forming said {HEAD ~ end members} with an exterior diameter greater than the diameter of the bore of the jacket member, with a machining allowance at the interior thereof, and with a machining allowance at the faces thereof which will correspond to the end faces of {TAIL ~ the rotor} 
forming said { HEAD ~ end members } with an exterior diameter greater than the diameter of the bore of the jacket member , with a machining allowance at the interior thereof , and with a machining allowance at the faces thereof which will correspond to the end faces of { TAIL ~ the rotor }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL