Hi Aaron,
It was our ‘discussion’ on this Forum and your overlayed images the other day that helped me add some more pieces to the puzzle. I really appreciated and enjoyed that.
The keyless works are quite complicated (and rather more hidden than the going train on the front) and I wasn’t sure about calling this an “intermediate wheel”, but I suppose it has that function.
I will post the reverse of the movement shortly.
Cheers
Andrew