Page 7 - 2016-v.1-Part 5(EN)

TBIS 4210-5:2016

Cycles — Safety requirements for bicycles —

Part 5:

Steering test methods

1 Scope

This part of TBIS 4210 specifies the steering test methods for TBIS 4210-2.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

TBIS 4210-1:2016, Cycles – Safety requirements for bicycles – Part 1: Terms and definitions

TBIS 4210-2:2016, Cycles – Safety requirements for bicycles – Part 2: Requirements for city and
trekking, young adult, mountain and racing bicycles

TBIS 4210-3:2016, Cycles – Safety requirements for bicycles – Part 3: Common test methods

3 Terms and definitions

For the purposes of this document, the terms and definitions given in TBIS 4210-1 apply.

4 Test methods

4.1 Handlebar grips and plugs

4.1.1 Freezing test

Immerse the handlebar, with handlebar grips or plugs fitted, in water at room temperature for 1 h and
then place the handlebar in a freezer until the handlebar is at a temperature lower than −5 °C. Remove
the handlebar from the freezer and allow the temperature of the handlebar to reach −5 °C, and then
apply a force of 70 N to the grip or plug in the loosening direction as shown in Figure 1. Maintain the
force until the temperature of the handlebar has reached +5 °C. It shall be permitted to create a hole in
the plug to allow for the testing fixture to be 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.

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