Ukushisa okuphezulu nokucindezela okuphezulu 1:3 isilinganiso esiphansi sokugeza esilinganisa amandla okonga umshini wokudaya we-bobbin, lo mshini uphambili kakhulu, uwonga kakhulu amandla, umshini omusha wokudaya onobungani kakhulu wezemvelo, uphule ngokuphelele indlela yokudaya yendabuko yomshini wokudaya.
Ngaphansi kwesimo sokungashintshi ifomula yokuqala yokudaya, ingavumela umsebenzisi kugesi, amanzi, umusi, izinsiza kanye namahora omuntu ukuze afinyelele uhla oluphelele lokunciphisa, futhi angakwazi ukuqeda umbala futhi anciphise kakhulu umehluko we-cylinder.