ʻO ke sila pālua, ʻo ka uhi pale i kau ʻia ma ke apo o loko e pale aku i nā ʻāpana haumia ʻino a hana i ka labyrinth me ka ʻāpana pepa o ke sila; a laila ke ʻano sila S, me ka labyrinth ma waena o ka ʻāpana pepa a me ka lehelehe laholio e alakaʻi ana i ke sila pili. ʻO ka friction a me nā wikiwiki like me S akā ʻoi aku ka maikaʻi o ka pale ʻana i nā ʻāpana haumia ʻino. He ʻōnaehana sila maikaʻi loa ia: pale ka ʻāpana pepa i ke sila mai ka lepo, ka lepo a me nā ʻāpana ʻino. I ka manawa like e hana ai i ka labyrinth me ka ʻāpana laholio. Hāʻawi ka ʻāpana laholio i ke sila pili e pale ai i ke komo ʻana o nā haumia maikaʻi, ka wai, ka makū, ka mahu a pēlā aku. Kūpono no nā kūlana kaumaha ma muli o ka pale maikaʻi ʻana i nā mea ʻē. Hoʻohana ʻia me nā bearings Y (maʻamau).