Document ID: chunk:federal_register_of_legislation:F2023C00959:body:0:p18
Version: federal_register_of_legislation:F2023C00959
Segment Type: other
Provision Reference: 
Character Range: 54166–57103

θ is the angle of inclination
             We is the wheelbase in the horizontal plane
             Le is the longitudinal location of the 'CoM' in the elevated state
             r is the rolling radius of the tyres fitted to the rear wheels
       Figure 10: Axle Lift Method for a category LEM1, LEP1 or LEG1 vehicle
       3.3.2.                    Category LEM2, LEP2 and LEG2 vehicles
       3.3.2.1                With the suspension blocked to prevent movement and the vehicle in the 'Maximum Loaded Test Mass' condition:
          (a)      use a block (or blocks) to elevate the rear wheel by at least 600 mm (see Figure 11);
          (b)      determine the longitudinal location of the 'CoM' in the elevated state (Le), from the centreline of the front 'Axle', using the formula:
          Where (see Figure 11):
             We is the wheelbase in the horizontal plane
             Re is the rear 'Axle Load' on the tyre(s) with the elevated vehicle in the 'Maximum Loaded Test Mass' condition = F + R – Fe
             Fe is the front 'Axle Load' on the tyre(s) with the elevated vehicle in the 'Maximum Loaded Test Mass' condition = F + R – Re
             F is the front 'Axle Load' on the tyre(s) with the vehicle on a level surface in the 'Maximum Loaded Test Mass' condition
             R is the rear 'Axle Load' on the tyre(s) with the vehicle on a level surface in the 'Maximum Loaded Test Mass' condition
          (c)      determine the angle (θ) of declination from the formula:
          Where (see Figure 11):
             Hre is the height by which the rear wheel is elevated
             We is the wheelbase in the horizontal plane
          (d)      determine the height (h) of the 'CoM' from the formula:
          Where (see Figure 11):
             L is the longitudinal location of the 'CoM' prior to elevation (as determined according to clause 2.2 of this appendix above)
             θ is the angle of declination
             We is the wheelbase in the horizontal plane
             Le is the longitudinal location of the 'CoM' in the elevated state
             r is the rolling radius of the tyres fitted to the rear wheels
       Figure 11: Axle Lift Method for a category LEM2, LEP2 or LEG2 vehicle

       4.                                 Calculation of the horizontal distance (d) from the 'CoM' to the nearest 'roll axis'
       4.1.                           For category LEM1, LEP1 and LEG1 vehicles, the horizontal distance (d) from the 'CoM' to the nearest 'roll axis' shall be calculated from the formula shown below:
       where:
L is the longitudinal location of the 'CoM' from the centreline of the front 'Axle'

       t is the width of the wheel track of the rear 'Axle'

       W is the 'Wheelbase'

       4.2.                           For category LEM2, LEP2 and LEG2 vehicles, the horizontal distance (d) from the 'CoM' to the nearest 'roll axis' shall be calculated from the