To:Kyrilian
If the blades were purely loaded by centrifugal force the blades would be disposed 90-degrees to each other. The inertia of the blade due to its being rotated about the lag hinge will cause the blades to drag behind the radial position so that they are no longer disposed at 90-degrees to each other. All leading and lagging takes place about this blade position.
To: Robbo Jock
When I addressed spanwise bending I was not addressing torsional bending. Torsional bending takes place but it reacts about the pitch change axis. What I was addressing as spanwise bending which can be demonstrated by locking the blade about its’ drag hinge and applying a force to the trailing edge of the blade. The same would be true if you did the forcing on the trailing edge of a two-blade rotor system with the rotor brake turned on.
------------------
The Cat