Rather than turn the crank from solid stock, I elected to "build it up" by silver soldering the various parts.  The next two photos show how it looked after silver soldering.
The tapered ends were turned on the main shaft, along with drilling and tapping the ends.  Separate pieces were milled and drilled to complete the assembly.
It looks pretty rough at this point.  Needs polishing, and the center portion of the crankshaft needs to be sawed out.  Everything is parallel, and dimensionally correct.
What a difference some polishing, grinding, and filing  makes!  The  completed crankshaft is shown above.  Was this approach any better or faster than turning from solid stock?  Certainly not any worse, since all tolerences have been held, and  (for me)  it was somewhat faster, based on previous experience turning cranks from a solid piece of stock..
FABRICATING THE CRANKSHAFT.
PAGE LINKS FOR CONSTRUCTING THE EAGLE.