This site describes the purpose and content of this workshop. Also it offers the possibility to subscribe for it.


The Workshop 'Magic Numbers' lasts one afternoon and one morning.

The way we work is as follows: a corner is divided into five segments. Each segment has its own attributes and hance its own causes of under-/oversteer, which for a great deal can be avoided by carrying out the right calculations as taught during this workshop:

  • Basics:
    • Designation of all movements a car can make,
    • measurement and calculation of the understeer/oversteer,
    • measurement and calculation of the Stability Index.
  • Tires:
    • How they work
    • Change of Coefficient of friction under load transfer
    •  Introduction to tire modelling with Motec and ChassisSim.
  • Geometry:
    • Roll-Centre:
    • Determination of its position Importance of the position
    • Consequences of lowering the car Steering geometry / Ackermann
  • Load Transfer:
    • Cause of load transfer,
    • Calculation of Roll Moment,
    • Calculation of Roll Resistance and its distribution over both axis.
    • Relation between Roll and load transfer
  • Functioning of the anti-roll bar:
    • Calculation or measurement of its spring rate
  • Springs:
    • Calculation or measurement of the spring rate
  • Damping
    • Calculation of the required damping rate Balancing the car with dampers
  • Aerodynamics
    • Test method and calculation of the CDA (drag)
    • Test method and calculation of the CLA (lift)

After following the seminar you will be able to make the best initial setup, and you wil have gained a deeper insight in the dynamics of your racing car, which helps you achieving the best setting in a shorter period of time!