Originally Posted by tarnsman
GPL still beats rFactor.
When I play GPL 69 mod (or any version for that matter) with my G25 I feel like I am driving something that weighs 500kg sitting on springs and hard tires.
When I play the rFactor 71 mod I do get better tire feel, but I dont get any sense of mass from the car and the springs do not feel real at all.
GPL does mass transfer and inertia better than anything I have played since. rFactor does not have that grip/roll/release effect you get in a real car and GPL has that. Power and Glory for GTR2 has it, but god only knows how long it took them to do get it right. And the cars are still a bit too light and quick even in PnG.
rfactor is fine for modern super stiff aero cars of the modern era. When they try earlier stuff the cars are generally too light, too stiff and dont have enough inertia and mass to feel realistic.
Interesting. The inertia bug notwithstanding, the absence of the feel you mention has nothing to do with the physics engine per se.
I have seen that observation thrown at rFactor, but people seem to to forget one thing: you can have über-sophisticated physics like we have in NetKar Pro, but if the values (for the car and tire parameters, that is) you plug in are not correct, the car will not behave properly.
For some reason, people neglect to integrate this notion into their cheerful criticism of isiMotor2 or rFactor.
Do the (proper) calculations for the cars and you'll end up with higher values for inertias than (for some reason) modders use. This alone changes everything.
Then, do the (proper) calculations for wheel/axle/brakes inertias, and you'll end up with higher values for its inertias. Behaviour further modified.
Apply correct spring rates and you'll see proper roll and suspension movement in general.
Finally, rework tires fully.To that effect, people should revisit the RSC threads by Bristow et al to understand the possibilities available for isiMotor2 tires.
Only then should people comment on rFactor physics not having the same feel as this or that sim.
Imagine you're rich (maybe you are, who knows). You hear all kinds of amazing things about the Lambo Aventador. You buy one. You soon discover it doesn't accelerate 0-100 kph in under 5s no matter how hard you try. And then you realize it is not stable on any corner. Would you think, "ah, it sucks, it is not as good as the 458 Italia", or would you rather take it back to the seller and report the problems?
Accepting a mod's physics as the standard for rFactor physics is absurd. Unless we're talking about something produced by someone like Niels...
Someone mentioned iRacing above. Yes, well, iRacing is the evolved son of GPL, and it shows. Badly.