Cycles — Safety requirements for bicycles for young children

ISO 8098:2014 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. ISO 8098:2014 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. ISO 8098:2014 is not applicable to special bicycles intended for performing stunts (e.g. BMX bicycles).

Cycles — Exigences de sécurité relatives aux bicyclettes pour jeunes enfants

L'ISO 8098:2014 spécifié les méthodes d'essai et les exigences de sécurité et de performance à observer lors de la conception, de l'assemblage et des essais des bicyclettes pour jeunes enfants et de leurs sous-ensembles, et précise les lignes directrices concernant l'utilisation et l'entretien de celles-ci. L'ISO 8098:2014 est applicable aux bicyclettes qui ont une hauteur maximale de selle comprise entre 435 mm et 635 mm et qui sont propulsées par une force transmise à la roue arrière. L'ISO 8098:2014 ne s'applique pas aux bicyclettes spéciales prévues pour le «stunting» (par exemple, les bicyclettes BMX).

General Information

Status
Withdrawn
Publication Date
04-Jun-2014
Current Stage
9599 - Withdrawal of International Standard
Completion Date
10-Jan-2023
Ref Project

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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 8098:2014(E)
©
ISO 2014

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ISO 8098:2014(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
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.
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ii © ISO 2014 – All rights reserved

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ISO 8098:2014(E)

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
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ISO 8098:2014(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. 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.
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ISO 8098:2014(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 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.
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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
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ISO 8098:2014(E)

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
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ISO 8098:2014(E)

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 involving static, impact or
fatigue loading as specified in 4.8 to 4.14 inclusive and 4.16.
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 the 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.
NOTE It should be noted that if more than one test is conducted on the same sample, earlier test 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.
It is permitted to carry out tests with dummy assemblies such as a fork or handlebar when carrying out
frame or handlebar stem tests.
4.1.4 Tolerances
Unless stated otherwise, accuracy tolerances based on the nominal values shall be as follows:
— Forces and torques: 0/+5 %
— Masses and weights: ±1 %
— Dimensions: ±1 mm
— Angles:  ±1°
— Time duration: ±5 s
— Temperatures: ±2 °C
— Pressures:  ±5 %
4.1.5 Fatigue test
The force for fatigue tests is to be applied and released progressively, not to exceed 10 Hz. The tightness
of fasteners according to manufacturer’s recommended torque can be re-checked not later than 1 000
test cycles to allow for the initial settling of the component assembly. (This is considered applicable to
all components, where fasteners are present for clamping.) The test bench shall be qualified to meet
dynamic requirements of 4.1.4.
[7]
NOTE Examples of suitable methods are listed in Reference in the Bibliography.
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ISO 8098:2014(E)

4.1.6 Plastic material test ambient temperature
All strength tests involving any plastic materials shall be pre-conditioned for two hours and tested at an
ambient temperature of 23 °C ± 5 °C.
4.1.7 Impact test
For all vertical impact test, the striker shall be guided in such a way that the efficiency will allow a value
of at least 95 % of the free velocity.
NOTE See Annex B.
4.2 Toxicity
Any items which come into intimate contact with the rider (i.e. causing any hazard due to sucking or
licking) shall comply with national regulations specific to children’s products.
4.3 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.
4.4 Security and strength of safety-related fasteners
4.4.1 Security of screws
Any screws used in the assembly of suspension systems, bracket attached electric generators, brake-
mechanisms and mud-guards to the frame or fork, and the saddle to the seat-post shall be provided with
suitable locking devices to prevent unintentional loosening, e.g. lock-washers, lock-nuts, thread locking
compound or stiff nuts.
Fasteners used to assemble hub and disc brakes should have heat-resistant locking devices.
NOTE The screws used to attach hub-generator are not included.
4.4.2 Minimum failure torque
The minimum failure torque of bolted joints for the fastening of handlebars, handlebar-stems, bar-ends,
saddles and seat-posts shall be at least 50 % greater than the manufacturer’s recommended tightening
torque.
4.4.3 Quick-release devices
Quick-release devices shall not be fitted.
4.4.4 Foot location devices
Toe-straps and toe-clips shall not be fitted.
4.4.5 Folding bicycle mechanism
If folding bicycles mechanism is provided, it shall be designed so that the bicycle can be locked for use in
a simple, stable, safe way and when folded no damage shall occur to any cables. No locking mechanism
shall contact the wheels or tyres during riding, and it shall be impossible to unintentionally loosen or
unlock the folding mechanisms during riding.
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ISO 8098:2014(E)

4.5 Crack detection methods
Standardised methods should be used to emphasize the presence of cracks where visible cracks are
specified as criteria of failure in tests specified in this International Standard.
[2][3][4][5]
NOTE For example, suitable dye-penetrant methods are specified in ISO 3452 (all parts) .
4.6 Protrusions
These requirements are intended to address the hazards associated with the users of bicycles falling on
projections or rigid components (e.g. handlebars, levers) on a bicycle possibly causing internal injury or
skin puncture.
Tubes and rigid components in the form of projections which constitute a puncture hazard to the rider
should be protected. The size and shape of the end protection has not been stipulated, but an adequate
shape shall be given to avoid puncturing of the body. Screw threads which constitute a puncture hazard
shall be limited to a protrusion length of one major diameter of the screw beyond the internally threaded
mating part.
4.7 Brakes
4.7.1 Braking-systems
Bicycles, whether or not fitted with a fixed transmitted drive, shall be equipped with at least two
independently actuated braking systems, one system operating on the front wheel and one on the rear.
The decision on whether the rear braking system is operated by the rider’s hand or foot should be made
in accordance with the legislation, custom or preference of the country to which the bicycle is to be
supplied.
Brake-blocks containing asbestos shall not be permitted.
4.7.2 Hand-operated brakes
4.7.2.1 Brake-lever position
The brake-levers for front and rear brakes shall be positioned according to the legislation or custom and
practice of the country in which the bicycle is to be sold, and the bicycle manufacturer shall state in the
users instruction manual which lever operates the front brake and which operates the rear brake, see
also Clause 5 b).
4.7.2.2 Brake-lever grip dimensions
4.7.2.2.1 Requirement
The maximum grip dimension, d, measured between the outer surfaces of the brake-lever and the
handlebar, or the handlebar-grip or any other covering where present, shall not exceed 75 mm over a
distance of 40 mm as shown in Figure 1. For dimension a see 4.7.2.2.2.
The brake-lever may be adjusted to permit these dimensions to be obtained.
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ISO 8098:2014(E)

Dimension in millimetres
Key
a distance between the last part of the lever intended for contact with the rider’s fingers and the end of the
lever
d brake-lever grip dimension
Figure 1 — Brake-lever grip dimensions
4.7.2.2.2 Test method
Fit the gauge illustrated in Figure 2 over the handlebar and handlebar-grip and the brake-lever as shown
in Figure 3 so that the face A is in contact with the handlebar grip and the side of the brake-lever. Ensure
that the face B is in uninterrupted contact with the part of the brake-lever which is intended for contact
with the rider’s fingers and that the gauge does not cause any movement of the brake-lever towards
the handlebar or handlebargrip. Measure the distance a, the distance between the last part of the lever
intended for contact with the rider’s fingers and the end of the lever (see 4.7.2.2.1 and 4.7.2.3).
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ISO 8098:2014(E)

Dimension in millimetres
Key
A face A
B face B
C rod
Figure 2 — Brake-lever grip dimension gauge
Figure 3 — Method of fitting the gauge to the brake-lever and handlebar
(minimum grip length is shown)
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ISO 8098:2014(E)

4.7.2.3 Brake-levers — Position of applied force
For the purposes of all braking tests in this International Standard the test force shall be applied at a
distance, b, which is equal to either dimension a as determined in 4.7.2.2.2 or 25 mm from the free end
of the brake-lever, whichever is the greater (see Figure 4).
Key
F applied force
b ≥ 25 mm
Figure 4 — Position of applied force on brake-lever
4.7.3 Attachment of brake assembly and cable requirements
Cable pinch-bolts shall not sever any of the cable strands when assembled to the manufacturer’s
instructions. In the event of a cable failing, no part of the brake mechanism shall inadvertently inhibit
the rotation of the wheel.
The cable end shall either be protected with a cap that shall withstand a removal force of 20 N or be
otherwise treated to prevent unraveling.
NOTE See 4.4 in relation to fasteners.
4.7.4 Brake-block and brake-pad assemblies — Security test
4.7.4.1 Requirement
The friction material shall be securely attached to the holder, backing-plate, or shoe and there shall be
no failure of the assembly when tested by the method specified in 4.7.4.2. The brake system shall be
capable of meeting the strength test specified in 4.7.7 and the braking performance specified in 4.7.8.
4.7.4.2 Test method
Conduct the test on a fully assembled bicycle with the brakes adjusted to a correct position with a rider
or equivalent mass on the saddle. The combined mass of the bicycle and rider (or equivalent mass) shall
be 30 kg.
Actuate each brake-lever with a force of 130 N applied at the point as specified in 4.7.2.3 or a force
sufficient to bring the brake-lever into contact with the handlebar grip, whichever is the lesser. Maintain
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ISO 8098:2014(E)

this force while subjecting the bicycle to five forward and five rearward movements, each of which is not
less than 75 mm distance.
4.7.5 Brake adjustment
Each brake shall be capable of adjustment with or without the use of a tool to an efficient operating
position until the friction material has worn to the point of requiring replacement as recommended in
the manufacturer’s instructions.
Also, when correctly adjusted, the friction material shall not contact anything other than the intended
braking surface.
If brake adjustment can be achieved without the use of a tool, the adjuster shall be designed to prevent
for incorrect use or incorrect operation.
4.7.6 Back-pedal brake
Back-pedal brakes shall be actuated by the rider’s foot pedaling in the opposite direction to the drive
force. The brake mechanism shall function independently of any drive gear positions or adjustments.
The differential between the drive and brake positions of the crank shall not exceed 60°.
The measurement shall be taken with the crank held against each position with a pedal force of at least
140 N. The force shall be maintained for 1 min in each position.
4.7.7 Braking-system — Strength tests
4.7.7.1 Hand-operated brake — Requirement
When tested by the method described in 4.7.7.2, there shall be no failure of the braking-system or of any
component thereof.
4.7.7.2 Hand-operated brake — Test method
Conduct the test on a fully assembled bicycle. After it has been ensured that the braking system is
adjusted according to the recommendations in the manufacturer’s instructions, apply a force at the
point specified in 4.7.2.3 and normal to the axis of handlebar in the grip area in the plane of travel of the
lever, as shown in Figure 4. The force shall be 300 N, or a lesser force required to bring:
a) a cable-brake lever into contact with the handlebar grip or the handlebar where the manufacturer
does not fit a grip, or
b) a rod-operated brake lever level with the upper handlebar grip surface.
Repeat the test for a total of 10 times on each brake-lever.
4.7.7.3 Back-pedal brake — Requirement
When tested by the method described in 4.7.7.4, there shall be no failure of the back pedal braking
system or any component thereof.
4.7.7.4 Back-pedal brake — Test method
Conduct this test on a fully assembled bicycle. Ensure that the braking system is adjusted according
to the recommendations in the manufacturer’s instructions, and that a pedal crank is in a horizontal
position (see Figure 5). Gradually apply a vertical force of 600 N to the centre of the pedal axe, and
maintain for one min.
Repeat the test five times.
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ISO 8098:2014(E)

Key
1 applied force on wheel (braking force)
2 force measuring device
3 suitable webbing wrapped around wheel circumference
4 direction of applied force on pedal (see 4.7.7.4 and 4.7.8.4)
Figure 5 — Measurement of braking force from back-pedal brake
4.7.8 Braking performance
4.7.8.1 Hand-operated brake performance test — Requirement
When tested in accordance with 4.7.8.2, the average braking force of hand operated braking systems
shall increase progressively as the lever force is increased in steps of 10 N from 40 N to 80 N.
For front brakes, with the appropriate lever forces, the minimum and maximum braking forces shall
conform to Table 1.
For rear brakes, with the appropriate lever forces, the minimum braking forces shall conform to Table 1.
Table 1 — Brake lever input forces and braking forces at the tyre
Brake lever input force Braking force at the tyre
N
min. max. (front brake only)
N N
40 40 100
60 50 140
80 60 180
4.7.8.2 Hand-operated brake performance test — Test method
Conduct the hand-operated brake performance test on a bicycle fully assembled, and with the brake
correctly adjusted (the saddle and seat-post may be removed).
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ISO 8098:2014(E)

Secure the bicycle and attach a braking force measuring device to the appropriate wheel, as shown in
Figure 6.
Apply forces of 40 N, 50 N, 60 N, 70 N and 80 N progressively to the appropriate brake lever at a point
specified in 4.7.2.3 and normal to the handlebar grip in the plane of travel of the lever (see Figure 4).
For each handlever force apply a steady pulling force to the wheel through the force measuring device,
tangentially to the circumference of the tyre and in the forward-travel direction of rotation.
After one half-revolution of the wheel, record the average braking force as the wheel rotates through a
further revolution at a steady linear tyre surface speed of between 0,5 m/s and 2,0 m/s.
For each force on the lever, take the average of three readings.
Key
1 force measuring device
2 suitable webbing around wheel circumference
3 fixture
4 applied force
Figure 6 — Measurement of braking force from hand-operated brake (typical arrangement)
4.7.8.3 Back-pedal brake performance test — Requirement
When tested in accordance with 4.7.8.4, the average braking force of back-pedal braking systems
transmitted to the rear wheel shall increase p
...

DRAFT INTERNATIONAL STANDARD ISO/DIS 8098
ISO/TC 149/SC 1 Secretariat: JISC
Voting begins on Voting terminates on

2012-10-04 2013-03-04
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION    МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ    ORGANISATION INTERNATIONALE DE NORMALISATION


Cycles — Safety requirements for bicycles for young children
Cycles — Exigences de sécurité relatives aux bicyclettes pour jeunes enfants
[Revision of second edition (ISO 8098:2002)]
ICS 43.150; 97.190


ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for Standardization (ISO), and
processed under the ISO-lead mode of collaboration as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
five-month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments received, will be
submitted to a parallel two-month approval vote in ISO and formal vote in CEN.


To expedite distribution, this document is circulated as received from the committee
secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at
publication stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.



THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME
STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
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.
©  International Organization for Standardization, 2012

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ISO/DIS 8098

Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user’s country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
photocopying, recording or otherwise, without prior written permission being secured.
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Violators may be prosecuted.

ii © ISO 2012 – All rights reserved

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ISO/DIS 8098
Contents Page
Foreword . v
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
4.1.1 Definition of brake tests . 3
4.1.2 Definition of strength tests . 3
4.1.3 Numbers and condition of specimens for the strength tests . 3
4.1.4 Accuracy tolerances of test conditions for brake tests and strength tests . 3
4.2 Toxicity . 4
4.3 Sharp edges . 4
4.4 Security and strength of safety-related fasteners . 4
4.4.1 Security of screws . 4
4.4.2 Minimum failure torque . 4
4.4.3 Quick-release devices . 4
4.4.4 Foot location devices . 4
4.5 Crack detection methods. 4
4.6 Protrusions . 4
4.6.1 Requirement . 4
4.6.2 Test method . 5
4.7 Brakes . 7
4.7.1 Braking-systems . 7
4.7.2 Hand-operated brakes . 7
4.7.3 Attachment of brake assembly and cable requirements . 9
4.7.4 Brake-block and brake-pad assemblies — security test . 9
4.7.5 Brake adjustment . 10
4.7.6 Back-pedal brake . 10
4.7.7 Braking-system — strength tests . 10
4.7.8 Braking performance . 11
4.8 Steering . 13
4.8.1 Handlebar — dimensions and end fittings . 13
4.8.2 Handlebar grips . 13
4.8.3 Handlebar-stem — insertion depth mark or positive stop . 14
4.8.4 Steering stability . 14
4.8.5 Steering assembly — static strength and security tests . 15
4.8.6 Handlebar and stem assembly – fatigue test . 19
4.9 Frames . 21
4.9.1 Frame and front fork assembly – impact test (falling mass) . 21
4.9.2 Frame and front fork assembly – impact test (falling frame) . 22
4.10 Front fork . 23
4.10.1 General . 23
4.10.2 Front fork – bending fatigue test . 23
4.11 Wheels . 24
4.11.1 Rotational accuracy . 24
4.11.2 Wheel/tyre assembly – clearance . 25
4.11.3 Wheel/tyre assembly – static strength test. 25
4.11.4 Wheel retention . 26
4.12 Rims, tyres and tubes . 27
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ISO/DIS 8098
4.12.1 Tyre inflation pressure .27
4.12.2 Tyre and rim compatibility .27
4.13 Pedals and pedal/crank drive system .27
4.13.1 Pedal tread .27
4.13.2 Pedal clearance .28
4.13.3 Pedal - Impact test .28
4.13.4 Pedal/pedal-spindle —dynamic durability test .29
4.13.5 Drive system static strength test .30
4.13.6 Crank assembly — fatigue tests .31
4.14 Saddles and seat-posts .32
4.14.1 Limiting dimensions .32
4.14.2 Seat-post – insertion-depth mark or positive stop .32
4.14.3 Saddle and seat-post security test .33
4.14.4 Saddle — static strength test .33
4.14.5 Saddle and seat-post assembly fatigue test .34
4.15 Chain-guard .35
4.16 Stabilizers .36
4.16.1 Mounting and dismounting .36
4.16.2 Dimensions .36
4.16.3 Vertical load test .36
4.16.4 Longitudinal load test .37
4.17 Luggage carriers .38
4.18 Lighting systems .38
4.18.1 Front and rear light .38
4.18.2 Reflectors .38
4.18.3 Wiring harness .38
4.18.4 Warning device .39
5 Instructions .39
6 Marking .40
6.1 Requirement .40
6.2 Durability test .40
6.2.1 Requirement .40
6.2.2 Test method .40
Annex A (informative) Steering geometry .41
Bibliography .42

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ISO/DIS 8098
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 8098 was prepared by Technical Committee ISO/TC 149, Cycles, Subcommittee SC 1, Cycles and major
sub-assemblies.
This third edition cancels and replaces the second edition (ISO 8098:2002), of which has been technically
revised.
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ISO/DIS 8098
Introduction
Safety requirements for bicycles intended to be ridden on public roads by adults and children aged about eight
years and older (i.e. bicycles having saddle heights of 635 mm and above) are given in ISO 4210.
While ISO 8098 follows the lines of ISO 4210, it covers requirements for bicycles suitable for young children
aged from about four to eight years. These bicycles are not intended to be ridden on public roads and should
not be presumed to be suitably equipped for that purpose.
For safety requirements for toy bicycles intended for very young children see EN 71-1.
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DRAFT INTERNATIONAL STANDARD
ISO/DIS 8098
INTERNATIONAL STANDARD

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 stunting (e.g. BMX bicycles).
2 Normative references
The following referenced documents are indispensable for the application 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 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 8124-3, Safety of toys — Part 3: Migration of certain elements
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
a 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
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ISO/DIS 8098
3.4
crank assembly
for fatigue testing it consists of the two cranks, the pedal-spindles or adaptors, the 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
highest gear
the gear ratio which gives the greatest distance travelled for one rotation of the cranks
3.8
lowest gear
the gear ratio which gives the shortest distance travelled for one rotation of the cranks
3.9
maximum inflation pressure
maximum tyre pressure recommended by the tyre manufacturer for a safe and efficient performance
3.10
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
3.11
pedal tread surface
surface of a pedal that is presented to the underside of the foot
3.12
quick-release devices
a lever actuated mechanism that connects, retains, or secures a wheel or any other component
3.13
stabilizers
removable auxiliary wheels fitted to enable the rider to balance
3.14
toe-clip
device attached to the pedal to grip the toe end of the rider's shoe but permitting withdrawal of the shoe
3.15
toe-strap
device to securely locate a rider's shoe on a pedal
3.16
visible crack
crack which results from a test where that crack is visible to the naked eye
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ISO/DIS 8098
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 4.7.2.2.3 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 involving static, impact or fatigue
loading as specified in 4.8 to 4.14 inclusive and 4.16.
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 the 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.
During fatigue testing, the forces shall be applied and released progressively.
NOTE It should be noted that if more than one test is conducted on the same sample, earlier test 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.
It is permitted to carry out tests with dummy assemblies such as a fork or handlebar when carrying out frame
or handlebar stem tests.
4.1.4 Accuracy tolerances of test conditions for brake tests and strength tests
4.1.4.1 Tolerances
Unless stated otherwise, accuracy tolerances based on the nominal values shall be as follows:
⎯ Forces and torques 0/+5 %
⎯ Masses and weights ± 1 %
⎯ Dimensions  ± 1 mm
⎯ Angles   ± 1°
⎯ Time duration  ± 5 s
⎯ Temperatures  ± 2 °C
⎯ Pressures  ± 5 %
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ISO/DIS 8098
4.2 Toxicity
The following 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:
⎯ all paints;
⎯ handlebar handgrips;
⎯ surface of the saddle.
4.3 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.
4.4 Security and strength of safety-related fasteners
4.4.1 Security of screws
Any screws used in the assembly of suspension systems or screws used to attach generators, brake-
mechanisms and mud-guards to the frame or fork, and the saddle to the seat-post shall be provided with
suitable locking devices, e.g., lock-washers, lock-nuts, thread locking compound or stiff nuts.
NOTE 1 The screws used to attach hub-generator are not included.
NOTE 2 Fasteners used to assemble hub and disc brakes should have heat-resistant locking devices.
4.4.2 Minimum failure torque
The minimum failure torque of bolted joints for the fastening of handlebars, handlebar-stems, bar-ends,
saddles and seat-posts shall be at least 50 % greater than the manufacturer's recommended tightening torque.
4.4.3 Quick-release devices
Quick-release devices shall not be fitted.
4.4.4 Foot location devices
Toe-straps and toe-clips shall not be fitted.
4.5 Crack detection methods
Standardised methods should be used to emphasise the presence of cracks where visible cracks are
specified as criteria of failure in tests specified in this International Standard.
NOTE For example, suitable dye-penetrant methods are specified in ISO 3452.
4.6 Protrusions
4.6.1 Requirement
4.6.1.1 Exposed protrusions
Any rigid exposed protrusion longer than 8 mm (see L in Figure 1) after assembly except:
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ISO/DIS 8098
a) the front gear-change mechanism at the chain wheel;
b) the gear-change mechanism at the rear wheel;
c) the rim-brake mechanism at the front and rear wheels;
d) reflectors;
e) a lamp-bracket fitted on the head-tube.
shall terminate in a radius, R (see Figure 1), of not less than 6,3 mm. Such protrusions shall have a major end
dimension, A, not less than 12,7 mm and a minor dimension, B, not less than 3,2 mm.
Dimensions in millimetres


Key
R ≥ 6,3
A ≥ 12,7
B ≥ 3,2

Figure 1 — Examples of minimum dimensions of exposed protrusions
4.6.1.2 Exclusion zone, protective devices and screw threads
There shall be no protrusions on the top tube of a bicycle frame between the saddle and a point 300 mm
forward of the saddle, with the exception that control cables no greater than 6,4 mm in diameter and cable
clamps made from material no thicker than 4,8 mm may be attached to the top tube.
Foam pads attached to the bicycle frame to act as protective cushions are permitted, provided that the bicycle
meets the requirements for protrusions when the pads are removed.
A screw thread that is an exposed protrusion shall be limited to a protrusion length of one major diameter of
the screw beyond the internally threaded mating part.
4.6.2 Test method
Conduct the test with a protrusion test cylinder (which simulates a limb) having the dimensions shown in
Figure 2.
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ISO/DIS 8098
Dimensions in millimetres

Figure 2 — Exposed protrusion test cylinder
Manoeuvre the test cylinder in all possible attitudes towards any rigid protrusion on the bicycle. If the central
50 mm long section of the cylinder contacts the protrusion, that protrusion shall be considered to be an
exposed protrusion and it shall comply with 4.6.1.1.
Examples of protrusions that need and do not need to comply with the requirements are shown in Figure 3.

Key
1 Test cylinder
Figure 3 — Examples of protrusions
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ISO/DIS 8098
4.7 Brakes
4.7.1 Braking-systems
Bicycles, whether or not fitted with a fixed transmitted drive, shall be equipped with at least two independent
braking systems, one system operating on the front wheel and one on the rear. The decision on whether the
rear braking system is operated by the rider’s hand or foot should be made in accordance with the legislation,
custom or preference of the country to which the bicycle is to be supplied.
Brake-blocks containing asbestos shall not be permitted.
4.7.2 Hand-operated brakes
4.7.2.1 Brake-lever position
The brake-levers for front and rear brakes shall be positioned according to the legislation or custom and
practice of the country in which the bicycle is to be sold, and the bicycle manufacturer shall state in the users
instruction manual which lever operates the front brake and which operates the rear brake (see also Clause 5
b)).
4.7.2.2 Brake-lever grip dimensions
4.7.2.2.1 Requirement
The maximum grip dimension, d, measured between the outer surfaces of the brake-lever and the handlebar,
or the handlebar-grip or any other covering where present, shall not exceed 75 mm over a distance of 40 mm
as shown in Figure 4. For dimension a see 4.7.2.2.2.
NOTE The range of adjustment on the brake-lever should permit these dimensions to be obtained.
Dimension in millimetres

Key
a Distance between the last part of the lever intended for contact with the rider's fingers and the end of the lever
d Brake-lever grip dimension
Figure 4 — Brake-lever grip dimensions
4.7.2.2.2 Test method
Fit the gauge illustrated in Figure 5 over the handlebar and handlebar-grip and the brake-lever as shown in
Fig
...

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 8098:2014(F)
©
ISO 2014

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ISO 8098:2014(F)

DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2014, Publié en Suisse
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
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Tel. +41 22 749 01 11
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copyright@iso.org
www.iso.org
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ISO 8098:2014(F)

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
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ISO 8098:2014(F)

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 .41
6.1 Exigence .41
6.2 Essai de durabilité .42
6.2.1 Exigences .42
6.2.2 Méthode d’essai .42
Annexe A (informative) Géométrie de la direction .43
Annexe B (informative) Vérification de la vitesse de chute libre .44
Bibliographie .45
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ISO 8098:2014(F)

Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1 Il convient, en particulier, de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www.
iso.org/directives).
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de
droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l’élaboration du document sont indiqués dans l’Introduction et/ou dans la liste des déclarations de
brevets reçues par l’ISO (voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la signification des termes et expressions spécifiques de l’ISO liés à l’évaluation
de la conformité, ou pour toute information au sujet de l’adhésion de l’ISO aux principes de l’Organisation
mondiale du commerce (OMC) concernant les obstacles techniques au commerce (OTC), voir le lien
suivant: www.iso.org/iso/fr/avant-propos.html.
L’ISO 8098 a été élaborée par le comité technique ISO/TC 149, Cycles, sous-comité SC 1, et par le comité
technique CEN/TC 333, Cycles en collaboration.
Cette troisième édition annule et remplace la deuxième édition (ISO 8098:2002, EN 14765:2005,
EN 14765:2005+A1:2008), qui a fait l’objet d’une révision technique.
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ISO 8098:2014(F)

Introduction
La présente Norme internationale a été élaborée pour répondre à une demande présente dans le
monde entier, et son objectif est de garantir que les bicyclettes fabriquées en conformité avec celle-ci
seront aussi sûres que possible. Les essais ont été conçus pour assurer la résistance et la durabilité des
composants et de la bicyclette dans son ensemble, en exigeant une qualité élevée à tous les niveaux et
en prenant en compte les aspects de sécurité dès la phase de conception.
Le champ d’application a été restreint aux questions de sécurité et a spécifiquement évité la
normalisation des composants.
Si la bicyclette est utilisée sur la voie publique, les réglementations nationales s’appliquent.
Pour les exigences de sécurité pour les vélos jouet destinés aux très jeunes enfants, se reporter aux
règlements et normes nationales.
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NORME INTERNATIONALE ISO 8098:2014(F)
Cycles — Exigences de sécurité relatives aux bicyclettes
pour jeunes enfants
1 Domaine d’application
La présente norme spécifie les méthodes d’essai et les exigences de sécurité et de performance à
observer lors de la conception, de l’assemblage et des essais des bicyclettes pour jeunes enfants et de
leurs sous-ensembles, et précise les lignes directrices concernant l’utilisation et l’entretien de celles-ci.
La présente norme est applicable aux bicyclettes qui ont une hauteur maximale de selle comprise entre
435 mm et 635 mm et qui sont propulsées par une force transmise à la roue arrière.
La présente norme ne s’applique pas aux bicyclettes spéciales prévues pour le «stunting» (par exemple,
les bicyclettes BMX).
2 Références normatives
Les documents suivants, en tout ou partie, sont référencés de façon normative dans le présent document
et sont indispensables à son application. Pour les références datées, seule l’édition citée s’applique.
Pour les références non datées, la dernière édition du document de référence s’applique (y compris les
éventuels amendements).
ISO 1101, Spécification géométrique des produits (GPS) — Tolérancement géométrique — Tolérancement
de forme, orientation, position et battement
ISO 5775-1, Pneumatiques et jantes pour cycles — Partie 1: Désignation et cotes des pneumatiques
ISO 5775-2, Pneumatiques et jantes pour cycles — Partie 2: Jantes
ISO 6742-2, Cycles — Dispositifs d’éclairage et dispositifs rétroréfléchissants — Partie 2: Dispositifs
rétroréfléchissants
ISO 11243, Cycles — Porte-bagages pour bicyclettes — Exigences et méthodes
3 Termes et définitions
Pour les besoins du présent document, les termes et définitions suivants s’appliquent.
3.1
bicyclette
cycle à deux roues
3.2
Levier de frein
Levier actionnant le dispositif de freinage
3.3
force de freinage
force tangentielle dirigée vers l’arrière s’exerçant entre le pneumatique et le sol ou le pneumatique et le
tambour ou la courroie de la machine d’essai
3.4
ensemble pédalier
pour les essais de fatigue, il s’agit des deux manivelles, des adaptateurs des axes de pédale, de l’axe du
pédalier et du premier composant du système de transmission, par exemple, le plateau
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ISO 8098:2014(F)

3.5
cycle
tout véhicule muni d’au moins deux roues et propulsé exclusivement ou principalement par l’énergie
musculaire de la personne se trouvant sur ce véhicule, en particulier par l’intermédiaire de pédales
3.6
saillie à découvert
saillie qui, de par son emplacement et sa rigidité, pourrait présenter un danger pour le cycliste soit
par un contact fort avec celle-ci durant l’utilisation normale, soit si le cycliste tombe dessus lors d’un
accident
3.7
rupture
séparation involontaire en deux parties ou plus
3.8
vitesse la plus élevée
rapport de vitesse qui procure la distance parcourue la plus grande pour un tour de pédale
3.9
vitesse la moins élevée
rapport de vitesse qui procure la distance parcourue la plus petite pour un tour de pédale
3.10
pression de gonflage maximale
pression maximale du pneumatique recommandée par le fabricant du pneumatique pour un
fonctionnement sûr et efficace, et si la pression maximale de la jante a été marquée à la fois sur le
pneumatique et la jante, pression maximale du pneumatique en fonction de la plus faible pression de
gonflage marquée sur la jante ou le pneumatique
3.11
hauteur maximale de selle
distance verticale entre le sol et la partie supérieure de la surface de la selle, mesurée avec la selle dans
une position horizontale et avec la tige de selle réglée à la profondeur minimale d’introduction
3.12
surface d’appui de la pédale
surface de la pédale qui est en contact avec la face inférieure du pied
3.13
mécanismes de blocage rapide
dispositif actionné par un levier destiné à relier, maintenir ou sécuriser une roue ou tout autre
composant
3.14
stabilisateurs
roues auxiliaires amovibles permettant au cycliste de rester en équilibre
3.15
cale-pied
dispositif fixé à la pédale pour maintenir le bout de la chaussure d’un cycliste sur une pédale mais
permettant de dégager la chaussure
3.16
courroie de cale-pied
dispositif pour maintenir de manière sûre la chaussure d’un cycliste sur une pédale
3.17
fissure visible
fissure apparue suite à un essai et qui peut être vue à l’œil nu
2 © ISO 2014 – Tous droits réservés

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ISO 8098:2014(F)

4 Exigences et méthodes d’essai
4.1 Essai de freinage et essais de résistance — Exigences particulières
4.1.1 Définition des essais de freinage
Les essais de freinage pour lesquels des précisions définies en 4.1.4 sont requises, sont ceux spécifiés de
4.7.2.3 à 4.7.8.4 inclus.
4.1.2 Définition des essais de résistance
Les essais de résistance pour lesquels des précisions définies en 4.1.4 sont requises, sont ceux
impliquant des charges statiques, impacte ou fatigue spécifiés de 4.8 à 4.14 inclus et en 4.16.
4.1.3 État et nombres d’échantillon pour les essais de résistance
En général pour les essais statique, d’impact et de fatigue, chaque essai doit être réalisé sur un nouvel
échantillon, mais si un seul échantillon est disponible, il est permis de réaliser l’ensemble des essais sur
le même échantillon en respectant la séquence d’essai fatigue puis statique puis impacte.
Lorsque plus d’un essai est réalisé sur le même échantillon, la séquence d’essai doit être clairement
notée dans le rapport d’essai ou les enregistrements d’essai.
NOTE Il faut indiquer que si plus d’un essai est réalisé sur le même échantillon, les essais précédents peuvent
influer sur le résultat des essais suivants. Aussi, si un échantillon échoue, lorsqu’il a été soumis à plus d’un essai,
une comparaison directe avec le résultat d’un essai unique n’est pas possible.
Pour tous les essais de résistance, les échantillons doivent être entièrement finis.
Il est permis d’effectuer des essais avec des ensembles factices tel qu’une fourche ou un guidon lors de
la réalisation des essais de cadre ou potence de guidon.
4.1.4 Tolérances
Sauf indication contraire spécifiées par ailleurs, les tolérances sur les valeurs nominales doivent être:
— Forces: 0/+5 %
— Masses et poids: ± 1 %
— Dimensions: ± 1 mm
— Angles: ± 1°
— Durée: ± 5 s
— Températures: ± 2 °C
— Pressions: ± 5 %
4.1.5 Essai de fatigue
La force pour les essais de fatigue doit être appliquée et libéré progressivement, en excédant pas 10 Hz.
Le serrage des éléments de fixation au couple recommandé par le fabricant peut être vérifié de nouveau
au plus tard après 1000 cycles d’essai pour permettre la vérification de l’assemblage des composants.
(Ceci est considéré comme applicable à tous les composants, où des attaches sont utilisées pour le
serrage). Le banc d’essai doit être qualifié pour répondre aux exigences dynamiques du 4.1.4.
[7]
NOTE Des exemples de procédés appropriés sont énumérés en Bibliographie – Référence .
© ISO 2014 – Tous droits réservés 3

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ISO 8098:2014(F)

4.1.6 Matière plastique température ambiante d’essai
Tous les essais de résistance impliquant des matières plastiques doivent être préalablement
conditionnés pendant deux heures et soumis à essai à température ambiante de 23° ± 5 °C.
4.1.7 Essai d’impact
Pour tous les essais de choc vertical, le percuteur doit être guidé de manière à permettre un rendement
d’au moins 95% de la vitesse de chute libre.
NOTE Voir l’Annexe B.
4.2 Toxicité
Tous les éléments qui entrent en contact intime avec le cycliste (c’est-à-dire qui sont susceptibles
d’entraîner des risques s’ils sont sucés ou léchés) doivent être conformes aux réglementations nationales
spécifiques aux produits pour enfants.
4.3 Arêtes vives
Les arêtes à découvert susceptibles de venir en contact avec les mains, les jambes, etc. du cycliste
pendant la marche normale, la manipulation normale ou l’entretien normal ne doivent pas être vives,
par exemple ébavurées, cassées, laminées ou traitées par des techniques comparables.
4.4 Sécurité et résistance des éléments de fixation relatifs à la sécurité
4.4.1 Sécurité des vis
Toutes les vis utilisées pour l’assemblage des systèmes de suspension, pour fixer les génératrices, les
mécanismes de freinage et les garde-boue au cadre ou à la fourche ou au guidon doivent être munies
d’un élément de blocage approprié, tel que par exemple une rondelle élastique, un contre-écrou ou un
écrou auto freiné.
Il convient que les dispositifs de fixation utilisés pour assembler les freins sur moyeu et les freins à
disque comportent des éléments de blocage résistant à la chaleur.
NOTE Les vis utilisées pour fixer le moyeu génératrice ne sont pas incluses.
4.4.2 Couple de rupture minimal
Le couple de rupture minimal des assemblages boulonnés pour la fixation des guidons, des potences de
guidon, des prolongateurs de guidon, des selles et des tiges de selle doit être supérieur d’au moins 50 %
au couple de serrage recommandé par le fabricant.
4.4.3 Mécanismes de blocage rapide
Les dispositifs de blocage rapide ne doivent pas être installés.
4.4.4 Dispositif de localisation du pied
Les cale pied et les courroies de cale pied ne doivent pas être installés.
4.4.5 Mécanisme de bicyclette pliante
Lorsqu’un mécanisme de bicyclette pliante est prévu, il doit être conçu de manière à pouvoir bloquer
la bicyclette de façon simple, stable et sûre en vue de son utilisation et, en position repliée, à ne pas
endommager les câbles. En roulage, les dispositifs de blocage ne doivent pas toucher les roues ou les
pneumatiques et il doit être impossible de desserrer ou déverrouiller les mécanismes de pliage.
4 © ISO 2014 – Tous droits réservés

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