ʻO ka ʻoi aku ka paʻakikī, ka hoʻokaʻawale uila maikaʻi a me ka hopena liʻiliʻi i ka mahana. ʻO ke kūpaʻa ʻana o ke kolo, ke kūpaʻa luhi, ke kūpaʻa friction maikaʻi, ka lole haʻahaʻa a me ka paʻakikī kiʻekiʻe.