I thought so. Adjusting the a0 and b0 paramaters
so that the forces don't drop off so dramatically
makes a big difference. Tuning the aligning moment
has a big affect too. How are FF effects related
to the aligning moment, or are they related at all?
With my settings, the car feels as realistic as
any sim out there I've tried. The biggest difference
is the ability to counter steer through turns.
With my tuned Pacejka settings, RACER will counter
steer through an entire turn as well as any Ratbag
sim! :) One other person has tried these new
settings and called it a "massive improvement" :)
If anyone else wants to try it, let me know. It's
just a new car.ini file for the EVO6.
--
Pat Dotson
> On Wed, 26 Dec 2001 01:18:30 -0500, Pat Dotson
> >The graphs for the lat and long forces look out of whack.
> >The '67 Ferrari Pacejka settings are especially heinous!
> >The forces generated by the tires can't possibly fall of
> >by 50%, can they?
> >I never had any complaint with Racer as far as how it
> >handles within the limits of traction. It has always
> >felt like once you pass the limit, you are suddenly on
> >ice. Sort of like GPL on steriods. The Pacejka graphs
> >explain exactly why it felt like that.
> >I spent a few minutes modifying the settings so that the
> >lat and long forces don't drop off as dramatically, and
> >the resulting handling was much more predictable, more
> >as expected.
> >Are the settings for the default cars supposed to be
> >like they are?
> No, they do seem halfly fictional, although they're derived from sets
> in Giancarlo Genta's book 'Motor Vehicle Dynamics - Modeling and
> Simulation'. A Ferrari tire set is used for the Ferrari 312, but it
> does seem to miss some coefficients, and the a0 variable makes the
> curve too sharp.
> Pacejka values are hard to get, but I hope that the editor will allow
> people to tweak it so it is usable. A tutorial must still be made to
> explain what the coefficients do though.
