Sadly, I think I have found a controversial subject in RC.
Looks like some folk are measuring the size of their ****'s on this one. It is an interesting discussion on physics though.
I dont know about "gyroscopic PREcession" or whatever, but I do know that it looks really cool when I get my plane to tumble end over end on a horizontal line, call it whatever you want.. I THOUGHT is was called Lomcevak, apparently I was wrong.

I guess its a brand new maneuver and I will give it my own name, cause when I do it people watching go NUTS and want to know what the heck that COOL looking maneuver is called. I'll let you know when I come up with a name, I will also try to come up with a video.