He nui nā mea holo lio hou i kūʻai wale aku nei i kahipaikikala maunaʻAʻole maopopo iaʻu ka ʻokoʻa ma waena o 21-wikiwiki, 24-wikiwiki, a me 27-wikiwiki. A i ʻole e ʻike wale ʻo 21-wikiwiki he 3X7, 24-wikiwiki he 3X8, a ʻo 27-wikiwiki he 3X9. Ua nīnau pū kekahi inā ʻoi aku ka wikiwiki o kahi paikikala mauna 24-wikiwiki ma mua o ka 27-wikiwiki. ʻO ka ʻoiaʻiʻo, hāʻawi wale ka lakio wikiwiki i nā mea holo i nā manawa hou aʻe e koho ai. Aia ka wikiwiki i ka ikaika o ka wāwae o ka mea holo, ke ahonui a me nā mākau. Inā loaʻa iā ʻoe ka ikaika nui, ʻaʻole lohi ka 21-wikiwiki ma mua o ka paikikala 24-wikiwiki! Ehia mau mile e hiki ai i kahi paikikala mauna ke holo?
Ma ke kumumanaʻo, ma ka cadence pedaling like, e holo wikiwiki ka paikikala 27-wikiwiki ma mua o ka 24-wikiwiki. Akā ʻo ka ʻoiaʻiʻo, me ka lakio kia kiʻekiʻe, e kaumaha loa ka pedaling, a e emi maoli ka cadence. Inā emi ka cadence, e emi maoli ka wikiwiki. I kekahi manawa kūʻai kekahi poʻe hoʻomaka i nā paikikala mauna a ʻōlelo, "Maikaʻi kaʻu paikikala, no ke aha he paʻakikī ke pedal?" ʻO ke kumu, ʻaʻole ʻo ia i koho i kahi lakio kia e kūpono iā ia i ka wā e holo ana.

ʻO ka mea mua, e nānā kākou i ka ʻokoʻa ma waena o 21-wikiwiki, 24-wikiwiki a me 27-wikiwiki:

21-wikiwiki kaulahao & crank 48-38-28 flywheel 14~ 28

Kaula uila 24-wikiwiki & crank 42-32-22 flywheel 11~ 30(11~ 32)

Kaula uila 27-wikiwiki & crank 44-32-22 flywheel 11~ 30(11~ 32)

ʻO ka lakio gear ka helu o nā gears i puʻunaue ʻia e ka helu o nā flywheels

ʻO ka lakio kia kiʻekiʻe loa he 21-wikiwiki 3.43, ka lakio kia liʻiliʻi loa he 1

ʻO ka lakio kia kiʻekiʻe loa o 24-wikiwiki 3.82, ka lakio kia liʻiliʻi loa 0.73 (0.69)

ʻO ka lakio kia kiʻekiʻe loa he 27-wikiwiki 4, ka lakio kia liʻiliʻi loa he 0.73 (0.69)

Mai kēia hiki iā kākou ke ʻike i ka ʻokoʻa ma waena o lāua. ʻOi aku ka nui a liʻiliʻi paha o ka lakio kia o ka 27-wikiwiki a me ka 24-wikiwiki ma mua o ka 21-wikiwiki, hiki iā ia ke hoʻoikaika iā ʻoe e holo wikiwiki a hoʻemi i kou ikaika. No ka mea, ʻaʻole like ka chainwheel 24-wikiwiki me ka 21-wikiwiki, hiki i ka chainwheel liʻiliʻi ke loaʻa i ka lakio kia māmā, he pono nui ia i ka piʻi ʻana. Hiki i kahi paikikala 24-wikiwiki ke hoʻokō i ka lakio hoʻoili o 1.07 ʻoiai inā hoʻohana ia i ka lakio wikiwiki 2X1. Inā he 11 ~ 32 ka flywheel, hiki iā ia ke hoʻokō i ka lakio hoʻoili o 1 (ʻo ka lakio hoʻoili liʻiliʻi o ka 21-wikiwiki he 1). No laila, ʻo ka pono ma luna o kahi paikikala 21-wikiwiki o kahi 24-wikiwiki ʻaʻole wale ma ka kia wikiwiki loa, akā ʻoi aku ka nui ma ka kia lohi loa, e maʻalahi ai a ʻoi aku ka ikaika no ʻoe e holo ma nā alanui mauna. Manaʻo wale ka mea holo hou he ʻoi aku ka wikiwiki o ka paikikala 24-wikiwiki ma mua o ka paikikala 21-wikiwiki. Malia paha he kakaikahi ka poʻe e puʻunaue i ka helu o nā niho o kēlā me kēia crank a me ka cassette e ʻike ai i ka ʻokoʻa.

No ke paikikala mauna 27-wikiwiki, ua like kona huila lele me ka mea 24-wikiwiki. ʻO ka ʻokoʻa, ua hoʻoponopono ʻia ka crank mua nui loa mai 42 a 44, kahi kūpono no ka poʻe me ka ikaika kino maikaʻi. ʻO kahi paikikala mauna 24-wikiwiki a i ʻole kahi paikikala mauna 27-wikiwiki ka ʻokoʻa ma waena o nā ʻāpana like ʻole o ke paikikala i hoʻonui ʻia i nā hiʻohiʻona maikaʻi me kona ʻano.