Page 48 - TBIS_15194-2019_(EN)_3nd

TBIS 15194:2019

fitted so long as the hole does not affect the seat of the plug in the handlebar and
the fixture does not contact the handlebar during the test.

1 Handlebar grip

2 Handlebar
3 Drawing attachment
4 Hooking ring
5 Clearance

NOTE It is possible that the hooking ring be divided.
Figure 10 — Example of handlebar grip drawing attachment

4.3.6.2.3 Hot water test method

Immerse the handlebar, with handlebar grips fitted, in hot water of +60 °C ± 2 °C for

one hour. Remove the handlebar from the hot water, allow the handlebar to
stabilize at ambient temperature for 30 min, apply a force of 100 N to the grip in the
loosening direction as shown in Figure 10. Maintain this force for 1 min.

4.3.6.3 Handlebar stem – Insertion-depth mark or positive stop

The handlebar-stem shall be provided with one of the two following alternative

means of ensuring a safe insertion depth into the fork steerer:
a) it shall contain a permanent, transverse mark, of length not less than the external

diameter of the stem, that clearly indicates the minimum insertion depth of the
handlebar-stem into the fork steerer. The insertion mark shall be located at a
position not less than 2,5 times the external diameter of the handlebar-stem from

the bottom of the stem, and there shall be at least one stem diameter's length of
contiguous, circumferential stem material below the mark;

b) it shall incorporates a permanent stop to prevent it from being drawn out of the
fork steerer such as to leave the insertion less than the amount specified in a) above.

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