A crankshaft 1 wherein said {HEAD ~ crankshaft body} is steel and said {TAIL ~ balancer weights} are iron 
A crankshaft 1 wherein said { HEAD ~ crankshaft body } is steel and said { TAIL ~ balancer weights } are iron
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH