Channels Report
Shocks
Oil
Oversteer/Understeer
Lateral and Longitudinal G
As mentioned in the May race report, there is a persistent vehicle dynamics challenge in that the car can exhibit nearly 1.2 lateral g in both left and right turns but the car can only consistently exhibit about .8 longitudinal negative g (braking).
This is likely the result of having extremely high front brake bias, which is being used to keep the rear of the car settled under heavy braking. With less front brake bias (more even between front and rear) the rear of the car gets quite unsettled under heavy braking; however, with less front brake bias there is an opportunity for all four brakes to help slow the vehicle versus just the front two brakes.
I did not change brake bias for this event but instead tried to get to threshold braking. The negative g values are better at .9 but still not even close to the 1.2 values hoped for. I believe there is not more adjustment remaining in the balance bar so there may be a need to change out master cylinder size for the front or back or to replace the balance bar with a proportioning valve for greater adjustments.
Brake Pressure
The strange data continued this weekend. The first figure shows the fastest lap of the final race. As seen in front and rear brake pressures, the readings essentially depict a switch…brake on and then brake off. However, the brakes worked as expected and not like a switch. I likely need to replace the sensors.
The data below are from the fastest lap of the first session of the weekend when the sensors appeared to work properly.
