Scale Trevithick Dredger Engine- the Supports, and crank-webs.
Some photos of progress. I have been busy, but the results are not particularly photogenic.
The support under the chimney end was in the plans as this:
…and many models of the dredger engine are made along these lines.
…but the rescued Trevithick engine in the London Science Museum is different..
….and this is the drawing of the dredger engine from the Rees Cyclopaedia of 1819..
The Rees drawing was made at a time when many Trevithick engines were operating, and it is likely that the drawing is representing an actual engine. So that is what I have based my scale engine supports on.
Then the bearing housings were made, and the main bearing bushes. Straight forward machining. Inserted the mainshaft (12mm silver steel).
The flywheel had been previously water jetted from 6mm steel plate.
Then made the crankwebs.
Next are the wooden connecting rods, and the driving spur gear.
Still thinking about the stand. Wooden box? open metal structure similar to my beam engine? masonary block? Wait and see.
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