Bsi bs au 050 4 7 1 1992 (iso 5995 2 1988) scan

a

e

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a

1

Part 4 Rim pr ofi es and di me n si on s

rims

19 9 1

1988

TW- 6H

16 p ages

BS AU 50 : Part 4 : Subs ectio n 7.1:1991

Ti Su bse cti on oft his Par t ofBS AU 5 ,prepa red u der the d ir ectio ofthe

Au to mo bi l e Sta nd a rd s Polcy Commite e , is id ent ica l with IS 5 9 -2 : 19 8

‘Mop ed tyr es a d rims - Pa rt 2 : Rims ’, pu bl ish e d b the Int er natio al

Org ani z ati o n for St and a rd iza tio (I SO) T h e cor e sp n din g tyre d eta ils are d ea lt

with i n Pa rt 1 (Su bse ctio 7 i) Other Pa rts of the stand a rd a re:

Pa rt 1 Ty res

Pa rt 2 Whe el s a d rims

Part3 Valves

Pa rt 4 ofB S AU 5 (co e rin g ri m profil e s a d di mensi o ns) has be n introd uc d to

assist cros -re fe re n cin g bet we n tyre spe ificatio s a d the core sp n din g r im

spe ificat io s Su bse ction s ofPar t 4 wil l part ially su er sed e the inform a tio

co ta ined in B S AU 50 : Pa rt 2 : Se cti on lb : 19 0 which ha s be n amen ed

ac co rdi ng ly

Cros -re fe re n c e s

Inter na tiona l s tand ard C orr sp onding Br itish Stan ard

BS AU 5 Ty res a d whe ls

Pa rt 1 Ty res

Se ctio 7 Mo ed tyres

Su bse ctio 7.1: 19 9 S e cificatio for t yr e d esig at io s,

dime n sion s a d l oa ra tin s

( d entica l)

Pa rt 4 Rim profil e s a d dime n sion s

Se t io 6 Motorc yc le rims

Su bse cti on 6.3 : 19 1 Spe cificatio for code d esig a ted

series (d iam eter code s 4 to 12 ) ri ms

( d entica l)

IS 5 9 -1: 19 2

IS0 6 0 54 -2 : 19 0

The %ch n ical Commite e ha s re vie we d thep ro v i si o ns ofIS0 391 a d

IS0 4 2 4 9-3, towhich ref renc is ma e in the tex a nd h s d ecid ed that they are

acc ptable for u se in co ju ct io With t his sta nd a rd

Complanc wit h a Bri ti sh Standard d oe s no t ofit self co nfer immunity fr om

l e g a l o l i g ati on s

e

-BS AU 50:Part 4 :Su bse c ti on 7.1 : 1991

C ontents

N a tio a l for eword

Pag e

Insid e fro t co er

Spe ci fi c ati on

3 G enera l

4 Desig at io a d markin g

7 Per mit t ed rim widt hs

Annexes

A Perm itted ri m width cod es for t yr es used o mo e ds a d sm a ll cu ic

ca pacity m otorcycles d esig ed for a max imu m spe d of10 k m /h

B Me th ods for m easurin a d g au g i ng mo e d rim d im ensio s 5

1 Di me nsi o ns ofta ered be ad seat rims (st raig t sid e) 2

2 Spe ified

rim

4

ables

A 1

B 1 Perm itted rim width cod es

%De widt hs for mo e d rims

4

7

Figur s

1

B Rim d im ensio s Con tou r ofta ered bea seat rims(st r a ig t sid e)

B.2

B.3

B.4

B.5

B.6

B.7

B 8

B.9

B 10

Rim measur em ent

?a pe d eta ils

?a pe ma ndr el

Vernier gau ge

( /2

mm grad ua tio )

Vernier gau ge d eta ils for m easurin principle for fla nge heig t , G

Use ofver nier with sp c r

M easu ri ng principle ofd im ensio L1

Cal l i p er ver nier for m ea surin d im ensio LI

M easu ri ng principle ofbea d se at angle B

B 1 'I o1 for m ea sur in a ngle ß

B 12 Cal per vernier for m ea surin rim widt hs

2

5

6

6

7

7

8

8

9

9

9

9

10

INT ERNATIONAL STANDARD

IS0 5 9 -2 : 19 8 (E)

-P a r t

2:

Rims

S cope

1

O

Ti -,- p rt of I

5 9 saecifies L .e dime sio s o f ta ere c-e (

s eat rims (st raig t sid ifor mo e t y res It ap ples to t hose rim

c ont our dime sio s n ce ss ary for t y re mo nt in a nd fitin of

th t y r e tot he rim, t erms for whic are use in ac corda nc e with

IS 0 31 1

A nn x A prov id s d t ails o p r mit t ed rim width c od s for

t y res use d o mo e s a nd small c ubic ca pa cit y mot or c y c les

d sig e for a ma ximum spee of 100 k m/ h A nn x B p rese t s

met ho s for measurin a nd ga ugin dime sio s of t a p ere

b ead s eat rims for mo e s

NO TE - Tyre d sig at io , dime sio s a d lo d r atin s are giv n in

IS05 9 -1

2 Normative r ef er enc s

The folowin st a ndards c ont a in prov isio s which, t hrou h

ref ere c e in t his t ex t , c ons t ut e prov isio s of t his p rt o

IS0 5 9 At th t ime of p blc a t io , t he e it io s in ic at ed

w ere valid Al st anda rds are su jec t tore isio , a d part ies to

agre me t s b as ed o t his p rt of IS 0 5 99 are e c ourage to

inv es ga t e th p s ibi t y of a plyin t he most rec ent e it io s

of t he st a ndards lste b low Memb ers of IEC and IS ma in-

tain re ist ers of c ur rent ly v a lid Int erna t io a l St anda rds

IS0391 1 : 19n , Wh els/ims - Nome clature, deign to ,

marking a d unis ofme sureme t

IS0 4 49 3 : 1986, Motorcycle tyre a d rims (Code-de ign ted

s rie ) - Parì3 : Rims

IS059-1 : 198 , Mo ed tyre a d rims - Part I: Tyre

IS06054 -2 : 196, Motorcycle tyre a d rims (diameterc de 4

to 12)- s o ter typ - ~ r t.2: Rims

3 Gener al

3.1 Rim co tour

T he rim o th sid of th ty re sha ll have a smo th c onto r f re

of sharp ed ges,

3.2 Rim valve h le

T he rim va lve h le sha ll b c ent red o t he b tom of th rim

wel On th tyre side, th e dge s shall b e rou d d or

c ha mf ere , w hie o th h b si de, t he e g s sha ll b e f ree of

b rrs whic c ould d ma e t he v lv

3.3 Definition of H1 an L1

Hl re rese t s th u o struc t ed d pt habove th rimb se, with

th rimt a p e f if t t ed to p rmit itin of t he t yre

LI re rese t s th wel width a b ov th rimt ap e

T he r ir n sha ll b e d sig at ed b its n mina l diamet er c od a nd

n mina l width (or examp le 1 x 30,5)

5 Rim contour s

Dime sio s a nd t oleranc es of t a p ere b ead sea t rims are giv en

in ta ble 1

6 Rim diameter s

Nomina l rim dia met er cod es, sp c if ie rim diamet ers a nd

mea surin r ir ndiamet ers are giv en in t a ble 2

T he p rmitt ed rim width c od s for mo e ty res are giv en in

t a ble 3

Nominal r im

w idth cod

n

IS059 95-2 :19 8 (E)

G

+ 0,5

r nin

A

-3 ,5

3

3

I

Fig re 1 - Co to r of tapered b e a d s e a t rims (str aig t side )

T able 1 - Dimensio s of tapered be d s at rims (str aig t side )

Dime sio s in mi metr es

1)

For rim diamet ers le ss th n or e ua l to 4 0 m m , increa se th d pth HI ,inb 1mm

2) Dime sio HI in c nju ctio with dime sio L.1 d fin s th u o str ucte s p ac above th nip le h ad s, with th t a p e fite to p rmit

s tisfa tory fitin of th t y re The a tu l w l d pth of th rim s a ll b d ter min d at th rimma ufa tur er ' dis r etio in ord r to a c hieve this

o je tiv

T able 2 - Spe if i d rim diameter s an me su n r im

diameter s

Dime sio s in mi metr es

I Spe ified rim Me surin rim

Nominal rim

37,l

32,5

4 5,6

43,3

48,7

44.1

54.9

1) Tolera nce o th me as ure d b a s e at cir cumfer en e

(E x me s r i g rim diameter ) of th rim is

m m

IS059 5-2 19 8 (E)

T able 3 - Per mited r im width co de ( mo e d ty re )

S

Co e

Nominal rim

diameter co e

1.2 - 1.3 - 1.5

1.2 - 1.3 - 1.5 - 1.6

1.3

-1.5

- 1.6

-

15

2 - 3,5- 3 - 3

3,5- 3 - 3

212

2

3/4

34

- 3

Divid d rims 21 Dr op-c ntr e rims 21

-

-2.5

-

2.3

1) Se IS 4 4 - for d t a ils

2) Se IS0 6054 -2 for d t a ils

3) MT c nto r

Nominal se ct io

width

SN

Co e

2

2 1 4

2 12

2 314

3

3 i 4

IS05s-2 : I988 (EI

Permited rim width c ode s

-Cy lin r ic l rims

1.2 - 1.3 5

1.20 - 1.3 5 - 1.5 - 1.6

1.35 - 1.5 - 1.60 - 1.8 5

1-5 - 1.6 - 1.8

1.6 0 - 1.8 5 - 2 15

1.8 ') - 2 15' )

( inf orma tive)

NO TE - IS05 9 -1giv s fu rthe r i n fo rma ti o n on mo ed tyre

IS05 9 -2 :19 8 (E)

(infor ma tive)

This a n x d fin s met ho s of mea surin a d ga ugin dime -

s io ns of t ap ere b e ad rims for mop eds

St a nda rdiza t io of rim dime sio s app lies o ly to t hose c on-

to r dime sio s n cessary for t y re mo ntin a nd t he fitme t of

th t y r e to th rim

B.2.1 General

Al me sureme ts sha ll b ma e o rims re d for tyr e mo nt-

in a d plac ed o flat surfa ces For a cc ura t e me asureme ts,

g u e and tap e s sha ll alway s b s e t p erp n icular to th r im

f la ng s o b th b a seats

Q

B.2.2 Main rim dimensio s to be me sured

Th main r imdime sio s whic shall b me s ure d a d g u e

are in ic a te in fig r e B.1

4

t

A Sp cifie rimwidth

L.1

W el width above rimt a p e

( al

Cir cumfer en e mea surin p int o th tyr e b ea d s e at = 1.5 mm

p Bea d s at width

Rg F la ng ra iu

R3 Bea d se at radiu

D Sp cifie rimdiamet er

D1 Me s r i g rim diamet er

G Fla g h ig t

Hi Un b tru te d oth above r irn b as e with r irn ta e fite to o rmit R4 rad ius to

Fig re B - Rim dime sio s

Ta pe le gt h, L

4

I IS0 5 9 -2 : 19 8 (E)

,

B.3

Methods of me a s ur ing spe cifie d diameter

a d be d s at cir cumf er enc

B.3.1 First method

T he rim mea sureme t is ma e a rou d a st anda rd level cir -

c umfere ce rela t ed to mandrel c irc umfere ce A t ape as

i ust rat ed in f ig re 8.3is u sed , c re b in t a ke to c ho se t he

c rrect t a p e for th rim to b e me sure T he t ape shall b

marke with d t a ils of rim width c d a nd n min l rim

diamet er T he ref ere c e t emp ra ture shall b 2 'T

C he ck (ga ug ) t he t ape o t he a ppr opriat e mandrel a nd surfa ce

plate, with th t a p e flat T he t a p e s hal c nta t th rim o b th

b ea d s eats e ua lly, Ta e w idt hs s hal b in ic a t ed in t a ble B 1

T he st ra ig t e d of t he t ape shall c onta c t t he ot her e d within

th n t c h

It is rec omme d d t ha t , ex c ept for ex perie ced riminsp ec t ors,

two p erso s are n e de to ma e t he me asure me t

-o e

h ldin t he t ape p sit io a nd a ply in n t mor e tha n 5 N p l

o t he e d s, t he ot her t a kin th re din s

Fig re 8.2

-Rim me asure me nt

Dime sio s in mi metr es

Fig re 6.3 - T ape detais

Ta b le B l - T ape w idths for mo ed r ims

Dime sio s in mi metr es O

3

B.3.2 Se o d method

Mea sure t he c irc umf erenc e of th u p r p rt of b th f la ng s b

me ns of an in x t ensible st eel t a pe-ln (10 rnm w idt h, a nd

0,3 mm t hickn s with 0,5 mm gra dua t io s) ta kin care th t it

c ont ac t s th r im Rec ord th two mea sureme t s UoA a nd Uo s

Usin a a ppr opriat e v rnier g u e, as i ust r a t ed in fig r e 6.5,

me sure th h ig t of b th f la ng s in at lea st o r p int s e ual-

ly sp a ced a rou d t he circumfere c e, ta kin care th t th c or-

rec t prot usio is use (1,5 rnrn for mo e rims) Calc ulat e t he

a e ra es o th tw f la ng h ig t s GA and GB (s ee fig re B.6)

C culat e th me asure c irc umf erences ü1A a nd u, b t he

folowin e ua t io s:

U1A = UOA - n G

= UOB - R GB

NOTE -Wh n r ims ha ve a difer en e of mor e th n 2 mm b tw ee th

two o ter cir cumfer en e U, a d U oa, th vernier g u e s o ld b e

a pro r i tely a ple a d a sp ace r with a t hic kn s, t,c te n for th

difer en e incir cumfer en e

I %A - 1

2n

I=

s o ld b interp s d b tw ee th to of th s orter fla g a d th ver-

nier ga ug (s e e fig re 8 7 )

Dime sio s in mi metr es

1 Sur fa e rou h e s va lu at th dis r etio ofth p rs n c e kin

NOTE -Tolera nc e o D, mea sureme t is -8,%

Fig re B.4- T ape man r el

Dime sio s inmi metr es

Fig re B.5 - V er nier ga uge (1/2 mm gr ad atio )

Dime sio s in mi metr es

Fig re B.6 - V er nier ga uge detais for me as urin p nciple for f l n e heig t, G

Sp c r

Fig re 8.7 - Us e ofve rnier with spacer

O

a

Th w el width ab o ve t he r im ta e , LI, s hal b me sure in a cc ordance with th p nc iple d mo st rat ed in fig r e B.8 and th to l

sh wn in fig r e B.9

LI I P

L

Fig re B.8 - Me su n p nciple of dime ns io n LI

Fig re B.9 - C a llp e r vernie r for me a s urin dime ns io n L,

8.3.4 Be d s at an le, p

Th b a se t a gle, ß, sha ll b me sure in ac corda nc e with t he princ iple d mo st ra te in fig r e B.10 and th to l sh wn in fig r e

B.l ( Se e also th n t e in 8 3.2.)

Dime nsio s in mi me t r e s

Fig re B l - T o l for me surin an le ß

IS0 59 95-2 : 19 8(E)

B.3.5 Other rim dimensio s

8.3.5.1 Rimwidth

T he rim width at th b a d se t Al, and t he sp c if ie rim w idt h, A, sh uld b mea sure with a ca llp er ve rnier (se f ig re B.12)

Fig re 8.12 - Cal p r v rnier for me surin rim widths

B.3.5.2 Rim insp ctio

T o g u e (c hec k) f lang h ig t a nd w el d pt h, a v rnie r g u e as sh w n in f ig re B.6 sh uld b use d

BS AU 50 :Part 4 :Subse t ion 7.1 : 19 9 1

Publ cat ion(s) refe r d to

Se national foreword

BS AU 50 :

1991

IS0 599 5-2 :

1988

Thi B tish Sta dard, h vin

b e pre ared u der th

dir ect io of t he A ut omobie

Sta dards P ol icy Com m it t ee,

was p blsh d u der the

a th rity of th Sta dards

Boa rd a d com es into efect o

3 Ja u ry 19 2

O BSI 19 1

Th fol iowin BSI refere ces

relate to the wor k o this

sta dard:

Comm it t ee refere ce A UE/4

Draft for comme t 8 /7 7 6 DC

ISBN O 5 0 20 3 7 3 5

T h e pr ep r at io ofthi s Br itish St a nd r d was entrusted b theAu to mo bi l e

St an ar ds Polcy Commite e (AUE/ to Ech ical Commite e AUE/4, u po

which the fo l l o w i ng b d ies wer e r epr esent ed:

Agricultura l En ine r s’Asso ci ati o n

Au to mo b i l e As ociat ion

British In ust r ial T ru ck Asso c i ati o n

British Pres ur e Gaug e Ma nufa cturers’Asso c i ati o n

British Ru bbe r Ma nufa ctureis’Asso ci ati o n

Bus a d Co ac h Co u nc i l

Dep r t m ent ofTra nsp rt

Reig t Tra nsp rt Asso c i ati o n

Institute ofRo d Tr ansp rt En ine r s ( ncorpora ted )

Motor Cycle Ind ustry’s A ssocia tio ofGre t Br ita in L td

Motor In ust r y R esea rch Asso c i ati o n

Nat io al Ty re Distr ib tors’ Asso c i ati o n

R etr ea d Ma nufa ctur er s’ As ocia tio

Ro d H au lag e Asso ci ati o n Lt d

Royal Auto mo bi le C lu

S ciety ofMo to r Ma nufa ctur er s a d Tra d ers Lt d

Amen ment s is ued sinc pu l cation

A md N o Da te

Tkxt afe t ed

BSI, 2 Pak Stree Lon on WlA2BS

BSI, Linfor d Wo d, Mito K ey es MK14 6L