If an electric motor or other power source is coupled to any one of the three crankshafts, the three crankshafts being interconnected by {HEAD ~ the three pulleys} 227 and {TAIL ~ the belt} 228, will all rotate and turn the cranks 223 in the same direction 
If an electric motor or other power source is coupled to any one of the three crankshafts , the three crankshafts being interconnected by { HEAD ~ the three pulleys } 227 and { TAIL ~ the belt } 228 , will all rotate and turn the cranks 223 in the same direction
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 HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH