vorticey,
"how can you say there's no head plane?
It's easy to say.
Just tell a white lie.
Seriously, I only said that
"I can't recall ever seeing a reference to 'rotor head plane'. ". Perhaps it is another way of referring to the mast plane ~ shaft plane ~ hub plane.
This page should give some answers on Hookes joint effect. If you disagree with the information, please say so.
What do you mean by 'hunting'?
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rwm
Small point but, the elastomeric bearing on the Rotorway is on the teetering hinge.
"You talk about intermeshing blades, and i don't seem to see many of them out there, could it be because they are too complex. You want simple and light for inexperienced pilots in an ultralight helicopter,
"
We all have our favorite subjects and you found mine.
The intermeshing configuration offers much for the ultralight helicopter and low time pilot. A few reasons are; the high thrust to weight ratio, the benign yaw control, plus fewer components in the drive train and rotors. (the single rotor helicopter ain't really a single rotor).
More:
Intermeshing Configuration - Concerns