Thank you very much for this realistic update. I also tried to correct performance output with graphs via automobile-catalogue.com but it was stil fast. After a few couple of laps with your version at my fav test track Brands Hatch GP there are 10 seconds difference than the previous version which means it is slower and realistic for an old british bruiser : ) I hope somebody revise the model, lighting and etc... Can I ask your method of revising performance of unrealistic mods ? I think some of the NFS Tournament Class Classics are too fast and easy to drive I wish to revise their performance and etc...
Thanks a lot
Hi,
Here's how I go about it:
on the first page of the model chosen in automobile-catalogue.com, you can already check a lot of things in content manager concerning the car: the manufacturer, the country of origin, the year of the model, the class (race or street ... or whatever you want), the name of the author, the power, the torque, the weight (empty), the maximum speed, the acceleration, then right click on the weight / power ratio box then "recalculate", this is done automatically by content manager. You can also fill in the boxes just under the photo of your car and the area to the right of this photo. It still remains to possibly modify the "power graph". Click on "folder" at the bottom of the screen, then on "ui" then on "ui_car.json". On the file that opens you will find the values to apply concerning the torque and the power available in the automobile-catalog under the tab "horse power / torque curve" (in red). Save the ui_car.jason file, now the power graph conforms to the car settings. To modify the power of the car, you have to open the file "power.lut" in data folder and calculate according to the torque values of the file "ui_car.json" the values to enter those of "power.lut" in this way:
T (in power.lut) = T (in ui_car.json) X 0.85
0.85 is the power reduction coefficient due to efficiency drops in the transmission. If the car is equipped with a turbo the calculation is a little different, the coefficient is modified as follows:
0.85 / (1 + turbo pressure)
e.g. if the turbo pressure is 1 bar
0.85 / 2 = 0.425
Only the power.lut changes the power of the car according to the formula:
Power = Torque * rpm
power in watts, torque in Newton / meter and rpm 2pi rad / sec.
Don't forget to also modify:
car.ini, (adjusts the weight, i.e. empty weight + 75kg)
ai.ini (the gear change values for the ai)
engine.ini (max rpm, idle rpm, etc ... and important, the turbo pressure
Now the car has the right power, to adjust the maximum speed and acceleration you can modify the parameters of the "aero.ini" file.
Also check the gearbox ratio values from those given in automobile-catalog on the tab "Complete transmission data: gear ratios, final drive, etc. - click the button below: Full Specifications"
Also test the other files in the "data" folder, there is a lot to learn.
But for all parameters to be compliant, there is still a lot to do ...
Finally, don't forget to click the "analyze" button in content manager to check that the car has no errors.
This is a little shortcut of what you can do with automobile-catalog (or zeperf.com even if it is not as complete).
If you need more information ---> pm
Have fun, Mike
Edit 1: i forgot to mention if data folder doesnt exist, only data.acd, in CM press [alt]+j data folder is created, then delete data.acd