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Part-built triple expansion engine - stock code 8748

A part-built triple expansion engine, which looks to us to be built to the John Bertinat design, serialised in "Model Engineer" magazine, although with various detail difference from other examples we've had in the past.

What you see is what we have of this one - there are no other castings or drawings. Work to date looks quite competently done, although the engine is stiff to turn over.

length/inches 10
width/inches 7
height/inches 8 1/2
cylinder material gunmetal
valve type slide
valve gear Stephensons