Inkunga yuzuye:Umubare wibinyamakuru byingenzi bya crankshaft ni kimwe kirenze umubare wa silinderi, ni ukuvuga ko hari ikinyamakuru nyamukuru kumpande zombi za buri kinyamakuru gihuza inkoni. Kurugero, crankshaft yuzuye ya moteri itandatu ya silinderi ifite ibinyamakuru birindwi byingenzi. Moteri enye ya moteri ifite crankshaft ifite ibinyamakuru bitanu byingenzi. Ubu bwoko bwinkunga, imbaraga nubukomezi bwa crankshaft nibyiza, kandi bigabanya umutwaro wikintu nyamukuru kandi bigabanya kwambara. Moteri ya Diesel na moteri nyinshi za lisansi ikoresha iyi fomu.

Igice kimwe gishyigikiwe:Umubare wibinyamakuru byingenzi bya crankshaft ni munsi cyangwa bingana numubare wa silinderi. Ubu bwoko bwinkunga bwitwa crankshaft idashyigikiwe byuzuye. Nubwo umutwaro nyamukuru wubwoko bwinkunga ari nini cyane, bigabanya uburebure rusange bwikigina kandi bikagabanya uburebure bwa moteri. Moteri zimwe za lisansi zirashobora gukoresha ubu bwoko bwa crankshaft niba umutwaro ari muto.