Do you remember this picture? It was a little tricky designing the dimensions for the steering, without having the rudders in place. There is basically no straight surfaces anywhere to measure from… However, it seems that we were reasonably successful. Some angles are not 100% optimal, but this will not be noticeable in real life.
Somehow in this picture everything looks kind of small. I can say with confidence that it is not. Quite on the contrary. It feels totally oversized. The diameter of the solid rudder shaft is 115mm.