Learn to fly advanced 3D
Rolling rainbows are a fairly advanced 3D manoeuvre for RC helicopters, and rather difficult to learn due to the problem of falling out of the sky when at knife-edge.
In this guide we take you some flight simulator exercises as well as some you can do at the field. We show you haw to start with a flat semicircle, and then start raising it up, until you can do it vertically.
