Tyre pressures and temps

Discussion in 'General Discussion' started by ENGLISH_52, Apr 22, 2021.

  1. Sim_Player

    Sim_Player Registered

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    yea the temp spread is pretty useless to setup camber, idk if it is realistic tho. because IRL i see lot of blogs videos etc saying watching temp spread and adjust camber accordingly.
    On cars that have big temp spread are quite pain in the a$$, because i can't determine if camber is too much or too little...i can't be precise with such cars.
     
  2. David O'Reilly

    David O'Reilly Registered

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    Force-India-Di-Resta-thermal-01.jpg
    I think we can safely say that isn't realistic. IRL teams do use the temp spread to assess camber because it shows how much each part of the tyre is working.
    This picture is worth 1000 words.
    The 10 degree rule of thumb comes from the fact that most teams don't get to see the temp spread in real time mid corner but have to measure it on a car that has entered the pit lane by which time the outside has cooled and the inside still heated by contact even in a straight line. Mid corner, a tyre that is working optimally will be heated evenly across its face like in the pic at the top.
     
    Last edited: Aug 26, 2021
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  3. Sim_Player

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    Yep on mid corner it should more or less even, this is exactly what i don't get on some cars.
    For example new bmw m4 heats up outside part of outside rear tyre quite alot mid corner but at the same time you are at quite high negative camber for rears.
    while at front you get "even" temp at quite low negative camber
    here is test i did on skidpad >(left tyres are outside)
    35.jpg
    note that springs and arb were moderately stiff on both axel. you can go full stiff and still get above characteristics.
    same thing happens with porsche gt3R.
     
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  4. vava74

    vava74 Registered

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    lol... Ermin gets a ton of stuff wrong on his videos AND mixes completely different things in a shit salad. Sure, rF2's physics need improvements and tyre temperatures, loss/gain of grip, degradation, interaction with track temp are all things that need to be addressed, but Ermin made a mess out of it.
    All sims have loopholes and issues with the physics. ALL, including ACC which deals with tyres in a very scientific manner, but also in a "sterile", non communicative manner as your loss of gain of performance is not translated in driving feel and a really believable change of car behaviour.
     
    Last edited: Aug 27, 2021
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  5. Sim_Player

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    lets focus on rf2 here, no need to add if sim x have loopholes too etc . this won't help rf2 in any way.
    instead look at what other sims are doing well and suggest developers to add it.
    like how acc simulate roll effects on aerodynamic, pretty fundamental characteristics missing in rf2.
    also how limiting and problematic the frontwing lift height parameter is.
     
    Last edited: Aug 27, 2021
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  6. vava74

    vava74 Registered

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    If we are supposed to focus on rF2, why do you finish by bringing ACC to the fray again? All discussions have to be made with comparison points.
    My view is that rF2 conveys to me, as a driver, much better what the car is doing. And that is what I am interested into.
    I don't care about physics to THAT point if they make no difference on how I feel the car behaving. I don't drive on rF2 to look at spreadsheets trying to understand what is happening to the car. It's my preference to do it by feeling and seeing how the car handles and there rF2 is second to none.
     
  7. Lazza

    Lazza Registered

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    You can't eat your cake and have it still.

    People will compare to other games, albeit often with more than a little assumption ("oh, rF2 doesn't do that, sure, but the physics run so much faster, so..."... uh-huh...), but it's all or nothing. If you don't want comparisons, don't look at what other games do better either ;)

    Roll aero - not exactly been missed has it? Since 2005. It could give improvements if done properly, it's also another chance for mod makers to stuff something up. Which brings us to...
    Front wing height - yeah, it can be problematic, and its flexibility is limited. But as part of an overall simplified aero model, it's holding its own.

    Something I'd personally consider more fundamental, as an example, given that we had the FISI2012 and Marussia early on and now a new Formula car - plus other open wheelers - is brake temp bleeding into wheels and tyres. That actually makes a noticeable difference behind the wheel, and it's not there.
     
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  8. Rui Santos

    Rui Santos Registered

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    Ermin is right when he says that the priority for rF2 should be fixing those annoying problems, i don't know and it's unbeliavable how those issues like track, tire, tire/spread temperatures and aerodynamics can be broken for so long...
     
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  9. Rui Santos

    Rui Santos Registered

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    Definitely the feeling and handling on rF2 are great, no doubt about that, but when setting up a car, we're completely blind... In a sim that has dynamic racing line and tires don't need to be set accordingly with temperature is something that blows my mind...
     
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  10. Sim_Player

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    Because focusing on cons of a simulator will help to improve it, and other sims that does one thing better will help.
    You are missing the point, you can't gain anything by saying if sim x is problematic then so is sim y ....it doesn't lead anywhere. if anything it seems like coping mechanisms.

    You focus on feeling, but to get that appropriate feeling you need proper underlying physics too.
    I agree that rf2 does tyre better than AC1 and ACC but that is criticism towards AC so it will be beneficial for ac community to show this problem, not helping rf2 in any way.
     
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  11. Sim_Player

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    I understand that my statement sounds hypocrite. If you want to improve anything then you look at good points in other and ignore its bad point.
    Focusing on ac physics flaws etc are no help to rf2
    on other hand what ac does better gives us clues on what rf2 can also do...one of the things as you mention brake temp affects tyres...acc does that.
    Take good points from other stuff / people thats how you make oneself better.
    One should look at people above them and train to be that level not people below them and stay satisfied.
    we compared our performance with aliens not noobs...thats how we improve.
    same thing with sims physics comparison...take good points from other.
     
  12. MotherDawg

    MotherDawg Registered

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    Hi David,
    I don't come to the S397 forums often as S397 have locked some of my other threads for no reasons. There were no flaming or anything... just the core users telling S397 they suck... but hey, impressive, this thread hasn't been locked. Today I'm here to asked them haven't they fixed the thing they broke: Check your Controller.JSON, at the bottom (line 1508), in the last section: "PlayerFileOverrides", there is a new value in the "Exaggerate Yaw" of -0.8. Even if you set it to zero in the game, you will still have view point yaw. It seems it comes back each time you load a wheel profile.

    Also make sure it's at zero in the Player.JSON too (line 380).

    So to answer the topic's question, yes. I run in a league and race online usually twice a week and run my qualy setups with -0.5 camber and 15psi... I sometime top the chart... in practice as my qualy psyc... sucks. :(
    I run a bit more camber with a few more pounds during the race as it helps make the tire last longer as it heats up a little less.

    ---

    Who wants to bet ?
    In the next S397 update, there will be more eye candy, the pressures and the cambers of the tire model will still be broken, the Exaggerated Yaw wont be fixed and they'll have broken something else.
     
    Last edited: Sep 11, 2021
  13. Lazza

    Lazza Registered

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    It's less likely than you coming and repeating or stating things as fact without any evidence or willingness to discuss details. Your posts are becoming background noise.
     
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  14. juanchioooo

    juanchioooo Registered

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    Every time they update, they break 3 things, they fix another three and they stop fixing ten more, that's obvious ... I'm not going to go into what the colleague says or stops saying, I don't follow him, but what I said is A proven fact, I do not think about what they do next time, but the past is just as I have commented

    the tire and the pressures that had to be the first priority are still broken ......... and how many years have passed ....... and it continues
     
    Last edited: Sep 11, 2021
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  15. Binny

    Binny Registered

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    I like getting new things in updates but would like to hear more on what has been broken if its going to be fixed will it be re implemented ect.. As for issues everyone knows have been around for a long period i would just like some honesty & transparency on when these issues will be addressed, lets hope with them employing new staff the sim moves a lot more quickly in these areas of concern by the users.
     
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  16. davehenrie

    davehenrie Registered

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    They have BEEN very open and transparent. NOTHING gets fixed til after the CS and UI are completely sorted. That has been known for several years and nothing seems to have changed that would alter that plan. I too hope the new jobs can equal many many fixes.
     
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  17. MotherDawg

    MotherDawg Registered

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    Lazza, you're a good guy... wake up!
    You know as well as I do that S397 broke the tire model, the staple of rF2, and they don't care.
     
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  18. Lazza

    Lazza Registered

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    That's not the point! You can't go making (or repeatedly pasting) claims without any proof, and then don't even bother answering posts (like David's in this very thread) indicating evidence to the contrary.
     
  19. Binny

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  20. David O'Reilly

    David O'Reilly Registered

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    Can I ask what car and what type of league is this? (Front or RWD, GT cars, Open wheelers, Oval racing circuit racing?).
    Give us an example of your front and rear camber in a quali and race setup? That will help more than " a bit more camber".
    Better still if you can share both quali and race your setups. I will test them.
     

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