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Willans (central valve) triple expansion engine

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12/03/2013 18:22:07

I saw an example of one of these engines during a visit to the London Science Museum. Is there any example known of a model made of this design? It would be a machining challenge to get the timing correct.

I was disappointed by the model of the marine TE engine that I found which had not reversing mechanism. Since I have just machine and set the split excentrics for my model I had expected to see an example of how it should be done at the museum - I have calculated that the finished excentrics are 13% (by volume) of the materials I started to machine.

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