1953 Woodson Marine Steam Engine Project

Crank Shaft Sub Assembly

The crank shaft is made in pieces and pressed together. A 0.002" interference fit is called for.
The flywheel isn't needed to run the engine, but it sure smoothes things out.
The eccentrics are made from two pieces and held together with a screw. A second screw binds them on the shaft.
Crank Assembly Drawing Crank Parts Drawing Eccentrics Drawing SolidWorks 2000 Models

Changes: When making the eccentrics I felt the screw that holds the
eccentric and cover were too close to the working diameter so I moved it in a bit.
Center to center was .313", now it is .280".

Bottom with crank fitted - Completed June 22, 2008

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Sub Assemblies
Bottom End
Eccentric Strap
Connecting Rod
Crosshead Guides
53 Revised
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