ISO 4210-2:2023
(Main)Cycles — Safety requirements for bicycles — Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles
Cycles — Safety requirements for bicycles — Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles
This document specifies safety and performance requirements for the design, assembly, and testing of bicycles and sub-assemblies, and lays down guidelines for manufacturer’s instructions on the use and care of such bicycles. This document applies to young adult bicycles with maximum saddle height of 635 mm or more and less than 750 mm, city and trekking bicycles, mountain bicycles, and racing bicycles that have a maximum saddle height of 635 mm or more including folding bicycles. This document does not apply to specialized types of bicycle, such as delivery bicycles, recumbent bicycles, tandems, BMX bicycles, and bicycles designed and equipped for use in severe applications such as sanctioned competition events, stunting, or aerobatic manoeuvres. NOTE For bicycles with a maximum saddle height of 435 mm or less, see national regulations for ride-on toys, and with a maximum saddle height of more than 435 mm and less than 635 mm, see ISO 8098.
Cycles — Exigences de sécurité pour les bicyclettes — Partie 2: Exigences pour bicyclettes de ville et tout chemin (trekking), jeunes adultes, tout-terrain et de course
Le présent document spécifie les exigences de sécurité et de performance à observer lors de la conception, de l'assemblage et des essais des bicyclettes et de leurs sous-ensembles, et précise les lignes directrices concernant les instructions d'utilisation et d'entretien fournies par les fabricants de ces bicyclettes. Le présent document s'applique aux bicyclettes jeunes adultes ayant une hauteur maximale de selle supérieure ou égale à 635 mm et inférieure à 750 mm, aux bicyclettes de ville et tout chemin, aux bicyclettes tout terrain et aux bicyclettes de course ayant une hauteur maximale de selle supérieure ou égale à 635 mm, y compris les bicyclettes pliantes. Le présent document ne s'applique pas aux types spécialisés de bicyclettes comme les bicyclettes de livraison, les bicyclettes couchées, les tandems, les bicyclettes BMX et les bicyclettes conçues et équipées pour une utilisation dans des usages sévères telles que des compétitions réglementées, des cascades ou des figures acrobatiques. NOTE Pour les bicyclettes dont la hauteur maximale de selle est inférieure ou égale à 435 mm, se reporter aux réglementations nationales sur les jouets à enfourcher, et pour une hauteur maximale de selle supérieure à 435 mm et inférieure à 635 mm, voir l'ISO 8098.
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 4210-2
Third edition
2023-01
Cycles — Safety requirements for
bicycles —
Part 2:
Requirements for city and trekking,
young adult, mountain and racing
bicycles
Cycles — Exigences de sécurité pour les bicyclettes —
Partie 2: Exigences pour bicyclettes de ville et tout chemin (trekking),
jeunes adultes, tout-terrain et de course
Reference number
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Requirements . 2
4.1 Toxicity . 2
4.2 Sharp edges . 2
4.3 Security and strength of safety-related fasteners . 2
4.3.1 Security of screws . 2
4.3.2 Minimum failure torque . 2
4.3.3 Folding bicycle mechanism . 2
4.4 Crack detection methods . 3
4.5 Exposed protrusions . 3
4.6 Brakes . 3
4.6.1 Braking systems . 3
4.6.2 Hand-operated brakes . 3
4.6.3 Attachment of brake assembly and cable requirements . 4
4.6.4 Brake-block and brake-pad assemblies — Security test . 5
4.6.5 Brake adjustment . 5
4.6.6 Hand-operated braking-system — Strength test . 5
4.6.7 Back-pedal braking system — Strength test. 5
4.6.8 Braking performance . 5
4.6.9 Brakes — Heat-resistance test . . 8
4.7 Steering . 8
4.7.1 Handlebar — Dimensions . 8
4.7.2 Handlebar grips and plugs . 9
4.7.3 Handlebar stem — Insertion-depth mark or positive stop . 9
4.7.4 Handlebar stem to fork steerer — Clamping requirements . 10
4.7.5 Steering stability . 10
4.7.6 Steering assembly — Static strength and security tests . 11
4.7.7 Handlebar and stem assembly — Fatigue test .12
4.8 Frames .12
4.8.1 Suspension-frames — Special requirements .12
4.8.2 Frame — Impact test (falling mass) . 13
4.8.3 Frame and front fork assembly — Impact test (falling frame) .13
4.8.4 Frame — Fatigue test with pedalling forces .13
4.8.5 Frame — Fatigue test with horizontal forces . .13
4.8.6 Frame — Fatigue test with a vertical force .13
4.8.7 Rear brake mount tests . 14
4.9 Front fork . 14
4.9.1 General . 14
4.9.2 Means of location of the axle and wheel retention . 14
4.9.3 Tyre clearance test — Suspension fork . 14
4.9.4 Front fork — Tensile test . 14
4.9.5 Front fork — Static bending test . 14
4.9.6 Front fork — Rearward impact test . 14
4.9.7 Front fork — Bending fatigue test plus rearward impact test .15
4.9.8 Forks intended for use with hub- or disc-brakes. 15
4.9.9 Steerer tube — fatigue test . 15
4.10 Wheels and tyre assembly . 16
4.10.1 Wheels and tyre assembly — Rotational accuracy — Concentricity
tolerance and lateral tolerance . 16
iii
4.10.2 Wheel and tyre assembly — Clearance . 16
4.10.3 Wheel and tyre assembly — Static strength test . 16
4.10.4 Wheels — Wheel retention . 16
4.10.5 Wheels — Quick-release devices — Operating features . 17
4.10.6 Wheel and tyre assembly — Greenhouse effect test for composite wheels . 17
4.10.7 Wheel and tyre assembly — Heat resistance tests for composite rims used
in conjunction with rim brake. 18
4.10.8 Wheel and tyre assembly — Overpressure test . 18
4.10.9 Wheel and tyre assembly —Information for users . 19
4.11 Front mudguard . 19
4.12 Pedals and pedal/crank drive system . 19
4.12.1 Pedal tread . 19
4.12.2 Pedal clearance .20
4.12.3 Pedal — Static strength test . 21
4.12.4 Pedal — Impact test . 21
4.12.5 Pedal — Dynamic durability test . 21
4.12.6 Drive system — Static strength test . 21
4.12.7 Crank assembly — Fatigue test . 22
4.13 Drive-chain and drive belt . 22
4.13.1 Drive-chain .22
4.13.2 Drive belt .22
4.14 Chain-wheel and belt-drive protective device . 22
4.14.1 Requirements .22
4.14.2 Chain-wheel disc and drive pulley disc diameter .23
4.14.3 Chain and drive belt protective device . 24
4.14.4 Combined front gear-change guide . . 25
4.15 Saddles and seat-posts . 25
4.15.1 Limiting dimensions .25
4.15.2 Seat-post — Insertion-depth mark or positive stop .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.