Kwizikhephe, aizixhobo zeentshulubeumphiniiqhele ukusetyenziswa kwindlela yokulawula. Nantsi ingcaciso ethe kratya yendima yayo:

1. Inkqubo yokuLawula: Umbunguumphinilicandelo eliphambili kwisixhobo sokuqhuba isikhephe. Iguqula igalelo elijikelezayo elisuka kwihelm (ivili lokuqhuba) libe sisindululo somgca okanye esiphindaphindayo esisetyenziselwa ukuhambisa umphini wokujika ngasekhohlo okanye ekunene, ngaloo ndlela ulawula icala lephenyane.

2. **Isixhobo sokuNciphisa**: Ishafti yeentshulube idla ngokuba yinxalenye yenkqubo yokunciphisa izixhobo. Ivumela umlinganiselo ophezulu wokunciphisa, oku kuthetha ukuba ukujikeleza okuncinci kwevili lokuqhuba kubangela ukunyakaza okukhulu kwe-rudder. Oku kubalulekile kulawulo oluchanekileyo.

3. **Ukusasazwa komthwalo**: Isixhobo seentshulube kunye neshafti zinceda ekuhambiseni umthwalo ngokulinganayo, nto leyo ibaluleke kakhulu ekusebenzeni ngokutyibilikayo nokuthembekileyo, ngakumbi kwimikhumbi emikhulu apho ireyidi inokuba nzima kakhulu.

4. **Ukuqina**: Ishafti zeentshulube ziyilelwe ukuba zomelele kwaye zimelane nemekobume enzima yaselwandle. Ngokuqhelekileyo zenziwe ngezinto ezinokuxhathisa ukubola kunye nokunxiba.

5. **Ugcino**: Lo gama iishafti zeentshulube ziyilelwe ukusetyenziswa ixesha elide, zifuna ukugcinwa rhoqo ukuqinisekisa ukuba zisebenza ngokuchanekileyo kwaye kuthintelwe nayiphi na imiba enokuchaphazela isikhephe sokuqhuba.

6. **Ukhuseleko**: Kwiinqanawa, ukuthembeka kwenkqubo yokuqhubela phambili kubaluleke kakhulu kukhuseleko. I-worm shaft idlala indima ebalulekileyo ekuqinisekiseni ukuba inkqubo yokulawula isebenza kakuhle kwaye iqikeleleke.

Isishwankathelo, i-worm shaft iyinxalenye ebalulekileyo yenkqubo yokulawula kwiinqanawa, inika indlela ethembekileyo nefanelekileyo yokulawula ulwalathiso lwenqanawa.