ISO 8098:2014

INTERNATIONAL ISO
STANDARD 8098
Third edition
2014-06-15
Cycles — Safety requirements for
bicycles for young children
Cycles — Exigences de sécurité relatives aux bicyclettes pour jeunes
enfants
Reference number
©
ISO 2014
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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Published in Switzerland
ii © ISO 2014 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements and test methods . 3
4.1 Brake tests and strength tests — Special requirements . 3
4.2 Toxicity . 4
4.3 Sharp edges . 4
4.4 Security and strength of safety-related fasteners . 4
4.5 Crack detection methods . 5
4.6 Protrusions . 5
4.7 Brakes . 5
4.8 Steering .12
4.9 Frames .19
4.10 Front fork .22
4.11 Wheels .23
4.12 Rims, tyres and tubes .26
4.13 Pedals and pedal/crank drive system .26
4.14 Saddles and seat-posts .31
4.15 Chain-guard .35
4.16 Stabilizers .35
4.17 Luggage carriers .37
4.18 Lighting systems and reflectors .37
4.19 Warning device .38
5 Instructions .38
6 Marking .39
6.1 Requirement .39
6.2 Durability test .39
Annex A (informative) Steering geometry .40
Annex B (informative) Verification of free fall velocity .42
Bibliography .43
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. 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. 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 third edition cancels and replaces the second edition (ISO 8098:2002), which has been technically
revised.
iv © ISO 2014 – All rights reserved

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 it 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 safety requirements for toy bicycles intended for very young children see national regulations and
standards.
INTERNATIONAL STANDARD ISO 8098:2014(E)
Cycles — Safety requirements for bicycles for young
children
1 Scope
This International Standard specifies safety and performance requirements and test methods for the
design, assembly and testing of fully assembled bicycles and sub-assemblies for young children. It also
provides guidelines for instructions on the use and care of the bicycles.
This International Standard is applicable to bicycles with a maximum saddle height of more than 435 mm
and less than 635 mm, propelled by a transmitted drive to the rear wheel.
It is not applicable to special bicycles intended for performing stunts (e.g. BMX bicycles).
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 1101, Geometrical product specifications (GPS) — Geometrical tolerancing — Tolerances of form,
orientation, location and run-out
ISO 5775-1, Bicycle tyres and rims — Part 1: Tyre designations and dimensions
ISO 5775-2, Bicycle tyres and rims — Part 2: Rims
ISO 6742-2, Cycles — Lighting and retro-reflective devices — Part 2: Retro-reflective devices
ISO 11243, Cycles — Luggage carriers for bicycles — Concepts, classification and testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
bicycle
two-wheeled cycle
3.2
brake-lever
lever which operate the brake device
3.3
braking force
tangential rearward force between the tyre and the ground or the tyre and the drum or belt of the test
machine
3.4
crank assembly
drive and non-drive crank arms, pedal-spindles or adaptors, bottom-bracket spindle,
and the first component of the drive system, e.g. the chain-wheel cluster
3.5
cycle
any vehicle that has at least two wheels and is propelled solely or mainly by the muscular energy of the
person on that vehicle, in particular by means of pedals
3.6
exposed protrusion
protrusion which through its location and rigidity could present a hazard to the rider either through
heavy contact with it in normal use or should the rider fall onto it in an accident
3.7
fracture
unintentional separation into two or more parts
3.8
highest gear
gear ratio which gives the greatest distance travelled for one rotation of the cranks
3.9
lowest gear
gear ratio which gives the shortest distance travelled for one rotation of the cranks
3.10
maximum inflation pressure
maximum tyre pressure recommended by the tyre or rim manufacturer for a safe and efficient
performance, and if the maximum rim pressure was marked on both the tyre and rim, maximum tyre
pressure according to the lower marked maximum inflation pressure on the rim or tyre
3.11
maximum saddle height
vertical distance from the ground to the top of the saddle surface, measured with the saddle in a
horizontal position with the seat-post set to the minimum insertion depth
3.12
pedal tread surface
surface of a pedal that is presented to the underside of the foot
3.13
quick-release devices
lever actuated mechanism that connects, retains, or secures a wheel or any other component
3.14
stabilizers
removable auxiliary wheels fitted to enable the rider to balance
3.15
toe-clip
device attached to the pedal to grip the toe end of the rider’s shoe but permitting withdrawal of the shoe
3.16
toe-strap
device to securely locate a rider’s shoe on a pedal
3.17
visible crack
crack which results from a test where that crack is visible to the naked eye
2 © ISO 2014 – All rights reserved

4 Requirements and test methods
4.1 Brake tests and strength tests — Special requirements
4.1.1 Definition of brake tests
Brake tests to which accuracy requirements apply, as in 4.1.4, are those specified in 4.7.2.3 to 4.7.8.4
inclusive.
4.1.2 Definition of strength tests
Strength tests to which accuracy requirements apply, as in 4.1.4, are those involvi
...

NORME ISO
INTERNATIONALE 8098
Troisième édition
2014-06-15
Cycles — Exigences de sécurité
relatives aux bicyclettes pour jeunes
enfants
Cycles — Safety requirements for bicycles for young children
Numéro de référence
©
ISO 2014
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2014, Publié en Suisse
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ii © ISO 2014 – Tous droits réservés

Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Exigences et méthodes d’essai . 3
4.1 Essai de freinage et essais de résistance — Exigences particulières . 3
4.1.1 Définition des essais de freinage. 3
4.1.2 Définition des essais de résistance . 3
4.1.3 État et nombres d’échantillon pour les essais de résistance . 3
4.1.4 Tolérances . 3
4.1.5 Essai de fatigue . 3
4.1.6 Matière plastique température ambiante d’essai . 4
4.1.7 Essai d’impact . 4
4.2 Toxicité . 4
4.3 Arêtes vives . 4
4.4 Sécurité et résistance des éléments de fixation relatifs à la sécurité . 4
4.4.1 Sécurité des vis . 4
4.4.2 Couple de rupture minimal . 4
4.4.3 Mécanismes de blocage rapide . 4
4.4.4 Dispositif de localisation du pied . 4
4.4.5 Mécanisme de bicyclette pliante . 4
4.5 Méthodes de détection des fissures . 5
4.6 Saillies . 5
4.7 Freins . 5
4.7.1 Systèmes de freinage . 5
4.7.2 Freins à commande manuelle . 5
4.7.3 Fixation des dispositifs de freinage et caractéristiques requises pour les câbles . 8
4.7.4 Ensembles patins de frein et plaquettes de frein — Essai de sécurité. 8
4.7.5 Réglage des freins . 9
4.7.6 Frein à rétropédalage . 9
4.7.7 Système de freinage — Essai de résistance . 9
4.7.8 Performances de freinage .10
4.8 Direction .12
4.8.1 Guidon — Dimensions et extrémités terminales .12
4.8.2 Poignées de guidon .12
4.8.3 Potence de guidon– Repère de profondeur d’introduction ou butée .13
4.8.4 Stabilité de la direction.13
4.8.5 Ensemble de direction — Essais de sécurité et de résistance statique .14
4.8.6 Ensemble guidon — potence — Essai de fatigue .17
4.9 Cadre .19
4.9.1 Ensemble cadre/fourche — Essai de choc (chute d’une masse) .19
4.9.2 Ensemble cadre/fourche — Essai de choc (chute d’un cadre) .20
4.10 Fourche avant .22
4.10.1 Généralités .22
4.10.2 Fourche avant — essai de fatigue en flexion .22
4.11 Roues .22
4.11.1 Précision de rotation .22
4.11.2 Ensemble roue/pneumatique — Jeu de fonctionnement.24
4.11.3 Ensemble roue/pneumatique — Essai de résistance statique .24
4.11.4 Retenue des roues .25
4.12 Jantes, pneumatiques et chambres à air .26
4.12.1 Pression de gonflage des pneumatiques .26
4.12.2 Compatibilité pneu — jante .26
4.13 Pédales et ensemble de transmission pédale/manivelle .27
4.13.1 Surface d’appui de la pédale .27
4.13.2 Jeu aux pédales .27
4.13.3 Pédale - Essai de choc .28
4.13.4 Pédale/axe de pédale — Essai de durabilité dynamique .29
4.13.5 Essai de charge statique du système de transmission .30
4.13.6 Ensemble manivelle — Essais de fatigue .31
4.14 Selles et tiges de selle .32
4.14.1 Dimensions limites.32
4.14.2 Tige de selle — Repère d’introduction ou butée .33
4.14.3 Selle/tige de selle — Essai de sécurité .33
4.14.4 Selle — Essai de résistance statique .34
4.14.5 Selle et tige de selle — Essai de fatigue .35
4.15 Pare-chaîne.36
4.16 Stabilisateurs .37
4.16.1 Montage et démontage .37
4.16.2 Dimensions .37
4.16.3 Essai de charge verticale .37
4.16.4 Essai de charge longitudinale .38
4.17 Porte-bagages.39
4.18 Systèmes d’éclairage et réflecteurs .39
4.18.1 Eclairage avant et arrière .39
4.18.2 Réflecteurs.39
4.18.3 Faisceau de câblage .39
4.19 Dispositif d’avertissement .40
5 Instructions .40
6 Marquage .
...