A small 2″ diameter fuel tank contains a propane mixture to fuel the boiler. Two Regner 40451 Piccolo steam engines make up the drive train, with mechanical linkages controlled by servos to ...

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.

Our engraving represents a side elevation of a compact form of steam fire engine ... steam boiler, provided with three hundred Ii inch upright tube" and connected to the supply water tank ...