> But ya, haven't found anything of it running on anything but compressed
> air.
>
>
Yeah, it's vapoware. It's been around for many years, and never has gone
beyond the "look, it runs on compressed air" stage. It's an interesting
concept, but just offhand I can tell you that sealing those piston chambers
is likely a major long term reliability issue. The wankel is already a
headache, and it doesn't have a multidimensionally convoluted combustion
chamber seal.

--
John Bange