Document ID: chunk:federal_register_of_legislation:F2014C01118:front:0:p18
Version: federal_register_of_legislation:F2014C01118
Segment Type: other
Provision Reference: 
Character Range: 52479–55570

not less than five points in the range 0.2 'E' to 1.0 'E'. These points must be equally spaced.  Where a test was not conducted at 1.0 'E', the torque from a test conducted at 0.8 'E' or greater may be increased pro-rata to derive output torque at 1.0 'E'.
21.3.2.                          Parameters relevant to the specification of the 'Brakes' actuator including its stroke at each energy level of the signal provided to the 'Brakes' actuator must be recorded. In the case of 'S-Cam' air systems this will include the actuator size, slack adjuster length and any other special feature.
21.3.3.                          Measurements must be taken in accordance with the relevant conditions for the road test described in parts 9 and 10.
21.3.4.                          The 'Brakes' must be burnished before conducting any effectiveness tests according to the brake manufacturer's recommended procedures.
21.3.5.                          Specification of effectiveness for 'Foundation Brakes' must be on the basis of 'Axle' performance with two brake assemblies rather than wheel performance.
21.3.6.                          The 'Foundation Brake' must, on the next application after not less than 20 successive applications, each not more than 70 seconds after the preceding one and with the total of 20 applications completed within 20 minutes, of the trailer 'Brakes' from an initial speed of V1 km/h to a final speed as calculated by clause 21.3.6.1, achieve a calculated brake torque, when tested in accordance with part 10, at a nominated energy level of the signal provided to the 'Brakes' actuator, of not less than 60 percent of the brake torque achieved at that Actuator Supply Energy level when tested in accordance with clause 21.3.1. The chosen, nominated energy level of the signal provided to the 'Brakes' actuator, must not be less than that necessary to produce a calculated 'Established Retardation Coefficient' of 0.45 under the Service Brake test Conditions described in part 10 when laden to the 'GALR' without prior fade conditioning stops.
21.3.6.1.                    The final speed to which the trailer has to be successively braked as part of the brake fade conditioning procedure must be determined from the equation

         where:

         V1 is the initial speed in km/h

         V2  is the final speed in km/h

         Masses and Loads in tonnes

21.3.6.2.                    The temperature (100 °C) requirement of clause 9.3 does not apply to the test required by clause 12.1.
21.4.                                Suspension Behaviour, 'Brake Reactive Suspensions' only.
21.4.1.                          'Suspension Systems' for other than hinged drawbar 'Pig Trailers'.
21.4.1.1.                    The suspension must be installed according to the 'Manufacturer's' instructions to a representative trailer, be fitted with 'Axles', wheels and tyres of a size appropriate to the mass rating of the suspension, and be fitted with identical "Pre-calibrated" 'Brakes' at each 'Axle'.
21.4.1.1.1.              "Pre-calibrated" in this case means that the