I do have a question regarding to what game physics uses to transmit ffb to the wheel in the T500 Thrustmaster case. We have in the Driver screen, Gain, Constant, Periodic, Spring and Damper. Do Automobilista uses them all?
I'll try to sum it for you. I don't know exact thrustmaster driver internals but since ffb is somewhat standardised tehnique, we can make some educated guess. Gain, my logicall conclusion is it adjusts the strenght of final force sent to wheel after all effects have been processed (including periodic). Damper and spring is not used with "Pure FFB" (as thats only indeed a fake effect), constant force as i understood is overall multiplier for spring and damper (which aren't changing throughout the wheel travel, they are constant all the time). So only important is "periodic" which is kinda misleading name, suggesting something happens "periodically" whereas this is the true dynamic ffb output.