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Robert Stirling's Models of the "Air Engine"
Both models are now very fragile, but James was granted unprecedented access to measure and inspect them by both Universities. From the resulting drawings James made half-size models of both engines, but whilst the building instructions here refer to these models, the drawings are dimensioned full size, with metric and decimal inch measurements for accurate conversion. Hardwoods were used considerably in the original engines, but other than possibly for the flywheel (12 inch diameter in the original), no castings are required. Whilst they may look similar, there are considerable differences between the two prototypes, so that making replicas or models of both is far from an exercise in repetition. This book is an important historic record of two unique survivors from the very early days of mechanisation, and a tremendous ‘projects’ book, providing the model engineer with full drawings and building instructions to build replicas, or models of both these fascinating engines.
100 page, high quality paperback, full of drawings and photographs of all parts of the engines.
