Usibye kubungabunga no guhagarika ibibazo, twakiriye kandi toni yibibazo byo guterura umutwe kubijyanye na gare ya gare yo mumisozi. Umuntu yakwibaza akamaro ko gupima ari ngombwa, uburyo bigira ingaruka kubiranga kugenda, nuburyo bikorana nibindi bintu bya geometrie no guhagarika imiterere kora uko dushoboye kugirango tugere ku ngingo zingenzi zigira ku magare menshi.
Uburebure buke munsi ni igipimo gihagaritse kuva hasi kugera hagati ya gare ya BB mugihe ihagarikwa ryagutse byuzuye.Ikindi gipimo, igitonyanga cya BB, ni igipimo gihagaritse kuva kumurongo utambitse unyuze hagati yikibuga cyamagare kugeza kumurongo ugereranije kuri hagati ya BB.Ibipimo bibiri bifite agaciro muburyo butandukanye iyo ureba igare no kumenya uko bigenda.
Ibimanuka bya BB akenshi nibyo abayitwara bakoresha kugirango babone uko bashobora kumva "muri" no "gukoresha" igare. Igabanuka rya BB ryiyongera mubisanzwe ritera umuntu ufite ishingiro kandi wizeye wumva ko yicaye kumurongo aho kuyigenderaho. BB igabanuka hagati yimitambiko muri rusange yumva imeze neza kurenza uburebure bwa BB mugihe utwaye unyuze mumyanda hamwe numwanda wuzuye.Ibipimo mubisanzwe bikosorwa kandi ntibiterwa nubunini butandukanye bwipine cyangwa ibiziga.Nyamara, chip flip mubisanzwe ihindura imwe mumahinduka ya geometrie. Benshi amakadiri hamwe na flip chip irashobora kuzamura cyangwa kumanura BB kuri 5-6mm, igahuzwa nizindi mpande hamwe no gupima ingaruka za chip. Ukurikije inzira yawe nibyo ukunda, ibi birashobora guhindura igare kuburyo igenamiterere rimwe rikorera kumurongo runaka wumuhanda, mugihe ikindi kibereye ahantu hatandukanye.
Uburebure bwa BB kuva hasi yishyamba ni byinshi bitandukanye, hamwe na flip chip izamuka hejuru no hepfo, ubugari bwipine ihinduka, uburebure bwikigero-cyambarwa, kuvanga uruziga, nibindi byose bigenda kuri kimwe cyangwa byombi .Ibintu mumibanire yawe ya axe numwanda.Uburebure bwaBB burigihe burimuntu, hamwe nabagenzi bamwe bahitamo gusiba pedal kurutare mwizina ryigiterwa cyatewe, mugihe abandi bahitamo kwanduza cyane, mumutekano mubi.
Utuntu duto dushobora guhindura uburebure bwa BB, ugahindura impinduka zifatika muburyo igare ryitwara.Urugero, 170mm x 29in Fox 38 ikibanza gifite ikamba rya 583.7mm, mugihe ubunini bumwe bupima 586mm z'uburebure.Ibindi byuma byose ku isoko ni ubunini butandukanye kandi bizaha igare uburyohe butandukanye.
Hamwe na gare iyo ari yo yose, umwanya wibirenge byawe n'amaboko ni ngombwa cyane cyane kuko aribwo buryo bwonyine bwo guhura mugihe umanuka.Iyo ugereranije uburebure bwa BB nigitonyanga cyibice bibiri bitandukanye, birashobora gufasha kubona uburebure bwa stack bijyanye iyi mibare. Igipimo nigipimo gihagaritse hagati yumurongo umwe utambitse unyuze kuri BB nundi murongo utambitse unyuze hagati yumutwe wo hejuru ufungura.Mu gihe igipande gishobora guhinduka ukoresheje icyogajuru hejuru no munsi yuruti, nibyiza kubireba uyu mubare mbere yo kugura ikadiri kugirango umenye neza ko ushobora kugera ku burebure bwifuzwa, ugereranije na BB drop Effective irakwiriye cyane kubyo ukeneye.
Amaboko magufi hamwe nabashinzwe kurinda bash gushiraho umwanya muto wumutekano hamwe numutekano kuri BB yo hepfo, ariko ugomba kureba amano yawe mugihe utera amabuye maremare.Ku bagenda bafite amaguru magufi, kwiyongera kwa BB nabyo bisaba uburebure bwintebe ngufi kugirango ubashe kwakira icyifuzo cyo gutembera cyifuzwa.Urugero, runini ndimo kugenderaho rufite 35mm ya BB ituma igare ryumva rikomeye kumuvuduko gahoro. Hamwe na crank ya 165mm yashizwemo, sinashoboraga kubona poste ya 170mm mumwanya wa 445mm z'uburebure.Hariho nka 4mm hagati yumukandara wicyicaro no hepfo yumukingo wigitonyanga kuburyo BB yo hepfo, bikavamo umuyoboro muremure cyangwa amaboko maremare yintoki bizampatira kugabanya ingendo zanjye cyangwa kugendera kuri Frame ntoya;nta na hamwe muri ayo majwi ashimishije. Ku rundi ruhande, abayigana barebare bazabona ibyicaro byinshi bitewe no kugabanuka kwa BB hamwe na trube nyinshi, bigatuma ibiti byabo bigura imbaraga murwego rwo hejuru.
Ingano yipine nuburyo bworoshye bwo guhindura uburebure bwa BB no guhindura neza igare ryumutwe wa gare nta kubagwa gukomeye.Niba igare ryawe rizanye amapine ya santimetero 2,4 hanyuma ugashyiraho inyuma ya santimetero 2,35 na imbere ya 2.6 amahwa, pedals munsi ntagushidikanya ko izumva itandukanye. Menya ko igare ryawe rya geometrike ryapimwe hamwe nipine yimodoka, bityo urashobora kugerageza guhuza kugirango utezimbere uburambe bwawe.
Ibi ni bimwe mubintu byinshi bigira ingaruka ku burebure bwa BB kandi bishobora kugira ingaruka ku burebure bwa BB.Ufite undi muntu wo gusangira twese dushobora kubyungukiramo? Nyamuneka ubyandike mubitekerezo bikurikira.
Ndashaka gutanga ibitekerezo bitandukanye. Byagenda bite se niba abantu benshi bakunda igare rito rya BB, ariko mubyukuri biterwa nigitereko kiri hasi cyane? Kuberako itandukaniro ryuburebure hagati ya BB nigitereko ningirakamaro mubyukuri, kandi mubitekerezo byanjye amapikipiki menshi afite igituba cyumutwe kigufi cyane (byibuze kubunini bunini) kandi mubisanzwe bigurishwa munsi yuruti iyo igare rigurishijwe Ntabwo ari imyanya myinshi.
Tuvuge iki kuri pole? Umuyoboro muremure mu muyoboro mugufi utera flex. Guhindura uburebure bwikiganza byongera “stack” bitagize ingaruka ku kugoreka mu muyoboro.
Nibyiza, yego mfite uruti rwa 35mm rufite icyogajuru cya 35mm hamwe nigiti… ariko isubiramo ryanjye ntabwo rireba uburyo wagira uburebure burebure.Ibi ni ukubera ko imikufi ya gare ishobora kuba mike cyane, abantu bakunda BB yo hasi kuko byongera itandukaniro ry'uburebure hagati yigitereko na BB.
BB ihinduka mugihe cyo guhagarika. Uwayigenderaho ashyiraho sag, ishobora guhindura uburebure bwa BB no kugabanuka.Uburebure bwa BB burahinduka nkigihe cyo guhagarikwa binyuze muri compression no kugaruka nkuko guhagarikwa bigenda, ariko mubisanzwe bigenda hejuru yuburebure bwashizweho mugihe cyo gushiraho.I tekereza igenamiterere rya sag rifite ingaruka nini (uburebure, igitonyanga) kuruta amapine cyangwa flip chip.
Ukora ingingo ihamye ko sag igira ingaruka zikomeye kubipimo byombi.Tugomba gukoresha ingingo zihamye mugihe ugereranije amagare, kandi sag ya buriwese iratandukanye, niyo mpamvu nkoresha imibare yabanjirije sag.Byaba byiza niba ibigo byose nabyo bisangiye. ameza ya geometrie hamwe na 20% na 30% sag, nubwo hashobora kuba hari abatwara ibinyabiziga bidafite uburinganire bwimbere ninyuma.
Itandukaniro riterwa nuburebure bwa bb ugereranije nubutaka hamwe nu ruziga ruhuza, ntabwo ari uruziga rwagati.
Agaciro ako ari ko kose ka bb yatonyanga numugani wabitswe neza byoroshye kubyumva kubantu bose bafite uburambe hamwe nigare rito nka bmx, brompton cyangwa moulton.
BB yo hepfo ntabwo isobanura umuyoboro muremure.Ntabwo byumvikana na gato. Cyane cyane niba uvuga guhindura uburebure bwa BB ukoresheje amapine nudukoni nibindi .Icyicaro cyicaro ni uburebure butajegajega kumurongo watanzwe, kandi ntagihinduka kizarambura cyangwa kigabanye iyo ntebe yintebe.Yego, niba ugabanije ikibanza kinini, icyicaro cyicaro kizagabanuka kandi ingunguru yo hejuru izagabanuka gato, birashobora kuba ngombwa gusubiza inyuma indogobe kumurongo, hanyuma indogobe ikeneye kumanurwa gato, ariko ntigihindura rwose uburebure bwintebe.
Igitekerezo cyiza, urakoze .Ibisobanuro byanjye birashobora gusobanuka muri kiriya gice. Icyo nshaka kuvuga ni uko niba injeniyeri ya kadamu yataye BB mugihe agumije uburebure bwo hejuru yintebe yintebe / gufungura kimwe, igituba cyicara kizaba kirekire , irashobora gutera ibibazo hamwe nigitonyanga gikwiye.
birakwiye bihagije.Nubwo ntazi neza impamvu ari ngombwa kugumya guhagarara neza hejuru yicyicaro.
Amagare yikigereranyo byumwihariko, imikoreshereze yabyo iri hagati ya +25 na + 120mm BB.
Mvugishije ukuri, ibyanjye nibisanzwe bifite +25 bigamije kujya kuri zeru hamwe nuwayigenderaho.Ibi bikorwa kugirango uhaze ibisabwa, kuko ntakintu kibi nko gukoresha amafaranga winjije cyane muguhagarika gushyingura pedal kwisi niba ikuwe kuri piste.
Kubikurikira bikurikira, ndangije dosiye ya CAD, harimo page ya "Shall". Ayo ni amagambo kuri BB.
Ndashaka kubona ibipimo nyabyo bituruka kubatwara amagare kuri sag.Icyuma cyanjye hamwe kiri hagati ya -65 na -75 bitewe numwanya wa eccentric.Nkoresha ikirombe cyanjye hepfo kandi gifata umurongo neza mumfuruka kandi ndumva byinshi guterwa mu byatsi birebire.
Ntibikwiye, byombi nukuri. Igitonyanga cya BB gipimwa ugereranije no guta ishuri, ubunini bwuruziga ntibuhindura ibi, nubwo uburebure bwikigero bubikora.Uburebure bwa BB bupimirwa hasi kandi buzazamuka cyangwa bugabanuke uko ubunini bwipine buhinduka.Niyo mpamvu amagare manini afite ibiziga binini akenshi bifite BB nyinshi, bityo uburebure bwabo bwa BB busa na gare ntoya.
Injira imeri yawe kugirango ubone amakuru yo mumagare yo hejuru kumusozi, wongeyeho gutoranya ibicuruzwa no kugurisha kuri inbox yawe buri cyumweru.