreciate it. You have no idea how happy I am, being able to tool around my old "stomping grounds" in a little Cherokee Warrior II that handles like the real thing, using my first pilot logbook as a destination guide. Today it'll be Salt Lake City Int'l to Great Falls.

 

Thank you, NikkiA,

 

aputech