The Duchess Saga 2020   Leave a comment

A year of lockdown and enumerable hours of fettling to get the valve motion built and I slowly seem to be getting somewhere.

New piston rings from ptfe.

Various bits of valve motion being machined.

What happens when your mill stem clamping bolt shears its threads.

But surprisingly the part was saved.

Set up in front dead centre the reversing link is held in a vertical position so that when the reverser is moved it imparts no movement to the valve.

Once is checked for the same in rear dead centre the length of the eccentric rod can be identified.

Posted 12/03/2021 by keithspenceuk in Model Railway Club

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