Tsigiro yemhepo yekumanikidza tsvimbo ndiko kuisirwa kweimwe kana anopfuura mhepo simbi dzemhepo pakati peinjini hood nemuviri wemotokari, uye elasticity yemhepo inomanikidza tsvimbo inogadzirisa injini hood munzvimbo yakavhurika.Iyi nzira yekutsigira iri nyore, yakareruka, iri nyore kushanda, uye haizokonzeri kukanganisa kumuviri wemotokari panguva yekushandiswa.