Great post HDW and thanx for the other replies.
So my conclussion thus far is
Chinook controls yaw by tilting both rotors in opposite directions.
Kamov controls Yaw by increasing pitch on one rotor while decreasing on the other. The Kamov must suffer the same Yaw ( or lack of ) problem in auto as the Kmax. So some yaw control in auto with forward airspeed must be from the vertical fin's. Is there any other way this is acheived???
Kmax controls Yaw by both changing pitch on the blades and by tilting the disk. ( Is pitch/roll a secondary effect of pedal then? or is that why the disks are tilted??? ).
For the Kmax to be able yaw in the auto there is no torque reaction. So the yaw is controlled by tilting the disk only, however this is the reverse of the tilt in powered flight so a reverser changes the direction of the imputs ( man that must have been hard to design ).
Please feel free to add anymore???
Crispy