Tiêu chuẩn iso 04210 2 2015

Cycles — Safety requirements for bicycles —Part 2: This p rt of ISO 42 0 spe if ies safety an pe formanc r q ir ment for the design, as embly, an t es ing of bicycles an sub-as embles ha

Cycles — Safety requirements for

Part 2:

bicycles

Cycles — Exigence s de sécurité de s bic yclet e s —

Partie 2: Exigence s p ur bic yclete s de ville et de ra do n e, de jeu e

COPYRIGHT PROTECTED DOCUMENT

© ISO 201 , P blshed in Sw itz rlan

A ll rig hts r eserved Unles otherw ise spe ified, nopar of this p blc tion ma y be r eprod c d or utilz d otherwise in an form

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written permis ion Permis ion c n be r eq esed fr om either ISO at the ad r es below or ISO’s member bod y in the c u ty of

the r eq eser

ISO c pyrig ht ofic

C de Blan on et 8 • C 4 1

F r eword v

Introduction vi

1 Sc ope 1

2 Nor mati ve r eferenc es 2

3 Terms and definitions 2

4 Requirements 2

4.1 Tox icity 2

4.2 Sharp edg es 2

4.3 S curity an streng th of safety-related fas ene s 2

4.3.1 S curity of screws 2

4.3.2 Minimum faiur e torque 3

4.3.3 Folding bicycle me hanism 3

4.4 Crack dete tion methods 3

4.5 Pr otrusions 3

4.6 Brakes 3

4.6.1 Braking sys ems 3

4.6.2 Hand-o erated br akes 4

4.6.3 Attachment ofbrake as embly an ca le r eq ir ements 5

4.6.4 Brake-block and br ake-p d as embles — S curity tes 5

4.6.5 Brake adjus ment 6

4.6.6 Hand-o erated br aking -sys em — Str eng th tes 6

4.6.7 Back-pedal braking sys em — Str eng th tes 6

4.6.8 Braking pe formanc 6

4.6.9 Brakes — Heat-r esistanc tes 9

4.7 Ste ring 9

4.7.1 Handleb r — Dimensions 9

4.7.2 Handleb r g ripsan plug s 1

4.7.3 Handleb r s em — Inse tion-depth mar k or p sitive s o .1

4.7.4 Handleb r s em to for k s e rer — Clamping req irement 1

4.7.5 Ste ring stabi ty 1

4.7.6 Ste ring as embly — Static str eng th an se urity tests 1

4.7.7 Handleb r an s em as embly — Fatig ue tes 1

4.8 Frames 1

4.8.1 Suspension-frames — Spe ial r eq ir ements 1

4.8.2 Frame — Imp ct tes (al ng mas ) 1

4.8.3 Frame an front for k as embly — Imp ct es (al ng fr ame) 14

4.8.4 Frame — Fatig ue tes w ith pedal ng for ces 14

4.8.5 Frame — Fatig ue tes w ith horizontal for ces 14

4.8.6 Frame — Fatig ue tes w ith a ve tical for ce 14

4.9 Fr ont for k 14

4.9.1 General 14

4.9.2 Means of location of the a le an whe l r etention 14

4.9.3 Suspension for ks — Spe ial r eq ir ement 1

4.9.4 Fr ont or k — Static ben ing tes 1

4.9.5 Fr ont or k — Rearwar d imp ct tes 1

4.9.6 Fr ont or k — Ben ing fatig ue tes plusr earwar d imp ct tes 1

4.9.7 For ks inten ed for use with h b- or disc-brakes 1

4.9.8 Tensie tes for a non-welded for k 1

4.1 Whe ls an whe l/tyr e as embly 1

4.1 1 Whe ls/tyr eas embly — Conc ntricity toler anc an lateral toler anc 1

4.1 2 Whe l/tyr e as embly — Clearanc 1

4.1 3 Whe l/tyr e as embly — Static s r eng th tes 1

4.1 5 Whe ls — Quick-r elease devic s — Operating featur es 1

4.1 R ims, tyr es, an tubes 1

4.1 1 General 1

4.1 2 T yr e inflation pr es ure 1

4.1 3 T yr e an rim compatibi ty 1

4.1 4 T ubular tyr es an rims 1

4.1 5 R im-wear 1

4.1 6 Gr een ouse efe t tes for comp site whe ls 1

4.1 Fr ont mu g uar d 1

4.1 Pedals an pedal/cr an drivesys em 1

4.1 1 Pedal tr ead 1

4.1 2 Pedal clearanc 2

4.1 3 Pedal — Static str eng th tes 2

4.1 4 Pedal — Impact tes 2

4.1 5 Pedal — Dynamic d rabi ty tes 2

4.1 6 Drive sys em — Static s r eng th tes 2

4.1 7 Cran as embly — Fatig ue tes 2

4.14 Drive-chain an drive belt 2

4.14.1 Drive-chain 2

4.14.2 Drive belt 2

4.1 Chain-whe l an belt-drive pr ote tive devic 2

4.1 1 Req ir ements 2

4.1 2 Chain-whe l disc and drive puley disc diamete 2

4.1 3 Chain an drive belt pr ote tive devic 24

4.1 4 C mbined fr ont g ear-chang e g uide 2

4.1 Sad les an seat-pos s 2

4.1 1 Limiting dimensions 2

4.1 2 S at-p s — Inse tion-depth mar k or p sitive s o 2

4.1 3 Sad le/seat-p s — S curity tes 2

4.1 4 Sad le — Static s r eng th tes 2

4.1 5 Sad le an seat-p s clamp — Fatig ue tes 2

4.1 6 S at-p s — Fatig ue tes 2

4.1 Sp ke pr ote tor 2

4.1 Lug gag e car ie s 2

4.1 Ro d tes of a fuly as embled bicycle 2

4.2 Lighting sys emsan r efle tors 2

4.2 1 General 2

4.2 2 Wiring harnes 2

4.2 3 Lighting sys ems 2

4.2 4 Refle tors 2

4.2 Warning devic 2

5 Manufacturer’s instructio s 29 6 Mar king

31 6.1 Req ir ement 3

6.2 Durabi ty tes 3

A nne x A (informative)Ste ring g eometr y

32

Biblog raph y 33

ISO (he Int ernational Org nization for Stan ardization) is a worldwide fede ation of national s an ards

b dies (ISO membe b dies) The work of pr paring Int ernational Stan ards is normal y car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www.iso.org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sp nsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www.iso.org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

F or an ex lanation on the meaning of ISO spe ific t erms and ex r s ions r lat ed t o conformity

as es ment, as wel as information a out ISO’s adhe enc t o the WTO principles in the Te h ical

Bar ie s t o Trade (TBT) se the fol owing URL: F or word - Sup lementary information

The committ ee r sponsible for this document is ISO/TC 149, Cycles , Subcommitt ee SC 1, Cycles a d

major s ub-as s embles

This se on edition canc ls and r plac s the f irs edition (ISO 42 0-2:2 14), which has be n

te h icaly r vised

ISO 42 0 consis s of the folowing part , un e the g ene al title Cycles — S fet y r q ir ments fr bicycles:

— Part 1: Te ms a d de initio s

— Part 2 : R eq ir ment fr c it y a d tr kkin , y u g adult, mo ntain a d rac in bicycles

— Part 3 : Commo tes t meth ds

— Part 4: B rakin tes t meth ds

— Part 5: Ste rin tes t meth ds

— Part 6 : Frame a d frk tes t meth ds

— Part 7: Whe l s a d rim tes t meth ds

— Part 8: Pedal a d dri ve sys tem tes t meth ds

— Part 9: S d les a d s eat-p s t tes t meth ds

This Int ernational Stan ard has be n develo ed in r sp nse t o deman throughout the world, an the

aim has be n t o ensur that bicycles man factur d in compl anc with this Int ernational Stan ard

wi be as safe as is practicaly p s ible The t es s ha e be n designed t o ensur the s r ngth an

d ra i ty of in ivid al p rt as wel as of the bicycle as a w hole, deman ing high q alty throughout

an conside ation of safety aspe t from the design s ag e onwards

The sco e has be n lmit ed t o safety conside ations an has spe if ical y a oided s an ardization of

comp nent

If the bicycle is t o be used on publc ro ds, national r gulations a ply

F or the purp ses of impro ing r peata i ty an r prod cibi ity an conside ing the a plca i ty t o

al ty es of bicycle an the siz and influenc of the o e at or, the machine t es method r fle t t oda ’s

s at e of the art an is pr fe r d t o the track t es method

Unles the e is evidenc of impro ement of the t es track method in the futur , this method wi be

made informative for the next r vision Use s of this Int ernational Stan ard ar invit ed t o pro ide their

fe db ck t o ISO/TC 149 SC 1

Cycles — Safety requirements for bicycles —

Part 2:

This p rt of ISO 42 0 spe if ies safety an pe formanc r q ir ment for the design, as embly, an

t es ing of bicycles an sub-as embles ha ing sad leheight as given in Ta le 1, an la s down guidelnes

for man factur r’s ins ructions on the use an car of such bicycles

This p rt of ISO 42 0 a ples t o y ung adult bicycles with ma imum sad le height of 6 5 mm or mor

an les than 7 0 mm, city an tr k ing bicycles, mou tain bicycles, an racing bicycles that ha e a

ma imum sad le height of 6 5 mm or mor inclu ing folding bicycles ( e Ta le 1 an Figur 1)

This p rt of ISO 42 0 does not a ply t o spe ialz d ty es of bicycle, such as delve y bicycles, r cumbent

bicycles, tan ems, BMX bicycles, and bicyclesdesigned an eq ipped for use in seve e a plcations such

as sanctioned competition event , s u ting, or ae o atic manoeuvr s

NOTE F or bicycles with a ma imum sad le height of 43 mm or les , se ISO 8 24-1, an with a ma imum

sad le height of more than 43 mm an les than 63 mm,se ISO 8 9

Table 1 — Maximum saddle height

Dimensions in milimetr es

H max imum sad le heig ht

1 minimum insertion-depth mar k

2 g r ou d plane

Figure 1 — Maximum saddle height

2 Normati ve referenc es

The folowing document , in w hole or in p rt, ar normatively r fe enc d in this document an ar

in ispensa le for it a pl cation F or dat ed r fe enc s, only the edition cit ed a ples F or un at ed

r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment ) a ples

ISO 42 0-1, Cycles — S fet y r q ir ments fr bicycles — Part 1: Te ms a d de initio s

ISO 42 0-3:2 14, Cycles — S fet y r q ir ment fr bicycles — Part 3 : Commo tes t meth ds

ISO 42 0-4:2 14, Cycles — S fet y r q ir ments fr bicycles — Part 4 : B rakin tes t meth ds

ISO 42 0-5:2 14, Cycles — S fet y r q ir ments fr bicycles — Part 5: Ste rin tes t meth ds

ISO 42 0-6:2 1 , Cycles — S fet y r q ir ment fr bicycles — Part 6 : Frame a d frk tes t meth ds

ISO 42 0-7 :2 14, Cycles — S fet y r q ir ments fr bicycles — Part 7: Whe l s a d rims tes t meth ds

ISO 42 0-8:2 14, Cycles — S fet y r q ir ments fr bicycles — Part 8: Pedal a d dri ve sys tem tes t meth ds

ISO 42 0-9:2 14, Cycles — S fet y r q ir ments f r bicycles — Part 9: S d les a d s eat-p s t tes t meth ds

ISO 5 7 -1, B icycle t y res a d rims — Part 1: Ty re des ig atio s a d dimens io s

ISO 5 7 - 2, B icycle t y res a d rims — Part 2 : Rims

ISO 6 42-1, Cycles — Lig tin  a d r tro-r flec ti ve dev ic es — Part 1: Lig tin  a d lg t s ig allin  dev ic es

ISO 6 42- 2, Cycles — Lig tin  a d r tro-r flec ti ve devic es — Part 2 : R etro-r flec ti ve dev ic es

ISO 9 3 , Cycle chains — Ch rac te i s tic s a d tes t meth ds

ISO 1 243, Cycles — L g a e c ar ie s fr bicycles — Co c ept , clas s ific atio  a d tes tin

3 Ter ms and definitions

F or the purposes of this document, the t erms an def initions given in ISO 42 0-1 a ply

4.1 Tox icity

Any it ems w hich come int o intimat e contact with the ride ( i.e causing any hazard d e t o sucking or

lcking)shal comply with any national r gulations spe if ic t o chidr n prod ct

4.2 Sharp edg es

Ex osed edg es that could come int o contact with the ride ’ s han s, legs, et c d ring normal riding or

normal han l ng an normal maint enanc shal not be sharp, e.g debur ed, broken, roled, or proc s ed

with comp ra le t ech iq es

NOTE R efer t o ISO 1 71 :2 0

4.3 S curity and streng th of safety-related fastener

suita le locking devic s, e.g lock-washe s, lock-n t , thr ad locking compoun , or s if n t F ast ene s

used t o as embleh b an disc brakesshould ha e heat-r sis ant locking devic s

NOTE 1 T e s rews used to at ach the h b g nerat or are not inclu ed

NOTE 2 F or e ample, mechanical an p ysical properties of b lts are specif ied in ISO 8 8-1

4.3.2 Minimum faiur e torque

The minimum faiur t orq e of b lted joint for the fas ening of han le b rs, han leb r s ems, b r

en s, sad le an seat-p s s shal be at leas 5 % gr ate than the man factur r’ s r commen ed

tightening t orq e

4.3.3 F lding bicycle mechanism

If folding bicycle me hanism is pro ided, it hal be designed so that the bicycle can be locked for use in

a simple, s a le, safe wa , an w hen folded, no damag e shal oc ur t o any ca les No locking me hanism

shal contact the w he ls or tyr s d ring riding, an it shal be imp s ible t o u int entionaly lo sen or

unlock the folding me hanisms d ring riding

4.4 Crack detection methods

Stan ardiz d methods should be used t o emphasiz the pr senc of c acks w he e visible c acks ar

spe if ied as c it eria of fai ur in t es s spe if ied in this part of ISO 42 0

NOTE F or e ample, suita le dye-penetrant methods are specif ied in ISO 345 -1, ISO 345 -2, ISO 345 -3, an

ISO 345 -4 In ad ition, whit e paint or surface tre tment can b used t o aid in detection for composite materials

4.5 Protr usions

This r q ir ment is int en ed t o ad r s the hazards as ociat ed with the use s of bicycles fal ng on

proje tions or rigid comp nent (e.g han leb rs, leve s) on a bicycle, pos ibly ca using int ernal injury or

skin punctur

T bes an rigid comp nent in the form of proje tions w hich cons itut e a pu ctur hazard t o the ride

should be prot ect ed Thesiz an sha e of the en prot ection hasnot be n s ipulat ed, but an adeq at e

sha e shal be given t o a oid pu cturing of the body S r w thr ads w hich cons itut e a pu ctur

hazard shal be l mit ed t o a protrusion length of one major diamet er of the sc ew bey n the int ernaly

thr aded mating p rt

NOTE Han le ar en s are covered in 4.7.2

4.6 Brakes

4.6.1 Braking systems

A bicycle shal be eq ip ed with at leas two in ependently actuat ed braking sy st ems A t leas one

shal o e at e on the front w he l an one on the r ar w he l The braking sy st ems shal o e at e without

bin ing an shal be ca a le of me ting the braking pe formanc r q ir ment of 4.6.8

Brake blocks containing asbest os shal not be pe mitt ed

4.6.2 Hand-o erated brakes

4.6.2.1 Brake leve position

The brake leve s for front and r ar brakes shal be p sitioned ac ording t o the legislation or cust om an

practic of the cou try in w hich the bicycle is t o be sold, an the bicycle man factur r shal s at e in the

man factur r’s ins ructions w hich leve s o e at e the front an r ar brakes [se also Clause 5, it em b)]

4.6.2.2 Brake leve g r ip dimensio s

a) The brake leve simiar t o ty e A or ty e B

The dimension, d, measur d betwe n the out er surfac s of the brake leve in the r gion int en ed for

contact with the ride ’s f ing ers an the han lebar or any othe co e ing pr sent hal co e a dis anc

of not les than 40 mm as shown in Figur 2 a) an Figur 2 b) and conform t o the folowing:

— on bicycles on w hich the minimum int en ed height of the sad le is 6 5 mm or mor , d shal not

ex ce d 9 mm;

— on bicycles on w hich the minimum int en ed height of the sad le is les than 6 5 mm, d shal not

ex ce d 7 mm

Conformanc shal be es a lshed b the method detaied in ISO 42 0-4:2 14, 4.1.1 The rang e of

adjus ment on the brake leve should pe mit these dimensions t o be o tained

NOTE S e Clause 5, item c) in relation to the minimum int en ed height of the sad le

b) The brake leve simiar t o ty e C

It shal be p s ible t o f it he dimension g ug e shown in ISO 42 0-4:2 14, Figur 3 o e the brake leve (or

a se on ary brake leve ) an the han leb r grip or any othe co e ing in at leas one p sition betwe n

p int B an C in icat ed in Figur 2 c), without causing any mo ement of the brake leve t owards the

han leb r The dimension d shal not ex ce d 1 0 mm

Conformanc shal be es a l shed b the method detai ed in ISO 42 0-4:2 14, 4.1.2 The rang e of

adjus ment on the brake leve should pe mit these dimensions t o be o tained

Dimensions in milimetr es

C point of 2 mm (in case of an ex tension brake lever, 1 mm) fr om the en of the lever

d brake lever g rip dimension

L distance b tween the centr e of the lever pivot an the lever tip en

Figure 2— Brake lever grip dimensio s

4.6.3 At achment of brake as embl y and cable r equirements

Ca le pinch b lt shal not seve any of the ca le s ran s w hen as embled t o the man factur r’ s

ins ructions In the event of a ca le fai ng, no p rt of the brake me hanism shal inadve t ently inhibit

the rotation of the w he l

The ca le en shal eithe be prot ect ed with a ca that shal withs an a r mo al for e of not les than

2 N or be othe wise tr at ed t o pr vent u ravel ng

NOTE S e 4.3in relation t o fastener

4.6.4 Brake-block and brake-pad as embles — S curity test

The friction mat erial shal be se ur ly at ached t o the holde , b cking plat e, or shoe an the e shal be

no faiur of the braking sy st em or any component the eof, and the brake shal me t the pe formanc

r q ir ment of 4.6.8 w hen t est ed b the method spe if ied in ISO 42 0-4:2 14, 4.3

4.6.5 Brake adjustment

Each brake shal be eq ip ed with an adjus ment me hanism, eithe man al or a ut omatic

Each brake shal be ca a le of adjus ment with or without the use of a t ool t o an eff icient o e ating

p sition u ti the friction mat erial has worn t o the point of r q iring r plac ment as r commen ed in

the man factur r’ s ins ructions Also, w hen cor e tly adjust ed, the friction mat erial shal not contact

anything othe than the int en ed braking surfac

The brake blocks of a bicycle with rod brakes shal not come int o contact with the rim of the w he ls

w hen the st ee ing angle of the han leb rs is set at 60 nor shal the rods bend, or be twist ed aft er the

han leb rs ar r set t o the c ntral p sition

4.6.6 Hand-o erated braking -system — Str eng th test

When t est ed b the method desc ibed in ISO 42 0-4:2 14, 4.4, the e shal be no faiur of the braking

sy st em or of any comp nent the eof

4.6.7 Back-pedal braking system — Str eng th test

4.6.7.1 General

If the b ck-pedal braking sy st em is f itt ed, the brake shal be actuat ed b the o e at or’ s fo t a plying

for e t o the pedal in a dir ction o p sit e t o that of the drive for e The brake me hanism shal fu ction

r g rdles of any drive g ear positions or adjus ment The dife ential betwe n the drive an brake

p sitions of the c ank shal not ex ce d 60°

The measur ment shal be taken with the c an held a ains each p sition with a pedal for e of at leas

2 0 N The for e shal be maintained for 1 min in each p sition

4.6.7.2 Req irement

When t est ed in ac ordanc with ISO 42 0-4:2 14, 4.5, the e shal be no fai ur of the brake sy st em or

any comp nent he eof

4.6.8 Braking per formanc e

4.6.8.1 General

Two t es methods ar spe ified t o det ermine braking pe formanc an ex e ienc has shown that

eithe method is suita le and eithe can be used One t es method is the track t es in w hich braking

dis anc is measur d dir ctly with the pro r s ivecharact eris ics of the brakes being self-evident The

alt ernative t es method is a machine /rig b se t es in w hich braking for e is measur d an , from w hich,

braking pe formanc v luesar calculat ed The pro r s ive charact eris ics of the brake ar det ermined

b l nearity measur ment A f inal, simple track t es che ks for smo th, safe, st op ing charact eris ics

Whicheve method is used, the e shal be complanc with 4.6.8.1.1 or 4.6.8.1.2

NOTE S e ISO 42 0-4:2 14, 4.6.5.7 item h), t est method — simple track test

4.6.8.1.1 Track test

When tes ed in ac ordanc with ISO 42 0-4:2 14, 4.6.3, the bicycle shal fulf il the r q ir ment

shown in Ta le 2

Table 2 — Brake test velocities and braking distances

Table 3 — Calculated braking performance value

4.6.8.2 Smo th, safe-sto character istic

The bicycle shal show smo th, safe-st op charact eris ics with r g rd t o the int en ed use of the bicycle

an the a i ity of the ex e t ed use of thebicycle

a) F or the track t es , smo th, safe-st op charact eris ics ar def ined as st op ing within the r q ir d

dis anc s without oc ur enc of any of the folowing:

1) ex ces ive ju de ing;

2) front w he l locking;

3) bicycle o e turning (r ar w he l lf ing u control a ly);

4 ) ride ’ s los of control;

5) ex ces ive side-skid causing the ride t o put his fo t t o the grou d t o r tain control

W ith c rtain ty es of braking sy st em, it might not bep s ible t o a oid entir ly some skid ing of the

r ar w he l d ring braking; this is conside ed ac epta le pro ided that it em 4 ) or it em 5) a o e do

not oc ur asa r sult

Back pedal brakes shal ad itionaly comply with the lnearity t es of ISO 42 0-4:2 14, 4.6.4

b) F r the machine t es , smo th, safe-st op charact eris ics ar def ined b complanc with the

l nearity r q ir ment spe if ied in ISO 42 0-4:2 14, 4.6.5.3 an the simple track t es desc ibed in

ISO 42 0-4:2 14, 4.6.5.7 it em h)

4.6.8.3 Ratio betwe n wet and dry braking per formanc e

F or city an tr k ing, y ung ad lt, and mou tain bicycles, in orde t o ensur safety for b th wet an

dry braking, the ratio of braking pe formanc wet/dry shal be gr at er than 4:1

The methods for calculating this ratio ar given in ISO 42 0-4:2 14, 4.6.3.1 it em c) for the track t es

an in ISO 42 0-4:2 14, 4.6.5.7 it em g) for the machine t es

NOTE 4.6.8.3is not ap lica le t o racing bicycles

4.6.9 Brakes — He t-resistanc e test

4.6.9.1 General

This t es a pl es t o al disc an h b brakes, but it a pl es t o rim brakes only w he e they ar k own or

suspe t ed t o be man factur d from or inclu e the mo las ic mat erials

Each brake on the bicycle shal be t est ed in ivid aly, but w he e the front and r ar brakes ar identical,

only one brake ne ds t o be t est ed

4.6.9.2 Requirement

Throughout the t es desc ibed in ISO 42 0-4:2 14, 4.7, the brake leve shal not t ouch the han leb r

grip, the o e ating for e shal not ex ce d 1 0 N, an the braking for e shal not deviat e out ide the

rang e 6 N t o 1 5 N

Immediat ely aft er ha ing be n subje t ed t o the t es desc ibed in ISO 42 0-4:2 14, 4.7, the brakes shal

achieve at leas 6 % of the braking pe formanc w hich was r corded at the highes o e ating for e

used d ring the pe formanc t es s ISO 42 0-4:2 14, 4.6.5.7 c) it ems 1)an 2)

4.7 Steering

4.7.1 Handlebar — Dimensio s

The han leb r shal ha e an o e al width betwe n 3 0 mm an 1 0 0 mm u les national r gulations

dictat e othe wise Adjus the handlebar height t o it highes normal riding p sition an the sad le t o

it lowes normal riding p sition as spe if ied b the man factur r [se Clause 5, it em c)] Measur the

ve tical dis anc from the c ntr an t op of the han leb r grips t o a p int w he e the sad le surfac is

int erse t ed b the seat pos a is ( e Figur 3) This dimension shal not ex ce d 400 mm

Figure 3— Vertical distance betwe n the handlebar grips and the se t surface

4.7.2 Handleba g rips and plug s

The en s of the han leb r shal be f itt ed with han grips or en plugs When t est ed b the method

desc ibed in ISO 42 0-5:2 14, 4.1.1 an 4.1.2, the han grips or plugs shal withs an the spe if ied

r mo al for es

4.7.3 Handleba stem — Insertion-depth mar k or positi ve sto

The han leb r st em shal be pro ided with one of the two folowing alt ernative means of ensuring a

safe inse tion depth int o the fork st ee e

a) It shal contain a pe manent, transve se mark, of length not les than the ext ernal diamet er of the

st em that clearly in icat es the minimum inse tion depth of the han leb r st em int o the fork st ee e

The inse tion mark shal be locat ed at a p sition not les than 2,5 times the ext ernal diamet er of

the han leb r st em from the b tt om of the st em, an the e shal be at leas one st em diamet er’ s

length of contiguous, cir umfe ential st em mat erial below the mark

b) It shal incorp rat e a pe manent st op t o pr vent it from being drawn out of the fork st ee e such as

t o lea e the inse tion les than the amou t spe if ied in it em a)

4.7.4 Handleba stem to for k ste rer — Clamping r eq irements

The dis anc g ( e Figur 4) betwe n the t op of the handleb r st em an the t op of the fork st ee e t o

w hich the han leb r st em is clamped shal not be gr at er than 5 mm

The up e p rt of the fork st ee e t o w hich the han leb r st em is clamped shal not be thr aded

The dimension g shal also ensur that he pro e adjus ment of the st ee ing sy st em can be achieved

NOTE For aluminium an composit e fork ste rer, the avoidance of an int ernal device that could dama e the

internal surface of the fork ste rer is recommen ed

Figure 4 — Clamping betwe n the handlebar stem and fork steerer

4.7.5 Ste ring stabiity

The st ee ing shal be fr e t o turn through at leas an angle of θ

1eithe side of the s raight-ahead

position and shal exhibit no tight p t , s ifnes , or slack es in the bearings w hen cor e tly adjust ed

The v lues ar given in Ta le4

A minimum of 2 % of the t otal mas of the bicycle and ride shal act on the front w he l w hen the

ride is holding the han leb r grips an sit ing on the sad le, with the sad le an ride in their mos

r arward p sitions

NOTE R ecommen ations for ste ring g ometry are given in An e A

Table 4 — Values of steering angle

A ng les in deg r ees

Mou tain bicycles Racing bicycles

Ste ring angle

θ

1

4.7.6 Ste ring as embl y — Static str eng th and secur ity tests

4.7.6.1 Handlebar stem — Lateral bending test

4.7.6.1.1 General

This t es is int en ed for st em man factur rs w ho do not prod c han leb rs

4.7.6.1.2 Req irement

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4.2, the e shal be no c acking or fractur of

the st em an the pe manent deformation measur d at the p int of a plcation of the t es for e an in

the dir ction of the t es for e shal not ex ce d 1 mm

Han leb r st ems can influenc t es faiur s of han leb rs but han leb rs do not usualy influenc t es

faiur s of st ems F or these r asons, a han leb r is alway s t o be t est ed mount ed on a st em but st ems

can be t est ed with a sold b r in plac of a han leb r

4.7.6.2 Handleba and stem as embl y — Lateral bending test

4.7.6.2.1 General

This t es is for man factur rs w ho prod c handleb rs an st ems or for cycle man factur rs

4.7.6.2.2 Req irement

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4.3, the e shal be no c acking or fractur of

the han leb r, st em, or clamp-b lt an the pe manent deformation measur d at the point of a plcation

of the t es for e shal not ex ce d 1 mm

4.7.6.3 Handlebar -stem — F rward bending test

4.7.6.3.1 General

Con uct he t es in two s ag es on the same as embly as folows

4.7.6.3.2 Req irement for stag e 1

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4.4.1, the e shal be no visible c acks or

fractur s an the pe manent deformation measur d at the p int of a plcation of the t es for e an in

the dir ction of the t es for e shal not ex ce d 1 mm

4.7.6.3.3 Req irement for stag e 2

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4.4.2, the e shal be no visible c acks or

fractur s

4.7.6.4 Handleba to handlebar stem — Tor sio al secur ity test

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4.5, the e shal be no mo ement of the

han leb r r lative t o the han lebar st em

4.7.6.5 Handleba stem to for k ste rer — Tor io al security test

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4.6, the e shal be no mo ement of the

han leb r st em r lative t o the fork st ee e

4.7.6.6 Ba end to handleba — Tor sional security test

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4.7, the e shal be no mo ement of the b r

en in r lation t o the han leb r

4.7.6.7 Aerod ynamic ex tensio s to handlebar — Tor io al security test

When a han leb r is suita le for use with ae odynamic ext ensions, theext ension/han leb r/han leb r

st em as embly shal withs an the folowing se urity t es

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4.8, the e shal be no mo ement of the

ext ension in r lation t o the han leb r and of the han leb r in r lation t o the han leb r st em

4.7.7 Handlebar and stem as embl y — Fatig ue test

4.7.7.1 General

Han leb r st ems can influenc t es faiur s of han leb rs an , for this r ason, a han leb r shal alway s

be t est ed mount ed on a st em, but it is pe mitt ed t o t es a st em with a sold b r in plac of the han leb r

an bar en s with dimensions cor esp n ing t o han leb rs /bar en s suita le for that st em

When the fatigue t es is for the st em only, the man factur r of the st em shal spe ify the ty es an siz s

of han leb r for w hich the st em is int ended an the t es shal be b sed on the mos seve e combination

Con uct he t es in two s ag es on the same as embly

4.7.7.2 Requirement for stag e 1 and stag e 2

When t est ed b the method desc ibed in ISO 42 0-5:2 14, 4 9.1 or 4 9.2, the e shal be no visible c acks

or fractur s in any p rt of the han leb r an st em as embly or any b lt faiur

F or comp sit e han leb rs or st ems, the ru ning displac ment (peak-t o-peak v lue) at the point

w he e the t es for esar a pled shal not inc ease b mor than 2 % of the initial v lues

4.8 F rames

4.8.1 Suspensio -frames — Special requir ements

The design shal be such that if the spring or dampe fais, the tyr shal not contact any p rt of the

frame or the as embly car ying the r ar w he l shal be ome detached from the r s of the frame

NOTE S e ISO 42 0-6:2 1 , An e C

4.8.2 F rame — Impact test ( aling mas )

When t est ed b the method desc ibed in ISO 42 0-6:2 1 , 4.1, the e shal be no visible c acks or

fractur s of the frame

The pe manent deformation measur d betwe n the a is of the w he l a les (he w he lb se, se

ISO 42 0-6:2 1 , 4.1 an Figur 1)shal not ex ce d the folowing v lues:

a) 3 mm w he e a fork is f itt ed;

b) w he e a d mmy fork is fitt ed in plac of a fork, the v lues ar given in Ta le 5

NOTE S e ISO 42 0-6:2 1 , An e A

Table 5 — Values of permanent deformation (fal ing mass)

Dimensions in milimetr es

4.8.3 F rame and fr ont for k as embl y — Impact test ( aling frame)

When t est ed b the method desc ibed in ISO 42 0-6:2 1 , 4.2, the e shal be no visible c acks or

fractur s in the as embly, and aft er the se on imp ct, the e shal be no sep ration of any p rt of any

suspension sy st em The pe manent deformation measur d betwe n the a is of the w he l a les shal

not ex ce d the v lues spe ified in Ta le 6

Table 6 — Values of permanent deformatio (fal ing frame)

Dimensions in milimetr es

4.8.4 F rame — Fatig ue test with pedaling for c es

When t est ed b the method desc ibed in ISO 42 0-6:2 1 , 4.3, the e shal be no visible c acks or

fractur s in any p rt of the frame an the e shal be no separation of any p rt of the suspension sy st em

F or comp sit e frames, the run ing displac ment (peak-t o-peak v lues) at the point w he e the t es

for esar a pled shal not inc ease b mor than 2 % of the initial v lues ( e ISO 42 0-3:2 14, 4.6)

4.8.5 F rame — Fatig ue test with hor izo tal for c es

When t est ed b the method desc ibed in ISO 42 0-6:2 1 , 4.4, the e shal be no visible c acks or

fractur s in the frame an the e shal be no separation of any p rt of any suspension syst em

F or comp sit e frames, the ru ning displac ment (peak-t o-peak v lue) at thep int w he e the t es for es

ar a pl ed shal not inc ease b mor than 2 % of the initial v lues ( e ISO 42 0-3:2 14, 4.6)

4.8.6 F rame — Fatig ue test with a vertical forc e

When t est ed b the method desc ibed in ISO 42 0-6:2 1 , 4.5, the e shal be no visible c acks or

fractur s in the frame an the e shal be no separation of any p rt of the suspension syst em

F or comp sit e frames, the ru ning displac ment (peak-t o-peak v lue) at thep int w he e the t es for es

ar a pl ed shal not inc ease b mor than 2 % of the initial v lue ( e ISO 42 0-3:2 14, 4.6)

4.9 Front for k

4.9.1 General

4 9.2, 4 9.4, 4.9.5, an 4 9.6 a ply t o al ty es of fork

In the s r ngth t es s in 4.9.4, 4.9.5, 4 9.6, an 4 9.7, a suspension fork shal be t est ed in it fr e,

uncompr s ed length con ition

4.9.2 Me ns of locatio of the ax le and whe l retentio

The slot or othe means oflocation for the whe l a le within the front for k shal be such that when the

a le or cones ar firmly a ut ing the t op fac of the slot , the front whe l r mains c ntral within the for k

The front fork an w he l shal also fulf il ther q ir ment of 4.1 4 and 4.1 5