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GB/T 3564-1993 English PDF (GBT3564-1993)

GB/T 3564-1993 English PDF (GBT3564-1993)

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GB/T 3564-1993: Classification and names of components of bicycles, and basic technology

This standard specifies the classification, names, main terms of bicycle components. This standard applies to all types of bicycles.
GB/T 3564-1993
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
UDC 629.118.3: 629.11.01
Y 14
GB/T 3564-93
Replacing GB/T 3564-83
Classification and names of components of bicycles, and
basic technology
ISSUED ON: JULY 21, 1993
IMPLEMENTED ON: MARCH 01, 1994
Issued by: State Bureau of Technical Supervision
Table of Contents
1 Subject content and scope of application ... 3
2 Normative references ... 3
3 Classification and name of components ... 3
4 Main terms for bicycles ... 5
Additional information ... 8
Classification and names of components of bicycles, and
basic technology
This standard refers to AND adopts international standard ISO 8090-1990 "Cycles - Terminology".
1 Subject content and scope of application
This standard specifies the classification, names, main terms of bicycle components. This standard applies to all types of bicycles.
2 Normative references
GB 3565 Safety requirements for bicycles
3 Classification and name of components
3.1 Classification of components
The components of a bicycle are divided into two main categories, namely basic components and accessory components.
3.2 Name of component
3.2.1 Basic components
The basic components are:
Frame assembly, front fork assembly, handles assembly, saddle assembly, bottom bracket assembly, pedal assembly, chain assembly, flywheel assembly, front wheel assembly, rear wheel assembly, front derailleur assembly, rear derailleur assembly, front brake assembly, rear brake assembly, chain guard assembly, bell assembly, reflector parts.
The main types of basic components are as follows:
Other accessories: maintenance tools, various instruments.
4 Main terms for bicycles
4.1 Central reference plane P
A plane, which is formed by the center lines of the front tube, top tube, riser, down tube. 4.2 Chain line L
The theoretical straight line, that bisects the freewheel and sprocket AND is parallel to the central datum plane.
4.3 Chain line distance b
The distance from the chain line to the center datum.
4.4 Frame size h1
The distance from the center of the middle joint to the top of the rear joint or riser. 4.5 Bottom bracket displacement h2
The height difference between the center of the middle joint and the center of the front and rear axles, which is positive when going down and negative when going up. 4.6 Wheel base l1
The distance between the center of the front axle and the center of the rear axle. 4.7Offset l2
The distance from the center of the front axle to the centerline of the front fork riser.

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