Cycles - Safety requirements for bicycles - Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles (ISO 4210-2:2015)

This part of ISO 4210 specifies safety and performance requirements for the design, assembly, and
testing of bicycles and sub-assemblies having saddle height as given in Table 1, and lays down guidelines
for manufacturer’s instructions on the use and care of such bicycles.
This part of ISO 4210 applies to young adult bicycles with maximum saddle height of 635 mm or more
and less than 750 mm, city and trekking bicycles, mountain bicycles, and racing bicycles that have a
maximum saddle height of 635 mm or more including folding bicycles (see Table 1 and Figure 1).
This part of ISO 4210 does not apply to specialized types of bicycle, such as delivery bicycles, recumbent
bicycles, tandems, BMX bicycles, and bicycles designed and equipped for use in severe applications such
as sanctioned competition events, stunting, or aerobatic manoeuvres.
NOTE For bicycles with a maximum saddle height of 435 mm or less, see ISO 8124-1, and with a maximum
saddle height of more than 435 mm and less than 635 mm, see ISO 8098.

Fahrräder - Sicherheitstechnische Anforderungen an Fahrräder - Teil 2: Anforderungen für City- und Trekkingfahrräder, Jugendfahrräder, Geländefahrräder (Mountainbikes) und Rennräder (ISO 4210-2:2015)

Cycles - Exigences de sécurité des bicyclettes - Partie 2: Exigences pour bicyclettes de ville et de randonnée, de jeune adulte, de montagne et de course (ISO 4210-2:2015)

L'ISO 4210-2:2015 spécifie les exigences de sécurité et de performance à observer lors de la conception, de l'assemblage et des essais des bicyclettes et de leurs sous-ensembles et précise les lignes directrices concernant les instructions d'utilisation et d'entretien fournies par les fabricants de ces bicyclettes.
L'ISO 4210-2:2015 s'applique aux bicyclettes jeunes adultes ayant une hauteur maximale de selle supérieure ou égale à 635 mm et inférieure à 750 mm, aux bicyclettes de ville et tout chemin (trekking), aux bicyclettes tout terrain et aux bicyclettes de course ayant une hauteur maximale de selle supérieure ou égale à 635 mm, y compris les bicyclettes pliantes.
L'ISO 4210-2:2015 ne s'applique pas aux types spécialisés de bicyclettes comme les bicyclettes de livraison, les bicyclettes couchées, les tandems, les bicyclettes BMX et les bicyclettes conçues et équipées pour une utilisation dans des usages sévères telles que des compétitions réglementées, des cascades ou des figures acrobatiques.

Kolesa - Varnostne zahteve za kolesa - 2. del: Zahteve za mestna in treking kolesa, kolesa za mlade, gorska in tekmovalna kolesa (ISO 4210-2:2015)

Ta del standarda ISO 4210 določa varnostne in tehnične zahteve za zasnovo, sestavo in
preskušanje koles in njihovih podsestavov z višino sedeža, podano v preglednici 1, ter določa smernice za proizvajalčeva navodila za uporabo in nego takšnih koles.
Ta del standarda ISO 4210 velja za kolesa za mlade z maksimalno višino sedeža najmanj 635 mm in največ 750 mm, mestna in treking kolesa, gorska kolesa in tekmovalna kolesa z maksimalno višino sedeža najmanj 635 mm, vključno z zložljivimi kolesi (glejte preglednico 1 in sliko 1).
Ta del standarda ISO 4210 ne velja za specializirane vrste koles, na primer dostavna kolesa, ležeča kolesa, tandemska kolesa, kolesa BMX in kolesa, zasnovana in opremljena za uporabo v zahtevnih pogojih, na primer na sankcioniranih tekmovanjih, za izvajanje trikov in akrobacij.
OPOMBA Za kolesa z maksimalno višino sedeža 435 mm ali manj glejte standard ISO 8124-1, za kolesa z maksimalno višino sedeža najmanj 435 mm in največ 635 mm pa glejte standard ISO 8098.

General Information

Status
Published
Public Enquiry End Date
05-Jul-2015
Publication Date
01-Nov-2015
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
06-Oct-2015
Due Date
11-Dec-2015
Completion Date
02-Nov-2015

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SLOVENSKI STANDARD
SIST EN ISO 4210-2:2015
01-december-2015
1DGRPHãþD
SIST EN ISO 4210-2:2014

Kolesa - Varnostne zahteve za kolesa - 2. del: Zahteve za mestna in treking kolesa,

kolesa za mlade, gorska in tekmovalna kolesa (ISO 4210-2:2015)

Cycles - Safety requirements for bicycles - Part 2: Requirements for city and trekking,

young adult, mountain and racing bicycles (ISO 4210-2:2015)

Fahrräder - Sicherheitstechnische Anforderungen an Fahrräder - Teil 2: Anforderungen

für City- und Trekkingfahrräder, Jugendfahrräder, Geländefahrräder (Mountainbikes) und

Rennräder (ISO 4210-2:2015)

Cycles - Exigences de sécurité des bicyclettes - Partie 2: Exigences pour bicyclettes de

ville et de randonnée, de jeune adulte, de montagne et de course (ISO 4210-2:2015)

Ta slovenski standard je istoveten z: EN ISO 4210-2:2015
ICS:
43.150 Kolesa Cycles
97.220.40 Oprema za športe na Outdoor and water sports
prostem in vodne športe equipment
SIST EN ISO 4210-2:2015 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 4210-2:2015
---------------------- Page: 2 ----------------------
SIST EN ISO 4210-2:2015
EN ISO 4210-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2015
EUROPÄISCHE NORM
ICS 43.150 Supersedes EN ISO 4210-2:2014
English Version
Cycles - Safety requirements for bicycles - Part 2:
Requirements for city and trekking, young adult, mountain
and racing bicycles (ISO 4210-2:2015)

Cycles - Exigences de sécurité des bicyclettes - Partie 2: Fahrräder - Sicherheitstechnische Anforderungen an

Exigences pour bicyclettes de ville et de randonnée, de Fahrräder - Teil 2: Anforderungen für City- und

jeune adulte, de montagne et de course (ISO 4210- Trekkingfahrräder, Jugendfahrräder, Geländefahrräder

2:2015) (Mountainbikes) und Rennräder (ISO 4210-2:2015)
This European Standard was approved by CEN on 8 August 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4210-2:2015 E

worldwide for CEN national Members.
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SIST EN ISO 4210-2:2015
EN ISO 4210-2:2015 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 4210-2:2015
EN ISO 4210-2:2015 (E)
European foreword

This document (EN ISO 4210-2:2015) has been prepared by Technical Committee ISO/TC 149 “Cycles”

in collaboration with Technical Committee CEN/TC 333 “Cycles” the secretariat of which is held by UNI.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by March 2016, and conflicting national standards shall

be withdrawn at the latest by March 2016.

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

patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent

rights.
This document supersedes EN ISO 4210-2:2014.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 4210-2:2015 has been approved by CEN as EN ISO 4210-2:2015 without any

modification.
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SIST EN ISO 4210-2:2015
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SIST EN ISO 4210-2:2015
INTERNATIONAL ISO
STANDARD 4210-2
Second edition
2015-09-01
Cycles — Safety requirements for
bicycles —
Part 2:
Requirements for city and trekking,
young adult, mountain and racing
bicycles
Cycles — Exigences de sécurité des bicyclettes —
Partie 2: Exigences pour bicyclettes de ville et de randonnée, de jeune
adulte, de montagne et de course
Reference number
ISO 4210-2:2015(E)
ISO 2015
---------------------- Page: 7 ----------------------
SIST EN ISO 4210-2:2015
ISO 4210-2:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 4210-2:2015
ISO 4210-2:2015(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

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

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

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Requirements .......................................................................................................................................................................................................... 2

4.1 Toxicity ........................................................................................................................................................................................................... 2

4.2 Sharp edges ................................................................................................................................................................................................ 2

4.3 Security and strength of safety-related fasteners ..................................................................................................... 2

4.3.1 Security of screws ........................................................................................................................................................... 2

4.3.2 Minimum failure torque ............................................................................................................................................ 3

4.3.3 Folding bicycle mechanism ..................................................................................................................................... 3

4.4 Crack detection methods ................................................................................................................................................................ 3

4.5 Protrusions ................................................................................................................................................................................................. 3

4.6 Brakes ............................................................................................................................................................................................................. 3

4.6.1 Braking systems................................................................................................................................................................ 3

4.6.2 Hand-operated brakes ................................................................................................................................................ 4

4.6.3 Attachment of brake assembly and cable requirements ............................................................... 5

4.6.4 Brake-block and brake-pad assemblies — Security test ............................................................... 5

4.6.5 Brake adjustment ............................................................................................................................................................ 6

4.6.6 Hand-operated braking-system — Strength test ................................................................................. 6

4.6.7 Back-pedal braking system — Strength test ............................................................................................ 6

4.6.8 Braking performance ................................................................................................................................................... 6

4.6.9 Brakes — Heat-resistance test ............................................................................................................................. 9

4.7 Steering .......................................................................................................................................................................................................... 9

4.7.1 Handlebar — Dimensions ........................................................................................................................................ 9

4.7.2 Handlebar grips and plugs ...................................................................................................................................10

4.7.3 Handlebar stem — Insertion-depth mark or positive stop ......................................................10

4.7.4 Handlebar stem to fork steerer — Clamping requirements .................. ..................................10

4.7.5 Steering stability ...........................................................................................................................................................11

4.7.6 Steering assembly — Static strength and security tests .................. ...........................................11

4.7.7 Handlebar and stem assembly — Fatigue test ....................................................................................13

4.8 Frames .........................................................................................................................................................................................................13

4.8.1 Suspension-frames — Special requirements .......................................................................................13

4.8.2 Frame — Impact test (falling mass) .............................................................................................................13

4.8.3 Frame and front fork assembly — Impact test (falling frame) .............................................14

4.8.4 Frame — Fatigue test with pedalling forces .........................................................................................14

4.8.5 Frame — Fatigue test with horizontal forces .......................................................................................14

4.8.6 Frame — Fatigue test with a vertical force ............................................................................................14

4.9 Front fork ..................................................................................................................................................................................................14

4.9.1 General...................................................................................................................................................................................14

4.9.2 Means of location of the axle and wheel retention ..........................................................................14

4.9.3 Suspension forks — Special requirements ............................................................................................15

4.9.4 Front fork — Static bending test .....................................................................................................................15

4.9.5 Front fork — Rearward impact test .............................................................................................................15

4.9.6 Front fork — Bending fatigue test plus rearward impact test...............................................15

4.9.7 Forks intended for use with hub- or disc-brakes ..............................................................................16

4.9.8 Tensile test for a non-welded fork .................................................................................................................16

4.10 Wheels and wheel/tyre assembly .......................................................................................................................................16

4.10.1 Wheels/tyre assembly — Concentricity tolerance and lateral tolerance ....................16

4.10.2 Wheel/tyre assembly — Clearance ..............................................................................................................16

4.10.3 Wheel/tyre assembly — Static strength test........................................................................................17

4.10.4 Wheels — Wheel retention ..................................................................................................................................17

© ISO 2015 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 4210-2:2015
ISO 4210-2:2015(E)

4.10.5 Wheels — Quick-release devices — Operating features ............................................................18

4.11 Rims, tyres, and tubes ....................................................................................................................................................................18

4.11.1 General...................................................................................................................................................................................18

4.11.2 Tyre inflation pressure ............................................................................................................................................18

4.11.3 Tyre and rim compatibility ..................................................................................................................................18

4.11.4 Tubular tyres and rims ............................................................................................................................................18

4.11.5 Rim-wear .............................................................................................................................................................................19

4.11.6 Greenhouse effect test for composite wheels ......................................................................................19

4.12 Front mudguard ..................................................................................................................................................................................19

4.13 Pedals and pedal/crank drive system ..............................................................................................................................19

4.13.1 Pedal tread .........................................................................................................................................................................19

4.13.2 Pedal clearance ...............................................................................................................................................................20

4.13.3 Pedal — Static strength test ................................................................................................................................21

4.13.4 Pedal — Impact test ...................................................................................................................................................21

4.13.5 Pedal — Dynamic durability test ....................................................................................................................21

4.13.6 Drive system — Static strength test .............................................................................................................21

4.13.7 Crank assembly — Fatigue test ........................................................................................................................22

4.14 Drive-chain and drive belt ..........................................................................................................................................................22

4.14.1 Drive-chain .........................................................................................................................................................................22

4.14.2 Drive belt .............................................................................................................................................................................22

4.15 Chain-wheel and belt-drive protective device ..........................................................................................................22

4.15.1 Requirements ..................................................................................................................................................................22

4.15.2 Chain-wheel disc and drive pulley disc diameter .............................................................................23

4.15.3 Chain and drive belt protective device .......................................................................................................24

4.15.4 Combined front gear-change guide ..............................................................................................................25

4.16 Saddles and seat-posts ..................................................................................................................................................................26

4.16.1 Limiting dimensions ..................................................................................................................................................26

4.16.2 Seat-post — Insertion-depth mark or positive stop ......................................................................26

4.16.3 Saddle/seat-post — Security test ...................................................................................................................26

4.16.4 Saddle — Static strength test .............................................................................................................................27

4.16.5 Saddle and seat-post clamp — Fatigue test ...........................................................................................27

4.16.6 Seat-post — Fatigue test ........................................................................................................................................27

4.17 Spoke protector ...................................................................................................................................................................................27

4.18 Luggage carriers .................................................................................................................................................................................28

4.19 Road test of a fully assembled bicycle ..............................................................................................................................28

4.20 Lighting systems and reflectors ............................................................................................................................................28

4.20.1 General...................................................................................................................................................................................28

4.20.2 Wiring harness ...............................................................................................................................................................28

4.20.3 Lighting systems ...........................................................................................................................................................28

4.20.4 Reflectors ...................................................................... .......................................................................................................28

4.21 Warning device ....................................................................................................................................................................................29

5 Manufacturer’s instructions ..................................................................................................................................................................29

6 Marking .......................................................................................................................................................................................................................31

6.1 Requirement ..........................................................................................................................................................................................31

6.2 Durability test .......................................................................................................................................................................................31

Annex A (informative) Steering geometry ...................................................................................................................................................32

Bibliography .............................................................................................................................................................................................................................33

iv © ISO 2015 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 4210-2:2015
ISO 4210-2:2015(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 on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 149, Cycles, Subcommittee SC 1, Cycles and

major sub-assemblies.

This second edition cancels and replaces the first edition (ISO 4210-2:2014), which has been

technically revised.

ISO 4210 consists of the following parts, under the general title Cycles — Safety requirements for bicycles:

— Part 1: Terms and definitions

— Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles

— Part 3: Common test methods
— Part 4: Braking test methods
— Part 5: Steering test methods
— Part 6: Frame and fork test methods
— Part 7: Wheels and rim test methods
— Part 8: Pedal and drive system test methods
— Part 9: Saddles and seat-post test methods
© ISO 2015 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 4210-2:2015
ISO 4210-2:2015(E)
Introduction

This International Standard has been developed in response to demand throughout the world, and the

aim has been to ensure that bicycles manufactured in compliance with this International Standard

will be as safe as is practically possible. The tests have been 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 has been limited to safety considerations and has specifically avoided standardization of

components.
If the bicycle is to be used on public roads, national regulations apply.

For the purposes of improving repeatability and reproducibility and considering the applicability to

all types of bicycle and the size and influence of the operator, the machine test method reflects today’s

state of the art and is preferred to the track test method.

Unless there is evidence of improvement of the test track method in the future, this method will be

made informative for the next revision. Users of this International Standard are invited to provide their

feedback to ISO/TC 149/SC 1.
vi © ISO 2015 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 4210-2:2015
INTERNATIONAL STANDARD ISO 4210-2:2015(E)
Cycles — Safety requirements for bicycles —
Part 2:
Requirements for city and trekking, young adult, mountain
and racing bicycles
1 Scope

This part of ISO 4210 specifies safety and performance requirements for the design, assembly, and

testing of bicycles and sub-assemblies having saddle height as given in Table 1, and lays down guidelines

for manufacturer’s instructions on the use and care of such bicycles.

This part of ISO 4210 applies to young adult bicycles with maximum saddle height of 635 mm or more

and less than 750 mm, city and trekking bicycles, mountain bicycles, and racing bicycles that have a

maximum saddle height of 635 mm or more including folding bicycles (see Table 1 and Figure 1).

This part of ISO 4210 does not apply to specialized types of bicycle, such as delivery bicycles, recumbent

bicycles, tandems, BMX bicycles, and bicycles designed and equipped for use in severe applications such

as sanctioned competition events, stunting, or aerobatic manoeuvres.

NOTE For bicycles with a maximum saddle height of 435 mm or less, see ISO 8124-1, and with a maximum

saddle height of more than 435 mm and less than 635 mm, see ISO 8098.
Table 1 — Maximum saddle height
Dimensions in millimetres
City and trekking Racing
Bicycle type Young adult bicycles Mountain bicycles
bicycles bicycles
Maximum saddle 635 or more and less
635 or more 635 or more 635 or more
height than 750
Key
H maximum saddle height
1 minimum insertion-depth mark
2 ground plane
Figure 1 — Maximum saddle height
© ISO 2015 – All rights reserved 1
---------------------- Page: 13 ----------------------
...

SLOVENSKI STANDARD
kSIST FprEN ISO 4210-2:2015
01-julij-2015

Kolesa - Varnostne zahteve za kolesa - 2. del: Zahteve za mestna in treking kolesa,

kolesa za mlade, gorska in tekmovalna kolesa (ISO/FDIS 4210-2:2015)

Cycles - Safety requirements for bicycles - Part 2: Requirements for city and trekking,

young adult, mountain and racing bicycles (ISO/FDIS 4210-2:2015)

Fahrräder - Sicherheitstechnische Anforderungen an Fahrräder - Teil 2: Anforderungen

für City- und Trekkingfahrräder, Jugendfahrräder, Geländefahrräder (Mountainbikes) und

Rennräder (ISO/FDIS 4210-2:2015)

Cycles - Exigences de sécurité des bicyclettes - Partie 2: Exigences pour bicyclettes de

ville et de randonnée, de jeune adulte, de montagne et de course (ISO/FDIS 4210-
2:2015)
Ta slovenski standard je istoveten z: FprEN ISO 4210-2 rev
ICS:
43.150 Kolesa Cycles
kSIST FprEN ISO 4210-2:2015 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
kSIST FprEN ISO 4210-2:2015
---------------------- Page: 2 ----------------------
kSIST FprEN ISO 4210-2:2015
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 4210-2
ISO/TC 149/SC 1
Cycles — Safety requirements for
Secretariat: JISC
bicycles —
Voting begins
on: 201 5-05-07
Part 2:
Voting terminates
Requirements for city and trekking,
on: 201 5-07-07
young adult, mountain and racing
bicycles
Cycles — Exigences de sécurité des bicyclettes —
Partie 2: Exigences pour bicyclettes de ville et de randonnée, de jeune
adulte, de montagne et de course
Please see the administrative notes on page iii
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORTING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 4210-2:2015(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2015
---------------------- Page: 3 ----------------------
kSIST FprEN ISO 4210-2:2015
ISO/FDIS 4210-2:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015

All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2015 – All rights reserved
---------------------- Page: 4 ----------------------
kSIST FprEN ISO 4210-2:2015
ISO/FDIS 4210-2:2015(E)
ISO/CEN PARALLEL PROCESSING

This final draft has been developed within the International Organization for Standardization (ISO), and pro-

cessed under the ISO-lead mode of collaboration as defined in the Vienna Agreement. The final draft was

established on the basis of comments received during a parallel enquiry on the draft.

This final draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel

two-month approval vote in ISO and formal vote in CEN.
Positive votes shall not be accompanied by comments.
Negative votes shall be accompanied by the relevant technical reasons.
© ISO 2015 – All rights reserved iii
---------------------- Page: 5 ----------------------
kSIST FprEN ISO 4210-2:2015
ISO/FDIS 4210-2:2015(E)
Contents Page

Foreword ......................................................................................................................................................................................................................................vii

Introduction ............................................................................................................................................................................................................................viii

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

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

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Requirements .......................................................................................................................................................................................................... 2

4.1 Toxicity ........................................................................................................................................................................................................... 2

4.2 Sharp edges ................................................................................................................................................................................................ 2

4.3 Security and strength of safety-related fasteners ..................................................................................................... 2

4.3.1 Security of screws ........................................................................................................................................................... 2

4.3.2 Minimum failure torque ............................................................................................................................................ 3

4.3.3 Folding bicycle mechanism ..................................................................................................................................... 3

4.4 Crack detection methods ................................................................................................................................................................ 3

4.5 Protrusions ................................................................................................................................................................................................. 3

4.6 Brakes ............................................................................................................................................................................................................. 3

4.6.1 Braking systems................................................................................................................................................................ 3

4.6.2 Hand-operated brakes ................................................................................................................................................ 4

4.6.3 Attachment of brake assembly and cable requirements ............................................................... 5

4.6.4 Brake-block and brake-pad assemblies — Security test ............................................................... 5

4.6.5 Brake adjustment ............................................................................................................................................................ 6

4.6.6 Hand-operated braking-system — Strength test ................................................................................. 6

4.6.7 Back-pedal braking system — Strength test ............................................................................................ 6

4.6.8 Braking performance ................................................................................................................................................... 6

4.6.9 Brakes — Heat-resistance test ............................................................................................................................. 9

4.7 Steering .......................................................................................................................................................................................................... 9

4.7.1 Handlebar — Dimensions ........................................................................................................................................ 9

4.7.2 Handlebar grips and plugs ...................................................................................................................................10

4.7.3 Handlebar stem — Insertion-depth mark or positive stop ......................................................10

4.7.4 Handlebar stem to fork steerer — Clamping requirements .................. ..................................10

4.7.5 Steering stability ...........................................................................................................................................................11

4.7.6 Steering assembly — Static strength and security tests.................. ...........................................11

4.7.7 Handlebar and stem assembly — Fatigue test ....................................................................................13

4.8 Frames .........................................................................................................................................................................................................13

4.8.1 Suspension-frames — Special requirements .......................................................................................13

4.8.2 Frame — Impact test (falling mass) .............................................................................................................13

4.8.3 Frame and front fork assembly — Impact test (falling frame) .............................................14

4.8.4 Frame — Fatigue test with pedalling forces .........................................................................................14

4.8.5 Frame — Fatigue test with horizontal forces .......................................................................................14

4.8.6 Frame — Fatigue test with a vertical force ............................................................................................14

4.9 Front fork ..................................................................................................................................................................................................14

4.9.1 General...................................................................................................................................................................................14

4.9.2 Means of location of the axle and wheel retention ..........................................................................14

4.9.3 Suspension forks — Special requirements ............................................................................................15

4.9.4 Front fork — Static bending test .....................................................................................................................15

4.9.5 Front fork — Rearward impact test .............................................................................................................15

4.9.6 Front fork — Bending fatigue test plus rearward impact test...............................................15

4.9.7 Forks intended for use with hub- or disc-brakes ..............................................................................16

4.9.8 Tensile test for a non-welded fork .................................................................................................................16

4.10 Wheels and wheel/tyre assembly .......................................................................................................................................16

4.10.1 Wheels/tyre assembly — Concentricity tolerance and lateral tolerance ....................16

4.10.2 Wheel/tyre assembly — Clearance ..............................................................................................................16

4.10.3 Wheel/tyre assembly — Static strength test........................................................................................17

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4.10.4 Wheels — Wheel retention ..................................................................................................................................17

4.10.5 Wheels — Quick-release devices — Operating features ............................................................18

4.11 Rims, tyres, and tubes ....................................................................................................................................................................18

4.11.1 General...................................................................................................................................................................................18

4.11.2 Tyre inflation pressure ............................................................................................................................................18

4.11.3 Tyre and rim compatibility ..................................................................................................................................18

4.11.4 Tubular tyres and rims ............................................................................................................................................18

4.11.5 Rim-wear .............................................................................................................................................................................19

4.11.6 Greenhouse effect test for composite wheels ......................................................................................19

4.12 Front mudguard ..................................................................................................................................................................................19

4.13 Pedals and pedal/crank drive system ..............................................................................................................................19

4.13.1 Pedal tread .........................................................................................................................................................................19

4.13.2 Pedal clearance ...............................................................................................................................................................20

4.13.3 Pedal — Static strength test ................................................................................................................................21

4.13.4 Pedal — Impact test ...................................................................................................................................................21

4.13.5 Pedal — Dynamic durability test ....................................................................................................................21

4.13.6 Drive system — Static strength test .............................................................................................................21

4.13.7 Crank assembly — Fatigue test ........................................................................................................................22

4.14 Drive-chain and drive belt ..........................................................................................................................................................22

4.14.1 Drive-chain .........................................................................................................................................................................22

4.14.2 Drive belt .............................................................................................................................................................................22

4.15 Chain-wheel and belt-drive protective device ..........................................................................................................22

4.15.1 Requirements ..................................................................................................................................................................22

4.15.2 Chain-wheel disc and drive pulley disc diameter .............................................................................23

4.15.3 Chain and drive belt protective device .......................................................................................................24

4.15.4 Combined front gear-change guide ..............................................................................................................25

4.16 Saddles and seat-posts ..................................................................................................................................................................26

4.16.1 Limiting dimensions ..................................................................................................................................................26

4.16.2 Seat-post — Insertion-depth mark or positive stop ......................................................................26

4.16.3 Saddle/seat-post — Security test ...................................................................................................................26

4.16.4 Saddle — Static strength test .............................................................................................................................27

4.16.5 Saddle and seat-post clamp — Fatigue test ...........................................................................................27

4.16.6 Seat-post — Fatigue test ........................................................................................................................................27

4.17 Spoke protector ...................................................................................................................................................................................27

4.18 Luggage carriers .................................................................................................................................................................................28

4.19 Road test of a fully assembled bicycle ..............................................................................................................................28

4.20 Lighting systems and reflectors ............................................................................................................................................28

4.20.1 General...................................................................................................................................................................................28

4.20.2 Wiring harness ...............................................................................................................................................................28

4.20.3 Lighting systems ...........................................................................................................................................................28

4.20.4 Reflectors ...................................................................... .......................................................................................................28

4.21 Warning device ....................................................................................................................................................................................29

5 Manufacturer’s instructions ..................................................................................................................................................................29

6 Marking .......................................................................................................................................................................................................................31

6.1 Requirement ..........................................................................................................................................................................................31

6.2 Durability test .......................................................................................................................................................................................31

Annex A (informative) Steering geometry ...................................................................................................................................................32

Bibliography .............................................................................................................................................................................................................................33

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kSIST FprEN ISO 4210-2:2015
ISO/FDIS 4210-2:2015(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 on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 149, Cycles, Subcommittee SC 1, Cycles and major

sub-assemblies.

This second edition cancels and replaces the first edition (ISO 4210-2:2014), which has been technically

revised.

ISO 4210 consists of the following parts, under the general title Cycles — Safety requirements for bicycles:

— Part 1: Terms and definitions

— Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles

— Part 3: Common test methods
— Part 4: Braking test methods
— Part 5: Steering test methods
— Part 6: Frame and fork test methods
— Part 7: Wheels and rim test methods
— Part 8: Pedal and drive system test methods
— Part 9: Saddles and seat-post test methods
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kSIST FprEN ISO 4210-2:2015
ISO/FDIS 4210-2:2015(E)
Introduction

This International Standard has been developed in response to demand throughout the world, and the

aim has been to ensure that bicycles manufactured in compliance with this International Standard

will be as safe as is practically possible. The tests have been 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 has been limited to safety considerations and has specifically avoided standardization of

components.
If the bicycle is to be used on public roads, national regulations apply.

For the purposes of improving repeatability and reproducibility and considering the applicability to all

types of bicycle and the size and influence of the operator, the machine test method reflects today’s state

of the art and is preferred to the track test method.

Unless there is evidence of improvement of the test track method in the future, this method will be

made informative for the next revision. Users of this International Standard are invited to provide their

feedback to ISO/TC 149/SC 1.
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kSIST FprEN ISO 4210-2:2015
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 4210-2:2015(E)
Cycles — Safety requirements for bicycles —
Part 2:
Requirements for city and trekking, young adult, mountain
and racing bicycles
1 Scope

This part of ISO 4210 specifies safety and performance requirements for the design, assembly, and

testing of bicycles and sub-assemblies having saddle height as given in Table 1, and lays down guidelines

for manufacturer’s instructions on the use and care of such bicycles.

This part of ISO 4210 applies to young adult bicycles with maximum saddle height of 635 mm or more

and less than 750 mm, city and trekking bicycles, mountain bicycles, and racing bicycles that have a

maximum saddle height of 635 mm or more including folding bicycles (see Table 1 and Figure 1).

This part of ISO 4210 does not apply to specialized types of bicycle, such as delivery bicycles, recumbent

bicycles, tandems, BMX bicycles, and bicycles designed and equipped for use in severe applications such

as sanctioned competition events, stunting, or aerobatic manoeuvres.

NOTE For bicycles with a maximum saddle height of 435 mm or less, see ISO 8124-1, and with a maximum

saddle height of more than 435 mm and less than 635 mm, see ISO 8098.
Table 1 — Maximum saddle height
Dimensions in millimetres
City and trekking Racing
Bicycle type Young adult bicycles Mountain bicycles
bicycles bicycles
Maximum saddle 635 or more and less
635 or more 635 or more 635 or more
height than 750
Key
H maximum saddle height
1 minimum insertion-depth mark
2 ground plane
Figure 1 — Maximum saddle height
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kSIST FprEN ISO 4210-2:2015
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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.

ISO 4210-1, Cycles — Safety requirements for bicycles — Part 1: Terms and definitions

ISO 4210-3:2014, Cycles — Safety requirements for bicycles — Part 3: Common test methods

ISO 4210-4:2014, Cycles — Safety requirements for bicycles — Part 4: Braking test methods

ISO 4210-5:2014, Cycles — Safety requirements for bicycles — Part 5: Steering test methods

ISO 4210-6:2014, Cycles — Safety requirements for bicycles — Part 6: Frame and fork test methods

ISO 4210-7:2014, Cycles — Safety requirements for bicycles — Part 7: Wheels and rims test methods

ISO 4210-8:2014, Cycles — Safety requirements for bicycles — Part 8: Pedal and drive system test methods

ISO 4210-9:2014, Cycles — Safety requirements for bicycles — Part 9: Saddles and seat-post test methods

ISO 5775-1, Bicycle tyres and rims — Part 1: Tyre designations and dimensions
ISO 5775-2, Bicycle tyres and rims — Part 2: Rims

ISO 6742-1, Cycles — Lighting and retro-reflective devices — Part 1: Lighting and light signalling devices

ISO 6742-2, Cycles — Lighting and retro-reflective devices — Part 2: Retro-reflective devices

ISO 9633, Cycle chains — Characteristics and test methods

ISO 11243, Cycles — Luggage carriers for bicycles — Concepts, classification and testing

3 Terms a nd definiti ons

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

4 Requirements
4.1 Toxicity

Any items which come into intimate contact with the rider (i.e. causing any hazard due to sucking or

licking) shall comply with any national regulations specific to children’s products.

4.2 Sharp edges

Exposed edges that could come into contact with the rider’s hands, legs, etc., during normal riding or

normal handling and normal maintenance shall not be sharp, e.g. deburred, broken, rolled, or processed

with comparable techniques.
NOTE Refer to ISO 13715:2000.
4.3 Security and strength of safety-related fasteners
4.3.1 Security of screws

Any screws used in the assembly of suspension systems, brackets attached to electric generators, brake

mechanisms and mudguards to the frame or fork, and the saddle to the seat-post shall be provided with

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suitable locking devices, e.g. lock-washers, lock-nuts, thread locking compound, or stiff nuts. Fasteners

used to assemble hub and disc brakes should have h
...

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