方向盤轉一圈是360度,如果以G27設定成900度來計算,900/360=2.5,也就是G27從左死點到右死點是2.5圈,遊戲設定車頭左右前轉向輪最大轉向角度是35度,也就是說G27從左死點轉到右死點,前輪從左35度轉到右35度總共轉了70度,900/70=12.857,也就是說以真車的轉向齒輪比來算,G27設900度,遊戲車頭的轉向比理論應該是900:70也就是12.857:1
但是游戲參數並沒有這個齒比,有關轉向的參數在def-vehicle-physics裡面# 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: 35
# 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 at the fifth wheel
fifth_wheel_pitch: 20
fifth_wheel_roll: 0
最主要關係到方向盤設定跟游戲實際的反應,應該是steering_speed_coef: 4.0 steering_angle_coef: 2.0
steering_ratio_coef: 0.95這3個參數,你自己去研究這3個參數跟實際轉向比12.857:1的關係吧!!