Automobilista 2 Custom Force Feedback - Overview & Recommendations

Possibly a daft question...

Does ABS 'effect' work in all cars or just cars with ABS?

 

I assume it only works on cars with ABS since it probably engages when ABS engages

 

Yea that would make sense.

I wasnt sure if AMS2 had ABS 'telemetry' or not.

Thats got me thinking, if it has maybe I can add an effect on my motion rig too. Never thought about that before now.

 

My poor man's motion rig is strong enough wheelbase that vibrates the whole rig so I do feel those effects clearly on the pedals too. This is a reason I'm hesitant to get a better, more sturdy rig... might damper it too much and make want some separate haptics on the pedals very least.

not sure does AMS2 telemetry have that or not, but custom ffb does't use telemetry as far as I know, so can't make conclusions of that

 

Reiza, we need more sliders, please!!

The self alignment is purely from rack forces.

It makes a difference, but it tops out at 6% of the total forces... try to reduce the 8 in this line:

Code:

(pseudo_gyro_force (/ (tanh (* 15 pseudo_gyro_force)) 8))

Again, reduce the 3.4 in this line:

Code:

(delta_load_wt (/ (tanh (* (/ (- FL_load FR_load) f_load_avg))) 3.4))

Nothing strange happens, Earth still goes it's journey across the Universe .

I treated kerbs differently in previous versions, now I don't. Just increase macro_details in this line (ofc, you can go above 1.5, no problem):

Code:

(macro_details 1.0)            # bigger suspension details [0-1.5]

Hi Richard! Just default/neutral settings. With custom files we change things here. With baked FFB from sims, those settings can/should be changed to better suit personal preferences.

I'm a very simple man, ABS effect is just an ABS effect.
If you want other tyres effect, mess with scrub_scale, line:

Code:

(scrub_scale 1.0)            # scrub feeling [0-3]

AMS2 outputs ABS to shared memory, but custom FFB files don't use that info (that conveys external applications needs). For instance, SimHub uses it.

Worry not! My Trak Racer TR160 Mk4 also does that!!
(is important to isolate the rig from the ground to let it sing it's song )

 

Can the ABS effect be added to other custom files, if possible and you allowed such a thing how would this be done?

 

Thanks for the explanations! Which rack setting will help adjust the self alignment forces?

 

Sure others can use it too. Just find "ABS effect", it's all there.
It's just a rounded squared sine wave generator that affects output when abs_active variable is true (1). This formulation has used.

Are you talking about straight line or oversteer alignment forces?

 

Ingame 75 0 50 0
wheelbase ffb 35 - 40
drift off
fei 80 - 100

I have a slight disability which affects my muscle exhaustion rate, therefore I use higher effect ratios due to not being able to handle the "standard" amount of force

I want the wheel to have a bit of a rubber band effect to pull itself back to the centre during normal cornering on the limit (def + has this effect), then it does feel less strenuous for me to not actively pull the wheel back to the centre. With my CSL belt base, the wheel hardly realigns itself back to centre?
I guess oversteer if I understand correctly?

PS. I could never go back to def+ after this file. Def+ gives ZERO oversteer feedback

 

@Marnus Zwarts I don't really have an oversteer effect on FullFFB, per si. I do have a relaxation when rears loose grip - the force component related with yaw (sense of lateral force on the car/body) is reduced (even cancelled) as grip goes down.

 

So just to get my head around this correctly, if I would like to put your ABS effect in a different Custom file, I only have to add these lines in the file;

(ABS_freq 0.45) # ABS frequency [0.2-1.0]
(ABS_gain 0.37) # ABS gain [0-1] (0 will disable ABS effect)

#ABS effect
(ABS_tex (tanh (* 10 (oscillator ABS_freq))))
(speed_bias (crossover vel_mag 10 20))
(rack_coarse_lfb (+ rack_coarse_lfb (* abs_active ABS_tex speed_bias ABS_gain)))

If so, is there a certain position in the file they should go?
Doing just that doesn't seem to work for me. Thanks for your time.

 

if you are looking to test it with a momentum rack based file ie Karsten rFuktor.

Then it would need to be tied into a branch of final output.
Quick Look at ….I would try
Adding a new command to simplify it ..
Like
( abs_effect rack_coarse_lfb )

Then adding easy identifiable abs_effect into FX slider controls output line .

so

# Effects blend & scale
#
(effects (+ engine_effect tear_effect scrub_effect flatspots_effect road_effect abs_effect))
(effects (* effects (* 2 (power fx 1.6)) master_effects))

but of course this method would add another scalar via the master fx through fx slider . So may need tuning.

another way to try would be add
rack_coarse_lfb

Into the rack directly
by adding it into final rack all ..
# Final Rack & Effects Blending
#

(rack_big (spring rack_big 10000 1 1)) 200000
(all (+ rack_big road_features effects rack_coarse_lfb))

though this could potentially be violent….
Try any of this at your own risk …

I don’t know what will work best without experimentation, and I’m currently away for holidays and so take the above as just thinking out loud , based of a Quick Look over and struggling to make this fluid on a phone ..

 

Just replace the line:

Code:

(rack_coarse_lfb (+ rack_coarse_lfb (* abs_active ABS_tex speed_bias ABS_gain)))

with

(abs_effect (* abs_active ABS_tex speed_bias ABS_gain))

and add abs_effect to the effects line just like @Kuku Maddog says.
Remember, the file is interpreted sequentially so the abs_effect must be calculated before the effects sum line.
Also, check if none of the variables are used in any other way (that could break the code).

 

So which do I have to have first?

# Effects blend & scale
#
(effects (+ engine_effect tear_effect scrub_effect flatspots_effect road_effect abs_effect))
(effects (* effects (* 2 (power fx 1.6)) master_effects))

or

#ABS effect
#

(ABS_tex (tanh (* 10 (oscillator ABS_freq))))
(speed_bias (crossover vel_mag 10 20))
(abs_effect (* abs_active ABS_tex speed_bias ABS_gain))

And I take it I don't need these two lines either then;

(ABS_freq 0.4) # ABS frequency [0.2-1.0]
(ABS_gain 0.4) # ABS gain [0-1] (0 will disable ABS effect)

This is all foreign to me, but like experimenting. Thanks.

EDIT:: It works. Nice extra touch. Thankyou @Joaquim Pereira

 

So what method did you use, I have tried a few ways on the rack_force file and can't get it working.

 

I added the abs_effect to the effects line, then after that I added the ABS Effect lines. Looks like this;
###########################################################
#
# Effects blend & scale
#

(effects (+ engine_effect tear_effect scrub_effect flatspots_effect road_effect abs_effect))
(effects (* effects (* 2 (power fx 1.6)) master_effects))

###########################################################
#
#ABS effect
#

(ABS_tex (tanh (* 10 (oscillator ABS_freq))))
(speed_bias (crossover vel_mag 10 20))
(abs_effect (* abs_active ABS_tex speed_bias ABS_gain))


###########################################################
Don't know if it was needed or not, but I also put The ABS Gain and Freq lines straight after the (large_offroad_bump_scale line.

 

Hey guys, i have a question. I don´t understand how i can check which profile is good for me. i have an Fanatec CS DD (12NM) Base. With the custom ffb from Joaquim Pereira i have weired effects arount -5° to 5° (in the middle position of the wheel). i like the effects from you´re settings but i don´t know how to change this.

Also i have exact this problem from you´re explanation and don´t know how to change this.

 

The first part I can't help you with, the second part is a graph showing clipping. You can use the car speciific gain to control this. Lower by about 5 each time until that you get no clipping, that is no red in the far right bar showing during normal on track driving.

 

Well, it works, right?
But the correct order is:

1. contants definitions first, (ABS_freq 0.4) and (ABS_gain 0.4) lines
2. abs effects calculations
3. Effects blend & scale

It works because the next FFB calculation will have everything it needs, but there is an one cycle delay (I doubt anyone will notice it tho).

The suggested gain=65 should not need changing, no matter the wheel base you use. It, and a vehicle-specific around 100, should give very little clipping in game's output (what I can call, subjectively, an acceptable clipping amount).
I don't have the opportunity to test many cars, but is not hard to believe the top tier classes can have some ocillations around the center at high speed, bumpy tracks (I already notice LMDh does that at Mulsanne straight). Further refinements to come, if necessary.

 

Great, thank you. I will try it the other way around and see if I can notice any difference. It is quite subtle, as opposed to your file, which is very pronounced. I like very much some aspects of yours over Daniels, but I like some of Daniels over yours. Oh to find the sweet spot, eh?