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This standard is not equivalent to the Council 93/93/EEC Directive of 29 October 1993 on The Masses and Dimensions of Two or Three-wheel Motor Vehicles (English version).
This standard is redrafted according to the Council 93/93/EEC Directive of 29 October 1993.
This standard has the following main changes with respect to Council 93/93/EEC Directive of 29 October 1993.
——Definition and measuring requirements of dimensions and masses are adopted.
——Limits of maximum dimensions and maximum masses therein are not adopted.
——Some items in ISO 6725:1981 Road Vehicles - Dimensions of Two-wheeled Mopeds and Motorcycles - Terms and Definitions, ISO 9131:1993 Three Wheeled Mopeds and Motorcycles - Dimensions - Vocabulary, ISO 8705:1991 Mopeds - Measuring method for Location of Centre of Gravity and ISO 9130:1989 Motorcycles - Measuring method for Location of Centre of Gravity are added.
——Some items in the forcible inspection items for motorcycles in China, such as steering wheel angle, are added.
This standard replaces GB/T 5373-1994 Measuring Method of Dimensions and Masses Parameter for Motorcycles and Mopeds.
This standard has the following main changes with respect to GB/T 5373-1994:
——The states of vehicle subjecting to dimension parameter measurement are unified as complete vehicle dry mass state.
——Dimension measurement items for light fixtures are deleted.
——The measuring method for ground clearance is specified.
Annex A, Annex B and Annex C of this standard are informative.
This standard was proposed by the National Technical Committee on Automobiles of Standardization Administration of China.
This standard is under the jurisdiction of the National Technical Committee on Automobiles of Standardization Administration of China.
The previous editions of this standard are as follows:
——GB 5373-1985, GB/T 5373-1994.
Measuring Method of Dimensions and Masses Parameter for Motorcycles and Mopeds
1 Scope
This standard specifies the measuring condition, measuring method and value rules relating to the dimensions and masses parameter for motorcycles and mopeds.
This standard is applicable to motorcycles and mopeds.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T 5359.3-1996 Term for Motorcycles and Mopeds - Dimensions of Vehicle with Two Wheels (neq ISO 6725:1981)
GB/T 5359.5-1996 Term for Motorcycles and Mopeds - Mass of Vehicle with Two Wheels (neq ISO 6726:1988)
GB/T 5359.6-1996 Term for Motorcycles and Mopeds - Mass of Vehicle with Three Wheels (neq ISO 9132:1990)
GB/T 5359.7-1996 Term for Motorcycles and Mopeds - Dimensions of Vehicle with Three Wheels
GB/T 8170-1987 Rules for Rounding off of Numerical Values
3 Terms and Definitions
For the purposes of this standard, the terms and definitions given in GB/T 5359.3-1996, GB/T 5359.5-1996, GB/T 5359.6-1996 and GB/T 5359.7-1996 apply.
4 General Measuring Condition
4.1 The vehicle must be clean (without oil stain or soil), equipment shall be complete and tyre pressure shall meet those specified in product technical documents.
4.2 The supporting plane for measuring dimensions shall be horizontal measuring platform or terrazzo floor.
4.3 The vehicle is placed on supporting plane in plumb state, wheels are in the position corresponding to run in a straight line; the doors and windows of right three-wheeled vehicles shall be closed and the windscreen of sidecar for the vehicle with sidecar shall be kept at working position.
4.4 Measuring instruments and devices:
a) Steel tape: with the resolution of 1mm;
b) Angle gauge: with the resolution of 5';
c) Height gauge: with the resolution of 0.5mm;
d) Heavy hammer or square ruler;
e) Three-dimensional coordinate measuring device;
f) Platform balance or electronic balance or vehicle load gauge, with the resolution of 0.2kg;
g) Cushion block;
h) Adjustable level gauge;
i) Suspension locking tool.
5 Measuring Method of Dimension Parameter
5.1 Measuring condition
5.1.1 The vehicle is in a three-dimensional orthogonal system for the purpose of determining its measuring basis plane and longitudinal median plane.
5.1.2 During measurement, the vehicle is kept at complete vehicle dry mass state.
5.1.3 The site and road for measuring turning circle diameter, turning clearance circle diameters and wheel rolling radius shall be clean, flat and dry concrete or asphalt floor.
5.2 Measuring items and requirements
5.2.1 Length dimensions are detailed in Table 1.
Table 1 Length Dimensions
Code Item Requirements Remarks
L Vehicle length Measure the distance between two vertical planes perpendicular to the longitudinal median plane of the vehicle and tangent to the front and rear of the vehicle, respectively. Except for optional components a and spare tyre, all components of the vehicle and any fixed component b towards the front or rear must be included within those two planes. See Figures 1~3
L1 Wheel base Front and rear axles Measure the distance between two vertical planes passing through the centers of two wheels and perpendicular to the longitudinal median plane of the vehicle.
L2 Front and side axles
L3 Castor Measure the distance between the crosspoint of steering column axis with the supporting plane and the center plumb line of the front wheel.
L4 Front overhang >Measure the distance between two vertical planes passing through the center of the front wheel and the foremost point of the contacting vehicle and perpendicular to the longitudinal median plane of the vehicle. Besides optional components a, any fixed component b towards the front shall also be included. See Figure 7
L5 Rear overhang Measure the distance between two vertical planes passing through the center of the rear wheel and the rearmost point of the contacting vehicle and perpendicular to the longitudinal median plane of the vehicle. Besides optional components a and spare tyre, any fixed component b towards the rear shall also be included, See Figures 1~3
L6 Distance between ground clearance point and rear wheel axis Measure the distance between ground clearance point and rear wheel axis. If there is more than one minimum ground clearance point, the point closing to the central position of two wheels shall be taken for making measurement. See Figures 1~3
L7 Internal length of body Measure the maximum dimension in length direction of the internal of body (excluding internal protrusion). See Figure 3
L8 Maximum usable length of chassis behind cab Measure the distance between two vertical planes perpendicular to the longitudinal median plane of the vehicle, i.e. the foremost of the installed cargo box and the rearmost of the chassis. See Figure 3
a Optional components - the components c (different from the basic type motorcycles provided by the manufacturer) assembled for the matching or selecting by customers.
b Fixed components - the accessories c (in basic type motorcycles provided by the manufacturer) configured according to vehicle design criteria.
c Accessories - disassemble parts and components [e.g. guide hood, windscreen, bumper, basket, front (rear) rack and rear boot] playing supporting role and having no influence on the normal running of motorcycle.
5.2.2 Width dimensions are detailed in Table 2.
Table 2 Width Dimensions
Code Item Requirements Remarks
B Vehicle width Measure the distance between two planes parallel to the longitudinal median plane of the vehicle and tangent to the vehicle on either side of that plane. Except for optional components a and rearview mirror, all components of the vehicle and any fixed component b extending sideways must be included within those two planes. See Figures 1~3
B1 Track a) Right three-wheeled vehicle: measure the sum of distances from the centers of two side wheels to the longitudinal median plane, (i.e. by and bz), of the vehicle.
b) Vehicle with sidecar: measure the distance from the center of sidecar to the longitudinal median plane of the vehicle. See Figures 2~3
B2 (b2-b1) Toe-in a) Toe-in of right three-wheeled vehicle: the horizontal diameter end points of external contour line for both wheel rims at the same axle are the peaks of isosceles trapezoid; measure the difference between the lengths of the front and rear bottoms of the trapezoid (b1, b2);
b) Toe-in of vehicle with sidecar: the horizontal diameter end points of external contour line for wheel rims and the vertical line of longitudinal median plane form a trapezoid; measure the difference between the lengths of the front and rear bottoms of the trapezoid (b1, b2); See Figure 4
B3 Internal width of body Measure the maximum dimension in width direction of the internal of body (excluding internal protrusion). See Figure 3
a Optional components - the components c (different from the basic type motorcycles provided by the manufacturer) assembled for the matching or selecting by customers.
b Fixed components - the accessories c (in basic type motorcycles provided by the manufacturer) configured according to vehicle design criteria.
c Accessories - disassemble parts and components [e.g. guide hood, windscreen, bumper, basket, front (rear) rack and rear boot] playing supporting role and having no influence on the normal running of motorcycle.
5.2.3 Height dimensions are detailed in Table 3.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Measuring Condition
5 Measuring Method of Dimension Parameter
6 Measuring Method of Mass Parameter
7 Value Rules of Measuring Result and Measuring Data
Annex A (Informative) Measurement Record List of Vehicle Dimension Parameter
Annex B (Informative) Measurement Record List of Vehicle Mass Parameter
Annex C (Informative) Measurement Record List of Height of Center of Vehicle Mass
