CRAN mentioned the heavyweight engine in the Robbo.
I think (and hope) it's only a matter of time before we see a small helicopter powered by a modern diesel engine, running on Jet Fuel.
This type of engine has got many advantages over the old (nay, ancient) technology, 4 stroke AVGAS engine, one of them being a reduction in weight.
Another advantage is far superior fuel economy on far cheaper fuel (+-35% of the cost of AVGAS).
NO possibility of carb icing either (no carb or venturi).
No possibility of magneto failure (no magnetos).
No mixture control to worry about.
Need I say more?
