Ta yaya ake tantance rabon watsawa na sprocket?

Lokacin da ake lissafin diamita na babban sprocket, ya kamata a yi lissafin bisa ga waɗannan maki biyu a lokaci guda:
1. Yi lissafi bisa ga rabon watsawa: yawanci rabon watsawa yana iyakance zuwa ƙasa da 6, kuma rabon watsawa ya fi dacewa tsakanin 2 da 3.5.
2. Zaɓi rabon watsawa bisa ga adadin haƙoran pinion: idan adadin haƙoran pinion ya kai kimanin haƙora 17, rabon watsawa ya kamata ya zama ƙasa da 6; idan adadin haƙoran pinion ya kai haƙora 21~17, rabon watsawa shine 5~6; idan adadin haƙoran pinion ya kai 23~ Lokacin da pinion yana da haƙora 25, rabon watsawa shine 3~4; lokacin da haƙoran pinion suka kai haƙora 27~31, rabon watsawa shine 1~2. Idan girman waje ya ba da dama, yi ƙoƙarin amfani da ƙaramin sprocket mai yawan haƙora, wanda yake da kyau don kwanciyar hankali na watsawa da ƙara tsawon rayuwar sarkar.
Ma'aunin asali na sprocket: pitch p na sarkar da ta dace, matsakaicin diamita na waje na nadi d1, pt na firam na layi da adadin haƙoran Z. An nuna manyan girma da dabarun lissafi na sprocket a cikin teburin da ke ƙasa. Diamita na ramin sprocket hub ya kamata ya zama ƙasa da matsakaicin diamita da aka yarda da shi. Ma'aunin ƙasa na sprockets ba su ƙayyade takamaiman siffofi na sprocket haƙoran ba, sai dai matsakaicin da mafi ƙarancin siffofi na sararin haƙori da sigogin iyaka. Ɗaya daga cikin siffofin haƙoran da aka fi amfani da su a halin yanzu shine baka mai zagaye uku.