EN 30326-1:1994/A2:2011
(Amendment)Mechanical vibration - Laboratory method for evaluating vehicle seat vibration - Part 1: Basic requirements - Amendment 2 (ISO 10326-1:1992/Amd 2:2011)
Mechanical vibration - Laboratory method for evaluating vehicle seat vibration - Part 1: Basic requirements - Amendment 2 (ISO 10326-1:1992/Amd 2:2011)
2011-04-12 EMA: draft for // final vote received in ISO/CS (see notification of 2011-04-11 in dataservice).
2013: Originator of XML version: first setup pilot of CCMC in 2012
Mechanische Schwingungen - Laborverfahren zur Bewertung der Schwingungen von Fahrzeugsitzen - Teil 1: Grundlegende Anforderungen - Änderung 2 (ISO 10326-1:1992/Amd 2:2011)
Vibrations mécaniques - Méthode en laboratoire pour l'évaluation des vibrations du siège de véhicule - Partie 1: Exigences de base - Amendement 2 (ISO 10326-1:1992/Amd 2:2011)
Mehanske vibracije - Laboratorijska metoda za ovrednotenje vibracij sedežev vozil - 1. del: Osnovne zahteve - Dopolnilo 2 (ISO 10326-1:1992/DAM 2:2010)
Ta del standarda ISO 10326 določa osnovne zahteve za laboratorijsko preskušanje prenosa vibracij prek sedeža vozila na uporabnika. Te metode za merjenje in analizo bodo omogočile primerjavo rezultatov preskusov iz različnih laboratorijev. Standard določa preskusno metodo, merilne zahteve, metodo za ovrednotenje merjenja in način za sporočanje rezultata preskusa. Ta del standarda ISO 10326 se uporablja za posebne laboratorijske preskuse sedežev za vrednotenje prenosa vibracij na uporabnika katere koli vrste sedeža, ki se uporablja v vozilih in mobilnih terenskih strojih. Standardi uporabe za posebna vozila naj bi se sklicevali na ta del standarda ISO 10326 pri določanju preskusne vhodne vibracije, ki je običajna za vibracijske značilnosti vrste ali razreda vozila oziroma stroja, v katerega se bo namestil sedež.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 30326-1:2000/oprA2:2010
01-september-2010
Mehanske vibracije - Laboratorijska metoda za ovrednotenje vibracij sedežev vozil
- 1. del: Osnovne zahteve - Dopolnilo 2 (ISO 10326-1:1992/DAM 2:2010)
Mechanical vibration - Laboratory method for evaluating vehicle seat vibration - Part 1:
Basic requirements - Amendment 2 (ISO 10326-1:1992/DAM 2:2010)
Mechanische Schwingungen - Laborverfahren zur Bewertung der Schwingungen von
Fahrzeugsitzen - Grundlegende Anforderungen (ISO 10326-1:1992/DAM 2:2010)
Vibrations mécaniques - Méthode en laboratoire pour l'évaluation des vibrations du siège
de véhicule - Partie 1: Exigences de base - Amendement 2 (ISO 10326-1:1992/DAM
2:2010)
Ta slovenski standard je istoveten z: EN 30326-1:1994/prA2
ICS:
13.160 Vpliv vibracij in udarcev na Vibration and shock with
ljudi respect to human beings
43.020 Cestna vozila na splošno Road vehicles in general
45.020 Železniška tehnika na Railway engineering in
splošno general
SIST EN 30326-1:2000/oprA2:2010 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 30326-1:2000/oprA2:2010
SIST EN 30326-1:2000/oprA2:2010
EUROPEAN STANDARD
DRAFT
EN 30326-1:1994
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA2
June 2010
ICS 65.060.10; 53.100; 43.020; 13.160
English Version
Mechanical vibration - Laboratory method for evaluating vehicle
seat vibration - Part 1: Basic requirements - Amendment 2 (ISO
10326-1:1992/DAM 2:2010)
Vibrations mécaniques - Méthode en laboratoire pour
l'évaluation des vibrations du siège de véhicule - Partie 1:
Exigences de base - Amendement 2 (ISO 10326-
1:1992/DAM 2:2010)
This draft amendment is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee CEN/TC 231.
This draft amendment A2, if approved, will modify the European Standard EN 30326-1:1994. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
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. EN 30326-1:1994/prA2:2010: E
worldwide for CEN national Members.
SIST EN 30326-1:2000/oprA2:2010
EN 30326-1:1994/prA2:2010 (E)
Contents Page
Foreword .3
SIST EN 30326-1:2000/oprA2:2010
EN 30326-1:1994/prA2:2010 (E)
Foreword
This document (EN 30326-1:1994/prA2:2010) has been prepared by Technical Committee CEN/TC 231
“Mechanical vibration and shock", the secretariat of which is held by DIN, in collaboration with Technical
Committee ISO/TC 108 "Mechanical vibration, shock and condition monitoring".
This document is currently submitted to the parallel Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
SIST EN 30326-1:2000/oprA2:2010
SIST EN 30326-1:2000/oprA2:2010
DRAFT AMENDMENT ISO 10326-1:1992/DAmd 2
ISO/TC 108/SC 4 Secretariat: DIN
Voting begins on: Voting terminates on:
2010-06-10 2010-11-10
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Mechanical vibration — Laboratory method for evaluating
vehicle seat vibration —
Part 1:
Basic requirements
AMENDMENT 2
Vibrations mécaniques — Méthode en laboratoire pour l'évaluation des vibrations du siège de véhicule —
Partie 1: Exigences de base
AMENDEMENT 2
ICS 13.160; 43.020; 53.100; 65.060.10
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the European Committee for Standardization (CEN), and processed
under the CEN-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.
In accordance with the provisions of Council Resolution 15/1993 this document is circulated in
the English language only.
Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué
en version anglaise seulement.
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, 2010
SIST EN 30326-1:2000/oprA2:2010
ISO 10326-1:1992/DAmd 2
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©
ii ISO 2010 – All rights reserved
SIST EN 30326-1:2000/oprA2:2010
ISO 10326-1:1992/DAmd 2:2010
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.
Amendment 2 to ISO 10326-1:1992 was prepared by the European Committee for Standardization (CEN)
Technical Committee CEN/TC 231, Mechanical vibration and shock, in collaboration with Technical
Committee ISO/TC 108, Mechanical vibration, shock and condition monitoring, Subcommittee SC 4, Human
exposure to mechanical vibration and shock, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
SIST EN 30326-1:2000/oprA2:2010
SIST EN 30326-1:2000/oprA2:2010
ISO 10326-1:1992/DAmd 2:2010
Mechanical vibration — Laboratory method for evaluating
vehicle seat vibration —
Part 1:
Basic requirements
AMENDMENT 2
NOTE The following changes to ISO 10326-1:1992 apply together with the changes given in Amendment 1:2007.
Page iii, Introduction
Add the following third paragraph:
The seat constitutes the last stage of suspension before the driver. To be efficient at attenuating the
vibration, the suspension seat should be chosen according to the dynamic characteristics of the vehicle.
Any performance criteria provided should be set in accordance with what is attainable using best design
practice. Such criteria will not necessarily ensure the complete protection of the operator against risks
associated with exposure to vibration and shock which are generally believed to be risk of spinal injury.
Page 1, Clause 2, Normative references
Add the following reference:
ISO 13090-1, Mechanical vibration and shock — Guidance on safety aspects of tests and experiments
with people — Part 1: Exposure to whole-body mechanical vibration and repeated shock
Page 3, Clause 6, Safety requirements
Replace the first paragraph with the following:
The guidance on safety requirements with regard to tests in which people are exposed to mechanical
vibration and repeated shock as given in ISO 13090-1 shall be followed.
Page 4, subclause 7.1.2, Run-in periods for suspension seats
After the subclause add the following new subclauses:
7.1.3 Measurement of suspension travel and adjustment to weight of test person
Differences in the setting of ride height when testing suspended seats can have significant effects on test
results. Therefore the test standard should include guidance on how the height should be adjusted, such
as:
⎯ with seats where the suspension stroke available is affected by the adjustment of the seat height or
by the test person weight, including where the height adjustment is integrated into the suspension
SIST EN 30326-1:2000/oprA2:2010
ISO 10326-1:1992/DAmd 2:2010
travel, testing shall be performed in the lowest position that provides the full working suspension
stroke as specified by the seat manufacturer;
⎯ with seats where the suspension stroke available is unaffected by the adjustment of the seat height
or by test person weight, testing shall be performed with the seat adjusted to the centre of stroke.
Determination of the ride position requires location of the upper and the lower ends of travel for the
suspension:
a) For suspensions with manual weight adjustment, the following procedure is recommended:
The upper end of travel should be determined with no load on the seat, and with the suspension
weight adjustment set approximately to suit the heavy test person (e.g. 100 kg).
The lower end of travel, including compression of the lower bump stop, should be determined with a
load of 1500 N, and with the suspension weight adjustment set approximately to suit the light test
person (e.g. 55 kg).
b) For suspensions with automatic weight adjustment, which usually are air suspensions, the following
procedure is recommended:
To determine the upper end of travel, a dynamic test is needed. Starting with a heavy (e.g. 100 kg)
test person sitting on the seat, the height should be adjusted to mid-ride (in cases where the height
adjustment is integrated into the suspension travel, adjust to the upmost mid-ride position). The test
person rises from the seat very quickly, so that the suspension is compressed into the upper end-
stop. The highest position measured gives the upper end of travel. In this context, mid-ride means
the mid-point of the working stroke.
To d
...
SLOVENSKI STANDARD
01-april-2012
Mehanske vibracije - Laboratorijska metoda za ovrednotenje vibracij sedežev vozil
- 1. del: Osnovne zahteve - Dopolnilo 2 (ISO 10326-1:1992/DAM 2:2010)
Mechanical vibration - Laboratory method for evaluating vehicle seat vibration - Part 1:
Basic requirements - Amendment 2 (ISO 10326-1:1992/DAM 2:2010)
Mechanische Schwingungen - Laborverfahren zur Bewertung der Schwingungen von
Fahrzeugsitzen - Grundlegende Anforderungen (ISO 10326-1:1992/DAM 2:2010)
Vibrations mécaniques - Méthode en laboratoire pour l'évaluation des vibrations du siège
de véhicule - Partie 1: Exigences de base - Amendement 2 (ISO 10326-1:1992/DAM
2:2010)
Ta slovenski standard je istoveten z: EN 30326-1:1994/A2:2011
ICS:
13.160 Vpliv vibracij in udarcev na Vibration and shock with
ljudi respect to human beings
43.020 Cestna vozila na splošno Road vehicles in general
45.020 Železniška tehnika na Railway engineering in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 30326-1:1994/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2011
ICS 65.060.10; 53.100; 43.020; 13.160
English Version
Mechanical vibration - Laboratory method for evaluating vehicle
seat vibration - Part 1: Basic requirements - Amendment 2 (ISO
10326-1:1992/Amd 2:2011)
Vibrations mécaniques - Méthode en laboratoire pour Mechanische Schwingungen - Laborverfahren zur
l'évaluation des vibrations du siège de véhicule - Partie 1: Bewertung der Schwingungen von Fahrzeugsitzen - Teil 1:
Exigences de base - Amendement 2 (ISO 10326- Grundlegende Anforderungen - Änderung 2 (ISO 10326-
1:1992/Amd 2:2011) 1:1992/Amd 2:2011)
This amendment A2 modifies the European Standard EN 30326-1:1994; it was approved by CEN on 14 December 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant 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 amendment 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, 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
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 30326-1:1994/A2:2011: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive EU Directive 2006/42/EC .4
Foreword
This document (EN 30326-1:1994/A2:2011) has been prepared by Technical Committee CEN/TC 231
“Mechanical vibration and shock", the secretariat of which is held by DIN, in collaboration with Technical
Committee ISO/TC 108 "Mechanical vibration, shock and condition monitoring".
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 June 2012, and conflicting national standards shall be withdrawn at
the latest by June 2012.
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 has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide a means of conforming to Essential Requirements of the
New Approach Directive 2006/42/EC on machinery.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the normative clauses of
this standard confers, within the limits of the scope of this standard, a presumption of conformity with the
relevant Essential Requirements of that Directive and associated EFTA regulations.
WARNING — Other requirements and other EU Directives may be applicable to the products falling
within the scope of this Standard.
INTERNATIONAL ISO
STANDARD 10326-1
First edition
1992-11-15
AMENDMENT 2
2011-12-15
Mechanical vibration — Laboratory
method for evaluating vehicle seat
vibration —
Part 1:
Basic requirements
AMENDMENT 2
Vibrations mécaniques — Méthode en laboratoire pour l'évaluation des
vibrations du siège de véhicule —
Partie 1: Exigences de base
AMENDEMENT 2
Reference number
ISO 10326-1:1992/Amd.2:2011(E)
©
ISO 2011
ISO 10326-1:1992/Amd.2:2011(E)
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
ISO 10326-1:1992/Amd.2:2011(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.
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.
Amendment 2 to ISO 10326-1:1992 was prepared by the European Committee for Standardization (CEN)
Technical Committee CEN/TC 231, Mechanical vibration and shock, in collaboration with Technical
Committee ISO/TC 108, Mechanical vibration, shock and condition monitoring, Subcommittee SC 4, Human
exposure to mechanical vibration and shock, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
ISO 10326-1:1992/Amd.2:2011(E)
Mechanical vibration — Laboratory method for evaluating
vehicle seat vibration —
Part 1:
Basic requirements
AMENDMENT 2
Page ii, Foreword
Add the following information at the end of the parts list:
The following part is planned:
Part 3: Specification of dynamic dummies for z-axis motion
Page iii, Introduction
Add the following paragraph:
The seat constitutes the last stage of suspension before the driver. To be efficient at attenuating the
vibration, the suspension seat should be chosen according to the dynamic characteristics of the vehicle.
Any performance criteria provided should be set in accordance with what is attainable using best design
practice. Such criteria do not necessarily ensure the complete protection of the operator against risks
associated with exposure to vibration and shock which are generally believed to be risk of spinal injury.
Page 1, Clause 2
Add the following reference:
ISO 13090-1, Mechanical vibration and shock — Guidance on safety aspects of tests and experiments
with people — Part 1: Exposure to whole-body mechanical vibration and repeated shock
Page 3, Clause 6
Replace the first paragraph with the following:
The guidance on safety requirements with regard to tests in which people are exposed to mechanical
vibration and repeated shock as given in ISO 13090-1 shall be followed.
Page 4, 7.1.2
After 7.1.2, add the following subclauses.
7.1.3 Measurement of suspension travel and adjustment to weight of test person
Differences in the setting of ride height when testing suspended seats can have significant effects on test
results. Therefore the test standard should include guidance on how the height should be adjusted, such
as:
ISO 10326-1:1992/Amd.2:2011(E)
with seats where the suspension stroke available is affected by the adjustment of the seat height or
by the test person weight, including where the height adjustment is integrated into the suspension
travel, testing shall be performed in the lowest position that provides the full working suspension
stroke as specified by the seat manufacturer;
with seats where the suspension stroke available is unaffected by the adjustment of the seat height
or by test person weight, testing shall be performed with the seat adjusted to the centre of stroke.
Determination of the ride position requires location of the upper and the lower ends of travel for the
suspension, as follows.
a) For suspensions with manual weight adjustment, the following procedure is recommended.
The upper end of travel should be determined with no load on the seat, and with the suspension
weight adjustment set approximately to suit the heavy test person (e.g. 100 kg).
The lower end of travel, including compression of the lower bump stop, should be determined with a
load of 1 500 N, and with the suspension weight adjustment set approximately to suit the light test
person (e.g. 55 kg).
b) For suspensions with automatic weight adjustment, which usually are air suspensions, the following
procedure is recommended.
To determine the upper end of travel, a dynamic test is needed. Starting with a heavy (e.g. 100 kg)
test person sitting on the seat, the height should be adjusted to mid-ride (in cases where the height
adjustment is integrated into the suspension travel, adjust to the upmost mid-ride position). The test
person rises from the seat very quickly, so that the suspension is compressed into the upper end-
stop. The highest position measured gives the upper end of travel. In this context, mid-ride means
the mid-point of the working stroke.
To determine the lower end of travel, first exhaust the suspension completely so that the suspension
is just resting on the lower end-stop. If necessary add weight to the seat to bring the suspension into
contact with the end-stop. Then compress the suspension further with a force of 1 000 N (or load with
a mass of 100 kg). This lowest position gives the lower end of travel.
NOTE 8 For a suspension that cannot be measured in this way, an alternative method that has the same basic
objectives should be devised.
The following information should be included in the report:
full working stroke (as given by the manufacturer);
measured working stroke (suspension without integral height adjustment) or full measured
suspension travel (suspension with integral height adjustment);
position used during the vibration test (distance above lower end of travel);
available height adjustment (suspension with integral height adjustment) being the full measured
suspension travel less the working stroke as specified by the manufacturer.
NOTE 9 Use of a continuous visual indication of ride height position for the test controller or engineer can aid
reproducibility by enabling any variations in ride height to be corrected, e.g. resulting from changing damper
temperature. Such indications can be elect
...
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