I know talk is cheap, but every time I look at a 20-b e-shaft
   I can't help but thing that it's a no-brainer to cut on any decent
   CNC lathe.  I'm sure there's a bit more to it than turning a hunk
   of steel and hardening the crap out of it.  Anyone have any
   in site into what's *really* involved in making a 3 rotor e-shaft?  I
   know a few others have done it.

   Thanks,
   Bob

   I think you are pretty much right.
   I think you need to grind and polish it after it is turned
   and heat treated.
   --
   Paul Lamar ...No rotor no motor.



If you're going to the trouble, build a 4 rotor.  It shouldn't be that
much heavier than the angle valve Lycoming 540's, or any of the
Continental big bore FI engines (520/550).  The parallel valve
carbureted Lycomings are lighter.


Matt-



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