Some progress to report on the Duchess test build.
The original design that Geoff did for the cylinders was the same as the 7mm scale Finney kit. That uses cast slide bars soldered to the rear edge of the cylinder frame. In 4mm scale that wasn’t going to work so David has redesigned this area to use a layered etch that goes through the rear face and solders to the front. This will be much stronger.
The cylinders viewed from above with the wrappers in place. Just behind the cylinders are the Valve rocking arms which as they need to be removable are held in place with a small screw.
Theres a lot of piping on the footplate of a Duchess! 
The footplate is pretty much complete now.
Made a start on the valve gear
Progress so far.
