Good LORD!! Everybody viewing this site has got to look at the links above to Barry Hares' real, running, 1/5 Rolls Royce Merlin and David Glen's 1/5 scale Spitfire. I was half-kidding about somebody building a Merlin, but there it is...more than 20 years ago, too! The problem I see putting this incredible engine in a flying model is that it's weight would require an airframe strong enough that the wing loading would be off the chart for a flyable model aircraft. Anyone know what use the engine was put to, other than making the rest of us feel like hopeless amateurs?