Ho sila le ho sila halisebelisoa tsa helicalsete bakeng sa li-gearbox tsa helical ke ts'ebetso e hlokolosi e hlokang ho nepahala le boiphihlelo. Mosebetsi ona o rarahaneng o akarelletsa tšebeliso ea mechine e tsoetseng pele ho bōpa le ho hloekisa meno a likere, ho etsa bonnete ba hore li kopana hantle. Moralo oa helical ha o ntlafatse phetiso ea motlakase feela empa o boetse o fokotsa likhohlano le lerata. Ka ho ts'oara le ho sila ka thata, lisebelisoa tsa lisebelisoa li fihlella boemo bo holimo ba ho tšoarella le ho sebetsa hantle, li li etsa tse loketseng lits'ebetso tse hlokang torque e phahameng le ts'ebetso e boreleli.
Likhoebo tse leshome tse holimo Chaena, e nang le basebetsi ba 1200, e fumane kakaretso ea 31 le litokelo tsa litokelo tsa 9. Thepa e tsoetseng pele ea tlhahiso, thepa ea ho futhumatsa mocheso, lisebelisoa tsa ho hlahloba.