This excellent Economy engine by R Greenwell started out as a set of castings and drawings from the Engineers Emporium. But after discovering a book on the history of Hercules Co engines, it was decided to re-draw the engine based on illustrations in the book. The final result is a wonderful example of superb finishing of metal. Visitors looking at the engine at the Harrogate show were heard to question if it had been chromium plated. You my wonder looking at the photos, too. But it really is all polished by hand.

The crankshaft and con rods are made from flame-cut EN8. The fuel mixer and non-return system, tank filler, rocker and governor are all made from bronze and steel bar stock. No SKT cap screws are used. All nuts were turned and all of the studs and bolts down to No 2 ANC were screw cut. with the exception of brass screws in the magneto and the decals. Engraving was done by a local firm.

Drip feed oilers were made from solid, each having 23 components. Bowl glasses were made from old laboratory tube, and the small sight glasses cut from circuit board fuses. With few exceptions everything on the model was made by Mr Greenwell, right down to the 1/16in. split pins.