Has anyone decoded ICR2 replay files to where telemetry readings can be
extracted for analysis? It seems to me friction circles are common
enough tools for analyzing how the car/driver combination is working.
Even more telling would be a solid look at slip angles on the tires (I
realize steering angle is not part of the RPY).
I consider such use of the information quite wholesome and perfectly
reasonable, and shouldn't jangle too many nerves at Papyrus.
Mike.
> Has anyone decoded ICR2 replay files to where telemetry readings can be
> extracted for analysis? It seems to me friction circles are common
> enough tools for analyzing how the car/driver combination is working.
> Even more telling would be a solid look at slip angles on the tires (I
> realize steering angle is not part of the RPY).
There is a program around called editrpy by Mike Corrigan that extracts
lap speeds and can even give a detailed lap by lap race report including
driver positions. You can grab a single lap's telemetry into an ASCII
file for processing by other sortware but no graphing was available in
the version I had.
I did some "hacking" on RPY files, with the help of one of Mike's
info files and I almost went after the friction circle analyzer idea but
I got sucked onto something I shouldn't have and had to drop it. It is a
fairly easy concept to do but there is one problem. The indicated speed
will appear to increase wildly as you get closer to the inside of the
turn. This makes some sort of mathematical left/right position
compensation for turns necessary for accurate interpretation of
cornering forces. You need to know the track geometry to do this.
I bet if Mike and/or Jed got on this, we could see such a utility.
I would use it!
BTW, steering angles are included in the replay files. Take a look at
your front wheels in a replay. Steering angles could be monitored very
easily.
Actually, I don't think they mind at all. At least they didn't in the
past.
Dan
