An electric coil 2 is disposed on {TAIL ~ the outside} while a rotor is disposed on {HEAD ~ the inside}, assisting in heating dissipation 
An electric coil 2 is disposed on { TAIL ~ the outside } while a rotor is disposed on { HEAD ~ the inside } , assisting in heating dissipation
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH