Le seti ye-heli yevili yevili eyayisetyenziswa kwisikhephe. Izixhobo 34CRONImo6 zeSumm Shaft, unyango lobushushu: i-carburition 58-62HRC. I-Furm Geare Surnit Cusn12pb1 tin bronze. I-heli yevili yevili, ebizwa ngokuba yigiya ye-Worm, luhlobo lwenkqubo yegiya eqhele ukusetyenziswa kwizikhephe. Yenziwe nge-cylindrical molm (ekwabizwa ngokuba sisikrive) kunye nevili le-sorm, eliyigiya ye-cylindrical ngamazinyo anqumle kwipateni esecaleni. I-Worm ye-Wish Gears enempethu, edale igunya eligudileyo kwaye lithule livela kwi-shaft yokufaka kwi-shaft yokuphuma.
Kwibhotile, iigishi zevili zihlala zihlala zisetyenziselwa ukunciphisa isantya seshafti yomthengisi. Igiya ye-Worm inciphisa isantya se-shaft yokufaka, edla ngokuqhagamshelwa kwi-injini, kwaye idlulisela amagunya