Page 8 - 2016-v.1-Part 5(EN)

TBIS 4210-5:2016

Key
1 handlebar grip
2 handlebar
3 drawing attachment
4 hooking ring
5 clearance

NOTE The hooking ring can be divided.

Figure 1 — Example of handlebar grip drawing attachment

4.1.2 Hot water test

Immerse the handlebar, with handlebar grips fitted, in hot water of +60 °C ± 2 °C for 1 h. Remove the
handlebar from the hot water, allow the handlebar to stabilize at ambient temperature for 30 min, and
apply a force of 100 N to the grip in the loosening direction as shown in Figure 1. Maintain this force for
1 min.

4.2 Handlebar stem — Lateral bending test

For stems which have a quill for insertion into a fork steerer, clamp the quill securely in a fixture to
the minimum insertion depth as specified in TBIS 4210-2:2016, 4.7.3, or for stem extensions
which clamp directly on to an extended fork steerer, attach the extension to a fork steerer according
to the manufacturer’s instructions and clamp this fork steerer securely in a fixture to the appropriate
height. Assemble a test bar to the stem, and apply a force of F 1 at a distance of d from the axis of the
stem as shown in Ta ble 1 and Figure 2. Maintain this force for 1 min.

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