I was awake early this morning so construction on the bogies got under way.
I suppose I should say that I can't claim the originality of the design.
Here's a few pictures of the construction which may explain the way axles are equalised:
This shows the staples fitted into the top layer. The staples transfer the weight to the axles.
The pair of staples will keep the carriage level. The single staple will allow the axle to rock.
This layer is approximately the same thickness as the staples and does little but put the next layer in the right place.
This is the third layer and the most critical as it locates the axles horizontally.
The gaps must provide a sliding fit for axles allowing them to rock without allowing them to slop about.
This layer is thicker than the axle diameter.
This shows the construction of mechanism that prevents the wheelsets dropping out.
The wheels in place.
Just the tilting/swivelling mechanism to construct now.