Ra'ayi
Akwai birkin diski, birkin ganga, da birkin iska.Tsofaffin motoci suna da ganguna na gaba da na baya.Motoci da yawa suna da birkin diski na gaba da na baya.Saboda birki na diski yana da mafi kyawun ɓata zafi fiye da birkin ganga, ba sa saurin lalacewa a ƙarƙashin babban birki mai sauri, don haka tasirin su mai sauri yana da kyau.Amma a ƙananan gudun birki na sanyi, tasirin birki bai kai kamar birkin ganga ba.Farashin ya fi birkin ganga tsada.Don haka, yawancin motoci masu tsayin daka zuwa tsayi suna amfani da cikakken birki, yayin da motocin talakawa ke amfani da ganguna na gaba da na baya, yayin da manyan motoci da bas-bas da ke buƙatar ƙananan gudu kuma suna buƙatar babban birki har yanzu suna amfani da birki.
Ana rufe birkin ganga da siffa kamar ganguna.Akwai kuma tukwanen birki da yawa a kasar Sin.Yana juya lokacin tuƙi.Takalmin birki mai lanƙwasa ko madauwari biyu ana gyarawa a cikin birkin ganga.Lokacin da aka taka birki, takalman birki guda biyu suna shimfiɗa a ƙarƙashin aikin silinda na birki, suna goyan bayan takalmin birki don shafa bangon ciki na birki don ragewa ko tsayawa.
