“Will the Cri-Cri fly at all on one engine?”
There are a variety of engines used, but I have seen one flown on one engine as part of a display in France and it was doing aerobatics…
It has a reputation of being hard to build, but Dyn Aero do sell some bits for them. His next plan build aircraft, the MC100 Banbi was also quite a challenge, until it was redesigned into the MCR01 by Mr C Robin. Mine took me 1800 hours, but I did get there in the end!
Rod1