Automobilista 2 Custom Force Feedback - Overview & Recommendations

Great work Kuku! I adapted your 4.6 DeltaX values over to my G920 and it works smooth, gives me all the info I need, and it's transparent to the point that I don't really even think about the FFB.

 

Hi @Peter Stefani, I have a G25, got curious about experimenting your adjustments. Would you mind to share your G920 file?

 

I got a g29 and would like to try it too!

 

Latest update for G920
93/10/25/1 (Damper is Damper)
12-26-22
ffb_custom_settings

 

I see , well you have a lot of power in those things .
you might find some cars that are quite stiff and have a bit of downforce that pushes down on the front loading, causing excessive mid-high speed corner bump effects, particularly noticeable on historic tracks with GTE's etc.

One or two things you might like to experiment with is lowering the Bump weight .
(bump_feel_follow_weight 0.0)

and slight softening the tire stiffness.
(tyre_deform_stiff 1.20)

ideal values will vary depending on tastes and wheel..
These are just a couple of things I'm finding helpful as I fine tune my personal preset.

 

your tunes always throw up some really interesting and inspirational effects scales, that delve deeper than i ever think off.
i look forward trying out some to see what happens.

 

It’s all really just what happens if I press this button.
Seeing how it feels, and testing the limits of values, not that different to what you do with set ups.

Also looking down the file and seeing how it flows through various effects to try to decode the complexity for understanding.
I’ve read it so many times it’s almost starting to make sense.

I’ve possibly found some other gains here and there that I’m just discovering.
We have just gone into full lockdown for second time ever so having fun trying to see what else is there.

ultimately it’s for my own benefit, but doesn’t hurt to share.

 

Is there a way to enhance the brake feeling more as where in the weight transfer forward is more explicit?

Code:

# Dynamic adjustment to brake feel based on car weight
#

(brake_weight_scale           (/ 500 (/ (+ corner_FL corner_FR) 9.8)))
(brake_weight_scale           (+ 1 (* brake_feel_follow_weight (- brake_weight_scale 1))))
(brake_feel                   (/ brake_feel brake_weight_scale))

 

I didn't have time to delve deep into what Kuku actually did, but I do know that when I don't think about the FFB, (while driving) that's when it's best. Somehow it's just really balanced and controlled throughout all the ranges and phases of driving. Something with balance and blending.
I found with the DeltaX I was able to lower the FX a bit and still retain the same detail. Previously the FFB Histogram would generally be centered around the middle forces, but now there is more activity spread across the whole spectrum of the histogram, which would seem to indicate that the forces are more evenly balanced and controlled in their own relative force areas. Each car is different too, so it's quite interesting to watch.

 

Well you have hit the nail on the head with the term blending.
The key element was the change in the way centering works.
Previously it was like this, in a sort of predefined fixed value.

(centering 0.52)
(trail_strength_feel 0.13)

(force_scale (* 1.7 (/ 0.22 centering)))

but I always had a penitent for the blended system from older versions.
(trail_scale (- 1 (min 1 (* 3 lfb_slider))))

(centering (blend (- 1 trail_scale) 0.22 0.5))
(force_scale (* 1.7 (/ 0.22 centering)))

But the self alignment was quite variable depending on where you had your lfb slider set.
in 4.6 , the preset trail_strength _feel , seems to work well, so keeping that ( but its adjustable at same time in file and can lessen drag on wheel if lowered ), I found that incorporating the centering value into the blend formula like this , felt more dynamic.

(trail_strength_feel 0.13)

(centering (blend (- 1 trail_strength_feel) 0.52 0.5))
(force_scale (* 1.7 (/ 0.22 centering)))

It seems to self align more like real life. and reacts to velocity and wheel angle etc. so instead of snapping back at the same sort of speed and directly back to center it slows down as center approaches, You can test this by seeing what happens in your own car, its initially fast but then tapers off.
The actual value is up to each individual, I find around 0.42 best for my wheel, and with a slightly lower trail value.

PS:
Also if you like a more heavy wheel but dont want to upset the balance of rack vs effects scales etc at top of file you can increase the force scale in this line.

(force_scale (* 1.7 (/ 0.22 centering)))

and it will strengthen the overall it seems. maybe this is useful for lower torque wheels..

 

V2 Deleted

Found an issue with loss of useful feel with some cars , while others felt perfectly fine.
the variation in tires in Ams2 is tricky.

 

Thanks for taking the time to explain the center blending, makes total sense now.

 

Still there in
Automobilista 2 Custom Force Feedback - Overview & Recommendations

 

Right I think I've cracked it, and the fix was hiding there the whole time.

In terms of odd oversteer feelings and the relax timing feeling out between yaw and oversteer. The fix was hiding in the Desmos graph link in the file.
#relax_os used for over-steer: relax_os

The numbers in the file didn't match to what was in this original calculation ( done along time ago in early development I suspect).
Im not sure when this changed, but once these values put in the file whole thing came together.

(relax_os_line2_start_y 0.0008)
(relax_os_pos 0.00144)
(relax_os_width 0.00300)
(relax_os_coef -0.015)

Then secondly I finally worked out the newer static force reduction system and got it feeling much more like in rFuktor 4.4 which always gave my weak little wheel some smooth steady weight without overdoing it, and not getting that looseness on light load.
Im not at all sure how it will translate to high end wheel, but you will probably need to use more power steering than recent times, which is good because that means the system is working as intended

So anyway here is the Real Delta-X_V2

Edit: V3 with new old oversteer and yaw system

Edit 08/12/21
Files amended and repacked into archive, See Clicky in Signature
Delta - S is my preferred mix and is easiest to adjust

 

I've tried your latest now and still don't really get a good feedback when the front wheels lock or lose grip. I wonder if it is to do with LFB or FX settings. I found a nice setting when I used to used the last NuScorpii settings he made for those two values, but tend to want to have them at 0 (for my DD wheel). Not sure if that is wise any more. LFB seems mostly to make the centre more stiff which I quite like. any suggestions? and thanks anyway for what you have done so far, it is quite incredible.

 

Excellent work with the Delta-X V2 tune, Kuku! The high end file feels very natural and well balanced on my Simucube 2 Sport wheelbase when driving with GTE class cars and Formula V12. Weight of the wheel is spot on, not too heavy and also not too loose.

I made a little bit of fine-tuning with my AMS2 in-game FFB settings. With your Delta-X Tune V2 high end file I'm now using 37 (gain) / 9 (LFB) / 28 (FX) / 7 (damping a.k.a power steering strength).

 

I agree @tUMi it feels incredibly natural, I used the same settings as yours above for my Accuforce. I just had a go in the McLaren F1 GTR and it is beyond words. I had a quick multi class race with GT4s and was so confident I was overtaking them on the outside of Paddock Hill bend, a bend that for most years has terrified me. and just to make sure I did it a good few times. The sense of speed too is so much greater I find in this sim. tbh the McLaren feels too good to be true, but I'm finding now that the astonishing cars like the F1 GTR really does feel astonishing to drive, the performance is just scarily awesome yet incredibly exhilarating.
Please Riza I've waited since last Nov (orig date for release) for old Spa. Pretty please.

 

I get a fairly good lock up feel and can tell which front tyre is locked etc. , so not sure why you dont on DD, but I would have thought you would want some FX rather than 0, as scrub and tear effects are part of that , and may play a part of the overall brake feel...

I feel like there's some adjustment needed to slip effects now.

I believe you can increase this line in the file to induce slip feel earlier
(long_factor 1.16)
Default is actualy 1.0 , so I have already tweaked that up a bit historically, but do feel like Slip timing has possibly been upset by other changes.

It may be a case of the Slip calculation,

(slip_crossover_pos 0.245) #slip effect graph: slip2
(slip_crossover_width 0.50)
(slip_crossover_line1_slope 0.2)
(slip_crossover_line2_start_y 0.15)
(slip_crossover_line2_end_y 1.15)

or understeer relax need revisiting.

(relax_us_line2_start_y 0.0008) #relax_us used for under-steer: relax_us
(relax_us_pos 0.0011)
(relax_us_width 0.00263)
(relax_us_coef -0.01)

but its a little hard to work out, and others on here have a better handle on that stuff than me, but lowering both Pos and Width seem to bring on slip feel earlier.

 

0 FX willl just rob you off effects no matter the type of wheel, i run 23 i think on DD1. FX here is physical effects, not canned artificial ones.