Page 10 - 2016-v.1-Part 3(EN)

TBIS 4210-3:2016

While the force is maintained, rotate the wheel manually in the direction of forward movement of the
bicycle and determine whether or not the wheel is free to rotate, and whether or not any damage to the
front mudguard adversely affects wheel rotation (blocking of the wheel) and the steering.

4.2.2 Front mudguard without stays test methods

Press the front mudguard at a distance of 20 mm from its free end with a 20-mm-diameter, flat-ended
tool radially towards the tyre with a force of 80 N as shown in Figure 2.

While the force is maintained, rotate the wheel manually in the direction of forward movement of the
bicycle and determine whether or not the front mudguard is rolled up the wheel, and whether or not any
damage to the front mudguard adversely affects wheel rotation (blocking of the wheel) or obstructs the
steering. Contact between tyre and mudguard is allowed.

4.3 Road test on a fully assembled bicycle test methods

First, check and adjust, if necessary, each bicycle selected for the road test to ensure that the steering and
wheels rotate freely without slackness and that brakes are correctly adjusted and do not impede wheel
rotation. Check and adjust wheel alignment and, if necessary, inflate tyres to the maximum inflation
pressure. Check and correct, if necessary, transmission-chain adjustment, and check any gear controls
for correct and free operation.

Carefully adjust the saddle and handlebar positions to suit the rider.

The test shall be carried out with the permissible total weight specified by the manufacturer in
TBIS 4210-2:2016, Clause 5 item h). Ensure that the bicycle is ridden for at least 1 km.

4.4 Marking test
4.4.1 Durability test of marking
Rub the marking by hand for 15 s with a piece of cloth soaked in water and again for 15 s
with a piece of cloth soaked in petroleum spirit.
4.4.2 Safety requirement of marking
The paint component should meet the requirements of RoHS.

4.5 Fatigue test

The force for fatigue tests is to be applied and released progressively, not to exceed 10 Hz. The tightness
of fasteners according to manufacturer’s recommended torque can be re-checked not later than 1 000
test cycles to allow for the initial settling of the component assembly. (This is considered applicable to
all components, where fasteners are present for clamping.) The test bench shall be qualified to meet the
dynamic requirements of 4.1.4.

NOTE Examples of suitable methods are listed in Reference [1].

4.6 Fatigue test for composite components

For fatigue test for composite components, the initial value of displacement (peak-to-peak value) is
taken after 1 000 cycles and before 2 000 cycles.

4.7 Impact test

For all vertical impact tests, the striker shall be guided in such a way that the efficiency will permit to
reach at least 95 % of the free-fall velocity.

NOTE See Annex B.

4.8 Plastic material test ambient temperature

All strength tests involving any plastic materials shall be pre-conditioned for 2 h and tested at an
ambient temperature of 23 °C ± 5 °C.
4