• DIN EN 14781:2006-03

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    RACING BICYCLES - SAFETY REQUIREMENTS AND TEST METHODS

    Available format(s):  Hardcopy, PDF

    Superseded date:  01-01-2015

    Language(s):  English

    Published date:  13-01-2013

    Publisher:  German Institute for Standardisation (Deutsches Institut für Normung)

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Requirements and test methods
      4.1 Brake tests and strength tests - special requirements
           4.1.1 Definition of brake tests
           4.1.2 Definition of strength tests
           4.1.3 Numbers and condition of specimens for the
                 strength tests
           4.1.4 Accuracy tolerances of test conditions for brake
                 tests and strength tests
      4.2 Sharp edges
      4.3 Security and strength of safety-related fasteners
           4.3.1 Security of screws
           4.3.2 Minimum failure torque
      4.4 Crack detection methods
      4.5 Protrusions
           4.5.1 Requirement
           4.5.2 Test method
      4.6 Brakes
           4.6.1 Braking-systems
           4.6.2 Hand-operated brakes
           4.6.3 Attachment of brake assembly and cable
                 requirements
           4.6.4 Brake-block and brake-pad assemblies - security test
           4.6.5 Brake adjustment
           4.6.6 Hand-operated braking-system - strength test
           4.6.7 Braking performance
           4.6.8 Brakes - heat-resistance test
      4.7 Steering
           4.7.1 Handlebar - dimensions
           4.7.2 Handlebar grip-areas, grips and plugs
           4.7.3 Handlebar-stem - insertion-depth mark or positive
                 stop
           4.7.4 Handlebar stem-extension to fork-stem - clamping
                 requirements
           4.7.5 Steering stability
           4.7.6 Steering assembly - static strength and security tests
           4.7.7 Handlebar and stem assembly - fatigue test
      4.8 Frames
           4.8.1 Suspension-frames - special requirements
           4.8.2 Frame and front fork assembly - impact test (falling
                 mass)
           4.8.3 Frame and front fork assembly - impact test (falling
                 frame)
           4.8.4 Frame - fatigue test with pedalling forces
           4.8.5 Frame - fatigue test with horizontal forces
      4.9 Front fork
           4.9.1 General
           4.9.2 Means of location of the axle and wheel retention
           4.9.3 Suspension-forks - special requirements
           4.9.4 Front fork - static bending test
           4.9.5 Front fork - rearward impact test
           4.9.6 Front fork - bending fatigue test
           4.9.7 Forks intended for use with hub- or disc-brakes
           4.9.8 Tensile test for a non-welded fork
      4.10 Wheels and wheel/tyre assemblies
           4.10.1 Rotational accuracy
           4.10.2 Wheel/tyre assembly - clearance
           4.10.3 Wheel/tyre assembly - static strength test
           4.10.4 Wheel retention
           4.10.5 Wheels - quick-release devices - operating features
      4.11 Rims, tyres and tube
           4.11.1 Tyre inflation pressure
           4.11.2 Tyre and rim compatibility
           4.11.3 Tubular tyres and rims
           4.11.4 Rim wear
      4.12 Pedals and pedal/crank drive system
           4.12.1 Foot retention
           4.12.2 Pedal clearance
           4.12.3 Pedal/pedal-spindle assembly - static strength test
           4.12.4 Pedal-spindle - impact test
           4.12.5 Pedal/pedal-spindle - dynamic durability test
           4.12.6 Drive-system - static strength test
           4.12.7 Crank assembly - fatigue test
      4.13 Saddles and seat-pillars
           4.13.1 General
           4.13.2 Limiting dimensions
           4.13.3 Seat-pillar - insertion depth mark or positive stop
           4.13.4 Saddle/seat-pillar - security test
           4.13.5 Saddle - static strength test
           4.13.6 Saddle and seat-pillar clamp - fatigue test
           4.13.7 Seat-pillar - fatigue
      4.14 Drive-chain
      4.15 Chain-guard
           4.15.1 General
           4.15.2 Requirement
           4.15.3 Chain-wheel disc diameter
           4.15.4 Chain protective device
           4.15.5 Combined front gear-change guide
      4.16 Spoke protector
      4.17 Lighting systems and reflectors
           4.17.1 Lighting and reflectors
           4.17.2 Wiring harness
      4.18 Warning device
      4.19 Handling and operation of fully-assembled bicycle
           4.19.1 Requirement
           4.19.2 Test method
    5 Manufacturer's instructions
    6 Marking
      6.1 Requirements
      6.2 Durability test
           6.2.1 Requirement
           6.2.2 Test method
    Annex A (informative) Explanation of the method of least squares
                          for obtaining line of best fit and +/- 20 %
                          limit lines for braking performance linearity
    Annex B (informative) Steering geometry
    Bibliography
    National Annex NA (informative) Brakes and structural integrity
                      of the fully assembled bicycle
    National Annex NB (informative) Bibliography

    Abstract - (Show below) - (Hide below)

    Describes safety and performance requirements for the design, assembly and testing of racing bicycles and sub-assemblies, and lays down guidelines for manufacture's instructions on the use and care of such bicycles.

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 7636:1984 Bells for bicycles and mopeds Technical specifications
    DIN ISO 7636:1986-02 BELLS FOR BICYCLES AND MOPEDS - REQUIREMENTS, TESTING
    ISO 1101:2017 Geometrical product specifications (GPS) — Geometrical tolerancing — Tolerances of form, orientation, location and run-out
    ISO 9633:2001 Cycle chains — Characteristics and test methods
    DIN ISO 1101:1985-03 TECHNICAL DRAWINGS, GEOMETRICAL TOLERANCING, TOLERANCES OF FORM, ORIENTATION, LOCATION AND RUNOUT - GENERALITIES, DEFINITIONS, SYMBOLS ON DRAWINGS
    ISO 5775-1:2014 Bicycle tyres and rims Part 1: Tyre designations and dimensions
    ISO 5775-2:2015 Bicycle tyres and rims Part 2: Rims
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