Kodi tcheni cha 7-liwiro chingalowe m'malo mwa unyolo wa 9-liwiro?

Zodziwika bwino zimaphatikizapo kapangidwe kachidutswa chimodzi, 5-chidutswa kapena 6-chidutswa (magalimoto otumizira oyambilira), mawonekedwe a 7, 8-piece, 9-piece, 10-piece, 11-piece ndi 12-piece. dongosolo (magalimoto apamsewu).

Kuthamanga kwa 8, 9, ndi 10 kumayimira kuchuluka kwa magiya pa gudumu lakumbuyo.Liwiro likakwera, unyolowo umachepa.Chifukwa ma pedals onse a njinga zamapiri ali ndi maunyolo atatu, ngati flywheel yanu yakumbuyo ili ndi eyiti, ndiye kuti chiwerengero cha ma chainrings ndi 3 × chiwerengero cha ma flywheels akumbuyo ndi 8, omwe akufanana ndi 24, kutanthauza kuti ndi 24-liwiro.Ngati ntchentche yakumbuyo ili ndi zidutswa 10, mofananamo, galimoto yanu idzakhala 3 × 10 = 30, kutanthauza kuti ndi 30 liwiro.

Maulendo apanjinga akumapiri amaphatikizapo 8-to-24-speed, 9-to-27-speed, ndi 10-to-30-speed flywheels.M'malo mwake, okwera sadzagwiritsa ntchito zida zonse.Amangogwiritsa ntchito giya imodzi 80% ya nthawiyo.Zidazi ziyenera kukhala zoyenera kwambiri pakuthamanga kwa wokwera komanso pafupipafupi.

Zitha kuwoneka kuti magiya ambiri akakhala ndi magiya, m'pamenenso dalaivala amatha kusankha zida zomwe zimamuyenerera.27-liwiro ili ndi 3 magiya ambiri kuposa 24-liwiro, kupereka dalaivala kusankha zambiri.Ndipo magiya akachuluka, m'pamenenso amasinthasintha.