Ho sila le ho silalikere tsa helicalLisete tsa li-gearbox tsa helical ke ts'ebetso e hlokolosi e hlokang ho nepahala le boiphihlelo. Mosebetsi ona o rarahaneng o kenyelletsa tšebeliso ea mechini e tsoetseng pele ho bopa le ho ntlafatsa meno a li-gear, ho netefatsa hore li lumellana hantle. Moralo oa helical ha o ntlafatse phetiso ea matla feela empa hape o fokotsa khohlano le lerata. Ka ho siloa le ho siloa ka thata, lisete tsa li-gear li fihlella boemo bo phahameng ba ho tšoarella le katleho, e leng se etsang hore li be ntle bakeng sa lits'ebetso tse hlokang torque e phahameng le ts'ebetso e boreleli.
Likhamphani tse leshome tse holimo Chaena, e hlomelitsoe ka basebetsi ba 1200, e fumane liqapi tse 31 kaofela le litokelo tsa molao tse 9. Lisebelisoa tsa tlhahiso tse tsoetseng pele, lisebelisoa tsa ho phekola mocheso, lisebelisoa tsa tlhahlobo.