Kule veki, siphuhlise i-crankshaft entsha yomthengi waseBritane womdyarho. Oomatshini abanamava kumzi-mveliso bagqwesile kwaye bakwazi ukuhlangabezana neemfuno ezichanekileyo zomthengi kwimizobo. Nangona ubuninzi buncinci, sihlala sinyanisekile kumxhasi, sinxibelelana kwaye senze uhlengahlengiso kunye nabo amaxesha amaninzi ngexesha lomzobo kunye nenkqubo yophuhliso lwangempela. Siyathemba ukuba umxhasi uya kufumana iziphumo ezilungileyo kugqatso emva kokufumana iimpahla.