experienced by the inner flow duct 20 thus the inner lamination ring to inner flow duct gap and the inner stator temperatures are minimized the inner stator is supported on a support ring 64 which itself is seated on a base 66 the center post 32 and base 66 form an integral welded structure made from a pipe or solid bar section and a flat discshaped plate respectively three ribs 68a c see fig1 are machined from rectangular bar stock and bolted onto the center post at three equally spaced locations around the post periphery flats are machined on the center post to more easily accommodate the ribs the center post base and ribs are all made of type 304 stainless steel the resulting spine assembly provides complete radial alignment of the inner lamination rings via the ribs 68a c the outer diameter of the three ribs is finish machined on a lathe after assembly onto the center post providing optimum concentricity to the spine axis the shape thus obtained provides a nearly perfect cylindrical form over which the closely fitting alignment rings with lamination packages attached are installed in complete radial alignment in plan view three 34 bays 34 are defined by the alignment ring inner diameter the center post outer diameter and the ribs coil to coil electrical connections are made in these bays as the stator is built with all of the coil leads which terminate in a given bay corresponding to a single phase of power for three phase power three bays are required it is essential that the ratio of the number of lamination packages to the number of ribs be an integer number to avoid interferences in assembly as seen in fig5 and 8 grooves 62 and 62 39 are.