EN ISO 4210-4:2014

Cycles - Safety requirements for bicycles - Part 4: Braking test methods (ISO 4210-4:2014)

ISO 4210-4:2014 specifies the braking test methods for ISO 4210‑2.

Fahrräder - Sicherheitstechnische Anforderungen an Fahrräder - Teil 4: Prüfverfahren für Bremsen (ISO 4210-4:2014)

Der vorliegende Teil von ISO 4210 legt die Prüfverfahren für Bremsen nach ISO 4210-2 fest.

Cycles - Exigences de sécurité des bicyclettes - Partie 4: Méthodes d'essai de freinage (ISO 4210-4:2014)

ISO 4210-4:2014 spécifie les méthodes d'essai de freinage pour l'ISO 4210‑2.

Kolesa - Varnostne zahteve za kolesa - 4. del: Preskusne metode za zavore (ISO 4210-4:2014)

Standard EN ISO 4210 določa preskusne metode za zavore za standard ISO 4210-2.

General Information

• Status: Withdrawn
• Publication Date: 01-Jul-2014
• Withdrawal Date: 13-Apr-2025
• ICS: 43.150 - Cycles
• Technical Committee: CEN/TC 333 - Cycles
• Drafting Committee: CEN/TC 333 - Cycles
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 25-Jan-2023
• Completion Date: 14-Apr-2025
• Directive: 2001/95/EC - Directive 2001/95/EC of the European Parliament and of the Council of 3 December 2001 on general product safety
• Mandate: M/508 - Standardisation mandate issued to the European standardisation organisations (ESOs) to develop European standards for bicycles, bicycles for young children and luggage carriers for bicycles
• Ref Project: SIST EN ISO 4210-4:2014 - Cycles - Safety requirements for bicycles - Part 4: Braking test methods (ISO 4210-4:2014)

Relations

• Replaces: EN 14781:2005 - Racing bicycles - Safety requirements and test methods
• Effective Date: 08-Jun-2022
• Replaces: EN 14766:2005 - Mountain-bicycles - Safety requirements and test methods
• Effective Date: 08-Jun-2022
• Replaces: EN 14764:2005 - City and trekking bicycles - Safety requirements and test methods
• Effective Date: 08-Jun-2022
• Replaced By: EN ISO 4210-4:2023 - Cycles - Safety requirements for bicycles - Part 4: Braking test methods (ISO 4210-4:2023, Corrected version 2023-08)
• Effective Date: 18-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2014
1DGRPHãþD
SIST EN 14764:2006
SIST EN 14766:2006
SIST EN 14781:2006
Kolesa - Varnostne zahteve za kolesa - 4. del: Preskusne metode za zavore (ISO
4210-4:2014)
Cycles - Safety requirements for bicycles - Part 4: Braking test methods (ISO 4210-
4:2014)
Fahrräder - Sicherheitstechnische Anforderungen an Fahrräder - Teil 4: Prüfverfahren für
Bremsen (ISO 4210-4:2014)
Cycles - Exigences de sécurité des bicyclettes - Partie 4: Méthodes d'essai de freinage
(ISO 4210-4:2014)
Ta slovenski standard je istoveten z: EN ISO 4210-4:2014
ICS:
43.150 Kolesa Cycles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 4210-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2014
ICS 43.150 Supersedes EN 14764:2005, EN 14766:2005, EN
14781:2005
English Version
Cycles - Safety requirements for bicycles - Part 4: Braking test
methods (ISO 4210-4:2014)
Cycles - Exigences de sécurité des bicyclettes - Partie 4: Fahrräder - Sicherheitstechnische Anforderungen an
Méthodes d'essai de freinage (ISO 4210-4:2014) Fahrräder - Teil 4: Prüfverfahren für Bremsen (ISO 4210-
4:2014)
This European Standard was approved by CEN on 21 June 2014.

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
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4210-4:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 4210-4:2014) 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 January 2015, and conflicting national standards shall be withdrawn at
the latest by July 2015.
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 14764:2005, EN 14766:2005, EN 14781:2005.
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 4210-4:2014 has been approved by CEN as EN ISO 4210-4:2014 without any modification.

INTERNATIONAL ISO
STANDARD 4210-4
First edition
2014-07-01
Cycles — Safety requirements for
bicycles —
Part 4:
Braking test methods
Cycles — Exigences de sécurité des bicyclettes —
Partie 4: Méthodes d’essai de freinage
Reference number
ISO 4210-4:2014(E)
©
ISO 2014
ISO 4210-4:2014(E)
© 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.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved

ISO 4210-4:2014(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test methods . 1
4.1 Brake lever grip dimensions . 1
4.2 Brake levers — Position of applied force . 5
4.3 Brake-block and brake-pad assemblies — Security test . 7
4.4 Hand-operated braking-system — Strength test . 7
4.5 Back-pedal braking system — Strength test . 7
4.6 Braking performance . 8
4.7 Brakes — Heat-resistance test .25
Annex A (informative) Explanation of the method of least squares for obtaining the line of best fit
and ±20 % limit lines for braking performance linearity .26
Bibliography .29
ISO 4210-4:2014(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 (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 first edition of ISO 4210-4, together with ISO 4210-1, ISO 4210-2, ISO 4210-3, ISO 4210-5, ISO 4210-6,
ISO 4210-7, ISO 4210-8, and ISO 4210-9, cancels and replaces ISO 4210:1996, 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 rims test methods
— Part 8: Pedals and drive system test methods
— Part 9: Saddles and seat-post test methods
iv © ISO 2014 – All rights reserved

ISO 4210-4:2014(E)
Introduction
This International Standard has been developed in response to the demand throughout the world. The
aim is to ensure that bicycles manufactured in compliance with this International Standard will be as
safe as is practically possible. The tests are designed to ensure the strength and durability of individual
parts as well as of the bicycle as a whole, demanding high quality throughout and consideration of safety
aspects from the design stage onwards.
The scope is limited to safety considerations, and has specifically avoided standardization of components.
If the bicycle is to be used on public roads, national regulations apply.
For the purpose of improvement of 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, make this method
informative for the next revision. Users of this International Standard are invited to provide their
feedback to the ISO/TC 149/SC 1.
INTERNATIONAL STANDARD ISO 4210-4:2014(E)
Cycles — Safety requirements for bicycles —
Part 4:
Braking test methods
1 Scope
This part of ISO 4210 specifies the braking test methods for ISO 4210-2.
2 Normative references
The following referenced documents, in whole or in part, are normatively referenced in this document
and are indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 4210-1, Cycles — Safety requirements for bicycles — Part 1: Terms and definitions
ISO 4210-2:2014, Cycles — Safety requirements for bicycles — Part 2: Requirements for city & trekking,
young adult, mountain and racing bicycles
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4210-1 apply.
4 Test methods
4.1 Brake lever grip dimensions
4.1.1 Test method for the brake lever similar to type A or type B
Fit the gauge illustrated in Figure 1 over the handlebar grip or the handlebar (when the manufacturer
does not fit a grip) and the brake lever as shown in Figure 2 so that face A is in contact with the handlebar
or grip and the side of the brake lever. Ensure that face B spans an area of that part of the brake lever
which is intended for contact with the rider’s fingers without the gauge causing any movement of the
brake lever towards the handlebar or grip. 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. The measurement should
be conducted only on a fully assembled bicycle.
ISO 4210-4:2014(E)
Dimensions in millimetres
Key
A face A
B face B
C rod
D 75 mm or 90 mm
Figure 1 — Brake lever grip dimension gauge for type A and type B
2 © ISO 2014 – All rights reserved

ISO 4210-4:2014(E)
a) Type A
b) Type B
NOTE Minimum grip length is shown.
Figure 2 — Method of fitting the gauge to the brake lever and handlebar
4.1.2 Test method for the brake lever similar to type C
Fit the gauge illustrated in Figure 3 over the handlebar and brake lever as shown in Figure 4 so that face
A is in contact with the handlebar or handlebar grip and the brake lever. Put the face of cylinder B in
ISO 4210-4:2014(E)
contact with the part of the grip intended for contact with the rider’s hand and check if the requirements
are met.
Dimensions in millimetres
Key
A face A
B face of cylinder
C rod
Figure 3 — Brake lever grip-dimension gauge for type C
4 © ISO 2014 – All rights reserved

ISO 4210-4:2014(E)
Figure 4 — Method of fitting the gauge to the brake lever and handlebar for type C
4.2 Brake levers — Position of applied force
4.2.1 Type A and B brake levers
For the purposes of braking tests in this part of ISO 4210, for brake levers similar to type A or type B,
the test force shall be applied at a distance b, which is equal to either dimension a [see ISO 4210-2:2014,
Figure 2 a) and b)] as determined in 4.1.1 or 25 mm from the free end of the brake lever, whichever is the
greater [see Figure 5 a) and Figure 5 b)].
ISO 4210-4:2014(E)
4.2.2 Type C brake levers
For the purposes of braking tests in this part of ISO 4210, for brake levers similar to type C, the test force
shall be applied at a distance of 25 mm from the free end of the brake lever [see Figure 5 c)].
a) Type A b) Type B
c) Type C
Key
F applied force
b ≥ 25 mm
Figure 5 — Position of applied force on the brake lever
6 © ISO 2014 – All rights reserved

ISO 4210-4:2014(E)
4.3 Brake-block and brake-pad assemblies — Security test
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 100 kg.
Actuate each brake lever with a force of 180 N applied at the point specified in Figure 5 or a force
sufficient to bring the brake lever into contact with the handlebar grip, whichever is lesser. Maintain
this force while subjecting the bicycle to five forward and five rearward movements, each of which is
not less than 75 mm distance.
Then conduct the test described in 4.4 or 4.5 as appropriate, depending on the style of brake, and then
the test described in 4.6.
4.4 Hand-operated braking-system — Strength test
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 to the
brake lever at the point specified in Figure 5. This force shall be 450 N, or such lesser force as is required
to bring
a) a brake lever into contact with the handlebar grip or the handlebar where the manufacturer does
not fit a grip,
b) a brake extension lever level with the surface of the handlebar or in contact with the handlebar, and
c) a secondary brake lever to the end of its travel.
Repeat the test 10 times on each brake lever, secondary brake lever, or extension lever.
4.5 Back-pedal braking system — Strength test
Conduct the test on a fully assembled bicycle. After it has been ensured that the braking system is
correctly adjusted, and with the pedal cranks in a horizontal position, as shown in Figure 6, apply a
vertically downward force to the centre of the left-hand pedal spindle. Increase the force progressively
to 1 500 N and maintain fully for 1 min.
ISO 4210-4:2014(E)
Key
1 chain
2 hub sprocket
3 non-drive side crank
4 cycle chain wheel and pedal crank
5 point of force application
6 pedal
Figure 6 — Back-pedal brake test
4.6 Braking performance
4.6.1 Test bicycle
Conduct the braking performance test on a fully assembled bicycle after the brakes have been subjected
to the strength test detailed in ISO 4210-2:2013, 4.6.6, and 4.6.7. Before testing the bicycle by either
method, inflate the tyres and adjust the brakes according to the manufacturer’s instructions. In the case
of rim-brakes, adjust it to the maximum clearance specified by the manufacturer.
4.6.2 Secondary brake levers
Where a bicycle is fitted with secondary brake levers attached to brake levers, bar-ends, or aerodynamic
extensions, separate tests shall be conducted for the operation of the secondary brake levers in addition
to tests with the normal levers.
8 © ISO 2014 – All rights reserved

ISO 4210-4:2014(E)
4.6.3 Track test method
4.6.3.1 Test track
a) Use an indoor test track if possible. If an outdoor test track is used, pay special attention to ambient
conditions throughout the test.
b) The gradient of the track shall not exceed 0,5 %. If the gradient is less than 0,2 % carry out all runs
in the same direction. If the gradient lies between 0,2 % and 0,5 %, carry out alternate runs in
opposite directions.
c) The surface shall be hard, of concrete or fine asphalt, and free from loose dirt or gravel. The minimum
coefficient of friction between the dry surface and the bicycle tyre shall be 0,75.
d) The track shall be essentially dry at the commencement of tests. When testing to the requirements
of 4.6.3.6, the track shall remain dry throughout the tests.
e) The wind speed on the track shall not exceed 3 m/s during the tests.
4.6.3.2 Instrumentation
The test bicycle or the test track shall be instrumented to include the following:
a) a calibrated speedometer or tachometer (accurate to within ±5 %) to indicate to the rider the
approximate speed at the commencement of braking;
b) a velocity-recording device (accurate to within ±2 %) to record the velocity at the commencement
of braking;
c) a distance recording system (accurate to within ±1 %) to record the braking distance;
d) a water spray system, to provide wetting of the braking surface, consisting of a water reservoir
connected by tubing to a pair of nozzles at the front wheel and a pair of nozzles at the rear wheel.
A quick-acting on/off valve shall be included for control by the rider. Each nozzle shall provide a
flow of water at ambient temperature of not less than 4 ml/s. Details of the positions and directions
of nozzles for rim brakes, hub brakes, band brakes, disc brakes, and back-pedal brake are given in
Figures 7 to 13;
NOTE Figures 7 and 8 for rim brakes show side-pull callipers but the same arrangements apply to centre-
pull callipers and cantilever brakes.
e) a brake-actuation indicating system to record independently when each lever or pedal is actuated.
4.6.3.3 Mass of bicycle, rider, and instrumentation
The combined mass of the bicycle, the rider, and the instrumentation shall be 100 kg.
When wet condition braking tests are performed, the combined mass can decrease throughout the test
due to water consumption, but it shall not be less than 99 kg at the end of the valid test runs.
Where a manufacturer specifies that their bicycle can carry a mass such that the sum of that mass plus
the mass of the bicycle is in excess of 100 kg (60 kg for young adults) to some value M, apply M as total
weight.
Any extra weight shall be positioned above the rear wheel and in front of the rear axle.
4.6.3.4 Force applied to the brake levers
a) Magnitude and position of force on brake levers
ISO 4210-4:2014(E)
Apply a handgrip force not exceeding 180 N at the point as specified in Figure 5. Check before and after
each series of test runs to verify the lever force.
b) Optional brake-force application device
It is permissible to use a test mechanism to operate the brake lever, and when such a device is used, it
shall meet the requirements of 4.6.3.4 item a) and shall addi
...