Chisindikizo cha mtundu wa M2 ndi chisindikizo chobwerezabwereza chomwe chitha kugwiritsidwa ntchito posindikiza kunja ndi mkati mwa circumferential, ndipo ndi yoyenera pazovuta komanso zofalitsa zapadera.
Itha kugwiritsidwa ntchito mobwerezabwereza komanso mozungulira mayendedwe
Amatha kutengera zamadzimadzi ndi mankhwala ambiri
Low coefficient of kukangana
Palibe kukwawa ngakhale ndi kuwongolera bwino
High dzimbiri kukana ndi dimensional bata
Imapirira kusintha kwachangu kutentha
Palibe kuipitsidwa kwa chakudya ndi zakumwa zamadzimadzi
Akhoza kusabala
Nthawi yosungirako zopanda malire