Gears unug-wade (Helical Gear Set) ee gudbinta EV, Gears Helicical waa ilko marsho cylindrical ah oo u gudbiya qulqulka hal usheeda ilaa mid kale.Waa mid fudud, hufan oo is haysta, taasoo ka dhigaysa doorasho caan ah codsiyo badan.
Qalabka noocaan ah waxaa loogu talagalay in uu u adkeysto qulqulka sare iyo shuruudaha xawaaraha sare ee codsiyada gawaarida korontada waxaana badanaa laga sameeyaa walxo horumarsan sida birta alloy ama biraha kale ee waara.