Dave wrote in
:



I would think that many of the drawbacks could be overcome with modern
control systems. From what I have read the Doble did solve most of the
problems of previous attempts. However, it was more expensive to build
and overcome by the cheapness and convenience of gasolne engines. The
ability to burn any available fuel could make a difference in the
future.


Yes, absolutely. Could happen!

I've always found it an extremely attractive form of engineering. Almost
magical in the way it works.



Bertie