Ukugaya kunye nokusilaizixhobo ze-helicaliiseti zehelical gearbox yinkqubo ecokisekileyo efuna ukuchaneka kunye nobuchule. Lo msebenzi untsonkothileyo ubandakanya ukusetyenziswa koomatshini abakumgangatho ophezulu ukubumba nokucokisa amazinyo eegiya, ukuqinisekisa ukuba ziyadibana ngokugqibeleleyo. Uyilo lwe-helical alwenzi kuphela ukuhanjiswa kwamandla kodwa lunciphisa ukukhuhlana kunye nengxolo. Ngokuhamba ngokungqongqo kunye nokusila, iiseti zegiya zifikelela kwinqanaba eliphezulu lokuzinza kunye nokusebenza kakuhle, zizenza zilungele usetyenziso olufuna itorque ephezulu kunye nokusebenza kakuhle.
Amashishini aphezulu alishumi eTshayina, ixhotyiswe ngabasebenzi abangama-1200, ifumene izinto eziyi-31 zizonke kunye namalungelo awodwa omenzi wechiza ali-9 .Izixhobo zokuvelisa eziphucukileyo, izixhobo zokunyanga ubushushu, izixhobo zokuhlola.