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- SiiNunit
- {
- physics_data: .phdata
- {
- # Several changes have been made in v1.33:
- # - Suspension springing linearity curves recalibrated and made slightly progressive to simulate air springs
- # - Chassis suspension damping linearity curve recalibrated to simulate different compression and rebound behaviour
- # - Chassis suspension travel and working point recalibrated to mimic actual real-life parameters
- # - Maximum steering lock increased slightly to calibrate trucks' turning circles
- # - Braking curve made more linear to better simulate actual braking behaviour at lower speeds
- # - Cabin suspension and damping reworked
- # - Cabin mass increased to 650kg for better simulation accuracy
- # - Wheel mass reduced for better accuracy
- # - Chassis suspension damping adjusted for better accuracy
- # - Trailer suspension reworked with resistant forces applied at the fifth wheel to replicate the effects of trailer chassis flex
- # v1.35 Changelog:
- # - 4-point truck cab suspension
- # - Increased cab mass to 700kg (~the average mass of different cabs with different heights)
- # - Overhaul of trailer/truck weight distribution algorithm
- # - Better/more realistic weight distribution for tandem axles to improve traction
- # - Realignment of tyre collisions with their models to ensure that trucks/trailers roll more accurately
- # - Several bug fixes
- # Further physics improvements are constantly in the works to improve the driving simulation in-game.
- version: 2
- # These coeficients are used for computing autocentering wheel speed.
- # The faster vehicle moves and the more steering wheel is turned left or right
- # the higher autocentering speed is.
- # Given value of speed_coef is for 100km/h velocity (linear raise).
- # Given value of angle_coef is for maximum wheel turn (30degrees, linear raise).
- # Returning speed coeficient is computed by multiplication of both coeficients.
- # When result coeficient is 1, returning speed is exactly the same as full
- # turning speed. This balance points define natural limits of steering
- # dependent on vehicle speed.
- # Ratio_coef defines upper limit of result coeficient (ratio against player).
- steering_speed_coef: 4.0
- steering_angle_coef: 2.0
- steering_ratio_coef: 0.95
- # Maximum allowed rotation of the front wheels (degrees)
- max_visual_rotation: 38
- # Modification of base steering sensitivity depending on truck speed.
- # Used only with relative steering (keyboard, joypad).
- steering_sensitivity_multiplier_0kmh: 1.0
- steering_sensitivity_multiplier_100kmh: 0.4
- steering_sensitivity_multiplier_minimum: 0.2
- steering_sensitivity_multiplier_maximum: 10.0
- # maximum allowed relative angles in degrees between truck and trailer joints
- fifth_wheel_pitch: 20
- fifth_wheel_roll: 3
- trailer_joint_pitch: 20
- trailer_joint_roll: 3
- spreader_joint_pitch: 5
- spreader_joint_roll: 3
- # brake strength
- brake_torque_factor: 0.2
- # how much stronger braking is at low speeds
- braking_curve_peak_rel: 3.0
- # where approx. the braking curve bends
- brake_characteristic_rpm: 250
- # front brakes are stronger by this factor
- brake_balance: 1.1
- # maximum brake temperature
- max_brake_temperature: 200
- # how much brakes cool down
- brake_cooling_rate: 0.01
- # how much brakes warm up
- brake_friction_warming_rate: 4
- cabin_max_pitch_angle_front: 2.25
- cabin_max_pitch_angle_rear: 2.25
- cabin_max_roll_angle: 2.25
- cabin_suspension_travel: 0.05
- cabin_suspension_damping_factor: 1.0
- cabin_sway_bar_factor: 1.0
- cabin_cog_height_offset: 0.5
- cabin_mass: 700
- wheel_mass: 100
- # wheel suspension damping strength
- damping_scaling_front_factor: 1.0
- damping_scaling_rear_factor: 0.8
- damping_scaling_trailer_factor: 0.5
- # anti-roll/sway-bar stiffness (only applies to the front axle)
- sway_bar_stiffness_factor: 1.0
- # intensity of engine braking (not motor brake)
- thrust_characteristic_viscosity_factor: 1.0
- # transmission resistance
- transmission_viscosity_factor: 1.0
- # retarder resistance
- transmission_viscosity_retarder_factor: 1.0
- # rotational wheel resistance
- wheel_viscosity_factor: 1.0
- # clutch strength
- clutch_viscosity_factor: 1.0
- clutch_connected_viscosity_factor: 10
- manual_clutch_viscosity_factor: 0.5
- manual_clutch_connected_viscosity_factor: 10
- # torque converter strength
- torque_converter_viscosity_factor: 0.2
- torque_converter_locked_viscosity_factor: 10
- # relative magnitude of flywheel inertia
- inertia_scaling_const: 1.0
- # transmission inertia relative to the flywheel
- transmission_rel_flywheel_inertia: 0.5
- # approximate air resistance: resistant_force = air_resistance * sqr(speed)
- air_resistance: 3
- # friction parameters
- # stiffness of tyre material
- bristle_stiffness_longitudinal_factor: 1
- bristle_stiffness_lateral_factor: 1
- # damping of tyre deformation
- bristle_damping_longitudinal_factor: 1
- bristle_damping_lateral_factor: 1
- # coefficients related to wheel slipping
- slip_longitudinal_factor: 0.00971
- slip_lateral_factor: -0.17891
- }
- }
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