Extreme lateral accelerations during low rpm or slow taxi

smitty97

Hi! love the new Professional planes! But I have 1 nitpick:

I have a full motion system, so it lets me find things like this that go unnoticed by most people

When taxiing the Bonanza slowly, i am getting some very harsh side to side motion. At first i thought it was related to taxi speeds, and it seemed to only be there below 6.4m/s. On these telemetry charts, the left side is the asobo G36 for comparison and the right is your A36. in both i throttle up a little to about 8m/s, coast a bit, then brake to stop. The values come from BODY_ACCELERATION simvars.

bonanza accel.png

The lateral accelerations are ~10x other planes. but it does suddenly smooth out when going faster.

But when checking the Baron, it acts similar, but thought it might be tied to low-rpm engine vibration, as it goes away with throttle, with parking brake set:

I first felt this motion in the turbine bonanza, whose rpm is obviously much different.

So i'm not really sure of the cause of it. But it makes slow taxiing very difficult!

Hope you can tame these crazy accelerations out!

Black Square

Thank you for providing this example for when I tell people that they would not believe all the ways that people use my aircraft

Hmm... I just double checked, and I'm not applying any vibrations based on engine RPM to these aircraft. There is, however, a method to do this in the simulator itself. I recall turning it up in the past, but I'm not sure it would account for a 10x change. You could try setting low_rpm_shake_scalar in all the engines.cfg files to zero, and see if that makes a difference. If not, then we might have to do some more experimentation with landing gear. That's my next guess, at least.

smitty97

low_rpm_shake_scalar = 0 didnt do anything.

I then tried these in the flight model:
min_castering_angle = 0
ground_new_contact_model_up_to_speed_lateral = 0
ground_new_contact_model_up_to_speed_lateral_steering = 0 (added)
enable_high_accuracy_integration = 0

_lateral seemed to help the most.. now the high accel's go away with even very slow movements, but when you brake to a stop there's a jolt and continued hard lateral accelerations.
also shutting the engine off while stopped brings accel to 0