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Position: Chinese Standard in English/GB 3565-2005
GB 3565-2005   Safety requirements for bicycles (English Version)
Standard No.: GB 3565-2005 Status:to be abolished remind me the status change

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Language:English File Format:PDF
Word Count: 11000 words Price(USD):270.0 remind me the price change

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Implemented on:2005-12-1 Delivery: via email in 1 business day
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Standard No.: GB 3565-2005
English Name: Safety requirements for bicycles
Chinese Name: 自行车安全要求
Chinese Classification: Y14    Bicycle
Professional Classification: GB    National Standard
Issued by: SAC, AQSIQ
Issued on: 2005-5-17
Implemented on: 2005-12-1
Status: to be abolished
Superseded by:GB 3565.2-2022 Safety requirements for bicycles—Part 2:Requirements for city and trekking, young adult, mountain and racing bicycles
Superseded on:2023-10-1
Abolished on:2023-10-01
Superseding:GB 3565-1993 Safety requirements for bicycles
Language: English
File Format: PDF
Word Count: 11000 words
Price(USD): 270.0
Delivery: via email in 1 business day
Clause 4, Clause 5; 6.2, 6.5 and 6.6 of Clause 6; Clause 7; 8.2 of Clause 8; 9.3 of Clause 9; 11.2 of Clause 11; 12.2 and 12.6 of Clause 12; Clause 14, Clause 15, Clause 17 and Clause 18 of this standard are mandatory; and the rest are recommendatory. This standard is identical with International Standard ISO 4210:1996 "Cycles — Safety Requirements for Bicycles" (Fourth Edition). For the purposes of this standard, the following editorial changes have also been made on ISO 4210:1996: for example, the section numbers of ISO 4210:1996 are deleted; ISO standards referenced in ISO 4210:1996 are changed to corresponding professional standards of bicycle parts in China, the technical provisions of which are equivalent to the ISO standards referenced. In producing this standard, the aim has been to ensure that bicycles manufactured in compliance with it will be as safe as is practically possible. The tests are designed to ensure the strength and durability of individual parts as well as of the bicycle as a whole, demanding high quality throughout and consideration of safety aspects from the design stage onwards. This standard cancels and replaces GB 3565-1993 (idt ISO 4210:1989, the third edition), the following technical deviations have been made with respect to the GB 3565-1993 (the previous edition). — Enhance brake performance requirements and test methods; — Add requirements for wheel quick-release mechanisms; — Enhance requirements for chainguards to cover multi-chainwheel assemblies; — Add new requirements for fatigue testing of handlebar assemblies, front forks, pedal crank assemblies and saddle pillars. The scope of this standard limited to safety considerations, and has specifically avoided standardization of components (dimensions). The Annex A and Annex B of this standard are for informative only. This standard was proposed by China National Light Industry Council. This standard was prepared by National Technical Committee on Bicycle of Standardization Administration of China. The previous editions of the standard replaced by this standard are as follows: — GB 3565-1983, GB 3565-1993. Safety Requirements for Bicycles General 1 Scope This standard specifies safety and performance requirements for the design, assembly and testing of bicycles and sub-assemblies, and lays down guidelines for instructions on the use and care of bicycles. This standard is applicable to bicycles intended for use on public roads, and on which the saddle can be adjusted to provide a saddle height of 635 mm or more. This standard does not apply to specialized types of bicycle such as tradesmen’s delivery bicycles, tandems, toy bicycles and bicycles designed and equipped for use in sanctioned competitive events. 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. QB/T 1716-1993 Cycle Chains QB/T 1723-1993 Bells for Bicycles QB 2191-1995 Cycle reflectors 3 Terms and Definitions For the purpose of this standard, the following terms and definitions apply. 3.1 cycle Any vehicle that has at least two wheels and is propelled solely by the muscular energy of the person on that vehicle, in particular by means of pedals 3.2 bicycle Two-wheeled cycle 3.3 delivery bicycle Bicycle designed for the primary purpose of carrying goods 3.4 tandem Bicycle with saddles for two or more riders, one behind the other 3.5 saddle height Dimension from the ground plane to the top of the saddle, measured in the centre of the seating area normal to the ground plane when the bicycle is upright 3.6 braking distance Distance travelled by a bicycle between the commencement of braking (3.7) and the point at which the bicycle comes to rest 3.7 commencement of braking Point on the test track at which the brake actuating mechanism is moved from its rest position. In tests with two brakes, this point is determined by the first mechanism to operate 3.8 gear development Distance travelled by a bicycle during one revolution of the pedal cranks 3.9 exposed protrusion Protrusion that can be contacted by the central 75 mm of the lateral surface of a cylinder 250 mm long and 83 mm in diameter (simulating a limb), see Figure 1 Dimensions in millimeters Figure 1 Exposed Protrusion Test Cylinder 3.10 (pedal) tread surface Surface of a pedal that is presented to the underside of the foot, the design of which incorporates a slip-resistant characteristic 3.11 ferrous component Component composed of structural members made entirely from ferrous materials excluding any jointing media such as brazing materials or adhesives 3.12 non-ferrous component Component composed of structural members made entirely from non-ferrous materials excluding any jointing media such as adhesives Note: For the purposes of the choice of fatigue test forces, any component made from a mixture of ferrous and non-ferrous members shall be classified as non-ferrous. 3.13 crank assembly Crank assembly for fatigue testing consists of the two cranks, the pedal spindles, the bottom bracket spindle, and the first component of the drive system, e.g. chainwheel Requirements of Sub-assemblies 4 General 4.1 Sharp edges Exposed edges that could come into contact with the rider’s hands, legs, etc., during normal riding or normal handling and normal maintenance shall not be sharp. 4.2 Protrusions Any rigid exposed protrusion longer than 8 mm after assembly shall terminate in a radius of not less than 6.3 mm. Such protrusions shall have a major end dimension greater than 12.7 mm and a minor end dimension greater than 3.2 mm. There shall be no protrusions on the top tube of a bicycle frame between the saddle and a point 300 mm forward of the saddle, with the exception that control cables no greater than 6.4 mm in diameter and cable clamps made from material no thicker than 4.8 mm may be attached to the top tube. Foam pads attached to the bicycle frame to act as protective cushions are permitted, provided that the bicycle meets the requirements for protrusions when the pads are removed. A screw thread that is an exposed protrusion (3.9) shall be limited to a protrusion length of one major diameter of the screw beyond the internally threaded mating part.   5 Brakes 5.1 Braking systems A bicycle shall be equipped with two braking systems. One shall operate on the front wheel and one on the rear wheel. The braking systems shall operate without binding and shall be capable of meeting the braking performance requirements of 5.5. Brake blocks containing asbestos shall not be permitted. 5.2 Hand-operated brakes 5.2.1 Brake lever position Hand brake levers for front and rear brakes shall be positioned according to the legislation or custom and practice of the country in which the bicycle is to be sold. 5.2.2 Brake lever dimensions The maximum grip dimension, d, measured between the outer surfaces of the brake lever and the handlebar, or the handlebar grip or any other covering where present, shall not exceed 90 mm between points A and B, and 100 mm between points B and C (see Figure 2). Note: The range of adjustment on the brake lever should permit these dimensions to be obtained. 5.2.3 Attachment of brake assembly The screws used to attach a brake assembly to the frame, fork or handlebar shall be provided with suitable locking devices, for example a lock-washer, lock-nut or stiff-nut. Cable pinch-bolts shall not sever any of the cable strands when assembled to the manufacturer’s instructions. In the event of a brake cable failing, no part of the brake mechanism shall inadvertently inhibit the rotation of the wheel. The cable end shall either be protected with a cap that shall withstand a removal force of 20 N or be otherwise treated to prevent unravelling. 5.2.4 Brake block assembly The brake block shall be securely attached to the backing plate or holder and there shall be no failure of the block assembly when tested by the method specified in Clause 22. The brake system shall be capable of meeting the strength test specified in 5.4.1 and the braking performance requirements of 5.5.1 and 5.5.2 after completion of the test specified in Clause 22. 5.2.5 Brake adjustment The brakes shall be capable of adjustment to an efficient operating position until the brake blocks have worn to the point of requiring replacement as recommended in the literature provided by the manufacturer. When correctly adjusted, the brake block shall not contact anything other than the intended braking surface. The brake blocks of a bicycle with rod brakes shall not come into contact with the rim of the wheels when the steering angle of the handlebars is set at 60°, nor shall the rods bend, or be twisted after the handlebars are reset to the central position. Dimensions in millimeters Figure 2 Brake Lever Grip Dimensions 5.3 Back-pedal brakes The brake shall be actuated by the operator’s foot applying force to the pedal in a direction opposite to that of the drive force. The brake mechanism shall function independently of any drive-gear positions or adjustments. The differential between the drive and brake positions of the crank shall not exceed 60°. The measurement shall be taken with the crank held against each position with a torque of at least 14 N. m. 5.4 Strength of brake system 5.4.1 Hand-operated brakes When tested by the method described in 23.1, there shall be no failure of the brake system or of any component thereof. 5.4.2 Back-pedal brakes When tested by the method described in 23.2, there shall be no failure of the brake system or any component thereof. 5.5 Braking performance 5.5.1 Braking under dry conditions When tested by the method described in Clause 24, a bicycle shall be brought to a smooth safe stop within the relevant distances and from the relevant velocities given in Table 1. 5.5.2 Braking under wet conditions When tested by the method described in Clause 24, a bicycle shall be brought to a smooth safe stop within the relevant distances and from the relevant velocities given in Table 1. Table 1 Brake Test Velocities and Braking Distances Test conditions Test velocity (km/h) Brakes in use Braking distance (m) Dry 25 Both 7 Rear only 15 Wet 16 Both 9 Rear only 19 5.5.3 Extension levers Where a bicycle is fitted with extension levers, separate tests shall be conducted for the operation of the extension levers in addition to tests using the normal levers to which the extensions are attached. 5.5.4 Linearity of back-pedal brake When tested by the method described in Clause 25, the brake force shall be linearly proportional (within ±20%) for a pedal force from 90 N to 300 N and shall be not less than 150 N for a pedal force of 300 N. 6 Steering 6.1 Handlebars The handlebars shall have an overall width between 350 mm and 700 mm. The vertical distance between the top of the handlebar grips, when assembled to the highest riding position according to the manufacturer’s instructions, and the seat surface of the saddle in its lowest position shall not exceed 400 mm. The ends of the handlebars shall be fitted with handgrips or end plugs that will withstand a removal force of 70 N.
Foreword II General 1 Scope 2 Normative References 3 Terms and Definitions Requirements of Sub-assemblies 4 General 5 Brakes 6 Steering 7 Frame-fork assembly 8 Front fork 9 Wheels 10 Rims, Tyres and Tubes 11 Pedals and Pedal/Crank Drive System 12 Saddle 13 Chain 14 Chainguard 15 Spoke Protector 16 Lighting 17 Reflectors 18 Warning Device 19 Instructions 20 Marking Requirements of Complete Bicycle 21 Road Test Test Methods 22 Brake Block Test 23 Brake System Load Test 24 Braking Performance Test 25 Back-pedal Brake Linearity Test 26 Steering Assembly Test 27 Impact Tests on Frame-fork Assembly 28 Static Load Test (Wheel) 29 Pedal Tests 30 Saddle and Saddle Pillar Tests 31 Road Test Annex A (Informative) Explanation of Method of Least Squares for Obtaining Line of Best Fit and ±20% Limit Lines for Back-pedal Brake Linearity Test Annex B (Informative) Steering Geometry Bibliography
Referred in GB 3565-2005:
*QB/T 1716-1993 Bicycle Chain
*QB/T 1723-1993 Bells for bicycles
*QB 2191-1995 Bicycle Reflector
GB 3565-2005 is referred in:
* QB 1880-2008 Front forks for bicycles
* QB 1880-2008 Front forks for bicycles
*GB 17761-2018 Safety technical specification for electric bicycle
*JTG F80/1-2004 Quality Inspection and Evaluation Standards for Highway Engineering Section 1 Civil Engineering
*GB 5009.267-2020 National food safety standard - Determination of Iodine in foods
*JJG 971-2019 Liquid Level Gauges
*T/ASC 08-2020 Guidelines on emergency operation and management of office buildings for dealing with COVID-19
*GB 17762-2022 Safe requirements of thermotolerant glassware
*GB 21288-2022 Limits for human exposure to electromagnetic fields emitted by mobile communication terminals
*GB 2890-2022 Respiratory protection—Non-powered air-purifying respirators
*GB/T 38268-2019 Determination of short chain chlorinated paraffins in textiles dyeing and finishing auxiliaries
*YD/T 3621.2-2019 N×25Gbit/s WDM-PON for 5G mobile Fronthaul—Part2: PMD requirements
*YD/T 3627-2019 5G digital cellular mobile telecommunication network-technical requirements of eMBB user equipment (Phase 1)
*GB/T 18319-2019 Textiles—Test method for solar heat storage property
*GB/T 3836.12-2019 Explosive atmospheres—Part 12:Material characteristics for combustible dusts—Test methods
*GB 28377-2019 Minimum allowable values of water efficiency and water efficiency grades for urinals
*EJ/T 331-1992 Containment Isolation Device for Fluid System after Loss of Coolant Accident
*GB 5135.1-2019 Automatic sprinkler system—Part 1:Sprinkler
*GB 5135.1-2003 Automatic sprinkler system—Part 1:Sprinkler
*GB 18296-2019 Safety property requirements and test methods for automobile fuel tank and its installation
*GB/T 24610.1-2019 Rolling bearings—Measuring methods for vibration—Part 1:Fundamentals
*GB/T 24610.4-2019 Rolling bearings—Measuring methods for vibration—Part 4:Radial cylindrical roller bearings with cylindrical bore and outside surface
*GB/T 12764-2019 Rolling bearings—Needle roller bearings with drawn cup and without inner ring—Boundary dimensions,geometrical product specifications(GPS)and tolerance values
*GB/T 36927-2018 Judgment guideline of children's jewellery
*GB/T 7962.21-2019 Test method of colourless optical glass—Part 21:Resistance to attack by aqueous alkaline solutions
*GB/T 3903.43-2019 Footwear—Test methods for uppers,lining and insocks—Seam strength
*SH/T 3081-2019 Design code for instrument earthing in petrochemical industry
*GB 15744-2019 The limits and measurement methods of fuel consumption for motorcycles and mopeds
*AQ 9010-2019 Specifications for accidents prevention technical service on work safety liability insurance
*GB/T 19836-2019/XG1-2022 Instrumentation for electric vehicles (including Amendment 1)
*GB/T 223.88-2019 Iron, steel and alloy—Determination of calcium and magnesium contents—Inductively coupled plasma atomic emission spectrometric method
*GB/T 17888.1-2020 Safety of machinery—Permanent means of access to machinery—Part 1:Choice of fixed means and general requirements of access
*GM/T 0065-2019 Specification for capability construction of production and guarantee for commercial-cryptographic products
*GB/T 25384-2018 Wind turbines—Full scale structural testing of rotor blade
*GA/T 911-2019 Information security technology Security technical requirements for log analysis products
*WS/T 652-2019 Standard for determination of food glycemic index
*GB/T 17236-2019 Operating procedures of livestock and poultry slaughtering—Pig
*GB/T 37419-2019 Small craft—Electrical/electronic control systems for steering, shift and throttle
*GB/T 1634.1-2019 Plastics—Determination of temperature of deflection under load—Part 1:General test method
*GB/T 1048-2019 Pipework components—Definition and selection of nominal pressure
*GB/T 20851.5-2019 Electronic toll collection—Dedicated short range communication—Part 5:Test methods of the main parameters in physical layer
*GB 2626-2006 Respiratory protective equipment -- non-powered air-purifying particle respirator
*GB/T 37453-2019 Ships and marine technology—Ships mooring and towing fittings—Pedestal fairleads
*GB/T 37448-2019 Ships and marine technology—Ships mooring and towing fittings—Shipside roller fairleads
*GB/T 36199-2018 Soil quality—Guidance on the design of sampling programmes
*GB/T 36197-2018 Soil quality—Guidance on sampling techniques
*GB/T 37378-2019 Transportation—Information security specification
*GB/T 31024.4-2019 Cooperative intelligent transportation systems—Dedicated short range communications—Part 4: Equipment application specification
*GB/T 37474-2019 Methods and requirements of airbag system abuse test for automobile
*GA 1531-2018 General rules for information management of industrial electronic detonators
Code of China
Standard
GB 3565-2005  Safety requirements for bicycles (English Version)
Standard No.GB 3565-2005
Statusto be abolished
LanguageEnglish
File FormatPDF
Word Count11000 words
Price(USD)270.0
Implemented on2005-12-1
Deliveryvia email in 1 business day
Detail of GB 3565-2005
Standard No.
GB 3565-2005
English Name
Safety requirements for bicycles
Chinese Name
自行车安全要求
Chinese Classification
Y14
Professional Classification
GB
ICS Classification
Issued by
SAC, AQSIQ
Issued on
2005-5-17
Implemented on
2005-12-1
Status
to be abolished
Superseded by
GB 3565.2-2022 Safety requirements for bicycles—Part 2:Requirements for city and trekking, young adult, mountain and racing bicycles
Superseded on
2023-10-1
Abolished on
2023-10-01
Superseding
GB 3565-1993 Safety requirements for bicycles
Language
English
File Format
PDF
Word Count
11000 words
Price(USD)
270.0
Keywords
GB 3565-2005, GB/T 3565-2005, GBT 3565-2005, GB3565-2005, GB 3565, GB3565, GB/T3565-2005, GB/T 3565, GB/T3565, GBT3565-2005, GBT 3565, GBT3565
Introduction of GB 3565-2005
Clause 4, Clause 5; 6.2, 6.5 and 6.6 of Clause 6; Clause 7; 8.2 of Clause 8; 9.3 of Clause 9; 11.2 of Clause 11; 12.2 and 12.6 of Clause 12; Clause 14, Clause 15, Clause 17 and Clause 18 of this standard are mandatory; and the rest are recommendatory. This standard is identical with International Standard ISO 4210:1996 "Cycles — Safety Requirements for Bicycles" (Fourth Edition). For the purposes of this standard, the following editorial changes have also been made on ISO 4210:1996: for example, the section numbers of ISO 4210:1996 are deleted; ISO standards referenced in ISO 4210:1996 are changed to corresponding professional standards of bicycle parts in China, the technical provisions of which are equivalent to the ISO standards referenced. In producing this standard, the aim has been to ensure that bicycles manufactured in compliance with it will be as safe as is practically possible. The tests are designed to ensure the strength and durability of individual parts as well as of the bicycle as a whole, demanding high quality throughout and consideration of safety aspects from the design stage onwards. This standard cancels and replaces GB 3565-1993 (idt ISO 4210:1989, the third edition), the following technical deviations have been made with respect to the GB 3565-1993 (the previous edition). — Enhance brake performance requirements and test methods; — Add requirements for wheel quick-release mechanisms; — Enhance requirements for chainguards to cover multi-chainwheel assemblies; — Add new requirements for fatigue testing of handlebar assemblies, front forks, pedal crank assemblies and saddle pillars. The scope of this standard limited to safety considerations, and has specifically avoided standardization of components (dimensions). The Annex A and Annex B of this standard are for informative only. This standard was proposed by China National Light Industry Council. This standard was prepared by National Technical Committee on Bicycle of Standardization Administration of China. The previous editions of the standard replaced by this standard are as follows: — GB 3565-1983, GB 3565-1993. Safety Requirements for Bicycles General 1 Scope This standard specifies safety and performance requirements for the design, assembly and testing of bicycles and sub-assemblies, and lays down guidelines for instructions on the use and care of bicycles. This standard is applicable to bicycles intended for use on public roads, and on which the saddle can be adjusted to provide a saddle height of 635 mm or more. This standard does not apply to specialized types of bicycle such as tradesmen’s delivery bicycles, tandems, toy bicycles and bicycles designed and equipped for use in sanctioned competitive events. 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. QB/T 1716-1993 Cycle Chains QB/T 1723-1993 Bells for Bicycles QB 2191-1995 Cycle reflectors 3 Terms and Definitions For the purpose of this standard, the following terms and definitions apply. 3.1 cycle Any vehicle that has at least two wheels and is propelled solely by the muscular energy of the person on that vehicle, in particular by means of pedals 3.2 bicycle Two-wheeled cycle 3.3 delivery bicycle Bicycle designed for the primary purpose of carrying goods 3.4 tandem Bicycle with saddles for two or more riders, one behind the other 3.5 saddle height Dimension from the ground plane to the top of the saddle, measured in the centre of the seating area normal to the ground plane when the bicycle is upright 3.6 braking distance Distance travelled by a bicycle between the commencement of braking (3.7) and the point at which the bicycle comes to rest 3.7 commencement of braking Point on the test track at which the brake actuating mechanism is moved from its rest position. In tests with two brakes, this point is determined by the first mechanism to operate 3.8 gear development Distance travelled by a bicycle during one revolution of the pedal cranks 3.9 exposed protrusion Protrusion that can be contacted by the central 75 mm of the lateral surface of a cylinder 250 mm long and 83 mm in diameter (simulating a limb), see Figure 1 Dimensions in millimeters Figure 1 Exposed Protrusion Test Cylinder 3.10 (pedal) tread surface Surface of a pedal that is presented to the underside of the foot, the design of which incorporates a slip-resistant characteristic 3.11 ferrous component Component composed of structural members made entirely from ferrous materials excluding any jointing media such as brazing materials or adhesives 3.12 non-ferrous component Component composed of structural members made entirely from non-ferrous materials excluding any jointing media such as adhesives Note: For the purposes of the choice of fatigue test forces, any component made from a mixture of ferrous and non-ferrous members shall be classified as non-ferrous. 3.13 crank assembly Crank assembly for fatigue testing consists of the two cranks, the pedal spindles, the bottom bracket spindle, and the first component of the drive system, e.g. chainwheel Requirements of Sub-assemblies 4 General 4.1 Sharp edges Exposed edges that could come into contact with the rider’s hands, legs, etc., during normal riding or normal handling and normal maintenance shall not be sharp. 4.2 Protrusions Any rigid exposed protrusion longer than 8 mm after assembly shall terminate in a radius of not less than 6.3 mm. Such protrusions shall have a major end dimension greater than 12.7 mm and a minor end dimension greater than 3.2 mm. There shall be no protrusions on the top tube of a bicycle frame between the saddle and a point 300 mm forward of the saddle, with the exception that control cables no greater than 6.4 mm in diameter and cable clamps made from material no thicker than 4.8 mm may be attached to the top tube. Foam pads attached to the bicycle frame to act as protective cushions are permitted, provided that the bicycle meets the requirements for protrusions when the pads are removed. A screw thread that is an exposed protrusion (3.9) shall be limited to a protrusion length of one major diameter of the screw beyond the internally threaded mating part.   5 Brakes 5.1 Braking systems A bicycle shall be equipped with two braking systems. One shall operate on the front wheel and one on the rear wheel. The braking systems shall operate without binding and shall be capable of meeting the braking performance requirements of 5.5. Brake blocks containing asbestos shall not be permitted. 5.2 Hand-operated brakes 5.2.1 Brake lever position Hand brake levers for front and rear brakes shall be positioned according to the legislation or custom and practice of the country in which the bicycle is to be sold. 5.2.2 Brake lever dimensions The maximum grip dimension, d, measured between the outer surfaces of the brake lever and the handlebar, or the handlebar grip or any other covering where present, shall not exceed 90 mm between points A and B, and 100 mm between points B and C (see Figure 2). Note: The range of adjustment on the brake lever should permit these dimensions to be obtained. 5.2.3 Attachment of brake assembly The screws used to attach a brake assembly to the frame, fork or handlebar shall be provided with suitable locking devices, for example a lock-washer, lock-nut or stiff-nut. Cable pinch-bolts shall not sever any of the cable strands when assembled to the manufacturer’s instructions. In the event of a brake cable failing, no part of the brake mechanism shall inadvertently inhibit the rotation of the wheel. The cable end shall either be protected with a cap that shall withstand a removal force of 20 N or be otherwise treated to prevent unravelling. 5.2.4 Brake block assembly The brake block shall be securely attached to the backing plate or holder and there shall be no failure of the block assembly when tested by the method specified in Clause 22. The brake system shall be capable of meeting the strength test specified in 5.4.1 and the braking performance requirements of 5.5.1 and 5.5.2 after completion of the test specified in Clause 22. 5.2.5 Brake adjustment The brakes shall be capable of adjustment to an efficient operating position until the brake blocks have worn to the point of requiring replacement as recommended in the literature provided by the manufacturer. When correctly adjusted, the brake block shall not contact anything other than the intended braking surface. The brake blocks of a bicycle with rod brakes shall not come into contact with the rim of the wheels when the steering angle of the handlebars is set at 60°, nor shall the rods bend, or be twisted after the handlebars are reset to the central position. Dimensions in millimeters Figure 2 Brake Lever Grip Dimensions 5.3 Back-pedal brakes The brake shall be actuated by the operator’s foot applying force to the pedal in a direction opposite to that of the drive force. The brake mechanism shall function independently of any drive-gear positions or adjustments. The differential between the drive and brake positions of the crank shall not exceed 60°. The measurement shall be taken with the crank held against each position with a torque of at least 14 N. m. 5.4 Strength of brake system 5.4.1 Hand-operated brakes When tested by the method described in 23.1, there shall be no failure of the brake system or of any component thereof. 5.4.2 Back-pedal brakes When tested by the method described in 23.2, there shall be no failure of the brake system or any component thereof. 5.5 Braking performance 5.5.1 Braking under dry conditions When tested by the method described in Clause 24, a bicycle shall be brought to a smooth safe stop within the relevant distances and from the relevant velocities given in Table 1. 5.5.2 Braking under wet conditions When tested by the method described in Clause 24, a bicycle shall be brought to a smooth safe stop within the relevant distances and from the relevant velocities given in Table 1. Table 1 Brake Test Velocities and Braking Distances Test conditions Test velocity (km/h) Brakes in use Braking distance (m) Dry 25 Both 7 Rear only 15 Wet 16 Both 9 Rear only 19 5.5.3 Extension levers Where a bicycle is fitted with extension levers, separate tests shall be conducted for the operation of the extension levers in addition to tests using the normal levers to which the extensions are attached. 5.5.4 Linearity of back-pedal brake When tested by the method described in Clause 25, the brake force shall be linearly proportional (within ±20%) for a pedal force from 90 N to 300 N and shall be not less than 150 N for a pedal force of 300 N. 6 Steering 6.1 Handlebars The handlebars shall have an overall width between 350 mm and 700 mm. The vertical distance between the top of the handlebar grips, when assembled to the highest riding position according to the manufacturer’s instructions, and the seat surface of the saddle in its lowest position shall not exceed 400 mm. The ends of the handlebars shall be fitted with handgrips or end plugs that will withstand a removal force of 70 N.
Contents of GB 3565-2005
Foreword II General 1 Scope 2 Normative References 3 Terms and Definitions Requirements of Sub-assemblies 4 General 5 Brakes 6 Steering 7 Frame-fork assembly 8 Front fork 9 Wheels 10 Rims, Tyres and Tubes 11 Pedals and Pedal/Crank Drive System 12 Saddle 13 Chain 14 Chainguard 15 Spoke Protector 16 Lighting 17 Reflectors 18 Warning Device 19 Instructions 20 Marking Requirements of Complete Bicycle 21 Road Test Test Methods 22 Brake Block Test 23 Brake System Load Test 24 Braking Performance Test 25 Back-pedal Brake Linearity Test 26 Steering Assembly Test 27 Impact Tests on Frame-fork Assembly 28 Static Load Test (Wheel) 29 Pedal Tests 30 Saddle and Saddle Pillar Tests 31 Road Test Annex A (Informative) Explanation of Method of Least Squares for Obtaining Line of Best Fit and ±20% Limit Lines for Back-pedal Brake Linearity Test Annex B (Informative) Steering Geometry Bibliography
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Keywords:
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