Thanks guy so much for the help! This is what is so nice about rcuniverse. You share knowledge with others and you learn.

Yes! You are right! I was wrong in stating "inside rolling loop", because when a plane rolls it becomes both inside and outside during each roll. Actually what I was trying to describe is a rolling loop that starts by "dropping" the plane towards the ground while it is rolling, then recovering it just above ground level. I am not sure if this is a standard 3D formation or an ad-hoc one.

The following video clip is what triggered my curiousity and at exactly 3 minutes and 10 second of this video is the part I am talking about.

http://www.qqaircraft.com/default.as...s_page=zakwest


Thanks again!