Vatasvi vatsva vakawanda vachangotenga abhasikoro remugomohandizive musiyano pakati pe21-speed, 24-speed, uye 27-speed.Kana kungoziva kuti 21-kumhanya i3X7, 24-kumhanya i3X8, uye 27-kumhanya i3X9.Uyewo mumwe munhu akabvunza kana 24-speed gomo bhasikoro rinokurumidza kupfuura 27-speed imwe.Kutaura zvazviri, chiyero chekumhanya chinongopa vatasvi mikana yakawanda yekusarudza.Kumhanya kunoenderana nemutasvi wegumbo simba, kutsungirira uye unyanzvi.Chero bedzi iwe une simba guru, 21-speed imwe haisi inononoka kudarika 24-speed bhasikoro!Makiromita mangani anogona kuchovha bhasikoro remugomo?
Muchiono, panguva imwe chete yepedaling cadence, 27-speed bhasikoro inomhanya kupfuura 24-speed imwe.Asi muchokwadi, neyakakura giya reshiyo, iyo pedaling ichave inorema kwazvo, uye cadence inozodzikira.Kana iyo cadence ikadzikira, kumhanya kunozodzikira.Dzimwe nguva vamwe vanotanga vanotenga mabhasikoro emumakomo voti, “Bhasikoro rangu rakanaka, sei rakaoma kudaro kuchovha?” Chikonzero ndechekuti haana kusarudza reshiyo yegiya inoenderana neake kana akachovha.

Kutanga ngatitarisei musiyano uripo pakati pe21-speed, 24-speed uye 27-speed:

21-speed chainwheel & crank 48-38-28 flywheel 14 ~ 28

24-speed chainwheel & crank 42-32-22 flywheel 11~ 30 (11~ 32)

27-speed chainwheel & crank 44-32-22 flywheel 11~ 30 (11~ 32)

Chiyero chegiya ndiyo nhamba yemagiya akakamurwa nehuwandu hwemavhiri

21-kumhanya kwepamusoro giya reshiyo 3.43, shoma giya reshiyo 1

24-kumhanya kwepamusoro giya reshiyo 3.82, shoma giya reshiyo 0.73 (0.69)

27-kumhanya kwepamusoro giya reshiyo 4, shoma giya reshiyo 0.73 (0.69)

Kubva pane izvi tinogona kuona musiyano pakati pavo.Iyo 27-speed uye 24-speed ine hombe kana diki giya reshiyo pane 21-speed, izvo zvinogona kuita kuti iwe ukwire nekukurumidza uye kuita kuti iwe utasve kushanda kushoma.Nekuda kwekuti 24-speed chainwheel haina kufanana neiyo 21-speed one, diki vhiri reketani rinogona kuwana reshiyo yegiya yakareruka, inova mukana mukuru pakukwira.Bhasikoro re24-speed rinogona kuwana reshiyo yekutapurirana ye1.07 kunyangwe ikashandisa 2X1 yekumhanya reshiyo.Kana iyo flywheel iri 11 ~ 32, inokwanisa kuwana chiyero chekutapurirana che1 (iyo shoma yekutapurirana reshiyo ye21-speed i1).Saka zvakanakira pamusoro pe21-speed bhasikoro ye24-speed imwe haisi mugiya rinokurumidza, asi zvakanyanya mugiya rinononoka, izvo zvinoita kuti zvive nyore uye zvine simba kuti iwe ukwire mumigwagwa yemakomo.Mutasvi mutsva anongofunga kuti bhasikoro 24-speed inokurumidza kupfuura 21-speed bhasikoro.Pamwe vanhu vashoma vanopatsanura nhamba yemazino ega ega crank nekaseti kuti vaone kuti mutsauko ndeupi.

Kana iri 27-speed gomo bhasikoro, flywheel yaro inowanzofanana neiyo 24-speed one.Musiyano ndewekuti iyo yakakura pamberi crank inogadziriswa kubva pa42 kusvika ku44, iyo inokodzera vanhu vane simba rakanaka remuviri.A 24-speed gomo bhasikoro kana 27-speed gomo bhasikoro ndiyo mutsauko pakati pezvikamu zvakasiyana-siyana zvebhasikoro zvakagadziridzwa kuva mienzaniso iri nani negiredhi rayo.