Page 35 - TBIS_15194-2019_(EN)_3nd
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TBIS 15194:2019
Actuate each brake-lever with a force of 180 N applied at the point as specified in
Figure 4 — or a force sufficient to bring the brake-lever into contact with the
handlebar grip, whichever is the lesser. Maintain this force while subjecting the
bicycle to five forward and five rearward movements, each of which is not less than
75 mm distance.
Then conduct the test described in 4.3.5.7 or 4.3.5.8 as appropriate depending on
the style of brake, and then the test described in 4.3.5.9.
4.3.5.6 Brake adjustment
Each brake shall be equipped with an adjustment mechanism either manual or
automatic.
Each brake shall be capable of adjustment with or without the use of a tool to an
efficient operating position until the friction material has worn to the point of
requiring replacement as recommended in the manufacturer's instructions. Also,
when correctly adjusted, the friction material shall not contact anything other than
the intended braking surface.
The brake blocks of a bicycle with rod brakes shall not come into contact with the
rim of the wheels when the steering angle of the handlebars is set at 60°, nor shall
the rods bend, or be twisted after the handlebars are reset to the central position.
4.3.5.7 Hand-operated braking-system – Strength test
4.3.5.7.1 Requirement
When tested by the method described in 4.3.5.7.2, there shall be no failure of the
braking-system or of any component thereof.
4.3.5.7.2 Test method
Conduct the test on a fully-assembled bicycle. After it has been ensured that the
braking system is adjusted according to the recommendations in the manufacturer's
instructions, apply a force to the brake-lever at the point as specified in Figures 4.
This force shall be 450 N, or such lesser force as is required to bring:
a) a brake-lever into contact with the handlebar grip or the handlebar where the
manufacturer does not fit a grip;
b) a brake extension-lever level with the surface of the handlebar or in contact with
the handlebar;
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