Ngokukhula kwamandla ehhashi likagandaganda wasekhaya, izidingo zeshafu yokudlulisela ziya ngokuya zikhuphuka, ngakho-ke sithuthukise amandla amakhulu amahhashi, i-torque enkulu, i-Angle yokudlulisela enkulu. Nakuba kusetshenziswa imodeli efanayo yesiphambano, siqala sandise ishubhu yangaphandle kanye ne-shaft, sithuthukise i-torque futhi sikhulise amandla. Okwesibili ukusebenzisa izesekeli ezenziwe ngokwezifiso, ezincane kuya kwezikhonkwane, ezinkulu kumbhobho wangaphandle kanye ne-shaft. Sikhetha ubuchwepheshe obungokwezifiso kanye nezesekeli eziphezulu, ezinembe kakhudlwana futhi ezingcono kunemikhiqizo evamile. Ithengiswa kahle kakhulu eChina.