Page 54 - TBIS_15194-2019_(EN)_3nd

TBIS 15194:2019

Dimensions in millimetres

1 Minimum insertion depth

2 Clamping block

Figure 14 — Handlebar to handlebar-stem: torsional security test for applying
forces to clamping block

4.3.6.6.4 Handlebar-stem to fork steerer – Torsional security test

4.3.6.6.4.1 Requirement

When tested by the method described in 4.3.6.6.4.2, there shall be no movement of
the handlebar-stem relative to the fork steerer

4.3.6.6.4.2 Test method

Assemble the fork steerer correctly in the frame and attach the handlebar-stem to
the fork steerer with the locking system tightened in accordance with the

manufacturer's instructions, and apply a torque of T2 once in each direction of
possible rotation by applying a force on test-bar in a plane perpendicular to the axis
of the fork-steerer/handlebar-stem. Maintain each torque for 1 min. The torque is
given in Table 7.

NOTE The exact method of applying the torque may vary, and an example is shown in Figure

15.

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