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Lift over-steer in the Porsche Carrera 3.0 RSR

Discussion in 'Chit Chat Room' started by Orne, Sep 23, 2017.

  1. Orne

    Orne Alien

    Lift over-steer appears to be non existent in this car. If I take it into a reasonably fast turn and abruptly lift the throttle mid corner the rear end doesn't step out.

    Or perhaps I lack a basic understanding of lift over-steer.
     

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  3. Berniyh

    Berniyh Alien

    Should it?

    But you can force that behaviour by adjusting the setup to react differently to weight transfer.
    Stiffen the rear, make the front softer and it will stick it's arse out at any opportunity.
     
  4. Orne

    Orne Alien

    Its been my understanding that Porsche 911s, especially the older ones are notorious for lift over-steer when mid corner. Your suggestion regarding the setup is a good tip , thanks !
     
    detoit likes this.
  5. Stereo

    Stereo Alien

    That one has like, 8 inch wider body on the back to reduce lift oversteer.
     
  6. Berniyh

    Berniyh Alien

    Keep in mind that this is a race car with race car suspension and a race car chassis, so it might behave differently from the street 911.
     
  7. LeSunTzu

    LeSunTzu Alien

    The 74 RSR did not have the lift-off oversteer typical of prior Porsche's due to the larger rear tyres and improved suspension. Similarly you hardly see them lift the inner front wheel when cornering hard, contrary to prior models.
     
  8. Orne

    Orne Alien

    ok we are on the same page. I wondered about the inner front wheel lifting issue, I've seen this quite frequently with the RS. I've yet to see similar behavior in the RSR.
     
  9. chakko

    chakko Alien

    Shouldn't a car with rear-mounted engine have less lift off oversteer by default? After all, the weight is rather in the back, making the back less prone to lose grip on sudden weight transfer, right?
     
  10. RedLoto

    RedLoto Racer

    pendulum effect, the rear engine give you great traction at corner exit
     
  11. Ace Pumpkin

    Ace Pumpkin Alien

    On corner entry, yes. The 911s are dangerous mid corner when lifting. It's that complex thing called newtonian physics. :)
     
  12. chakko

    chakko Alien

    I always found the older Porsche's quite whacky to drive in most sims anyway. :p Tricky balance, which makes you have to counter-steer with double the rotation you'd do with, e.g. a BMW, because the weight balance is to the rear, and the front is so light. In AC, it's okay, but, if you got the RSR 3.0 into drifting in GT legends, for example, you could hardly catch the rear, once it was gone.
     
  13. Berniyh

    Berniyh Alien

    The key is that pedal next to the brake. ;)
    And no, not the clutch. :p
     
  14. Ace Pumpkin

    Ace Pumpkin Alien

    Your in a silly mood, I guess? :D
     
  15. Berniyh

    Berniyh Alien

    When people talk like that about my favourite car, yes. ;)
     
  16. MrDeap

    MrDeap Hardcore Simmer

    There's not much lift off oversteer unless you screw up by gearing too much down.
     
  17. Fat Rich

    Fat Rich Hardcore Simmer

    Not surprised you're getting no lift off oversteer, you're winding on so much steering lock that you're breaking traction with the front tyres and inducing massive understeer. :eek:

    This video also explains why your setup tips never make any sense to me! ;)

    I don't know how you manage to set decent laptimes with that driving style, but if it works for you.... :) You must get through a lot of front tyres though ;)
     
  18. liakjim

    liakjim Alien

    R u driving like that or is it for demonstrating reasons ?

    Στάλθηκε από το m2 note μου χρησιμοποιώντας Tapatalk
     
    Robin_NL and Ace Pumpkin like this.
  19. MrDeap

    MrDeap Hardcore Simmer

    @Fat Rich, I shouldn't get a decent lap time driving like that, it's not skill. :p

    @liakjim demonstration
     
    Ace Pumpkin and Fat Rich like this.
  20. Berniyh

    Berniyh Alien

    It can be done (sorry for the ****ty video quality, PC is struggling):

    In some of the corners you can see that it does indeed oversteer when lifting suddenly.
    But it also does a lot of other types of oversteer as well. :D

    Setup is attached. The lift-off oversteer is more pronounced when you stiffen the rear a bit more, but like this it's very controllable and thus more fun. :)
     

    Attached Files:

  21. MrDeap

    MrDeap Hardcore Simmer

    I'm actually steer like a mad man after releasing the brake at some parts. If the lift off oversteer would be actually there. Many magical driving skill(aka exploit) goes down. :rolleyes:
     

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