Yiziphi izizathu zokukhala okungavamile komkhawulo womnyango?
1. Izinkinga zenqubo yokuklama nokukhiqiza, ubuso bengalo elinganiselwe kanye nohlangothi lwe-roller kusekela umsindo ongajwayelekile, umgodi wehinge lomnyango kanye nomgodi ojikelezayo womkhawulo awuhambisani nhlobo;
2. Vula noma uvale umnyango ngobudlova isikhathi eside, okuholela ekuguqukeni kwamandla, ekugobeni nasekulimazeni komkhawulo womnyango;
3. Kubangelwa ukuhlanganiswa okungafanele;
4. Ukuguga komkhawulo womnyango noma ukuwohloka komnyango ngesikhathi sokuwusebenzisa;
5. Ubuso bomkhawuli buwukuntuleka kokuthambisa.
Inhloso yomkhawulo womnyango ukukhawulela izinga lokuvulwa komnyango. Ngakolunye uhlangothi, ingakhawulela ukuvulwa komnyango okuphezulu ukuze ivimbele ukuthi uvuleke kakhulu, kanti ngakolunye uhlangothi, ingagcina umnyango uvulekile uma kudingeka, njengalapho imoto ipakwe endaweni yokuma noma lapho kunomoya ojwayelekile, umnyango ngeke uvale ngokuzenzakalelayo. Kunemingcele emibili evamile yomnyango wemoto, i-torsion bar spring limiter kanye ne-pull bar limiter. Kusukela ezindlekweni zokukhiqiza noma zokulungisa, i-pull bar limiter ingcono kune-torsion bar spring limiter, ngokwemvelo ivame kakhulu, kodwa umphumela womkhawulo we-pull bar limiter akuyona i-torsion bar spring limiter ngakho-ke kalula, ukusebenza kuqondile kakhulu, ezinye izimoto zizwa sengathi umkhawulo usobala kanti ezinye izimoto azibonakali.
