Have you ever spent an hour on a lathe, or a milling machine... have you ever made anything from scratch? I have... There are a lot of these garage engine builders out there... maybe this is the first you have seen. There is a design for a 7 cyl radial, a 9 cyl radial, and an 18 cyl radial. The guys that build these are looking for the work of art they produce and would NEVER put the engine on the nose of a plane... it is their hobby. And they are masters... I have studied the plans and specs... I am not there yet, but my shop will soon be capable of doing it. Now you have to ask; why do it? Anything I do is for flight... building motors is not my hobby... I can appreciate it, but he is one of many doing these things.

If you want to show off, take it to the machinist forums, not the flying forums where the work is not as well appreciated.