Ngaphezu kwezinkinga zokulungisa nokumiswa, sithole nemibuzo eminingi ekhathazayo mayelana ne-geometry yohlaka lwebhayisikili lasezintabeni. Umuntu uzibuza ukuthi isilinganiso ngasinye sibaluleke kangakanani, ukuthi zithinta kanjani izici zokugibela, nokuthi zixhumana kanjani nezinye izakhi ze-geometry yebhayisikili kanye nokwakheka kokumiswa. Sizobheka ngokucophelela ezinye zezilinganiso ze-geometry ezibaluleke kakhulu ukuze sihlukanise abagibeli abasha—siqale nge-bracket engezansi. Cishe akunakwenzeka ukumboza zonke izici zendlela ukulinganiswa kohlaka olulodwa okuthinta ngayo ukugibela ibhayisikili, ngakho-ke sizokwenza konke okusemandleni ethu ukufinyelela amaphuzu abalulekile athinta iningi lamabhayisikili.
Ukuphakama kwebhuleki elingezansi ukulinganisa okuqondile kusukela phansi kuya enkabeni ye-BB yebhayisikili lapho ukumiswa kunwetshiwe ngokugcwele. Esinye isilinganiso, i-BB drop, ukulinganisa okuqondile kusukela emgqeni ovundlile phakathi nendawo yehabhu yebhayisikili kuya emgqeni ohambisanayo enkabeni ye-BB. Lezi zilinganiso ezimbili zibalulekile ngezindlela ezahlukene lapho ubheka ibhayisikili futhi unquma ukuthi ligibela kanjani.
Ukwehla kwe-BB kuvame ukusetshenziswa abagibeli ukuze babone ukuthi bangazizwa kanjani “ngaphakathi” futhi “basebenzise” ibhayisikili. Ukwehla kwe-BB okwengeziwe kuvame ukuholela kumgibeli oqinile nozethembayo ozizwa sengathi uhleli ohlakeni kunokuba agibele kulo. I-BB ehlehla phakathi kwama-axle ngokuvamile izizwa ingcono kune-BB ende lapho ishayela emajika nasemhlabathini ongcolile. Lokhu kulinganisa kuvame ukuqina futhi akuthinteki ngosayizi ohlukene wethayi noma amasondo. Kodwa-ke, ama-flip chips avame ukushintsha enye yezinguquko zejiyometri. Amafreyimu amaningi ane-flip chip angaphakamisa noma ehlise i-BB yawo ngo-5-6mm, kuhlanganiswe namanye ama-engeli kanye nokulinganisa kwethonya le-chip. Kuye ngomzila wakho kanye nezintandokazi zakho, lokhu kungashintsha ibhayisikili ukuze isethingi eyodwa isebenze enkabeni ethile yomzila, kanti enye ifaneleka kangcono endaweni ehlukile.
Ukuphakama kwe-BB kusuka phansi kwehlathi kuyinto eguquguqukayo kakhulu, lapho i-flip chip ikhuphuka futhi yehla, ukushintsha kobubanzi bethayi, ukushintsha kobude be-axle kuya kumqhele, ingxube yesondo, nanoma yikuphi okunye ukunyakaza kweyodwa noma zombili lezi zinto. Cabanga ngobudlelwano be-axle yakho nothuli. Ukukhetha ukuphakama kwe-BB kuvame ukuba ngokomuntu siqu, kanti abanye abagibeli bakhetha ukuklwebha ama-pedal emadwaleni egameni lomuzwa wokugibela otshaliwe, kanti abanye bakhetha i-gearbox ephezulu, ephephile endleleni yengozi.
Izinto ezincane zingashintsha ukuphakama kwe-BB, zenze izinguquko ezibalulekile endleleni ibhayisikili eliphatha ngayo. Isibonelo, ifoloko le-Fox 38 elingu-170mm x 29in linesilinganiso somqhele esingu-583.7mm, kanti usayizi ofanayo ulinganisa ubude obungu-586mm. Zonke ezinye izifoloko emakethe zinobukhulu obuhlukene futhi zizonikeza ibhayisikili ukunambitheka okuhlukile kancane.
Nganoma yiliphi ibhayisikili elidonsela phansi, indawo yezinyawo nezandla zakho ibaluleke kakhulu ngoba yiyona kuphela indawo oxhumana ngayo lapho wehla. Uma uqhathanisa ukuphakama kwe-BB kanye nokuwa kwamafreyimu amabili ahlukene, kungasiza ukubona ukuphakama kwe-stack maqondana nalezi zinombolo. I-Stack isilinganiso esiqondile phakathi komugqa owodwa ovundlile nge-BB kanye nomunye umugqa ovundlile phakathi nendawo yokuvula kweshubhu ephezulu. Ngenkathi i-stack ingalungiswa kusetshenziswa ama-spacer ngaphezulu nangaphansi kwesiqu, kungumqondo omuhle ukubheka le nombolo ngaphambi kokuthenga uhlaka ukuqinisekisa ukuthi ungafinyelela ukuphakama kwe-handlebar oyifunayo, uma kuqhathaniswa ne-BB drop. I-Effective ifaneleka kakhulu ezidingweni zakho.
Izingalo ze-crank ezimfushane kanye nama-bash guards kudala isikhala esengeziwe kanye nokuphepha kwe-BB ephansi, kodwa udinga ukuqaphela izinzwane zakho lapho ugibela amatshe amade. Kubagibeli abanemilenze emifushane, ukwehla kwe-BB okwandisiwe kudinga nobude beshubhu lesihlalo esifushane ukuze kuhlangatshezwane nohambo olufunwayo lwe-dropper. Isibonelo, i-great I give enkulu njengamanje ine-35mm BB drop eyenza ibhayisikili lizizwe kahle ngesivinini esiphansi. Njengoba i-crank engu-165mm ifakiwe, angikwazanga ukufaka i-dropper post engu-170mm esigxotsheni sesihlalo eside esingu-445mm. Kukhona cishe u-4mm phakathi kwekhola yesihlalo kanye nephansi lekhola ye-dropper ngakho i-BB ephansi, okuholela kushubhu lesihlalo eside noma izingalo ze-crank ezinde kuzongiphoqa ukuthi nginciphise uhambo lwami lwe-dropper noma ngigibele uhlaka oluncane; akukho nokukodwa kwalokhu okuzwakala kukhanga. Ngakolunye uhlangothi, abagibeli abade bazothola ukufakwa kwesihlalo esiningi ngenxa ye-BB drop eyengeziwe kanye neshubhu lesihlalo esiningi, okunikeza iziqu zabo amandla okuthenga amaningi ngaphakathi kohlaka.
Usayizi wethayi uyindlela elula yokulungisa ukuphakama kwe-BB nokwenza izinguquko ezinhle ekhoneni leshubhu lekhanda lebhayisikili ngaphandle kokuhlinzwa okukhulu. Uma ibhayisikili lakho liza nesethi yamathayi angu-2.4 intshi bese ufaka amafoloko angemuva angu-2.35 intshi kanye nangaphambili angu-2.6 intshi, amaphedali angaphansi akungabazeki ukuthi azozizwa ehlukile. Qaphela ukuthi ishadi lakho lejiyometri yebhayisikili lilinganiswa ngethayi eliyisipele engqondweni, ngakho-ke ungazama ukuhlanganiswa okuhlukile ukuthuthukisa ulwazi lwakho lokugibela.
Lezi ezinye zezici eziningi ezithinta ukuphakama kwe-BB futhi zingathinta ukuphakama kwe-BB. Ukhona omunye umuntu ongabelana naye esingazuza kuye sonke? Sicela umbhale phansi kumazwana angezansi.
Ngingathanda ukunikeza umbono ohlukile. Kuthiwani uma abantu abaningi bekhetha ibhayisikili le-BB eliphansi, kodwa empeleni kungenxa yokuthi izibambo ziphansi kakhulu? Ngoba umehluko wokuphakama phakathi kwe-BB ne-handlebar ubaluleke kakhulu ekuphatheni, futhi ngombono wami amabhayisikili amaningi ane-head tube emfushane kakhulu (okungenani ngobukhulu obukhulu) futhi ngokuvamile ithengiswa ngaphansi kwesiqu lapho ibhayisikili lithengiswa Azikho izikhala eziningi kangaka.
Kuthiwani ngesigxobo? Ishubhu ende yesiteringi eshubhuni elifushane lekhanda ibangela ukugoba okukhulu. Ukushintsha ukuphakama kwesibambo kwandisa "isitaki" ngaphandle kokuthinta ukugoba eshubhuni lesiteringi.
Yebo, yebo nginesiqu esingu-35mm esinezikhala ezingu-35mm kanye nesiqu…kodwa isibuyekezo sami asimayelana nokuthi singaba kanjani nesiqu esinde. Lokhu kungenxa yokuthi izibambo zebhayisikili zingase zibe phansi kakhulu, abantu bathanda i-BB ephansi ngoba yandisa umehluko wokuphakama phakathi kwesiqu kanye ne-BB.
I-BB iyashintsha ngesikhathi sokusetha ukumiswa. Umgibeli usetha ukwehla, okungashintsha ukuphakama nokwehla kwe-BB. Ukuphakama kwe-BB kuyashintsha njengoba ukumiswa kujikeleza ngokucindezelwa nokubuyela emuva njengoba ukumiswa kuhamba, kodwa ngokuvamile kuhamba endaweni yokuphakama okubekiwe ngesikhathi sokusetha ukwehla. Ngicabanga ukuthi izilungiselelo zokwehla zinomthelela omkhulu (ukuphakama, ukwehla) kunamathayi noma ama-flip chips.
Uveza iphuzu eliqinile lokuthi ukugoba kunomthelela omkhulu kuzo zombili izilinganiso. Kufanele sisebenzise amaphuzu ahleliwe uma siqhathanisa amabhayisikili, futhi ukugoba kwawo wonke umuntu kuhlukile, yingakho ngisebenzisa izinombolo zangaphambi kokugoba. Kungaba kuhle uma zonke izinkampani nazo zabelana ngethebula lejiyometri elinokwehla okungu-20% no-30%, yize kungase kube nabanye abagibeli abangenayo ukugoba okulinganayo ngaphambili nangemuva.
Umehluko ubangelwa ukuphakama kwe-bb maqondana nomhlabathi kanye nobuso bokuxhumana kwesondo, hhayi indawo ephakathi kwesondo lapho lizungeza khona.
Noma yiliphi inani lenombolo ye-bb drop liyinganekwane egcinwe kahle elula ukuyiqonda kunoma ubani onolwazi ngamabhayisikili amancane anamasondo njenge-bmx, i-brompton noma i-moulton.
I-BB ephansi ayisho ishubhu lesihlalo elide. Akunangqondo nhlobo. Ikakhulukazi uma ukhuluma ngokulungisa ukuphakama kwe-BB usebenzisa amathayi namafoloko njll. Ishubhu lesihlalo linobude obungaguquki kufreyimu ethile, futhi akukho ukulungiswa okuzokwelula noma kunciphise lelo shubhu lesihlalo. Yebo, uma ufinyeza ifoloko kakhulu, ishubhu lesihlalo lizoqina futhi umgqomo ophezulu osebenzayo uzoncipha kancane, kungadingeka ukuthi ubuyisele isihlalo emuva emzileni, bese isihlalo sidinga ukwehliswa kancane, kodwa asishintshi ngempela ubude beshubhu lesihlalo.
Umqondo omuhle, ngiyabonga. Incazelo yami ingase icace kuleso sigaba. Engifuna ukukusho ukuthi uma unjiniyela wohlaka ewisa i-BB ngenkathi egcina ukuphakama kwengxenye ephezulu yeshubhu/ukuvula kwesihlalo kufana, ishubhu lesihlalo lizokhula libe lide, okungabangela izinkinga ngokulingana kwe-dropper post.
kulungile. Nakuba ngingaqiniseki ukuthi kungani kudingeka ukugcina indawo eqondile yengxenye ephezulu yeshubhu yesihlalo.
Amabhayisikili okulinga ikakhulukazi, ukusetshenziswa kwawo okujwayelekile kusukela ku-+25 kuya ku-+120mm BB.
Empeleni, eyami iyimoto yangokwezifiso ene-+25 ehloselwe ukuya ku-zero lapho umgibeli ekhona. Lokhu kwenzelwa ukwanelisa izidingo, ngoba akukho okubi kunokuchitha imali yakho oyisebenzele kanzima emshinini olenga amaphedali emhlabathini uma ususiwe epayipini.
Nge-hardtail elandelayo eyenziwe ngokwezifiso, ngiqedile ifayela le-CAD, kufaka phakathi ikhasi elithi “Shall”. Yileyo imigomo eku-BB.
Ngingathanda ukubona izilinganiso zangempela zokwehla ezivela kubagibeli bamabhayisikili abasag. I-rigid with yami iphakathi kuka--65 no--75 kuye ngokuthi ikuphi okungavamile. Ngigijima eyami iphansi futhi ibamba umugqa kangcono emakhoneni futhi ngizizwa ngitshalwe kakhulu otshanini obude.
Akulungile, kokubili kuyiqiniso. Ukwehla kwe-BB kulinganiswa uma kuqhathaniswa nokuyeka, usayizi wesondo awushintshi lokhu, yize ubude befoloko buyishintsha. Ukuphakama kwe-BB kulinganiswa kusukela phansi futhi kuzophakama noma kwehle njengoba usayizi wethayi ushintsha. Yingakho amabhayisikili amakhulu anamasondo evame ukuba nokwehla kwe-BB okuningi, ngakho-ke ukuphakama kwawo kwe-BB kufana namabhayisikili amancane anamasondo.
Faka i-imeyili yakho ukuze uthole izindaba eziphezulu zokugibela ibhayisikili ezintabeni, kanye nokukhethwa kwemikhiqizo kanye namadili alethwa ebhokisini lakho lokungenayo njalo ngeviki.