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John Moore, Crewe, Cheshire, United Kingdom firstname.lastname@example.org
The Cygnet Royal, a radial steam
engine designed by Edgar T. Westbury. 7/27/2003
The Engine stands 4" high and runs very well on 5 to 80 PSI of air, being rotary there is very little vibration and the exhaust note sounds like a muffled i/c engine.
When run on steam the engine tightens up after a couple of minutes running, I think this is due to being made with too tight a tolerance on the steam control valve and the different expansion rates of aluminum and cast iron. I think it just needs an hour of running in on steam.
The castings and plans were obtained from Woking Precision Models (there are a lot more Westbury engines, mainly i/c on this web site) at a cost of about $100.
2) Showing my own design steam control valve to give fully variable forward/reverse. the engine is timed to run in one direction only, but runs perfectly well in reverse)
3) Shows rear mounted rotary steam chest.
Copyright 2003, Florida Association of Model Engineers and engine builder as noted above, All rights reserved.