Iketanga lishayelwa ukuhambisa i-hopper ukuze iphakamise ngokushesha ukuze kuthulule okubalulekile.Ngokukhethekile ukusetshenziswa okukodwa kwezinto ezinkulu kanye nezinto ezinkulu ze-viscosity njengezinkukhu, ukudla kwasolwandle namaphiko enkukhu, njll.