Paul  Is the 12A rotary engine any good for aero-applications ?  Are parts
available, apex seals, etc ?   I'm aware that the 13B, from an '89 or later
Mazda is currently the rotary of choice.   I was looking at E-Bay  #
200021736629.  A complete firewall-forward package is very attractive,
perhaps for an Air Camper, Smith Mini-Plane, or other airframe with modest
power requirements.   George

Sure. Its fine. It just does not have the power to weight ratio
of the 13B. If you are looking for something up to 150 HP
its fine. A bit heavy for 150 HP but not bad. The big advantage
is they are plentiful, free or cheap. I think parts are still
available. Check with Mazdatrix or the other Mazda part sellers.
I am sure the car dealer would be spacial order if they still
sold 12A parts. A lot of the road racers are still forced to
race them.

BTW If the car racing world allowed P-port rotaries with no
minimum weight restrictions there would be no piston engines
racing anywhere.

Paul Lamar ...No rotor no motor.

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