Tips for the next loco

These are basically my own "aid-memoires" and probably will mean little to others. The list will grow as I think of them
  1. Eccentric rod measurement
  2. Inlet and outlet manifolds
  3. Drilling 90° Clack valves in brass
  4. Clack dimensions
  5. Making valves for steam and water control - these dimensions are off the top of my head but seem to work OK. added on 07/08/2008