G25 just doesnt feel good in LFS

[Platinum pete]

As title says-I have tried many settings with the wheel but it just isnt as good as momo was in terms of direct feel on ffb. i think its because of the non existant feel on the deadzone area due to two motors etc etc blah blah technical noncence. fact is if i pay more for a wheel i expect it to be at least as good. and i dont think it is- let me know if your experiences are different and share your ideas on how to make mine better

tarrah

PP

[Woz]

hmmm can't figure what you are talking about. The G25 is the best, most subtle FF wheel I have used to date and it works a charm with LFS. I have used and owned the following: MS FF, Saitek R440, Logitec DFP and G25.

Basic settings are the same as for other FF wheels in LFS.

In the CP set overall forces to 100% and everything else as 0. Now set the wheel to 720deg.

In LFS try a FF of about 40% as a starter and move up/down from there. Also set your wheel turn comp to 1.0.

LFS will now scale you wheel turn to match that of the car.

[GabbO]

I'll take it then, you dont have to mess anymore with it.
You can take my red momo (or better the chinese 20€ wheel from my brother :) )

[S14 DRIFT]

I agree with WoZ, its a great piece of kit.
i find my times with G25 are much improved over that with DFP.

Force is LFS is about 120% and in the profiler thingy its 100

[Jakg]

f'ing love mine, 10x better than my old spikey Momo!

[Gabkicks]

are you using the logitech profiler settings in my sig?

[JJ72]

I've owned Logitech's GT force, MOMO racing, MOMO force, GTFP and now the G25, the MOMO racing is about the bottom of the pack, because it's heavy and the feeling is "muffled". I don't know what do you mean by non existent feeling of deadzone (no play??), but you can adjust deadzone setting in LFS's option. Maybe you prefer some deadzone like in real cars rather then it being too sensitive that's the problem?

[Boris Lozac]

Are you serious, i tried it for 10 minutes at friends house, and when i went home, i though it says "Genious" on my Momo... ;)

[Cue-Ball]

I also agree with Woz. The G25 is far and away better than any other wheel I've ever tried. It's relatively quiet, has great feedback, is well sized, etc. It's the only wheel I've tried that I can REALLY feel the bumps on the curbing.

I set the Wingman software and LFS both to 720* and every single car behaves just as it should.

[unseen]

With something as intimate and personal as a wheel for controlling these sort of games compared to a semi-digital controller like a mouse, it`s possible Plat just can`t see past his old momo.

Personally I love this wheel, It`s solid, smooth, and I can tell where I`m heading on track with it without even looking at the screen. I can make my car do all sorts of stupid manouvres with a flick of the wheel (please note that doesn`t make me a good online driver whatsoever) but I feel as much in control of my car as I could ask for from a PC controller.

pete, post your settings for your wheel here, your windows (or if you use it, logitech profiler) settings, and your in-game lfs settings, and we`ll all have a look and see if there`s anything obviously "wrong" with them. Most people here and elsewhere have posted the obvious flaws in the G25, but actual control feel doesn`t seem to be one of the main complaints at all.

Cheers.

[Jakg]

well, you can buy my old Momo off me if you want it! :D

i LOVE my G25, i wish i'd got it rather than my GFX card now!

[cvearl]

I have the MOMO racing. It's a great wheel but I personally have nothing to compare it to myself. G25 I played a little bit at a store in some stupid arcade game. It felt solid as well.

Wish I had more to offer than this...

Don't get angry at the guy. Perhaps he prefers the MOMO. But really should double check his stuff though in the FF setting department. ;)

C.

[Goop]

on my third wheel: thrustmaster ferrari, momo black, and now the g25. G25 is by far the best and smoothest, imho.

Other than what has been suggested here; it seemed logi had some initial problems with quality and consitency in the product. For me, the improvements over my other wheels are so massive, I wonder if maybe you have a dodgy wheel :shrug:

LFS force strength @ 30, cp rotation is 270; other setting identical to Woz's.

[Flycantbird]

To each his own, but I suspect something is wrong in your settings, driver, etc.

Have you tried working with someone else using one ?
I'd help you troubleshoot through it, if I saw you online.

Have you gone from 270 degrees of rotation to 900 degrees ?
Maybe you need to set it to what you were used to before.

[bentfocus]

Hey guys,
If the G25 is like other MoMO wheels, the FF needs to be reversed...maybe this guy did not do that!
It surely feels like crud on a sponge the other way!

[Gabkicks]

i think you mistook this for rfactor:)

[richo]

I,m very tempted to get a G25, just cant bring myself to a new wheel when my Momo is still working great.

mmmmm g25...

[stevewhite]

i got the g25 and i must say its not really worth the money. Not to say it isnt the best thing to happen to LFS sence s2, but it is very expensive. When i think of the other things i could have gotten,i don't know. I do love my g25, i would have rathered have some fake leather ect insted of having to pay over 300 bucks cnd for it. Oh well, better then my old "wheel". (logitech mx 1000)

[N I K I]

jatajatajata.....

be happy that you have a wheel. Oh God you have best wheel out there and you are not happy, maybe you should kill yourself...

[Davo]

maybe you should

[zeugnimod]

maybe you should kill yourself...

Idiot. :pillepall

[J.B.]

One tweak I like a lot (with DFP) is to set the force in the logitech driver to 110% or 115% instead of 100%. This makes the forces more linear around the center.

From the guy who wrote the logitech driver:
there is a certain degree of non-linearity built into the firmware in order to improve performance; if left fully linear, the strength of the motor would cause a lot of oscillation in many games that use a closed-loop approach (read input, calculate physics, output forces), due to the loop times involved.

Going over 100% overrides this non-linearity.

http://www.wingmanteam.com/discus/messages/4/3657.html?MondayDecember520051201pm

[AndroidXP]

But going over 100% makes the wheel go absolutely nuts for me, like there are forces generated whose existence is a mystery. :shrug:

E: Truth to be told, setting it to 101% seems quite okay. The feel is vastly different - much stronger around the centre point, I recall even feeling plain road a bit on a quick test run now - but the forces don't seem exaggerated either. I guess if you put it to 150% strength the it makes even small forces max out, removing a lot of finesse and introducing a lot of weirdness.

In conclusion, everyone who has it at 100% now, give 101% a try. I'd recommend it together with 40% ingame FF. Oscillation if you let go of the wheel might be more of a problem (who lets go of the wheel on a straight?), but the added detail around the centre seems worth it :thumb:

[Platinum pete]

OK I'll tell you what i can about the setting at the moment.

I installed the drivers that came with the wheel but dont use the profiler.

I have settings in windows set to 100% overall effects. 0% for spring and damper and center spring turned off. the rotation is set to 270 for comparison with the momo.

nothing has been changed in LFS except for mappings but it just doesnt feel right somehow.

Dont get me wrong the wheel is good- it feels heaps better in fractor- it just doesnt seem to be to my liking in LFS- perhaps i just need to get used to the new feel??

[Greboth]

f'ing love mine, 10x better than the G25

well, you can by my old Momo off me if you want it! :D

i LOVE my G25, i wish i'd got it rather than my GFX card now!


Will you make your mind up jakg :razz:

[Alkanphel]

Maybe he was sarcastic on the 2nd post? :D

[R3DMAN]

Will you make your mind up jakg :razz:


he meant MOMO.. lol

[Jakg]

oops... Edited!

[Bob Smith]

J.B. / AndroidXP - ah, thanks for the tip, will give that a try. Silly Logitech driver writing people.

[Meanie]

I've got a black momo and don't have a complain about it, but if it can be configured better, i'm all for it!!

I use it like this:

logitech profiler -
100% overall

100% "first one"*

100% "second one"*

centering spring turned on (i guess it's a "check box" , right?)

pedals axis separated, of course...


In game i use 100% FFB and 0.30 Wheel Compensation

So... what should i do to make it better?
101% overall (or does it work only with DFP?)

cut to zero all the others "effects" on the logitech driver?
uncheck the "centering" box?

1.0 wheel compensation would be better? i'm using it at a value which was suggested to me by a friend but i do not know what it does mean etc

Any help would be really appreciated. :D



*i don't have it installed right now and i don't remember the terms, i'm sorry but anyway it's all on 100%.
could anyone *explain* to me what those "terms" means? my english isn't exactly stellar... thanks a lot

[lancergsr]

there will always be a couple of people that will have negative comments towards the g25, but if u look at a aspect ratio of people who like the wheel you will soon see clearly that it is worth every penny

when i first installed my g25 i had loads of problems setting it up correctly and took me a few hours to get it right now its a gem :smileypul

[AndroidXP]

help
Set it up like this: http://www.lfsforum.net/attachment.php?attachmentid=20371&d=1165055529

In LFS I'd suggest around 40% FF strength, but that's up to you. As we've just found out in this thread, you can also try to set it to 101% in the Logitech Profiler (instead of 100% like shown in the screenshot), as it apparently removes some driver induced force damping. :)

[Woz]

OK I'll tell you what i can about the setting at the moment.

I installed the drivers that came with the wheel but dont use the profiler.

I have settings in windows set to 100% overall effects. 0% for spring and damper and center spring turned off. the rotation is set to 270 for comparison with the momo.

nothing has been changed in LFS except for mappings but it just doesnt feel right somehow.

Dont get me wrong the wheel is good- it feels heaps better in fractor- it just doesnt seem to be to my liking in LFS- perhaps i just need to get used to the new feel??

The forces will feel different to your momo as the wheel is different. In the same way in that if you change the speakers/amp or cd player in a good hifi it changes the sound. Neither is right/wrong just different.

Set the wheel to 720deg and wheel comp to 1. This is where the G25 comes into its own and is what the wheel is really about.

[Meanie]

Set it up like this: http://www.lfsforum.net/attachment.php?attachmentid=20371&d=1165055529

In LFS I'd suggest around 40% FF strength, but that's up to you. As we've just found out in this thread, you can also try to set it to 101% in the Logitech Profiler (instead of 100% like shown in the screenshot), as it apparently removes some driver induced force damping. :)

Thanks, will do.
What about LFS wheel compensation?

[AndroidXP]

Well, personally I'm using 540° rotation in the Logitech Profiler, and full wheel turn compensation (1.00) ingame. Seems to work quite well for me :)

[Cue-Ball]

Thanks, will do.
What about LFS wheel compensation?If you set it to 720* then it will be correctly setup for each car in the game (the car with the largest lock-to-lock is 720*). At this setting wheel compensation doesn't matter because every in-car wheel will match exactly to your wheel.

[bbman]

That's not true (at least for me)... I've set it to 720° and 0 compensation and it would turn 720° in every car! As I set it to 1, it turned the exact degrees the specific car had and nothing more...

[Execution Style]

I don't know about everyone else here but I find the wheel turn compensation is an option for people who don't have a proper controller at all.

When I raced with a sidewinder joystick and only had 90 degrees of motion, wheel turn compensation helped a lot. Even if I tried to steer incorrectly, the game would keep the steering wheel at an angle that made sense for the corner I was in, because if my real input went into the game, I would lose control.

With wheel turn compensation on, I feel like there is an ai deciding where the wheel should be, and my input is factored against that pre-determined angle.

With wheel turn comp at 0, where I steer is where it goes. :tilt:


Also, just as reinforcement after reading that someone has their windows settings at something other than 0% for damping and spring effect.. don't do that! LFS just does not expect that kind of interference from the operating system!


to OP - try using with the profiler?

[AndroidXP]

Wheel turn compensation just makes the steering non-linear if your current input device has less degrees of rotation available/set than the car you're driving at the moment. IF wheel turn compensation comes into effect, it gives your more precision around the centre of steering and less precision at extreme steering angles.

If your controller rotation matches that of the car, wtc has no effect at all.

If the car has less rotation than your controller, any wtc > 0.01 is the same (ingame wheel will stop before you reach your devices rotation), if wtc is 0 then the ingame wheel will rotate slower so it stops at the same time your device reaches maximum rotation.

[Davo]

I've noticed the higher the degrees of ratotion used, the higher the force setting in lfs is necessary. e.g 20% feels totally different at 270 and 720. Lower rotation is easier to countersteer and with wheel turn comp on 1.0 the centre is still usable because it has the extra precision needed.

[Rooble]

I dont have a G25 but I do have a DFP and I never use any sort of FF, I tried it and it felt like I was driving a bus with no power steering.

How can people react and counter-steer so fast if it feels like you're turning a boat? All I want is rumble over the kerb and complete free play, this isnt very realistic buts its how id like it.

[Davo]

I used to drive with no FF, but it just felt too weird and loose. In the RWD cars you also lack feeling the rear go. I found I have to adjust the force seperately for each car though, no one value is right for all cars.

[Bob Smith]

I dont have a G25 but I do have a DFP and I never use any sort of FF, I tried it and it felt like I was driving a bus with no power steering.

Didn't think to perhaps turn the FFB down a bit? 100% is too much for most wheels.

[Ramses]

I've noticed the higher the degrees of ratotion used, the higher the force setting in lfs is necessary. e.g 20% feels totally different at 270 and 720. Lower rotation is easier to countersteer and with wheel turn comp on 1.0 the centre is still usable because it has the extra precision needed.

From what I understand this has to do with the maximum rotation speed of these wheels. When you use 200 degrees the wheel has to travel less degrees to reach a new FF centre position then with 900. Because the motor can only run as fast as his specs will let him it will tend to lag when you quickly move the wheel with a large rotations set. At 200 it can easily keep up.

I think in general people have different priorities. When you talk about reaction speed no wheel ever beat my first FF wheel: the logitech wingman FF with cable driven FF. It would flick from one extreme to the other at a speed that made you think twice of sticking you hand in there.

After it died I got myself a Force RS but I never got the feedback I had with the Logitech. In the end I just noticed it reacted too slow. It was smoother but also more vague. Never got the hang of it really. So I went back to the Wingman FF's but by that time they got geardriven and acted the same as my Act Labs. :(

These new large rotation wheels suffer even more from comparetively slow motors so I guess the G25, with its higher speed is the way to go. But they needs different settings.

I keep all rotation settings like they are supposed to be in LFS because that gives me the best weighted FF. When I set a GTR to 360 degrees it just doesn't feel right.

[Rooble]

Didn't think to perhaps turn the FFB down a bit? 100% is too much for most wheels.


Yes well believe it or not I have actually gone through the whole force scale to see if any of them felt ok. :really:

In a nut shell the FF to me doesnt feel real at all, its either too stiff or too slow and I never have this problem within a real car.

Perhaps its all I can expect from a £50 wheel!

[LFSn00b]

Didn't think to perhaps turn the FFB down a bit? 100% is too much for most wheels.
Not for my wheel. I use 200% :)

[zeugnimod]

Are your arms still attached to the rest of your body? :D

[LFSn00b]

Yes, perfectly, and i seem to have more muscle ;)

[Hurts2bStock]

I also have it at 200% and aways wish it was stronger, however I have the crappy driving force wheel...lol

[Meanie]

Set it up like this: http://www.lfsforum.net/attachment.php?attachmentid=20371&d=1165055529

In LFS I'd suggest around 40% FF strength, but that's up to you. As we've just found out in this thread, you can also try to set it to 101% in the Logitech Profiler (instead of 100% like shown in the screenshot), as it apparently removes some driver induced force damping. :)


Jesus, man...

I've changed it today and went for a spin.
Turns out that now i'm regularly shaving off .1-.3 of my laps.
I didn't made any PBs yet but my "ordinary" lap is now from .1 to .3 faster on average. Consistently faster.

That's pretty cool. :thumb:

[Woz]

Jesus, man...

I've changed it today and went for a spin.
Turns out that now i'm regularly shaving off .1-.3 of my laps.
I didn't made any PBs yet but my "ordinary" lap is now from .1 to .3 faster on average. Consistently faster.

That's pretty cool. :thumb:

The more you drive the more you will get used to the wheel and the faster you will get.

The G25 can be very subtle with its FF and gives you so much information when you learn what it is telling you. There is a setting in your ini file that you should check.

Its called forcesteps/ffsteps or something like that. If its 128 bump it to 255 as this gives more detailed FF.

[d3mon]

well, the only main thing I have with the G25 is that I find it hard to downshift/tip-heel, the gas pedal is somehow not positioned right to the brake, at least that's what I'm experiencing, people with smaller feet maybe have different experiences :)

[Cue-Ball]

well, the only main thing I have with the G25 is that I find it hard to downshift/tip-heel, the gas pedal is somehow not positioned right to the brake, at least that's what I'm experiencing, people with smaller feet maybe have different experiences :)
I have found the same problem with the G25 pedals. They feel pretty good, but they are positioned completely wrong. I'm planning to mod my pedals based on the pedal layout of a 911 RS. Once that's done I expect it to make a world of difference.

[f@zer]

hmm my settings are:
-rotation 720 (in lfs also 720 degrees, compensation 1.0, ff 100)
-overall FF 70%
-spring effect 0%
-damper effect 0%
-centering spring 70%

i tried turning off centering and in my opinion its for agressive drivers :P
most of time i'm drifting and centering helped me to be smooth, everything is under my control. when centering is off countersteering is more agressive...
maybe it's caused by the fact that i'm used to "centering on" setting...
i'm driving on g25 :thumb::thumb::thumb:
sorry for my english if there are any mistakes- correct me plz ;)

[AndroidXP]

Centering alters every force LFS generates in a totally nonsensical way. If you value a realistic force feedback then the G25 must be set up with all additional driver induced effects turned off.

However, if you like it better with centering spring enabled, all power to you. :thumb:

[f@zer]

after checking few setups - decided to stay 101% overall FF and 101%centering spring - when centering and overal FF have the same value
the effect is good for me.. when centering and overal FF have'nt got the same value something is wrong :P
ps sorry for my english :pillepall

[PITzamann]

no problems here. :shrug: :thumb:

[Linsen]

Hi there.

I just picked up my DFP today :) and after a few laps it seems I'm already getting the hang of it (at least in the XRG which I'm driving mostly atm). I'm currently using 540° of rotation and it doesn't seem to hard to catch slides that way (at least in the XRG), which was my main fear.

Anyway. What I actually wanted to ask: I also had this problem with lack of FFB around the centre. So I set overall strength to 101% in the cp and it sure helps quite a bit. However, even with FFB set to only 30% within LFS, I think that FFB is a fair amount too strong overall now. It doesn't feel very natural to me. So, if I understand it correctly, the problem with the lack of FFB around the centre lies with the drivers, so there's nothing one can do about it, unless the wingmanteam changes those. Correct?

[harlen]

When you finally get it set up, it feels great. Only criticism is that the Force Feedback is a little over powering, and makes it to hard to drive. But thats no biggie, cos i just turn it off.

[AndroidXP]

Linsen, that's probably because you're used to power steering in a real car. The forces a real wheel can generate are much much higher than what you get out of a DFP or even G25. :)

[Ioannis]

I get the feeling that the G25 has very accurate wheel, (i also own a momo and an old boeder FF) . My only objection is that in lfs it doesn't have much detailed feedback, compared to rFactor that you can feel every little roadbump in Full mode.

[tristancliffe]

Yes, in rFactor it's so detailed you can feel stuff that isn't there, and wouldn't be there in a real car.

[AndroidXP]

So Tristan, have you tried the 101% thingy yet?

[tristancliffe]

Not yet, no spare time. I'm either at work, rehearsing, or tiling/wallpapering (or washing, crapping, eating etc). I long for five minutes to play with the sound editor and try 101% stuff.

[Linsen]

Linsen, that's probably because you're used to power steering in a real car. The forces a real wheel can generate are much much higher than what you get out of a DFP or even G25. :)
But my Audi 80 ('88) doesn't have power steering :tilt:.

Of course, the greater leverage (right term?) of a real wheel will make a big difference, but since we usually only have those kiddy-sized wheels, I'd like to have full precision and a reasonable ffb at the same time.

I reread the thread over at the wingmanteam site and apparently the team is considering adding a linearity slider for the next driver release (whenever that will be :shrug:), which would potentially get rid of the lack of feel around the centre. They won't promise anything, though.

[AndroidXP]

Eeeerm, maybe you overread it, you can get rid of any non-linearity even now by setting the force to 101% (or greater) in the profiler. This linearity slider, if it ever comes, wouldn't help you at all, unless you want a liniear FF at values lower than 101% :scratchch

[Linsen]

This linearity slider, if it ever comes, wouldn't help you at all, unless you want a liniear FF at values lower than 101% :scratchch
That's exactly what I want, if I understand it correctly. I want overall lower ffb but without the deadzone-like feel around the centre. I thought that was what could be achieved with a linearity slider?

[So_VipeR_oS]

this seems to be the right place to ask this....i currently own the Red Momo Force (regarded as one of the best) but im seriously thinking about the G25 for the rotation side of things and updated tech........but some comments in here about the G25 are making me think twice about it.....what do you think i should do, worth the upgrade or stick with the old trusty red momo..

[AndroidXP]

That's exactly what I want, if I understand it correctly. I want overall lower ffb but without the deadzone-like feel around the centre. I thought that was what could be achieved with a linearity slider?
I guess you can achieve the same by simply using 101% in the profiler and a lower FF % in LFS :shrug:

[Shotglass]

Eeeerm, maybe you overread it, you can get rid of any non-linearity even now by setting the force to 101% (or greater) in the profiler. This linearity slider, if it ever comes, wouldn't help you at all, unless you want a liniear FF at values lower than 101% :scratchch

the way i understand those post from the logi dev is that every wheel will need a different setting on the slider to get full linearity ... if there was a slider that actually directly set the linearity it would be a lot easiert to set correctly

[Linsen]

I guess you can achieve the same by simply using 101% in the profiler and a lower FF % in LFS :shrug:
Might be true, but I'm not so sure about it. I was under the impression for example, that having the ffb strength in the cp set to, say, 75% and the setting in LFS to 50 felt different than having it set to 100% in the cp and to 25% in LFS -- at least as far as more subtle effects like rumbling strips etc. are concerned. Again, I'm not absolutely sure about it and it might have just been a misconception. So I'll have to do a little more testing and see how low I can go within LFS and if I will be able to achieve my desired result.

[AndroidXP]

Yes of course, because if you use something lower than 100% the Logitech drivers apply the force damping and make the forces non-linear. Though, I've just read through the wingmanteam thread and it seems that values over 100% do the opposite - they exaggerate the small forces, so values of about 101 - 115% may have a somewhat linear FF and at greater values the FF gets non-linear again, just in the opposite direction.

In conclusion: yes, a linearity slider would really help :)

[axus]

Android, is this applicable for all logi wheels/drivers?

[Bob Smith]

The wingman team should really add a "pure" option into the next update for the drivers.

[AndroidXP]

@axus: From what I've read in this thread linked on the first page (http://www.wingmanteam.com/discus/messages/4/3657.html?MondayDecember520051201pm) it at least affects DFPs too, and seeing that it's caused by the drivers I'd say "yes".

[Linsen]

Yes of course, because if you use something lower than 100% the Logitech drivers apply the force damping and make the forces non-linear. Though, I've just read through the wingmanteam thread and it seems that values over 100% do the opposite - they exaggerate the small forces, so values of about 101 - 115% may have a somewhat linear FF and at greater values the FF gets non-linear again, just in the opposite direction.

In conclusion: yes, a linearity slider would really help :)
:schwitz:Glad we finally sorted this out ;).

@Bob: "pure" in the sense that there's no driver induced damping? Yeah, I suspect I could live with that and don't necessarily need a linearity slider.

[AndroidXP]

By the way, I think I've found out what causes these mystery forces at 125%+.

As you sure know setting it to much higher than 100% has the inverse effect - it exaggerates even very little forces. Well guess what, it's the engine vibration/torque. It's mostly too fast for the wheel to give a proper rattling, but it shows a definite response to revving during standstill - if you watch closely, you can see the chassis move during revving. This tiny torque applied to the car body translates in an even tinier suspension compression and minimal tyre movement. Then Logitech multiplies these tiny forces so they get big enough and cause heavy oscillation if you don't hold the wheel. :doh: :)

[MrPix]

Just got G25 and had real problems with LFS until I read this thread and changed the settings.... all I can say is WOW!!

Now... the real question.... should I get an S1 or S2 Licence.... I played the Demo and was beating the 'Kids' on it... well... as long as they were driving in the same direction as me... as soon as I got in 1st Place they seemed to change to the wrong way and ram me...

So... in summary... would and S1 or S2 be best to get away from the idiots?

[Linsen]

So... in summary... would and S1 or S2 be best to get away from the idiots?
S1 won't as there are only very few servers running it these days (maybe 5 or 6). But S2 would in fact be the best* way to get away from the idiots. So, I'd say: Get it :).


*) It should be noted that there are "better" ways of getting away from the wreckers. But those include not playing LFS ;).

[Shotglass]

Yes of course, because if you use something lower than 100% the Logitech drivers apply the force damping and make the forces non-linear. Though, I've just read through the wingmanteam thread and it seems that values over 100% do the opposite - they exaggerate the small forces, so values of about 101 - 115% may have a somewhat linear FF and at greater values the FF gets non-linear again, just in the opposite direction.

In conclusion: yes, a linearity slider would really help :)

from my understanding 100% has a gamma value <1 with maximum force anything below 100 uses the same gamma value but with the whole curve schaled down and anything above 100 increase the gamma value