Neil,
I have seen several examples of the Rotec radial. Both the 7 and 9 cylinder I believe. Well made and sweet running modern radial. (love the sound, which is the ONLY thing I don't like about the rotary!) I was a motorcycle road racer and just knew that when the American dominance during the 80's was over that the Aussies and New Zealanders would pick up the torch. Lots of innovation and experimentation there. True in aircraft as well. You guys are as crazy as we are! Must be in the water or something!
Bill