1. #1

    WHEEL GUIDE - Force FeedBack Extra Tuning PC Version

    Hi everyone,

    The Force FeedBack is mainly computed from the Torque Alignment from Physics.
    This guide is meant for wheel users on PC that are looking for extra configuration settings.

    The Crew Team

    Editing

    In ‘my Documents\The Crew’ folder, edit or create file ExtraConfig.xml.

    Between the <ExtracConfig /> XML tag

    add those lines

    FFB_Factor="1.5f"
    FFB_LoadFactor="1.0f"
    FFB_LoadPower="1.5f"
    FFB_LatFactor="1.0f"
    FFB_SlipAngleFactor="2.0f"
    FFB_CamberFactor="0.1f"
    FFB_CamberOffset="2.5f"
    FFB_DamperFactor="0.2f"
    FFB_DamperMaxRoll="1.0f"
    FFB_DamperMaxRollVal="0.1f"
    FFB_DamperMaxSlipAngle="0.25f"
    FFB_WaitRate="5"
    FFB_SpringNoControl="0.25f"

    If the file was empty it should look like this

    <ExtraConfig
    FFB_Factor="1.5f"

    FFB_LoadFactor="1.0f"
    FFB_LoadPower="1.5f"

    FFB_LatFactor="1.0f"
    FFB_SlipAngleFactor="2.0f"

    FFB_CamberFactor="0.1f"
    FFB_CamberOffset="2.5f"

    FFB_DamperFactor="0.2f"
    FFB_DamperMaxRoll="1.0f"
    FFB_DamperMaxRollVal="0.1f"
    FFB_DamperMaxSlipAngle="0.25f"

    FFB_WaitRate="1"
    FFB_SpringNoControl="0.25f"
    />

    Explanations

    FFB is computed from the tire physics, the tire physics compute 4 things,
    Lateral Forces
    Longitudinal Forces
    Vertical Forces
    Torque Alignment

    The FFB is mainly computed from the Torque Alignment from Physics

    Sadly most consumer FFB wheel on the market are not strong enough to have a decent feeling only from this.

    That’s why I added extra configuration to “increase” some components of the FFB computation.

    There’s 4 components in the FFB :

    Tire Load
    Tire Slip Angle
    Tire Camber
    Static Damping

    Global Params
    You can tune the global gain with
    FFB_Factor="1.5f" // default value is 1.5
    It’s working exactly like the in game FFB Gain slider

    You can configure the refresh rate with
    FFB_WaitRate=”1”
    Tire physics is refreshed at 300hz, so a rate of 1 will update the FFB at 300hz too, a rate of 2 with refresh at 150hz. etc..
    Some FFB driver can’t handle hight refresh rate, if you experience frame rate issue with FFB wheel, increase this value to reduce the Refresh Rate.

    U.I. / Cinematics / Map spring effect.
    FFB_SpringNoControl="0.25f"
    When you don’t have control of the car, a basic spring effect is applied, it’s removed when you drive. You can control the Spring force with this param.

    Tire Load Config
    Tire load, is how much weight there’s on the tire, the weight of the car is pushing on the tire.
    Front Tire load is increasing when the car is braking, when there’s bumps, or compression from the begining of a slope, it’s decreasing when car is accelerating, when there’s holes, and it’s zero when the car is in air.
    The more load on the front tire the more stronger is the FFB.

    FFB_LoadFactor="1.0f"
    FFB_LoadPower="1.5f"

    Load Factor is the gain apply to FFB from the Load.
    With Load Power you can change the curve of the variation
    Pseudo formula

    FFBLoad = FrontTireLoad * LoadFactor ^ LoadPower

    Load Power may be a bit complicated to undestand, so here to example of curves


    Tire Slip Angle
    When the car is moving and you turn the steering wheel, you change the front tire angle and so increase the tire slip angle, which create a lateral force , and a tire torque alignment. The more you turn the wheel the stronger the FFB.

    FFB_LatFactor="1.0f"
    FFB_SlipAngleFactor="2.0f"

    LatFactor is the gain of the FFB part from the torque alignement.
    SlipAngleFactor is the factor applied to the slip angle for the FFB computation, if you increase this value the FFB will increase faster for smaller slip angle, which will make the FFB feel “tighter”.

    Tire Camber
    When the car is moving, if the tire lean left or right, the angle with the surface is called the camber, the more camber , the more lateral force and torque alignement and so the stronger the FFB.
    Camber is symetrical between the left and right tire, means that if the left tire is leaning to the right, the right tire is leaning to the left Otherwise the car would not drive straight. So on a flat straight line, FFB from camber of left and right tire are cancels each other.
    When 1 tire drive on a bump/hole, it’s change the camber on this tire, which create an asymetric value in the torque alignment between left and right tire, which create a force in the FFB.
    In summary with this params you can control how much you will feel bumps and holes.

    FFB_CamberOffset="2.5f"
    FFB_CamberFactor="0.1f"

    Camber Offset is to add extra camber to the real value of front tire.
    Camber Factor is the gain of this extra camber.

    Tire Damper

    The whole steering components from tire , steering rack , and steering shaft, have frictions and damping. With this params you can control that.
    Damping is a force that acting against the motion on the steering wheel. So if you turn slowly the wheel to the left you will have a slow FFB force to the right, If you turn fast to the left, the FFB will give a stronger force to the right.
    There’s 2 damping force, static damping, and rolling damping.

    FFB_DamperFactor="0.2f"
    FFB_DamperMaxRoll="1.0f"
    FFB_DamperMaxRollVal="0.1f"
    FFB_DamperMaxSlipAngle="0.25f"

    Damper Factor is the gain of this params.

    DamperMaxRoll is the max wheel rotatation in rad/s at which the static damping is minimum.
    DamperMaxRollVal is the value of the damping when wheel is rolling.

    DamperMaxSlipAngle is the slip angle value at wich the damping is zero.

    Samples

    High Torque Wheels
    Default params give too much FFB on dirt because of the bumps.
    Here a base for them ( I have a RFR High Torque Custom Wheel 14Nm )

    LoadPower is set to 1 to have pure linear FFB
    Camber effect is greatly reduced
    LatFactor is increased.

    <ExtraConfig
    FFB_Factor="1.5f"
    FFB_LoadFactor="1.0f"
    FFB_LoadPower="1.0f"
    FFB_CamberFactor="0.1f"
    FFB_CamberOffset="0.5f"
    FFB_SlipAngleFactor="2.0f"
    FFB_LatFactor="2.0f"
    FFB_DamperFactor="0.2f"
    FFB_DamperMaxRoll="1.0f"
    FFB_DamperMaxRollVal="0.1f"
    FFB_DamperMaxSlipAngle="0.25f"
    FFB_WaitRate="5"
    FFB_SpringNoControl="0.25f"
    />
     4 people found this helpful
    Share this post

  2. #2

    Supported Wheels

    This is the a list of officially supported wheels by The Crew game -

    XB1
    Mad Catz® Pro Racing™ Force Feedback Wheel
    Thrustmaster TX (officially supported by MS)

    PS4
    Thrustmaster T100
    Thrustmaster Thrustmaster T80 (officially supported by Sony)
    Thrustmaster T300RS (officially supported by Sony)
    Thrustmaster T500RS
    Shifter Th8A
    Shifter Th8RS

    PC
    Fanatec ClubSport Wheel
    Thrustmaster TX Racing Wheel
    Thrustmaster T500 RS Racing wheel (with Ferrari GTE 458 Challenge Rim )
    Thrustmaster T300RS Racing WHEEL
    T500 RS Gear Shift
    Thrustmaster T100 (Thrustmaster F430 Force Feedback)
    Thrustmaster Ferrari Red Legend
    Logitech Driving Force GT
    Logitech G27
    Top Drive Free Bird Wireless Racing Wheel & Top Drive GT Wheel / Pedals
    Twin Wheel F1 Combo Wheel
    Simraceway SRW-S1

    Some other wheels may still work with the game however, such as the Logitech G25 and several gamepads that emulate the Xbox 360 controller.
     2 people found this helpful
    Share this post