brr, on Jul 31 2009, 03:14 PM, said:

Rewriting the ffb is not technically difficult, the main problem is to figure out a better mathematical model. The current model is probably simplified so that nonlinear calculations can be replaced by a table lookup.

I think one or two corrections (that is: addition) on top of the current calculation of steering wheel forces resulting from car movement would do. One correction for wheel rotation, one for the wheel friction (standing still, no rotation at all). Both effects add resistance to the steering wheel, and I think its a safe bet to assume that they are equal on both front wheels.

Correction for rotation: depending on wheel (mass, diameter) and speed (angular rotation of the wheels). Increasing with all three. I think it is even linear, so I would start out with a product of the three (with correction factors so that the "real" forces coming from the model dont get covered up, at least not at moderate speeds where most of the cornering happens)

Correction for friction: I would assume it as steeply and linearly decreasing with speed increasing. All in all not that important.

Only suggestions, of course, for some modder like you who has the knowledge where to get and set those values.

Grüße

Uwe

PS: Maybe the above is what "damping" is (was) all about?

**Edited by Uwe Herrling, Aug 02 2009 - 10:21 AM.**