Txhim kho koj lub log tsheb tuaj yeem yog txoj hauv kev pheej yig tshaj los txhim kho koj txoj kev caij tsheb, tab sis koj puas xaiv? Peb rhuav tshem lawv li cas thiab ua haujlwm
Nws zoo li kev tshawb fawb tsis tseeb, tab sis kev qhia txog cov khoom siv hnub nyoog ntawm qhov chaw mus rau kev tsheb kauj vab log tsheb tuaj yeem ua rau lawv muaj kev txawj ntse virtual. Thaum koj caij raws txoj kev tiaj tus, cov roj hmab hauv cov log tsheb yuav cia li tawv kom txo tau qhov kev sib tw, tab sis thaum koj nres, nrawm lossis nqa ib lub ces kaum nws yuav soften los tsim tuav ntau dua.
Cov khawv koob los hauv daim ntawv ntawm graphene - cov khoom xav tsis thoob uas ua rau lub siab poob rau hauv kev tshawb fawb ntawm cov khoom siv. Graphene yog ib qho atom-thick txheej ntawm cov pa roj carbon monoxide uas yog lub teeb tsis txaus ntseeg, muaj zog thiab yoog raws. Nws tuaj yeem ua rau folding lub xov tooj ntawm tes, ua rau lub dav hlau sib zog thiab, er, qhov nyias nyias, feem ntau cov hnab looj tsis muaj zog (Bill & Melinda Gates Foundation tau pub nyiaj $ 100, 000 rau kev nqis peev rau hauv graphene los tsim kev tiv thaiv kev nyab xeeb nrog kev xav zoo dua).
Nws tseem tau teem sijhawm los hloov lub ntiaj teb kev caij tsheb kauj vab, suav nrog txoj kev tsheb, thiab koj yuav tsis tas tos kaum xyoo los sim nws cov teebmeem. Lub tuam txhab Italian Vittoria nyuam qhuav tau tshaj tawm cov qauv ntawm nws cov Corsa cov log tsheb nrov nrog ntxiv graphene hauv cov tread compound, thiab nws hais tias qhov tshwm sim yog 19% txo ntawm dov tsis kam piv rau nws cov thawj coj, nrog rau kev ua haujlwm zoo dua thiab kev txhim kho loj hauv tag nrho. ntev.
Thaum nws tseem ntxov dhau rau Cyclist los txheeb xyuas cov lus thov no, nws yog qhov pov thawj tseeb tias cov log tsheb, txawm tias yog ib qho ntawm cov khoom zoo nkauj tshaj plaws uas koj yuav pom ntawm lub tsheb kauj vab, yog qhov ua ntej ntawm kev txhim kho kev tshawb fawb thiab muaj kev cuam tshuam ntau dua. ntawm kev caij tsheb zoo thiab kev ua tau zoo dua li lawv feem ntau muab credit rau. Cov log tsheb zoo yog tej zaum qhov pheej yig tshaj plaws thiab hloov kho yooj yim tshaj plaws uas koj tuaj yeem ua rau koj lub tsheb kauj vab, yog li nws tsim nyog nkag siab me ntsis txog dab tsi nkag mus rau hauv cov roj hmab hoops.
Lub voj voog ntawm kev sib haum xeeb
Minmising rolling resistance, maximizing tuav, cushioning the ride, all while fending off the continual hem from glass, flint and pos – loges are impressive feats of engineering. Cov neeg tsim khoom yuav tsum sib npaug cov kev xav tau sib tw no thaum tsim cov log tsheb tshiab, thiab nws tsis yog txoj haujlwm yooj yim, raws li Benjamin Blaurock, tus thawj coj khoom lag luam rau Continental txoj kev log tsheb, piav qhia. 'Yog tias koj nce ib qho ntawm cov kev txwv no nws yuav cuam tshuam tsawg kawg ib qho ntawm lwm tus,' nws hais. 'Piv txwv li, ib qho nyuaj heev yuav txo qis dov tsis kam tab sis txo tuav, ntxiv rau nws yuav hnov zoo heev rau caij. Yog tias koj xav tau kev sib tsoo siab koj tuaj yeem ntxiv cov txheej tiv thaiv tuab, tab sis qhov ntawd ntxiv qhov hnyav, thiab thawb kom dov tsis kam.'
Cov kev cuam tshuam uas tsis tuaj yeem piav qhia qhov dav ntawm txoj kev log tsheb muaj. Ntawm ib kawg yog cov tawv tawv, hnyav, ruaj thiab tiv thaiv cov log tsheb zoo tshaj plaws rau kev ncig xyuas thiab kev mus ncig, qhov twg puncture kuj muaj qhov tseem ceeb dua li qhov nrawm nrawm thiab kev ua haujlwm. Ntawm qhov kawg yog super-light, grippy, supple log tsheb tsom rau cov neeg sib tw uas tau npaj los lees txais qhov kev pheej hmoo ntawm lub log tsheb thiab txo lub neej ntev rau qhov kev ua tau zoo ntxiv uas yuav ua rau lawv yeej lossis PB tshiab tuaj hnub sib tw.
Raws li Blaurock tau hais tawm, 'Nws yog ib qho tseem ceeb kom muaj kev xav zoo ntawm koj lub log tsheb, thiab lawv tuaj yeem cuam tshuam rau qib kev ua tau zoo
nyob rau hauv ib txoj kev tseem ceeb heev.' Nws kuj tseem ceeb rau peb tias qee tus neeg tau npaj lub plhaub tawm mus txog £ 2,000 ntawm lub log sab saum toj kawg nkaus, thaum qhov sib txawv ntawm tus nqi nruab nrab thiab tus nqi. -zoo log tsheb yog NW nyuam qhuav £50. Cov log tsheb sawv cev rau kev hloov kho pheej yig.
Nrog me ntsis kev sib cuag nrog txoj kev nto - tsawg dua tus ntiv tes xoo - yuav ua li cas lub log tsheb yuav ua rau muaj kev sib txawv ntawm kev caij tsheb? Tsis zoo li roob tsheb kauj vab log tsheb, qhov twg tus qauv tread yog qhov tseem ceeb rau kev tuav, txoj kev tsheb kauj vab cia siab ntau dua ntawm kev sib xyaw ntawm cov roj hmab thiab cov suppleness ntawm carcass. Nyob rau hauv ntub dej, ib txoj kev log tsheb yuav txiav los ntawm cov zaj duab xis ntawm dej (thiab tsis yog aquaplane nyob rau sab saum toj ntawm nws) thiab li no txawm tias ib tug tag nrho slick log tseem yuav muab txaus tuav kom koj upright. Txawm tias cov tuam txhab log tsheb lees paub tias muaj txhua yam ntawm cov qauv tread ntawm txoj kev log tsheb yog ntau dua rau kev puas siab puas ntsws ntawm tus neeg caij tsheb dua li txhua qhov kev txhawb nqa. Qhov no qhia tau hais tias qhov tseem ceeb npaum li cas ntawm kev tsim kho ntawm txoj kev log tsheb yog rau txhua qhov ntawm nws qhov kev ua tau zoo, yog li cia peb tev cov khaubncaws sab nraud povtseg.
Nyob zoo ib tsoom niam txiv kwv tij neej tsas sawv daws.
Tyres feem ntau yog kev sib dhos ntawm plaub yam. Qhov zoo ntawm cov ntaub ntawv siv rau txhua qhov no yog qhov tseem ceeb, tab sis nws yog qhov lawv cuam tshuam li cas uas txiav txim siab ua tau zoo. Ua hauj lwm los ntawm txheej txheej sab hauv, ua ntej los ntawm tread los yog roj hmab compound uas hu rau txoj kev. Tom ntej no feem ntau yog qee yam kev tiv thaiv txheej txheej thiab thaum kawg tuaj txog lub cev uas muab lub log tsheb nws cov qauv. Lub caij thib plaub yog lub raj sab hauv, uas yog tag nrho nyob rau hauv lub cev, xws li cov log tsheb, los yog haum raws li ib qho kev sib cais, raws li ib tug clinchers.
Tubeless tyres, piav qhia los ntawm German lub tuam txhab log tsheb Schwalbe ua 'lub thev naus laus zis ntawm lub neej yav tom ntej', ua rau qhov xav tau rau lub raj sab hauv thiab yog li txo qis kev sib tw los ntawm kev tshem tawm cov kev sib txhuam los ntawm cov raj thiab cov log tsheb. lub log tsheb rolls thiab flexes. Schwalbe thov nws Pro One tubeless log tsheb muaj 25% tsawg dua dov tsis zoo dua li cov log tsheb sib piv nrog lub raj sab hauv, uas qhia txog qhov cuam tshuam rau lub raj sab hauv ib leeg muaj nyob hauv lub log tsheb.
Rau hnub kev sib tw, cov neeg muaj txiaj ntsig thoob plaws kev qhuab qhia suav nrog kev taug qab, lub sijhawm sim, txoj kev thiab cyclocross siv cov log tsheb, qhov twg cov tread, casing thiab raj tau sewn rau hauv ib lub qauv. Txawm hais tias muaj qhov tsis txaus ntseeg ntawm qhov yuav tsum tau muab cov log tsheb no rau lub log rims (lawv tsis koom nrog cov hlaws dai raws li cov clinchers), cov neeg nyiam nyiam cov tubulars 's smoother caij, muaj pov thawj qis dua dov thiab kev lees paub tias txawm tias lub tiaj tus, lub log tsheb nyob ntawm ntug.
'Lub physics ntawm qhov zoo kawg nkaus puag ncig hla ntu zoo li maj mam khawm ib qho (feem ntau) latex inner tube yog qhov zoo rau qhov muag muag, supple system vim nws yuav deform zoo kawg nkaus nyob rau hauv txhua qhov kev taw qhia, 'hais tias Morgan Nicol, tus thawj coj ua haujlwm ntawm Challenge Tyres, lub tuam txhab tshwj xeeb hauv kev xuas tes ua tubulars. Ib lub log tsheb clincher yog tsim los nrog lub suab U-zoo thiab yuav tsis deform li uniformly.
Vim li cas qhov no tseem ceeb? Txhawm rau txo qis kev ua haujlwm ntawm lub log tsheb yuav tsum ua kom muaj zog txaus kom deform thiab nqus cov imperfections nyob rau hauv txoj kev nto, tso cai rau lub zog ntawm cov neeg caij tsheb thiab tsheb kauj vab mus txuas ntxiv tsis muaj kev cuam tshuam.
Lwm txoj, hais tias Nicol, yog tias txhua zaus lub log tsheb tsoo lub pob zeb lossis qhov chaw tsis sib xws nws rov qab los ntawm ib feem me me (uas tau tshwm sim ntau zaus ntawm lub log tig), tawm tsam rau pem hauv ntej. Yog hais tias koj scutinised txawm tias ib tug super- du txoj kev nto nyob rau hauv magnification, nws profile nyob deb ntawm lub tiaj tus. Ntawm qib microscopic, cov log tsheb muaj qee yam zoo ib yam li bouncing hla lub cobbles ntawm Paris-Roubaix txhua lub caij, poob lub zog vim lub log yog rov ua dua huab cua. Qhov no yog vim li cas yuag, siab zog log tsheb tau maj mam raug txiav tawm hauv kev pom zoo ntawm cov log tsheb dav dua, raws li nws tau raug pov thawj tias cov log tsheb dav dua, qis dua cov log tsheb tsawg dua vim lawv deform yooj yim dua thiab yog li rov qab tsawg dua.
Eric Gertner, Bontrager tus thawj coj log tsheb, hais tias, 'Txhua tus tau siv lub log tsheb 19 hli dav siv rau 120psi xav tias nws nrawm dua. Tab sis tam sim no peb paub tias tsis yog li ntawd. Los ntawm qhov peb tau pom hauv kev sim, lub log tsheb siab dua yuav thaws koj nyob ib puag ncig ntau dua thiab qhov bouncing ib puag ncig yog lub zog tiag tiag los ntawm lub ntiaj teb. Ntawm lub velodrome polished lub log 19 hli yuav yog qhov ceev tshaj plaws, tab sis ntawm txoj kev qhov zoo tshaj plaws yog qhov loj dua kom tshem tawm txoj kev nrov nrov, thiab qis qis, vim li cas, yog qhov zoo rau ntau tus neeg.'
Suppleness, zoo li, yog lub log tsheb loj tshaj plaws, thiab ntau dua li thaum lub kaum sab xis, tshwj xeeb tshaj yog nyob rau hauv ntub dej los yog ntawm qhov chaw ntxhib. Nicol hais tias, 'Raws li koj nkag mus rau hauv cov ces kaum uas txoj kev ntog tsis zoo tag nrho, ib qho kev thaws pob yuav ua rau lub log tsis hnyav.' Yog tias dej ntxiv rau qhov xwm txheej nws ua raws li cov roj nplua nyeem, thiab koj zoo li yuav swb mus rau. koj lub nraub qaum tshwj tsis yog qhov suppleness ntawm koj lub log tsheb tuaj yeem tuav kev sib cuag nrog txoj kev.
'Suppleness nyob ntawm ib feem ntawm lub thickness thiab yooj ntawm lub tread, tab sis tiag tiag nws yog lub casing uas plays lub luag hauj lwm tseem ceeb nyob rau hauv lub log kev ua tau zoo, ' Nicol hais. Lub casing no muaj cov khaubncaws sab nraud povtseg ntawm woven thiab bonded threads. Qhov ntau dua ntawm cov xov ib nti (TPI), lub thinner txhua txoj xov yog thiab qhov ntau supple lub log yuav yog. Cov log tsheb zoo sib tw tuaj yeem muaj txog 320TPI, thaum lub caij ntuj no cov log tsheb yuav muaj 60TPI xwb. Tab sis ceev faj thaum xaiv cov log tsheb, vim tias cov tuam txhab lag luam feem ntau yuav hais cov nqi TPI raws li ntau txheej txheej ntawm lub cev. Piv txwv li, 180TPI carcass yuav yog peb txheej ntawm 60TPI.
Cov ntaub ntawv tseem ceeb ntawm no ib yam nkaus, nrog rau saum-ntawm-tus-ntau cov kab lo lo ntxhuav (siv rau cov kab tubulars) ua softer thiab supple tshaj li paj rwb xov, uas nyob rau hauv lem outperform nylon. Tab sis raws li Continental's Blaurock tau taw qhia thaum pib, koj tsis tuaj yeem muaj tag nrho. Cov xov xov siab suav, paj rwb carcasses thiab softer durometer roj hmab treads tej zaum yuav yog qhov yooj yim tshaj plaws tab sis lawv tsis muaj lub zog thiab tsis kam rau kev txiav cov nylon nruj dua thiab cov roj hmab nyuaj dua.
Txawm li cas los xij, tsis muaj dab tsi tuaj yeem tiv thaiv cov kev cuam tshuam no thiab tsim kom muaj kev sib xyaw zoo meej ntawm suppleness thiab durability. Tab sis leej twg paub dab tsi yuav los ntawm txoj kev thaum lub graphene kiv puag ncig tuav?
