Page 7 - 2016-v.1-Part 3(EN)

TBIS 4210-3:2016

Cycles — Safety requirements for bicycles —

Part 3:

Common test methods

1 Scope

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

2 Normative references

The following referenced 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, 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 4210-4:2016, Cycles — Safety requirements for bicycles — Part 4: Braking 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 Brake tests and strength tests

4.1.1 Definition of brake tests

Brake tests to which accuracy requirements apply, as in 4.1.4, are those specified in TBIS 4210-2:2016,
4.6.3 to 4.6.6, TBIS 4210-4:2016, 4.2, and TBIS 4210-4:2016, 4.6.3.3.

4.1.2 Definition of strength tests

Strength tests to which accuracy requirements apply, as in 4.1.4, are those involving static, impact, or
fatigue loading as specified in TBIS 4210-2:2016, 4.7 to 4.13, TBIS 4210-2:2014, 4.16, and TBIS 4210-
2:2016, 4.20.2.

4.1.3 Numbers and condition of specimens for the strength tests

In general, for static, impact, and fatigue tests, each test shall be conducted on a new test sample, but if
only one sample is available, it is permissible to conduct all of these tests on the same sample with the
sequence of testing being fatigue, static, and impact.

When more than one test is conducted on the same sample, the test sequence shall be clearly recorded in
the test report or record of testing. It should be noted that if more than one test is conducted on the same
sample, earlier tests can influence the results of subsequent tests. Also, if a sample fails when it has been
subjected to more than one test, a direct comparison with single testing is not possible.

1