A. Pearson

I see that this thread seems to have run out of steam, a couple of years back - I've been working on an 1/8 scale reconstruction of Brunton's Newbottle engine as an experimental archaeology project . . . Using only written sources, patent drawings and relict evidence from contemporary engines and their remains, I have produced a 15 page paper complete with a series of scale CAD drawings that describe and illustrate the complete workings of this engine. My contribution to the history of this enigmatic machine I hope can be demonstrated with the production of a working model, running on wagonway track. The model is scratch-built and has to be of fairly large scale in order to utilise kinetic energy, necessary to operate the various processes described by William Brunton - all simple concepts, but nonetheless the logic of a problem-solving clockmaker. I'll post further replies after I have the boiler with its working cylinders fitted to the wheeled carriage, which should be some time later this month, if this issue with the pandemic continues, as this is providing the luxury of some free hours to dedicate to construction work.