Instructions for making a balanced e-shaft

For general information the spline in the clutch
disk in the 12A rotary
engine is less than a .9" inside diameter.

A Mazda e-shaft lobe has approximately a 2.92"
diameter. I guess it has
about .01" hard casing around it

With driveshaft quality steel with a ¼" center oil
hole  make a 1.82"
diameter spline with eighteen teeth the desired
length of your engine.

Make a broach the same as the aforesaid spline and
have it case hardened.

Drill out the oil hole in the e-shaft lobe
sufficiently to enable pressing
the broach through creating interior teeth in the
lobe.

Also drill holes in bearing size steel (adapters)
and press the broach
through to place them as desired on the spline in
your engine configuration.

Weld whatever end type you desire to the adapters.

It is suggested that bearing support be provided at
intermediate housings.

In a two and four rotor configuration the lobes
would be placed at 0 and 180
degrees.

In a three rotor configuration the lobes would be
placed 120 degrees apart..

Kenneth McKenzie

Are there no comments or critiques of this approach?
Is this practical? The welding portion seems
questionable and unnecessary. This co. makes custom
crankshafts the old fashioned way; no CNC.
http://www.truetube.com/
regards, Robert LeClercq

Somebody should get a quote from them on a one rotor
shaft.

Paul Lamar

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