This may be a really stupid question but...
Is there a way to put some kind of gears around the lobe
on the E-shaft to reduce the speed of the shaft?
-Jeff  (the other Jeff)

None practical but the late great Vance Jaqua proposed this.

That is not to say you could not design the rear housing
to incorporate a planetary. That would save some over all weight.
Good idea if you are designing a new aluminum rear housing.

Paul Lamar ...No rotor no motor.

At the present layout of the Rotary, the crankshaft rotates three times
rotor speed and the housing is stationary, in theory there is no load on
the 2:3 gearing between rotor and housing. ( in practis there is due to
vibrations).

If power is taken off from the rotor as proposed by Vance in the sketch,
then the said gearing will be loaded by full engine torque. This is not
practical. A gearing set will have to be at both rotor ends to avoid
skewing and seizure of the rotor. Also, there is no space to attach the
universal joint to the rotor when the side wall is fully covering the
total chamber area toward the centre.

The best, I think, is still a planetary as duly promoted by Paul.

Rolf



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