In racing simulations setting the final or last gear’s ratio is not really a simple task, especially if the car has wings, it needs to re-adjust the final ratio when you modify aerodynamic load in the setup.
Victory set automatically the “ideal” ratio taking into account:
· Engine’s Power
· Drag of wings
· Drag of body
· Other minor parameters.
Equation to calculate the aerodynamic max velocity of a car:
Where Vmax is expressed in m/s and power (Pot) in watt.
Dc is the total Drag Coefficient.
Other parameters can influence max Velocity in minor way:
· Slip of the tire (ALWAYS present)
· Tire’s radius decreasing by aero load.
Once found the max aero velocity we need to consider that is almost impossible to reach the max speed in a closed track. Especially if the cars have a low power/drag ratio.
This is why we reduce at 90% of max aero speed to found right final ratio for gears. This approach make the gears a bit lower in the longest straight of the game but usually this is fine for the larger part of tracks.
Victory car’s setup and gears ratio
Gear ratio in Victory considers the whole range of the car’s parameters.
Green gear ratio button: automatic. The system automatically calculates the max speed considering all car’s ratios.
Gear ratio button off: non-automatic. Drivers reducs or increase manually the final ratio using the sliders: