I made some progress with the wheels. The tandem axles are done and I have been working on the other wheels. These are the three axles with single tires and one of the three axles is driven. For these I used brass, because it is so easy to solder and machine. I will focus on the driven axle next. It is very similar to the rear axles.
The picture shows all the front wheel parts in various stages of assembly. The bearings are 14 x 8 x 4. I got a whole lot of them for very little money:
The tandem axles with walking beam suspension:
Here is the frame, made of AL:
Kerst