ISO INTERNATIONAL STANDARD 11486 Second edition 2006-09-01 Motorcycles Methods for setting running resistance on a chassis dynamometer Motocycles Méthodes pour fixer la resistance a I'avancement sur un bancdynamometrique Reference number ISO 11486:2006(E) @ ISO 2006 ISO 11486:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The Iso Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In ISO2006 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 [email protected] Web www.iso.org Published in Switzerland @ ISO 2006 - All rights reserved ISO11486:2006(E) Contents Page Foreword. iv Introductior 1 Scope 2 Normative references 3 Terms and definitions.. 4 Symbols. 5 Test motorcycle, chassis dynamometer and instruments .. 6 Required accuracy of measurements. < 7.1 Requirementforroad. 7.2 Ambient conditions for the road test.. 7.3 Reference speed . 7.4 Specified speed....... 7.5 Coastdown starting speed... 7.6 Coastdown time measurement beginning speed and ending speed.. 7.7 Preparation of test motorcycle..... 7.8 Rider and riding position .. 7.9 Measurement of coastdown time. Data processing... 8.1 Calculation of running resistance force... 8.2 Running resistance curve fitting..... 8.3 Target running resistance force for chassis dynamometer setting ... 8 9 Chassis dynamometer setting derived from on-road coastdown measuremen 9.1 Requirements for the equipment .. 8 9.2 Inertia masssetting.. 9 9.3 Warming up of chassis dynamometer..... 9.4 Adjustment of tyre pressures... 9 9.5 Motorcycle warming up..... 9.6 Proceduresforsettingchassisdynamometer... 9.7 Verification of chassis dynamometer.. 12 10 Chassis dynamometer setting using the running resistance table... 12 10.1 Applicability.. 12 10.2 Requirements for the equipment .... 12 10.3 Setting the running resistance force on the chassis dynamometer 14 10.4 The specified speed for the chassis dynamometer .. 14 10.5 Verification of chassis dynamometer.... 14 Annex A (normative) Motorcycle description... 15 Annex B (normative) Chassis dynamometer and instruments description.. .17 Annex C (informative) Record of coastdown time and chassis dynamometer setting.. .19 Bibliography .22 ion'ghts reserved ili ISO 11486:2006(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 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/lEc Directives, Part 2. 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 poss