A year and a half ago I started analyzing GPS_LatAcc values to see whether adjustments being made to the kart´s setup were resulting in increased or decreased lateral g-forces. This helped me to confirm the perception of an increase or decrease in grip, mainly in the rear end.
But I’ve always noticed that the GPS_LatAcc values in the right turns on a clockwise circuit are always greater than the GPS_LatAcc values in the left turns and that always intrigued me.
As the track where I run is sometimes open for counterclockwise practices, I decided to compare the values of GPS_LatAcc and I noticed that even in the counterclockwise direction, the values of GPS_LatAcc are greater in turns to the right than in turns to the left. However, in the counterclockwise direction, the difference between the values for the right and for the left is smaller.
For example, in the clockwise, the average of GPS_LatAcc in the turns to the right is 2.1g while in the turns to the left the average is 1.8g. In the other hand, in the counterclockwise direction, the average of the values of GPS_LatAcc to the right drops to 2.0g and the average in the curves to the left rises to 1.9g.
I thought that the difference between the average of turns to the right and to the left was due to the temperature of the tires, which are higher in the outer tires, but this was not confirmed in the counterclockwise direction.
Can anyone tell me why this happens? Any relation to the weight distribution as the engine I use is really heavy (30kg)?
Additionally, I would like to ask if you guys use any other data to analyze grip.
I run in the senior category with 4 stroke engines and 183kg (kart + driver).
I think this has more to do with it than anything. Unless the tack is symmetrical your are going to have different approach speeds and cornering speeds depending on multiple factors like straights before the corners, multi-corner complexes and corner types. At NTK lap times ;change dramatically between directions. I would assume that the lateral G’s would be different as well.