Ukongeza kwimiba yokugcinwa kunye nokumiswa, sikwafumene nemibuzo emininzi ebuhlungu malunga nejiyometri yesakhelo sebhayisekile yasezintabeni. Umntu uyazibuza ukuba ibaluleke kangakanani indlela yokulinganisa nganye, indlela ezichaphazela ngayo iimpawu zokukhwela, kunye nendlela ezisebenzisana ngayo nezinye izinto zejiyometri yebhayisekile kunye noyilo lokumiswa. Siza kujonga kancinci ezinye zezona milinganiselo zibalulekileyo zejiyometri ukuze sicacise abakhweli abatsha—siqale ngesibiyeli esisezantsi. Akunakwenzeka ukugubungela yonke into malunga nendlela ukulinganisa isakhelo esinye okuchaphazela ngayo indlela yokukhwela ibhayisekile, ngoko ke siza kwenza konke okusemandleni ethu ukufikelela kwiindawo eziphambili ezichaphazela uninzi lweebhayisekile.
Ukuphakama kwesibiyeli esisezantsi kukulinganisa ngokuthe nkqo ukusuka emhlabeni ukuya embindini we-BB yebhayisekile xa ukumiswa kwayo kunwetshiwe ngokupheleleyo.Olunye umlinganiselo, i-BB drop, kukulinganisa ngokuthe nkqo ukusuka kumgca othe tye phakathi embindini wehabhu yebhayisekile ukuya kumgca ohambelanayo embindini we-BB. Ezi zilinganiso zimbini zixabiseke ngeendlela ezahlukeneyo xa ujonga ibhayisekile kwaye ugqiba indlela eqhuba ngayo.
Ukwehla kwe-BB kudla ngokuba yinto abakhweli abayisebenzisayo ukubona indlela abanokuthi bazive ngayo "ngaphakathi" kwaye "bayisebenzise" ibhayisekile. Ukwehla kwe-BB eyongezelelweyo kudla ngokubangela umkhweli ozinzileyo nozithembileyo oziva ngathi uhleli kwifreyimu endaweni yokuyikhwela. I-BB ehlehlayo phakathi kwee-axles ngokuqhelekileyo ivakala ingcono kune-BB ende xa uqhuba ujika kwiindawo ezinothuli olungcolileyo. Olu linganiselo luhlala luzinzile kwaye aluchaphazeleki bubungakanani obahlukeneyo bamathayara okanye amavili. Nangona kunjalo, ii-flip chips zihlala zitshintsha olunye utshintsho lwejometri. Iifreyimu ezininzi ezine-flip chip zinokuphakamisa okanye zehlise i-BB yazo nge-5-6mm, zidityaniswe nezinye ii-engile kunye nomlinganiselo wempembelelo ye-chip. Kuxhomekeke kwindlela yakho kunye nezinto ozithandayo, oku kunokutshintsha ibhayisekile ukuze enye isetingi isebenze kwiziko elithile lendlela, ngelixa enye ifanelekile ngakumbi kwindawo eyahlukileyo.
Ukuphakama kwe-BB ukusuka kumgangatho wehlathi kuyahlukahluka, kunye ne-flip chip ehamba phezulu nasezantsi, utshintsho lobubanzi betayara, utshintsho lobude be-axle ukuya kwi-crown, umxube wevili, kunye naluphi na olunye ushukumo lwenye okanye zombini ezi zinto. Jonga ulwalamano lwe-axle yakho nothuli. Ukukhetha ukuphakama kwe-BB kudla ngokuba yinto yobuqu, abanye abakhweli bekhetha ukukrwela iipedali ematyeni egameni lendlela yokukhwela etyaliweyo, ngelixa abanye bekhetha i-transmission ephezulu, ngokukhuselekileyo ngaphandle kwengozi.
Izinto ezincinci zinokutshintsha ubude be-BB, zenze utshintsho olubalulekileyo kwindlela ephatha ngayo ibhayisekile. Umzekelo, ifolokhwe ye-Fox 38 eyi-170mm x 29in inomlinganiselo we-crown we-583.7mm, ngelixa ubukhulu obufanayo buyi-586mm ubude. Zonke ezinye iifolokhwe ezithengiswayo zinobukhulu obahlukeneyo kwaye ziya kunika ibhayisekile incasa eyahlukileyo kancinci.
Ngayo nayiphi na ibhayisekile yomxhuzulane, indawo yeenyawo nezandla zakho ibaluleke kakhulu kuba zezona ndawo zodwa onokudibana kuzo xa uhla. Xa uthelekisa ukuphakama kwe-BB kunye nokuwa kweefreyimu ezimbini ezahlukeneyo, kunokuba luncedo ukubona ukuphakama kwe-stack ngokunxulumene nala manani. I-Stack yindlela yokulinganisa ngokuthe nkqo phakathi komgca omnye othe tye nge-BB kunye nomnye umgca othe tye phakathi komnyango wetyhubhu ephezulu. Nangona i-stack inokulungiswa kusetyenziswa i-spacers ngaphezulu nangaphantsi kwesiqu, ngumbono olungileyo ukujonga eli nani ngaphambi kokuthenga ifreyimu ukuqinisekisa ukuba unokufikelela kubude obufunekayo be-handlebar, xa kuthelekiswa ne-BB drop. I-Effective ifanelekile kakhulu kwiimfuno zakho.
Iingalo ze-crank ezimfutshane kunye nee-bash guards zenza indawo engakumbi kunye nokhuseleko kwi-BB esezantsi, kodwa kufuneka uqaphele iinzwane zakho xa ukhwela amatye amade. Kubakhweli abanemilenze emifutshane, i-BB drop eyandisiweyo ikwafuna ubude betyhubhu yesihlalo esifutshane ukuze ilungele uhambo olufunwayo lwe-dropper. Umzekelo, i-I give enkulu ngoku ine-35mm BB drop eyenza ibhayisekile izive intle ngesantya esicothayo. Ngokufakelwa kwe-crank ye-165mm, bendingakwazi ukufaka i-170mm dropper post kwi-445mm yesakhelo sesihlalo eside. Kukho malunga ne-4mm phakathi kwekhola yesithuba kunye nezantsi kwekhola ye-dropper ngoko i-BB esezantsi, ebangela ityhubhu yesihlalo ende okanye iingalo ze-crank ezinde iya kundinyanzela ukuba ndinciphise uhambo lwam lwe-dropper okanye ndikhwele ifreyimu encinci; akukho nanye kwezo ivakala inomtsalane. Kwelinye icala, abakhweli abade baya kufumana ukufakwa kwesithuba esingaphezulu ngenxa ye-BB drop eyongezelelweyo kunye netyhubhu yesihlalo engaphezulu, enika iziqu zabo amandla okuthenga ngakumbi ngaphakathi kwesakhelo.
Ubungakanani bamathayi yindlela elula yokulungisa ubude be-BB kunye nokwenza uhlengahlengiso oluhle kwi-engile yetyhubhu yentloko yebhayisekile ngaphandle kotyando olukhulu. Ukuba ibhayisekile yakho iza neseti yamatayara angama-2.4 intshi kwaye ufake iifolokhwe zangaphambili ezingama-2.35 intshi kunye nezingama-2.6 intshi, iipedali ezingaphantsi ngokuqinisekileyo ziya kuvakala zahlukile. Qaphela ukuba itshathi yejiyometri yebhayisekile yakho ilinganiswa ngetayara eseleyo engqondweni, ukuze uzame ukudibana okwahlukeneyo ukuphucula amava akho okukhwela.
Ezi zezinye zezinto ezininzi ezichaphazela ubude be-BB kwaye zinokuchaphazela ubude be-BB. Ngaba unaye omnye umntu onokusabelana naye esinokuzuza kuye sonke? Nceda ubhale phantsi kwizimvo ezingezantsi.
Ndingathanda ukubonelela ngembono eyahlukileyo. Kuthekani ukuba abantu abaninzi bakhetha ibhayisekile ye-BB ephantsi, kodwa eneneni kungenxa yokuba ii-handlebars ziphantsi kakhulu? Kuba umahluko wokuphakama phakathi kwe-BB kunye ne-handlebars ubaluleke kakhulu ekuphatheni, kwaye ngokoluvo lwam uninzi lweebhayisekile zinetyhubhu yentloko emfutshane kakhulu (ubuncinane ngobukhulu obukhulu) kwaye idla ngokuthengiswa phantsi kwesiqu xa ibhayisekile ithengiswa Akukho zi-spacers zininzi kangako.
Kuthekani ngepali? Ityhubhu ende ye-steerer kwityhubhu emfutshane yentloko ibangela ukugoba okungakumbi. Ukutshintsha ubude be-handlebar kwandisa "i-stack" ngaphandle kokuchaphazela ukugoba kwityhubhu ye-steerer.
Ewe, ewe ndinesiqu se-35mm esinee-spacers ze-35mm kunye nesiqu...kodwa uphononongo lwam alukho malunga nendlela yokuba nesiqu esinde. Oku kungenxa yokuba ii-handlebars zebhayisekile zinokuba ziphantsi kakhulu, abantu bayayithanda i-BB ephantsi kuba yonyusa umahluko wobude phakathi kwesiqu kunye ne-BB.
I-BB iyatshintsha ngexesha lokuseta i-suspension. Umkhweli useta i-sag, enokutshintsha ukuphakama kunye nokuwa kwe-BB. Ukuphakama kwe-BB kuyatshintsha njengoko i-suspension ijikeleza ngokucinezela kunye nokubuya kwakhona njengoko i-suspension ihamba, kodwa ihlala ihamba kubude obumiselweyo ngexesha lokuseta i-sag. Ndicinga ukuba useto lwe-sag lunempembelelo enkulu (ukuphakama, ukuhla) kunamathayara okanye ii-flip chips.
Ubeka ingongoma eqinileyo yokuba ukugoba kunempembelelo enkulu kuzo zombini izilinganiso. Kufuneka sisebenzise amanqaku asisigxina xa sithelekisa iibhayisekile, kwaye ukugoba komntu wonke kwahlukile, yiyo loo nto ndisebenzisa amanani angaphambi kokugoba. Bekuya kuba kuhle ukuba zonke iinkampani nazo zabelana ngetafile yejometri ene-20% kunye ne-30% yokugoba, nangona kusenokubakho abanye abakhweli abangenayo i-balanced front and back sag.
Umahluko ubangelwa bubude be-bb ngokumalunga nomhlaba kunye nomphezulu woqhagamshelwano lwevili, kungekhona embindini wokujikeleza kwevili.
Naliphi na ixabiso le-bb drop number yintsomi egcinwe kakuhle eqondakala lula kuye nabani na onamava ngeebhayisekile ezinamavili amancinci afana ne-bmx, i-brompton okanye i-moulton.
I-BB esezantsi ayithethi ityhubhu yesihlalo ende. Ayinangqondo konke konke. Ingakumbi ukuba uthetha ngokulungisa ubude be-BB usebenzisa amatayara kunye neefolokhwe njl. Ityhubhu yesihlalo inobude obumiselweyo kwisakhelo esithile, kwaye akukho luhlengahlengiso luya kuyolula okanye lunciphise loo tyhubhu yesihlalo. Ewe, ukuba uyifinyeza kakhulu ifolokhwe, ityhubhu yesihlalo iya kuqina kwaye umgqomo ophezulu osebenzayo uya kuncipha kancinci, kusenokufuneka ubuyisele isihlalo kwakhona kumzila, kwaye emva koko isihlalo kufuneka sehliswe kancinci, kodwa asitshintshi ubude betyhubhu yesihlalo.
Ingcinga entle, enkosi. Ingcaciso yam isenokuba icacile kweli candelo. Endifuna ukukubonisa kukuba ukuba injineli yefreyimu iwisa i-BB ngelixa igcina ukuphakama komphezulu wetyhubhu yesihlalo/ukuvula okufanayo, ityhubhu yesihlalo iya kuba nde, nto leyo enokubangela iingxaki ngokulingana kwesithuba sedropper.
kulungile. Nangona ndingaqinisekanga ukuba kutheni kuyimfuneko ukugcina indawo echanekileyo yomphezulu wetyhubhu yesihlalo.
Iibhayisekile zovavanyo ngokukodwa, ukusetyenziswa kwazo okuqhelekileyo kususela kwi +25 ukuya kwi +120mm BB.
Inene, eyam yeyakho, kwaye i-+25 yenzelwe ukuba ifikelele ku-zero, umkhweli ekhona. Oku kwenzelwa ukwanelisa iimfuno, kuba akukho nto imbi njengokuchitha imali yakho oyisebenzele nzima kwi-suspension efaka iipedali emhlabeni ukuba isusiwe kwi-piste.
Kwi-hardtail elandelayo eyenziwe ngokwezifiso, ndiyigqibile ifayile ye-CAD, kuquka nephepha elithi “Shall”. Yiyo loo migaqo kwi-BB.
Ndingathanda ukubona imilinganiselo yokwenyani yokuhla evela kubakhweli beebhayisekile abakwi-sag. I-rigid with yam iphakathi kwe--65 kunye ne--75 kuxhomekeke kwindawo engaqhelekanga. Ndiyayihla eyam isezantsi kwaye ibamba umgca ngcono kwiikona kwaye ndiziva ndityalwe ngakumbi engceni ende.
Ayilunganga, zombini ziyinyani. Ukwehla kwe-BB kulinganiswa xa kuthelekiswa nokuyeka, ubungakanani bevili abutshintshi oku, nangona ubude befoloko butshintsha. Ukuphakama kwe-BB kulinganiswa ukusuka emhlabeni kwaye kuya kunyuka okanye kuwe njengoko ubungakanani betayara butshintsha. Yiyo loo nto iibhayisekile ezinkulu ezinamavili zihlala zine-BB drop eninzi, ngoko ke ukuphakama kwazo kwe-BB kufana neebhayisekile ezincinci ezinamavili.
Faka i-imeyile yakho ukuze ufumane iindaba eziphambili zokukhwela ibhayisekile ezintabeni, kunye nokukhetha iimveliso kunye nezivumelwano ezithunyelwa kwibhokisi yakho yokungenayo qho ngeveki.