OK Mark. Thanks a bunch. Looked like you did a lot of work on this.
I will give up on the idea.

Back to geared turbo charger parts. I kind of like the way Caterpillar
apparently did it. Looking at the lousy picture I have they appear merely
to have extended the shaft out of the compressor on what pretty much looks
like a stock turbo charger. Perhaps a  final belt drive to the e-shaft
will mitigate any rotational inertia problems.

Paul Lamar

Come to think of it that configuration might have some interesting
transients for car applications. If it were not for the turbine 
it would look like your typical geared centrifugal super charger :-)

Paul Lamar
 
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