SIST-TP CEN/TR 16043:2011

Bicycles - Replies to requests for interpretation of EN 14766

The purpose of this Technical Report is to provide replies to requests for interpretations of EN 14766:2005, Mountain-bicycles - Safety requirements and test methods.

Fahrräder - Antworten auf Anfragen für die Auslegung der EN 14766

Ziel dieses Technischen Berichts ist es, Antworten auf Anfragen für die Auslegung der EN 14766:2005, Geländefahrräder (Mountainbikes) — Sicherheitstechnische Anforderungen und Prüfverfahren zu liefern.

Bicyclettes - Réponses aux demandes d’interprétation sur l’EN 14766

Kolesa - Odgovori na zahteve po interpretaciji standarda EN 14766

Namen tega tehničnega poročila je navesti odgovore na zahteve po interpretaciji EN 14766:2005.

General Information

• Status: Published
• Publication Date: 07-Apr-2011
• ICS: 43.150 - Cycles
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 30-Mar-2011
• Due Date: 04-Jun-2011
• Completion Date: 08-Apr-2011
• Ref Project: CEN/TR 16043:2010 - Bicycles - Replies to requests for interpretation of EN 14766

Overview

SIST-TP CEN/TR 16043:2011 is a Technical Report published by the European Committee for Standardization (CEN) that provides authoritative replies to requests for interpretations of the EN 14766:2005 standard. EN 14766 defines the safety requirements and test methods applicable to mountain bicycles. This document clarifies specific clauses within EN 14766, ensuring consistent and correct application of the standard across the industry.

Developed by CEN Technical Committee 333, which covers cycles, the report addresses technical questions raised by national bodies within CEN member states. It offers both interpretations of existing clauses and no-action decisions when the standard is deemed sufficiently clear. While interpretations guide compliance, they do not override the original text of EN 14766.

Key Topics

• Security of Screws (Clause 4.3.1): Defines acceptable locking devices to prevent screws from becoming unintentionally unlocked. Examples include thread locking compounds and other mechanisms, emphasizing practical safety for suspension systems, brake mechanisms, saddles, and more.

• Brake-Block Security Test (Clause 4.6.4): Confirms the importance of maintaining brake-pad release after backward movement with brakes applied. Testing allows some wheel skidding and can be conducted with test machines to simulate realistic conditions.

• Brake Performance (Clauses 4.6.7.5.2.6 & 4.6.7.5.2.7): Addresses brake clamping forces during dry and wet testing, clarifying that greater force can be used to prevent wheel skidding under wet conditions without an upper limit.

• Handlebar Plugs (Clause 4.7.2): Interpretation permits modifying plugs, such as drilling holes, to facilitate compliance with force application tests, enhancing practical testability.

• Quick-Release Devices (Clause 4.10.5.2): Clarifies that recommendations for secondary retention devices apply primarily when such devices are absent, ensuring wheel security under various configurations.

• Mudguard Test Methods (Clause 4.12.3): Specifies that radial force tests must be applied relative to the actual mudguard end, excluding any attached mud flaps, which must remain installed during testing.

• Test Method Clarifications: Includes guidance on saddle clamping system testing, handlebar torque applications, and load points on rims for static force testing.

Applications

SIST-TP CEN/TR 16043:2011 is indispensable for manufacturers, quality controllers, and regulatory bodies involved with mountain bicycles. It helps:

• Ensure Consistent Safety Compliance: By interpreting ambiguous clauses, manufacturers can standardize safety testing processes for mountain bike components such as brakes, handlebars, and quick-release mechanisms.

• Guide Product Development: Design engineers benefit from clarified requirements for mounting devices, brake systems, and component security, enabling safer and more reliable bicycle models.

• Improve Testing Accuracy: Testing facilities gain insights on valid test procedures, including acceptable use of test machines for brake security and force application points for rims and mudguards.

• Inform Regulatory Decisions: National standards organizations rely on these interpretations to harmonize enforcement strategies and provide precise guidance for conformity assessment.

Related Standards

This Technical Report references several standards related to bicycle safety and testing, extending its relevance across bicycle categories:

• EN 14766:2005 – Mountain-bicycles: Safety requirements and test methods (primary focus).

• EN 14764 – City and trekking bicycles: Safety requirements and test methods.

• EN 14765 – Bicycles for young children: Safety requirements and test methods.

• EN 14781 – Racing bicycles: Safety requirements and test methods.

Interpretations in CEN/TR 16043 also apply, where relevant, to corresponding clauses in these linked standards, providing a cohesive framework for bicycle safety assessment across different bicycle types.

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Keywords: SIST-TP CEN/TR 16043:2011, EN 14766 interpretation, mountain bicycle safety, bicycle testing methods, brake security test, quick-release device standards, handlebar plug test, mudguard radial force, bicycle safety requirements, CEN Technical Committee 333, European bicycle standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2011
Kolesa - Odgovori na zahteve po interpretaciji standarda EN 14766
Bicycles - Replies to requests for interpretation of EN 14766
Fahrräder - Antworten auf Anfragen für die Auslegung der EN 14766
Bicyclettes - Réponses aux demandes d’interprétation sur l’EN 14766
Ta slovenski standard je istoveten z: CEN/TR 16043:2010
ICS:
43.150 Kolesa Cycles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT
CEN/TR 16043
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
September 2010
ICS 43.150
English Version
Bicycles - Replies to requests for interpretation of EN 14766
Bicyclettes - Réponses aux demandes d'interprétation sur Fahrräder - Antworten auf Anfragen für die Auslegung der
l'EN 14766 EN 14766
This Technical Report was approved by CEN on 29 May 2010. It has been drawn up by the Technical Committee CEN/TC 333.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16043:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction .4
1 Scope .6
2 Agreed interpretations and no action decisions .6
2.1 Clause 4.3.1 Security of screws (interpretation) .6
2.2 Clause 4.6.4 Brake-block security test (no action) .6
2.3 Clause 4.6.7.5.2.6 and 4.6.7.5.2.7 Dry and wet brake performance (no action) .7
2.4 Clause 4.7.2 Handlebar plugs (interpretation) .7
2.5 Clause 4.7.6.4.2 Test method (no action) .8
2.6 Clause 4.10.3.1 Requirement (no action) .8
2.7 Clause 4.10.5.2 Quick-release devices (interpretation) .8
2.8 Clause 4.12.3 Stage 2: Test method – Radial force (interpretation) .9
2.9 Clause 4.14.7.1 General (no action) .9
2.10 Clause 4.14.7.3 Test method (no action) .9
Bibliography . 11

Foreword
This document (CEN/TR 16043:2010) has been prepared by Technical Committee CEN/TC 333 “Cycles”, the
secretariat of which is held by UNI.
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.
Introduction
This Technical Report contains replies to requests for interpretations with regard to the understanding of
clauses in EN 14766:2005. The replies concern those requests which have resulted in an interpretation, or a
decision that no action is required as the standard is sufficiently clear.
An interpretation does not have the same status as the text of the standard, nor can it overrule the text of the
standard. However, following an interpretation should give assurance that the relevant clause of the standard
has been correctly applied. An interpretation shall only be regarded as a clarification of the meaning of the
standard.
Requests for interpretation
Requests for interpretations may be submitted by a CEN member body through its national committee or by a
CEN/TC 333 liaison (but not directly by an individual or a company) − in accordance with the interpretation
protocols agreed by CEN/TC 333 and resumed in Doc. CEN/TC 333 N 182. The requests are then channelled
to the relevant TC 333 working party which will deal with the request.
A request for an interpretation may lead to:
a) An interpretation of the standard
This should reflect a reasonable interpretation of how the standard should be used, taking into account:
1) the wording of the standard;
2) the rationale of the standard;
3) the history of the standard.
b) A no action decision
This is applicable when it is agreed that the standard appropriately specifies how a cycle or a component shall
be assessed.
c) A proposal for an amendment of the standard
This is applicable when it is agreed that the standard is deficient in some way.
NOTE The interpretations and no-action decisions are published in this Technical Report, which will be updated on a
regular basis.
Proposals for amendments will be progressed as new work item proposals in accordance with CEN rules.
Answers to requests for interpretations
Since requests for interpretations are submitted through a CEN member body, it is assumed that the member
body will keep itself informed about decisions concerning the request and its progress and will itself inform the
originator of the request as appropriate.
Disclaimer
The interpretations have been derived by the Interpretation Panel Group. The information contained
herein is for guidance only and does not reflect the formal approval by CEN or CEN member bodies. It
should be noted that the interpretations are neither part of any standard nor have been referenced in
the Official Journal of the European Union.
1 Scope
The purpose of this Technical Report is to provide replies to requests for interpretations of EN 14766:2005,
Mountain-bicycles ― Safety requirements and test methods.
2 Agreed interpretations and no action decisions
2.1 Clause 4.3.1 Security of screws (interpretation)
Question
According to the text, locking devices are required for the following:
 suspe
...