BS ISO 8709:2010 pdf free download – Mopeds一Brakes and brake systems一Tests and measurement methods.
4.3 Ambient temperature
The ambient temperature shall be between 4 °C and 45 °C.
4.4 Test lane for dynamic tests
The test area immediately after the point at which the test is to commence shall be marked with a lane of sufficient length for the moped to be brought to a stop.
In the case of two-wheeled mopeds (3-1), this lane shall be 2,5 m wide. In the case of three-wheeled mopeds (3-2), this lane shall have a width of 2,5 m plus the moped width.
5 Moped preparation
5.1 Tyres
The tyres shall be inflated to the moped manufacturer’s recommended pressure levels as appropriate to the
vehicle loading condition for the test.
5.2 Engine idle speed
The engine idle speed shall be set to the moped manufacturer’s specification.
5.3 Mass distribution
The mass distribution on the axles for laden moped tests shall be in accordance with the moped
manufacturer’s specifications and shall be noted in the test report.
5.4 Instrumentation
The moped shall be prepared for the tests specified in Table 1 by the provision, the calibration, or the provision and calibration of existing instruments, as required.
Optional instruments may be added to provide data, but care shall be taken to ensure that no equipment significantly affects the brake system performance or the dynamic characteristics of the moped.
5.5 Burnishing
5.5.1 General
Prior to submitting a moped for tests, the moped brakes shall be burnished. This procedure may be completed by the moped’s manufacturer.
5.5.2 Moped condition
The moped condition shall be as follows:
a) moped lightly loaded;
b) engine disconnected.
NOTE If the mass of the lightly loaded moped exceeds the mass of the laden moped, the laden condition is used for the purposes of this subclause.
5.5.3 Procedure
The test procedure shall be as described below.
a) Test speed:
initial speed: 50 km/h or 0,8 Vmax, whichever is lower;
— final speed: 5 km/h to 10 km/h.
b) Brake application: each service brake system control actuated separately.
c) Moped deceleration:
— single front brake system only: between 3,0 rn/s2 and 3,5 m/s2
— single rear brake system only: between 1,5 m/s2 and 2,0 m/s2
— CBS: between 3,5 m/s2 and 4,0 m/s2.
d) Number of decelerations: 100 per brake system.
e) Initial brake temperature before each brake application: 100 °C.
f) For the first stop, accelerate the moped to the initial speed and then actuate the brake control under the conditions specified until the final speed is reached. Then, reaccelerate to the initial speed and maintain that speed until the brake temperature falls to the specified initial value. When these conditions are met, reapply the brake as specified. Repeat this procedure for the number of specified decelerations. After burnishing, adjust the brakes in accordance with the moped manufacturer’s recommendations.
6 Test requirements
6.1 Brakes.