More pictures.

We need to bug the Diamond owner on a regular basis to put the two 
rotor back into production.

Doug, if your friend in Japan is designing a small rotary I have 
a few suggestions. Scale down the Mazda but use detonation coated
aluminum end housings. One of the problems with the Diamond
is the air cooled rotor. That sucks a lot of power so the BSFC
is worse. The other major problem it has is the lack of
a pressurized oil system. That leads to the needle rotor bearing
and the air cooled rotor.

Needle bearings don't like high RPM so they skid. That limits
the RPM of this engine to about 6500 while it should be turning
over 12,000 with twice the HP if it had plain journal bearings
like the Mazda. Also the needle bearings require super precision
in the rotor bearing diameter and the e-shaft.

Paul Lamar
 
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