Hi Guys we have been through all this before! a search on the forum will find all the answers.
My tuppence worth: It is definately not gyroscopic precession,
Crab@saavn- The way I understood it was -Flapback is due to a speed change, whereas flapping to equality is a cyclic pitch change, surely not the same thing. Inflow roll is the difference in lift due to difference in induced flow not flapping to equality
Confused ? I usually am