Ed Bertschys Model Paper Steam Engine
Section 4 - Eccentric, Governor Power Wheel & Crank  Click on the images for a larger Picture (Opens in a new window)
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All the parts for the Eccentric. Note the wheel side parts I have added another 'ring' for more strength. Also collars for a better fit to the crank and Valve con rod.
Assembled Eccentric wheel, runs as smooth as the real thing ! As the centre mounting hole is offset the whole wheel assembly rises and falls with the rotation of the Crankshaft. This movement is what operates the Valves via the valve con rod.