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Contents
 Welcome
 Introduction
 Installation Requirements
 License
 Project Files
 Reference System
    Axis
    Units
    Reference Distance
 Design
    Design Overview
    Design Section Layout
    Create New Design
    Coordinate Inputs
       Front Suspensions
          Double A-Arm
             A-Arm Points
             Steering
                Steering Types
                Rack & Pinion
                Recirculating-Ball
             Wheel Geometry
             Anti-Roll Bar
                ARB Types
                U-Bar
                U-Bar with Intermediate Rocker
                T-Bar
                T-Bar for Monoshock
                T-Bar with Third Spring
             Spring Actuation
                Spring Actuation Types
                Direct Actuation
                Push/Pull Rod
                Separate Spring & Damper
                Monoshock Rotational
                Monoshock Sliding
                Torsion Bar
          Mac Pherson
             Wishbone & Strut
             Steering
                Steering Types
                Rack & Pinion
                Recirculating-Ball
             Wheel Geometry
             Spring
             Anti-Roll Bar
          Mac Pherson Pivot Arm
             Wishbone, Strut and Upright
             Steering
                Steering Types
                Rack & Pinion
                Recirculating-Ball
             Wheel Geometry
             Spring
             Anti-Roll Bar
          Nascar
             Control Arms
             Steering
             Wheel Geometry
             Spring & Shock
             Sway Bar
       Rear Suspensions
          Double A-Arm
             A-Arm Points
             Tie Rod
             Wheel Geometry
             Anti-Roll Bar
                ARB Types
                U-Bar
                U-Bar with Intermediate Rocker
                T-Bar
                T-Bar for Monoshock
                T-Bar with Third Spring
             Spring Actuation
                Spring Actuation Types
                Direct Actuation
                Push/Pull Rod
                Separate Spring & Damper
                Monoshock Rotational
                Monoshock Sliding
                Torsion Bar
          Mac Pherson
             Wishbone & Strut
             Tie Rod
             Wheel Geometry
             Spring
             Anti-Roll Bar
          Five Links
             Link Points
             Wheel Geometry
             Anti-Roll Bar
                ARB Types
                U-Bar
                U-Bar with Intermediate Rocker
                T-Bar
                T-Bar for Monoshock
             Spring Actuation
                Spring Actuation Types
                Direct Actuation
                Push/Pull Rod
                Separate Spring & Damper
                Monoshock Rotational
                Monoshock Sliding
          V8 Supercar
             Trailing Arms
             Watts Linkage
             Wheel Geometry
             CoilOver
             Anti-Roll Bar
                ARB Types
                U-Bar
                U-Bar with Intermediate Rocker
          Nascar
             Truck Arms
             Track Bar
             Wheel Geometry
             Spring & Shock
    Reference Points
    Design Comments
    Import/Export Design
 Motion
    Motion Overview
    Motion Section Layout
    Motion Types
       Roll
       Pitch
       Heave
       Steering
    Create New Motion
    Motion Graphs
    Import/Export Motion
 Simulator
    Simulator Overview
    Simulator Toolbar
    Add Design
    Add Motion
    Preferences
    Run Simulator
    Batch Run
 Analysis
    Analysis Overview
    Analysis Section Layout
    Create New Analysis
    Analysis Tools
       Graph Tool
       Report Tool
       Animation Tool
       Output Data Tool
    Overlay Simulation Data
    Export Analysis
 Output Channels
    Motion
    Points
    Link Lengths
    Wheel
    Upright
    Axis
       Instant Axis
       Swing Arms
       Roll & Pitch Axis
       Colinearity of Front and Rear Roll Axes
    Actuation
    Anti-Roll Bar
    Steering
    Motion Ratio
       Wheel
       Roll
       Heave
 Suspension Design Tips
    Wheelbase & Tracks
    Wheel Packaging
    KPI & Caster
    Roll Axis
    FVSAL
    Pitch Axis
    Bump Steer
    Ackermann
 
    
 
                                                                  
 

Wheel

 

Camber

Camber angle is the angle between the tilted wheel plane and the vertical. Negative camber is defined as the wheel plane being tilted towards the centerline of the vehicle. While positive camber is defined as the wheel plane being tilted away from the centerline of the car.

 

 

 

 

 

Toe Angle

Toe angle is the angle between the wheel plane and the longitudinal axis of the vehicle. Positive toe (toe out) is when the front of the wheels are steered outwards while negative toe (toe in) is when the front of the wheels are steered inwards.

 

 

 

 

 

Toe Distance

Toe distance is the same as toe angle except it is measured as a distance rather than an angle. Toe distance is the lateral distance from the trailing Rim Edge to the leading Rim Edge. Positive toe (toe out) is when the front of the wheels are steered outwards while negative toe (toe in) is when the front of the wheels are steered inwards. Toe distance is useful when setting the static toe angle using string lines.

 

 

 

Half Track

The half track is the distance between the center of the tire contact patch and the longitudinal axis of the vehicle. OptimumK also outputs the halftrack that is measured from the wheel center to the longitudinal axis of the vehicle.

 

 

 

Steer Angle

Steer Angle is the total wheel toe angle minus the static toe angle. Positive steer angle is when the front of the wheels are steered outwards more than when the suspension is in static conditions while negative steer angle is when the front of the wheels are steered inwards more than when the suspension is in static conditions. Zero steer angle is when the total wheel toe angle equals the static toe angle.

 


Wheelbase

The wheel base is the distance from the center of the front contact patch to the center of the rear contact patch. The wheelbase on either side of the car can vary as the suspension is put through a motion.

 

 

A full list of output channels can be found here.

 

 

    
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