There are only a couple of important parts between the engine and the boiler. There’s an in-line oil reservoir to help combat the corrosive nature of the steam. There is also a check valve.

As one would expect, the design is minimalistic ... enough so that the engine managed 42,000 RPM on a test with compressed air. We eagerly await the equally tiny boiler for a live steam test.

However, steam engines had their own set of shortcomings ... For instance, the Sentinel Waggon Works' water-tube boiler was a hit among railways for its design, where the tubes were heated ...

Steam engine makers have been- occupied ... First—The entire machine, including its boiler, occupies no more room than, an ordinary turning lathe. Second—It is as easy pat together as ...

The first engine would swivel semi-independently from the boiler and second engine to ... signifying what to many was the apex of steam design. Further expansions to the design included four ...