Power may be applied to any of the crankshafts by a motor coupled to the crankshaft or power may be applied to any crankpin by {HEAD ~ a pitman} connecting the piston of an internal combustion engine or {TAIL ~ fluid motor} to the crankpin 
connecting
Power may be applied to any of the crankshafts by a motor coupled to the crankshaft or power may be applied to any crankpin by { HEAD ~ a pitman } connecting the piston of an internal combustion engine or { TAIL ~ fluid motor } to the crankpin
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH