ISO INTERNATIONAL STANDARD 8645 First edition 1988-09-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXKAYHAPOAHAR OPFAHM3ALMA O CTAHAAPTM3ALMM Mopeds - Light-alloy wheels -- Test method Cyclomoteurs -- Roues en alliages legers -- Methode d'essai Reference number ISO 8645 : 1988 (E) Not for Resale 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 the right to be represented on that committee. international organizations, govern- collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 8645 was prepared by Technical Committee ISO/TC 22 Road vehicles. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. @ International Organization for Standardization, 1988· Printed in Switzerland rking permitted without license from IHS Not for Resale 1SO 8645 : 1988 (E) INTERNATIONAL STANDARD Mopeds Light-alloy wheels - Test method 1 Scope 4.2 composite construction light-alloy wheel : Wheel of which the rim is made of light-alloy, and the spokes or disc are This International Standard specifies methods for determining made of light-alloy or steel, which are then assembled. the reliability of light-alloy road wheels under normal use stress. Tests 5 2 Field of application The tests to be carried out are the following : This International Standard applies to wheels for mopeds with a) rotation bending fatigue test (dynamic cornering two or three wheels as defined in IS0 3833, of the following fatigue test for three-wheelers) (see clause 6); types : b) radial load durability test (see clause 7); unit construction fight-alloy wheels; c) radial impact resistance test (see clause 8); composite construction light-alloy wheels. d) torsion test (see clause 9); 3References e) air leak test (applicable only to wheels designed and marked for use with tubeless tyres) (see clause 10). ISo 3833, Road vehicles - Types - Terms and definitions. A different wheel shall be used for each test. ISo 5995-1, Moped tyres and rims -- Part 1: Tyres. 6 Rotation bending fatigue test (dynamic 4 Definitions cornering fatigue test for three-wheelers) For the purposes of this International Standard, the following 6.1 Test equipment definitions apply. The test equipment shall be planned to produce a constant 4.1 unit construction light-alloy wheel: Wheel of which bending moment on the centre of the light-alloy wheel which the rim and spokes, or the disc, are manufactured as a single rotates with a constant velocity. An example of such equip- unit. ment is shown in figure 1. Fastening Diso Wheel Loading arm Pivot point EANA Weight Figure 1 -- Model equipment for cornering fatigue test Copyright International Organization for Standardization Not for Resale e from IHS