3 cylinder valveless engine

This is my favourite engine. Its big, and wierd, and sounds like a spitfire when its running. I have no idea who made it, it is unsigned.

It has three cylinders of 1 inch bore and stroke and a grand total of 12 moving parts, and roughly two dozen parts to the engine as a whole. It works by covering and uncovering ports in the spigots at the tops of the cylinder heads. Its also a uniflow design. It is brutally powerful, and did i mention it sounds like a spitfire?