Al Denelsbeck wrote:
I, personally, would like to see a closeup of the swash plate and
links assembly, to see how they manage to get past the lower head to
articulate the upper. Everything I've thought of so far leaves out some
aspect of either collective, cyclic, or precession.

This makes it all so clear...
http://www.b-domke.de/AviationImages...head/1363.html