User Tools


Wheel Group

Table of Contents

WheelGroup inspector.

Steering

  • Steer Coefficient determines how much the wheel will steer depending on input. In general cars would have Steer Coefficient of 1 in front and 0 in the back, except for four wheel steering cars where rear axle usually steers opposite of the front so the value would be negative. Examples:
    • 1 - 100% steering.
    • 0 - no steering.
    • -0.5 - 50% steering in the opposite direction.
Vehicle with Steer Coefficient of 1 on the front axle and -0.5 on the rear axle. Steering wheel turned fully to the right.
  • Ackerman Percent - check this Wikipedia link for more info about Ackerman Steering setup. Set to <0 for Reverse or Anti Ackermann or >0 for Ackermann steering. Field represents percent where 0.12 equals 12% of the steer angle. Following image describes the effect:
Effect of Ackerman setting on steering.

Brakes

  • Brake Coefficient - amount of brake torque used as a percentage of BrakesMax Torque.
  • Handbrake Coefficient - amount of brake torque applied when handbrake is activated.

Geometry

  • Toe Angle - toe angle in degrees.
Toe angle. Positive on the left (toe-in) and negative on the right (toe-out).
  • Caster Angle - caster angle in degrees.
ImageCaption
  • Camber At Top and Camber At Bottom - camber angle in degrees at the top (fully compressed) and the bottom (fully relaxed) of suspension travel. Current value will be an interpolated result between the two.

Axle

Axle settings are used only if there are exactly two wheels in the WheelGroup.

  • Anti Roll Bar Force - force that imitates anti-roll bar in a vehicle. Before increasing value it is best to make sure that the center of mass of the vehicle is correct as too high center of mass can result in unstable vehicle. Too high values can introduce jitter to the vehicle as the ARB will try to equalize the suspension travel of both wheels
  • Is Solid - Imitates solid axle and auto-adjusts camber to make sure that both wheels always stay parallel to each other.