For an engine designation gor the Mazda rotaries

why not "Wankel type 13B"

Hank Huddleston  LNC2 with Wankel type 13B.

How about ROTEX  (ROTary EXperimental) That name
will go much better with some people than Mazda 13B,
which is associated with cars.
Bulent

Sound too much like Rotax.

Paul Lamar
 
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