What you are looking for is for the forces to feel natural and in phase
with your steering motions. Admittedly, it can be easy to fool yourself
this way. After playing with is some more, I think the best way to test
it is to make a single lane-change type maneuver, as if pulling out to
pass someone, rather than constantly swerving back and forth. The
reason is that even with real cars, if you swerve back and forth at the
wrong frequency you can get out of phase with the chassis frequency, and
then end up swerving wider and wider, much like what happens with the
wrong latency correction. But with a single passing type maneuver the
feeling is immediate and very obvious. In this type of maneuver you
should feel resistance to the initial motion, the force should change
direction as you bring the wheel back the other way to straighten out,
and then should die out very quickly as the car straightens out. With
inadequate latency correction the force will continue in the same
direction after you have already reversed the direction of the wheel,
and will often throw the wheel back the other way. Try it at a medium
speed like maybe 60 to 80 mph, so that you do not have to deal with loss
of traction, which will change what you are feeling. When it is correct
it should feel as natural as changing lanes to pass someone on the
highway. When it is incorrect it feels obviously wrong.
BTW if you also have NASCAR 4 save yourself some trouble and try setting
it there first. Do the same exercise as above, but at Watkins Glen in
Simulation mode with the "<fast>" setup, so that there is some
similarity in the steering ratio. This is quicker because you can
change it from the options menu without even getting out of your test
session. For me at least, the value that worked right in N4 also worked
right in GPL.
> I've been tweaking my core.ini settings for force feedback for my new
> Logitech Momo wheel and I have been having some trouble with latency.
> I understand that the current thinking is not to set latency by
bumping
> kerbs, but to swerve back and forth on a straight and try to get the
> feedback to match. What exactly are you trying to feel in this
> exercise? Should the wheel get light during this? How fast do you
drive
> when you do this test? When I try this going very slowly (around 20
> mph), I can get what I think is okay, but if I step it up to 40 mph
the
> wheel gets completely light and I have absolutely no control. Does
that
> indicate a latency that is too long?
> Any help with this would be appreciated.
> Dave Ewing
> --
> *****************************************************
> David A. Ewing
> *****************************************************
