Hi
The boiler has been soldered again and is back in the pickle, tomorrow if time permits another hydraulic test
Meanwhile 5 eccentrics are needed. One for the axle pump and 4 for the valve gear. Straight forward turning job which I'm sure needs no detailed explanation. They do need to be quite accurate so I used a micrometer instead of my trusty digital calipres. Also it is apparently a bit awkward to set the eccentrics as the grub screw is in the centre which requires the eccentric strap to be removed to loosen/tighten/adjust the eccentric. The 2 inner eccentrics I have made double the width so that the grub screw is on the outside, the outer eccentrics are too close to the frames to have the extra width
All 5 eccentrics have the same offset, 1/4" so I have made a little jig. A piece of thick MDF bolted down to the table with both X and Y locked
Remove most of the waste with a Forstner bit
Finish off with a boring head
Until the eccentric is a snug fit
Clamp the eccentric in position
Move the table back exactly .25" and lock in position. Then drill and ream 5/8"
Repeat the process for all 5 eccentrics
Cheers
Rich