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Porsche gt3 cup Iracing vs AC

Discussion in 'Chit Chat Room' started by Hany, Jan 27, 2017.

Page 7 of 10
  1. Akis Kev

    Akis Kev Alien

    More like PWND
     
    Akis Kev, Feb 3, 2017
    #121
    xystof likes this.
  2. baboon

    baboon Alien

    I'm curious why in some cars such high camber is needed. Is it because of the specific suspension geometry or has it to do with the tire and race lenghts? Do they run much less camber for longruns in endurance races?
     
    baboon, Feb 3, 2017
    #122
  3. Aristotelis

    Aristotelis Will it drift? Staff Member KS Dev Team

    Certainly suspension geometry plays a role, as you know, 911s have McPherson strut at the front, and so while turning they lose dynamic camber, so they need as much static as possible...
    On the other hand, they have a sophisticated double wishbone at the rear, and still use even more negative static camber at the rear... Certainly the short cup races, permit a setup of "go for it!", without too much wear compromises.
    I also believe it is linked to the strength of the axis and hubs... I mean, the 911s run so much negative... simply because they can without breaking.
     
    Aristotelis, Feb 3, 2017
    #123
    xystof, gregack, matz_AUT and 8 others like this.
  4. Radek Zukowski

    Radek Zukowski Racer

    If they run such high camber in real life, why default setup in AC has camber values around ~3° ?
     
    Radek Zukowski, Feb 3, 2017
    #124
  5. William Levesque

    William Levesque Alien

    On iR its around 11L/lap or so at Nords Classic (havent done 24H layout) , maybe 12L for thirsty drivers, going flat out Q lap style. So probably 10L/lap without much problem in an endurance race. An hour is around 9 laps at <7:00 average. So exactly one tank of fuel (90L).

    On AC I imagine you could go a good 1h15-1h25min at ~7.5L/lap. So I dont know, Im confused. I doubt they short pit either because that'd be stupid.
     
    William Levesque, Feb 3, 2017
    #125
  6. Aristotelis

    Aristotelis Will it drift? Staff Member KS Dev Team

    Either you're confused with the 911 GT3 R (the actual GT3 car), or you are not looking at the actual numbers at the right panel. The AC default setup stays at -4.40° front and -4° at rear. That's how the car comes from the manufacturer.
    Teams push that way up to -5°, -6° and you can do so too in AC.

    Always look at the "Car Status" box at the right of the setup sliders, for the real time alignment values.
     
    Aristotelis, Feb 3, 2017
    #126
    PhilVitt, LOEVG, coret3x and 8 others like this.
  7. Minolin

    Minolin Staff Member KS Dev Team

    At least for VLN: Reduced fuel capacity. They put some kind of swimming balls into the fuel tank to reduce to 81 (83?) liters.
    This makes around slightly above 8 laps on the 24.358 km Cup layout (a few teams can include the formation lap). From a very heaty discussion I can tell that one team calculates 11l/lap and needs 10.8, while another team couldn't believe that and needed to lose a court. So at least for the VLN 991.1 this makes around 45 - 50 l/100km. Keep in mind they use air restrictors that probably reduce fuel usage as well, so AC suddenly looks very good here - or my math isn't awake yet.
     
    Minolin, Feb 3, 2017
    #127
    Berniyh and baboon like this.
  8. Radek Zukowski

    Radek Zukowski Racer

    Oh yeah, I was talking about the options in suspension tab, not the real values. Thanks for clarifying.
     
    Radek Zukowski, Feb 3, 2017
    #128
    Aristotelis likes this.
  9. William Levesque

    William Levesque Alien

    Fast early Miata track setups run around -3.5 to -4.0, maybe even -4.5 on some tracks. Thats got Double Wishbones.
     
    William Levesque, Feb 3, 2017
    #129
  10. Epistolarius

    Epistolarius Alien

    The N24 doesn't use the short Nordschleife layout.
     
    Epistolarius, Feb 3, 2017
    #130
  11. William Levesque

    William Levesque Alien

    Numbers are still relevant....

    EDIT: Actually the GP layout is very easy on fuel so you can lower the relative a bit, lowering consumption.
     
    William Levesque, Feb 3, 2017
    #131
  12. baboon

    baboon Alien

    Thank you, never thought about the strenghts before.

    Now there's gonna be one 911 which is different. The new RSR for GTLM/GTE is very interesting to read about :)
     
    baboon, Feb 3, 2017
    #132
  13. Epistolarius

    Epistolarius Alien

    [​IMG]
     
    Epistolarius, Feb 3, 2017
    #133
    Radek Zukowski likes this.
  14. baboon

    baboon Alien

    How does it drive maxed out? :D
     
    baboon, Feb 3, 2017
    #134
  15. kofotsjanne

    kofotsjanne Alien

    Speaking of that, can you make it show the value how the value would be if it were totally flat? Now its so dependant on how the pits are.
     
    kofotsjanne, Feb 3, 2017
    #135
    Schnipp likes this.
  16. William Levesque

    William Levesque Alien

    Stefano said that wasnt possible for sone reason. Or at least quite complicated.

    Kind of annoying indeed.
     
    William Levesque, Feb 3, 2017
    #136
  17. kofotsjanne

    kofotsjanne Alien

    The real value must be in some file so it must be possible. But yeah, maybe difficult and time consuming from a coding point of view.
     
    kofotsjanne, Feb 3, 2017
    #137
  18. Jynnantonix

    Jynnantonix Simracer

    Not sure what you mean by 'needed to lose a court'.

    Anyway been running the Iracing cup on nords this week (standard nordshliefe 20.8km) and using exactly 11 liters per lap, which is 53l/100, a bit more thirsty than real life but not in the region of 80l/100 as suggested previously. Anyone know how much AC uses in 1 nords lap?
     
    Jynnantonix, Feb 3, 2017
    #138
  19. Kade

    Kade Hardcore Simmer

    There's no such thing than a "real value" in files. The dynamic value is relevant which is the right side real time setup screen. The suspension arms may have a certain amount of "camber" relation to the car's body but it depends on the load-state you define the suspension with. For example if you define suspension from the car in picture below in it's current state, dropping the car down with wheels attached will load the springs and angles in suspension geometry will change. So basically showing real-time camber and toe angles on a flat-surface would require another physics client running in the background.

    [​IMG]
     
    Kade, Feb 3, 2017
    #139
  20. William Levesque

    William Levesque Alien

    Well, iR does it live in a leveled environment (also shows load at each corner, cross weight, etc), not sure what that really implies tho.
     
    William Levesque, Feb 3, 2017
    #140
    Rolla likes this.
Page 7 of 10
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