Cycles — Safety requirements for bicycles — Part 3: Common test methods

This document specifies the common test methods for ISO 4210‑2.

Cycles — Exigences de sécurité pour les bicyclettes — Partie 3: Méthodes d'essai communes

General Information

Status
Published
Publication Date
10-Jan-2023
Current Stage
6060 - International Standard published
Due Date
12-Sep-2022
Completion Date
11-Jan-2023
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ISO 4210-3:2023 - Cycles — Safety requirements for bicycles — Part 3: Common test methods Released:11. 01. 2023
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INTERNATIONAL ISO
STANDARD 4210-3
Second edition
2023-01
Cycles — Safety requirements for
bicycles —
Part 3:
Common test methods
Cycles — Exigences de sécurité pour les bicyclettes —
Partie 3: Méthodes d'essai communes
Reference number
ISO 4210-3:2023(E)
© ISO 2023
---------------------- Page: 1 ----------------------
ISO 4210-3:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2023 – All rights reserved
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ISO 4210-3:2023(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction .................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

4 Test methods ............................................................................................................................................................................................................ 1

4.1 Brake tests and strength tests ................................................................................................................................................. 1

4.1.1 Brake tests to which special requirements apply ................................................................................ 1

4.1.2 Strength tests to which special requirements apply ......................................................................... 1

4.1.3 Numbers and condition of specimens for the strength tests...................................................... 1

4.1.4 Maximum permissible error tolerances of test conditions for brake tests

and strength tests ............................................................................................................................................................. 2

4.2 Front mudguard test methods.................................................................................................................................................. 2

4.2.1 Front mudguard with stays test methods ................................................................................................... 2

4.2.2 Front mudguard without stays test method ............................................................................................. 4

4.2.3 Front mudguard — Wheel blocking verification test ....................................................................... 4

4.3 Road test on a fully assembled bicycle test methods ........................................................................................... 5

4.4 Durability test of marking ............................................................................................................................................................ 5

4.5 Fatigue test................................................................................................................................................................................................. 6

4.6 Fatigue test for composite components ........................................................................................................................... 6

4.7 Impact test .................................................................................................................................................................................................. 6

4.8 Plastic material test ambient temperature ................................................................................................................... 6

Annex A (informative) Structural integrity of the fully assembled bicycle ...............................................................7

Annex B (informative) Verification of free-fall velocity ................................................................................................................. 9

Annex C (informative) Steering flutter ..........................................................................................................................................................10

Bibliography .............................................................................................................................................................................................................................12

iii
© ISO 2023 – All rights reserved
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ISO 4210-3:2023(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 149, Cycles, Subcommittee SC 1, Cycles

and major sub-assemblies, in collaboration with the European Committee for Standardization (CEN)

Technical Committee CEN/TC 333, Cycles, in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 4210-3:2014), which has been technically

revised.
The main changes are as follows:
— improvement of 4.2.1;
— improvement of 4.3;
— improvement of A.2;
— addition of Annex C.
A list of all parts in the ISO 4210 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2023 – All rights reserved
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ISO 4210-3:2023(E)
Introduction

This document was developed in response to a demand throughout the world. The aim is to ensure that

bicycles manufactured in conformity with this document will be as safe as is practically possible. The

tests are designed to ensure the strength and durability of individual parts as well as of the bicycle as

a whole, demanding high quality throughout and consideration of safety aspects from the design stage

onwards.

The scope is limited to safety considerations and has specifically avoided standardization of

components.
If the bicycle should be used on public roads, national regulations apply.
© ISO 2023 – All rights reserved
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INTERNATIONAL STANDARD ISO 4210-3:2023(E)
Cycles — Safety requirements for bicycles —
Part 3:
Common test methods
1 Scope
This document specifies the common test methods for ISO 4210-2.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 4210-1, Cycles — Safety requirements for bicycles — Part 1: Vocabulary

ISO 4210-2:2023, Cycles — Safety requirements for bicycles — Part 2: Requirements for city and trekking,

young adult, mountain and racing bicycles

ISO 4210-4:2023, 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 ISO 4210-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Test methods
4.1 Brake tests and strength tests
4.1.1 Brake tests to which special requirements apply

Brake tests to which maximum permissible error requirements apply, as in 4.1.4, are those specified in

ISO 4210-2:2023, 4.6.3 to 4.6.6 and ISO 4210-4:2023, 4.2 and 4.6.3.3.
4.1.2 Strength tests to which special requirements apply

Strength tests to which maximum permissible error requirements apply, as in 4.1.4, are those involving

static, impact, or fatigue loading as specified in ISO 4210-2:2023, 4.7 to 4.12, and ISO 4210-2:2023,

4.13.2, 4.15 and 4.19.2.
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.
© ISO 2023 – All rights reserved
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ISO 4210-3:2023(E)

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.

In all strength tests, specimens shall be in the fully finished condition.

4.1.4 Maximum permissible error tolerances of test conditions for brake tests and strength

tests

Unless stated otherwise, maximum permissible error tolerances based on the nominal values shall be

as follows:
— Forces and torques: 0/+5 %
— Masses: ±1 %
— Dimensions: ±1 mm
— Angles: ±1°
— Time duration: ±5 s
— Temperatures: ±2 °C
— Pressures: ±5 %
4.2 Front mudguard test methods
4.2.1 Front mudguard with stays test methods
4.2.1.1 Test method — Minimal tangential strength
Insert a 12 mm-diameter steel rod between the spokes,
...

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