An external rotor comprises an annular case within which is the laminated stack forming the motor drive members and end {HEAD ~ members} at {TAIL ~ each side} of the stack 
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An external rotor comprises an annular case within which is the laminated stack forming the motor drive members and end { HEAD ~ members } at { TAIL ~ each side } of the stack
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 REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH