Ol kain kain samting.
1. Krenksef: Em i bikpela samting tru insait long ensin.
2. Camshaft: Em i wanpela samting insait long ensin bilong piston.
Ol difren prinsipol.
1. Crankshaft: Ol i save kisim krenkseft long ol samting i kamap long strong bilong sentrifugal fos bilong roteting mas, na dispela i save senisim ol ges inersia fos long olgeta taim na inersia fos i save bekim bek, na dispela i mekim na krenksef i save kisim ol lod bilong bending na torsen.
2. Camshaft: Spid blong hem i hae tumas yet. Ol i save wokim kamsef long hai- kwaliti kabon stiel o aloi stiel, na ol i ken tromoi tu long aloi kast ain o daktil ain. Ol i save polisim ol ples bilong wokim ol nius na kam bilong kam bihain long ol i bin kisim hat.
Ol narapela narapela wok.
1. Crankshaft: Em i karim fos i kam long rot bilong konektim stik, na em i tanim i kamap tok autput long rot bilong krenksef na i draivim ol narapela samting long ensin i go long wok.
2. Camshaft: Kontrolem opening mo klosing blong valv. Nomata we kamsef i tantanem long haf spid blong krenksef long wan fo-stroke enjin (long wan tu-stroke enjin we hem i tantanem long sem spid olsem krenksef), hem i oltaem spid tumas yet mo i mas stanap strong long plante tok.