I'm garbage at developing cars pls send help

There is actually issue with exporting aero.

You can see here how front gains weight while rear loses weight, that means rear end has lift while front has downforce:


However Automation says there should be only lift and front should have more lift than the rear:



After 130kph vehicle starts to be rather unstable because front end is more loaded while rear gets lighter, effect of aero becomes quite strong.

I would love to have suspension frequencies and damper slow/fast bump and rebound tuning in N/mm, that would make my life easy, but I can do that in jbeam just fine, when ever I have time to play that much!

 

Yeah, Aero is like, impossible to export correctly, we do our best, but because Beam does it so based on the actual mesh it's super hard.

 

Drag and lift coef to 0 for body coltris, then add two coltris for front and two for rear axle, which are set to angle and values you wish to have lift and drag. It is a cheat, but much easier than doing calculations for all coltris and effect would still be mostly the same, at least in theory.

My ufo for example is very simplistic form of aero hack, it has only two coltris that are the propeller, doing that properly would need Nasa to compute everything, but via simplest form it somehow works, not perfectly sure why it works, aero can be bit funny at times.

 

Yeah, we're aware of those options there, as we're working with the BeamNG physics devs, but it's still a damned hard problem to get right it seems!

 

There is something like 3 degrees or more negative camber gain during braking, also aero issues, but after I somewhat poorly tampered aerodynamics to have rear downforce instead of lift and front lift instead of downforce, it kind of behave ok.

I think that it is impossible to get vehicle to handle properly without tampering with aerodynamics. Also I'm not sure about camber gain, double wishbone should be good at keeping camber rather stable at whole motion range, but all those together make vehicle quite challenging to handle.

Suspension settings alone don't fix it, it needs some work on nodes and triangles.

 

Wait, so it's double wishbone gaining camber? The front under compression do you mean I assume?

 

I'm not sure about around 3 degrees that I saw, might be my doing, but certainly from around (0 - 0.5) to (-1 to -1.5) video:


Clone is car file for that.

My tampered version is that other bigger zip, but as I probably did mess bit with nodes anything in that is not much exporters fault anymore, however it drives quite bit nicer than what I could make straight export to drive.

 

I've tweaked it quite a bit. It is now a 1966 ETK J-Series, a mild-mannered German grand tourer whose rear end wants nothing more than to become jelly :|



Is there any way to avoid jellification?

 

Ok, now I know what does the middle graph even mean. That might come in handy.
--- Post updated ---
I decided to scrap that little car and I went for some new design. I chose year 1950 as to limit myself in too powerful cars and made a nice V8 convertible. I have also came up with a nice name for it: "Lift-off oversteer: The Introduction". Also, does anyone know why this engine gains and loses revs so rapidly?
--- Post updated ---
Ok, at least now I know why it oversteers so much when lifted off the throttle. I looked at some stats and noticed that instead of engine braking I have a handbrake deployed because the engine does almost equivalent of it's power in friction. Neat. So yeah, from now on I give the car around 10% throttle to keep it under control while doing heavy braking. Stay on the throttle to stay alive. Ironic. Actually it's a really unique trait that gives this car so much more character. And danger. I like that.

 

Also, it may be valuable to at least consider weight distribution. One reason why BMWs are famous for their great driving dynamics is their good weight distribution. The rear may have been too light, and when coupled with the mediocre aero of the exporter, makes for a really slidey rear end.

Also, add bulkier sway bars if it is rolling around too much. These can massively contribute to grip/dynamics as my IRL experience tells me.

Just follow the tutorial made by the automation devs and you will learn quite a bit of how handling tuning in automation works. Happy building!