Rotary Theory Text Books
 

Can anyone suggest an author or brand?

Only need the books to cover the rotary aspect of the CPL (A)

I speak from experience as a CPL(H).

Renown Aussie instructors tend to write their own theory books, like Ron Newman's Helicopters Will Take You Anywhere or Mike Becker's Helicopter Handbook. International authors go into a little more detail, like Shawn Coyle's Cyclic and Collective or Ray Prouty's Helicopter Aerodynamics. They're all good.

Principles of Helicopter Flight -W.G. Wagtendonk

Rotory aspect of CPL (A) ?

I have CPL (A) and need only the rotary subjects to convert.

Cheers...

Is there no equivalent to say Bobby Tait?

Wagtendonk is quite good on the theory side if not a trifle dry. The others tend to put more flesh on the bones.

No equivalent of Tait except the Ozzies I mentioned.

Just to add ... Wagtendonk is a Kiwi. I believe he was once Mike Becker's instructor / mentor (Mike is of course another Kiwi).