P3D v4 Stock Beech Kingair FM's; Pull Left on Takeoff?

[lionheart]

Hey all,

The Beech King Air FM pulls left on takeoff's. I tried to find a setting that sets prop rotations. The King Air has both fans spinning in the same direction. On the plane I am making, they are counter-rotating. When she takes to flight, she should be balanced, straight ahead. Is there a way to do this?

For now, I put in these to compensate for some realism, but wondering how you set the prop rotations. I think I recall in FS2004 they were up in the config airplane blocks, top of the page.
p_factor_on_yaw = 0.0
torque_on_roll = 0.0

 

[robystar]

Once the props are running, push on E + 1 and 2 (keeping E down while adding 1 and 2). Does that help?

 

[mzeeshannnaseem]

Are you fsx modelist in blender

 

[PhantomTweak]

I don't know if it works , it seems like it works for me in FSX:SE, but I found a little detail you can add to the [propeller] section of the aircraft.cfg.
It reads: rotation=-1,1 //Engine 1,2,3,... Rotation direction. 1 = CW, -1 = CCW.

Does this help at all?
Pat☺

 

[lionheart]

Are you fsx modelist in blender

Hello mzeeshannnaseem,

I am not. I work in 3ds Max, not Blender. I wish I did, its a brilliant program.

I answered you in your private message.


Bill

 

[lionheart]

I don't know if it works , it seems like it works for me in FSX:SE, but I found a little detail you can add to the [propeller] section of the aircraft.cfg.
It reads: rotation=-1,1 //Engine 1,2,3,... Rotation direction. 1 = CW, -1 = CCW.

Does this help at all?
Pat☺

I think thats exactly what I was looking for. This will tell the sim how to work the prop torque values.

A thousand thanks, Pat.

Bill

 

[mzeeshannnaseem]

is there some one a blender modelist master

 

[lionheart]

is there some one a blender modelist master

Why dont your post this question in the Model room? That is where the model makers hang out and where questions on mesh model making takes place.

 

[mzeeshannnaseem]

iam new one here and don't know where to go i think so you are the member its your duty to guide me

 

[WarpD]

iam new one here and don't know where to go i think so you are the member its your duty to guide me

Sorry, but we do expect people to be capable of finding things that are findable... like the Blender sub forum: https://www.fsdeveloper.com/forum/forums/blender.136/

 

[Roy Holmes]

The P3D v4 SDK does not have any reference to rotation in the aircraft.cfg [propeller] section.
In the air file there is a section for yaw due to propwash for the airplane as a whole. My KingAir air file has that as =0. If yours has a value other than zero, make it =0.
You can find that section in 1101 Yaw Cn dt Yaw Moment - Thrust
Roy

 

[lionheart]

Awesome... Thanks Roy.

 

[lionheart]

Yep, mine is zero also. odd...

 

[bstolle]

Make sure the passenger & baggage load, fuel quantity (and fuel tank and engine location) is 100% symetrical and that there's no wind. Just tested the default King Air with both entries at 0 and she never left the centerline on takeoff.

Additionally you can set gyro_precession_on_yaw and gyro_precession_on_pitch to zero, but this doesn't affect the T/O run.

That said, using rotation -1,1 with p-factor and torque at default values works equally well. E.g. I used rotation -1 on a DHC-1 FDE since this affects the FDE different (and more realistic AFAIR) than using negative torque and p-factor values.
Animation must be adapted in this case as well.

 

[Roy Holmes]

Berndt
Where did you find the rotation specified as -1 or 1. I can find no reference to engine rotation direction in the P3Dv4 SDK.
I may have missed it and I'm very curious
Roy

 

[bstolle]

I didn't even find it in the official MS FSX aircraft.cfg description. The interesting thing is that MS wrote for FSX: The simulation correctly handles counter-clockwise rotating propellers. The default values are 1.0.
Luckily this entry (still) works with FSX and P3D.

I don't use Airwrench but interestingly the second to last update says: 1.01.97 - Added prop rotation