Pa ma revs otsika, kuyenda kobwerezabwereza kwa ma pistoni a injini kumakhala pang'onopang'ono, ndipo mphamvu yokoka yokokera kusakaniza mu masilindala imachepetsedwa. Panthawiyi, valavu yolowera iyenera kutsegulidwa kwa nthawi yayitali, ndipo pisitoni ikathamangira kumunsi kwakufa ndikulowa muzitsulo zoponderezedwa, valve yolowetsa imatsekedwa nthawi yomweyo kuti gasi wosakanizidwa asatuluke. Pomwe camshaft yokhala ndi gawo lopingasa "lokuthwa" imatseka valavu yolowera mwachangu, camshaft "yozungulira" imatenga nthawi yayitali kuti itseke. Choncho, pa otsika rpm injini amafuna "lakuthwa" camshaft.

Pa ma revs apamwamba, pisitoni ya injiniyo imabwereranso mwachangu, ndipo mphamvu yokokera kukoka kusakaniza mu silinda imakhala yamphamvu. Ngakhale pamene pisitoni imathamangira kumunsi kwakufa ndipo yatsala pang'ono kulowa muzitsulo zoponderezedwa, mpweya wosakanikirana umalowa mu silinda panthawiyi ndipo sungathe kusokonezedwa. Zoonadi izi ndi zomwe tikufuna, chifukwa ngati zambiri zosakaniza zimatha kukokedwa mu silinda, ndiye kuti injini ikhoza kupeza mphamvu zambiri. Panthawiyi, tifunika kutsegula valavu yolowetsa pamene pisitoni ikukwera, ndipo musatseke kwa nthawiyi. "Rounder" camshaft tsopano ikupezeka!

Mawonekedwe a gawo la injini ya kamera amagwirizana kwambiri ndi liwiro la injini. Kunena mwachidule, pama revs otsika timafunikira "sharper" camshaft; pa ma revs apamwamba timafunikira camshaft "yozungulira".