Inguqulo evamile yomnyango wegaraji ongaphezulu owawusetshenziswa esikhathini esidlule ubuzokwakhiwa njengephaneli yocezu olulodwa.Iphaneli yafakwa ohlangothini ngalunye ngendlela yokuphakamisa ihinge yesitayela sepharalelogramu engalingani. Izinguqulo ezintsha zeminyango yegaraji engaphezulu manje ngokuvamile zakhiwe kusukela kumaphaneli amaningana ahlanganiswe ndawonye agingqa ohlelweni lwamathrekhi aqondiswa amarola. Umnyango ulinganiswa ngesistimu ye-torsion spring noma i-extension springs.Indlela enenjini elawulwa kude yokuvula iminyango yegaraji ingeza lula, ukuphepha, nokuvikeleka.
• Izicabha zegalaji ze-aluminium zibiza kancane, zilula, azikwazi ukugqwala, futhi azinakekeli kahle. Ajwayele ukubolekwa ngenxa yokuthi i-aluminiyamu ayinamandla futhi awawongi amandla njengoba i-aluminium iyi-conductivematerial ephezulu.
• I-fiberglass kanye nezicabha zegalaji ze-vinyl zingamayunithi ayinhlanganisela, ahlanganisa umgogodla wensimbi ngemuva kwe-fiberglass noma isikhumba se-vinyl. Futhi banezigaba eziyisisekelo ezifakwe i-polyurethane, noma olunye uhlobo lokufakwa kwegwebu. Le minyango ye-premium ingafanisa iminyango yegaraji yensimbi, futhi ibe ukulingisa okungokoqobo kokhuni (okungukuthi amayunithi e-fiberglass), kodwa ingase ibize kakhulu kunamayunithi ensimbi.
• Izicabha zensimbi sezivamile futhi zitholakala ngobukhulu obuhlukahlukene nezitayela, zinikeza amandla nokuvikeleka, ziyancintisana, futhi zingaba nenani lokuzikhethela lokuvikela. Amandla engeziwe atholakala ngezingqimba ezimbili noma ezintathu zensimbi enenombolo yegeji ephansi (amaphaneli ensimbi angama-23-24).
• Izicabha zegaraji lezinkuni zinikeza ukukhanga kobuhle, kodwa zilungiswa kahle futhi zingabiza. Iminyango yegalaji yokhuni enenani eliphansi ingase isongwe futhi iphuke kalula.
