and faced to everyone problem in our hobby : what is next ?? Junkyard ?
To me, that's an easy one: No engine or installation is ever "finished"... there always is room for improvement. So anything that gets shelved, at some point in time is going to get pulled off that shelf whenever I have another silly idea that might or might not work.
I never know what that idea might be. Heck, only 4 months ago or so in a wild guess, I bought this steam plant of mine, and I had no other plans for it than to run it, put it in a simple boat, and be done with it.
The "and be done with it" part never happened... Spent three months of continuous messing about, just a week ago I thought I improved everything there was to improve, but as I type this, I am again improving things and extending the installation.
By the way, that is an impressive and beautiful collection of engines and installations you have there. Hats off to you, sir.