You guys keep posting pictures of those machines and the nightmares of working in those shops are starting to come back to me again.
a rotary engine to boot? no precession they at all... or P factor, etc. Some quick research into rotary engines show them as even though they were 4 stroke engines they drew in a mix of gas and castor oil - leaving a smoke trail that pilots would inhale and give them diarrhea... a sure marketing point for this one wheeled craziness.
I think you would find this to be a radial engine. No big deal but they are different. That's pretty early for them. Lots of thought went into this creation.