For what it's worth, I fully agree that inertia plays an important role*. It isn't the only factor though, as I pointed out above. The solo spinning demonstration illustrates the principle nicely, but he is using both arms fully extended and a leg to do it. The effect that change has on a real follower with only one arm being taken through a significantly lesser movement is nowhere near that dramatic. It's still an important factor, but not the be-all-and-end-all.FoxyFunkster wrote:Actually none of the answers regarding 'prep' or rotation are correct, The only way to control speed and amount of rotation in any turn is through control of the followers 'Angular momentum' It is simple physics....If you close a followers body whilst in rotation then she will speed up, if you open her body then she will turn at a slower rate
Pulsing certainly does not control this. There are occasions when a follower has a default taught response to this action, But it is not a natural response
Leading acceleration through the body could mean a number of things and has no bearing on the control of rotation
Degrees of prep or when to prep the lady again has no relevance of how fast she will turn or how many times she will turn, You are preparing her for rotation is all you are doing, how many, how fast and how much come as i said with control of her momentum, how much you close her body or not!
No explanation is given on how she obtains that angular momentum in the first place. We know the turn is driven from the connection at her shoulder blade, but no mention is made of that either here or in your earlier post. If bringing the hand in to a tight halo on the turn initiates a double turn, and that was all that is required to control the speed of the turn, then does that mean bringing it closer still will automatically produce more turns? Is there therefore an upper limit of allowed turns that you only reach if you stick her hand directly to her forehead?
If you want her to add more turns you don't just bring her hand in - you also add a little more power to the turn as she passes you around 5. That has just as much impact on your control of her angular momentum in this case. For that matter, you can vary the number of turns you can lead her through without holding onto her hand at all by altering the amount of angular momentum you give her though that lead as well.
If you wanted to travel all the way across the room with her spinning like that do you magically reduce the coefficient of friction between her and the floor and remove all the air in a bubble around her instead of pulsing?
I think what you're seeing here is a case of teaching a principle. One principle. One. Very. Useful. Principle. One principle without muddying the waters too much. That's a much better method of teaching than dumping everything at once, but sometimes it doesn't stack up if you look closely enough at what is going on.
On a side note, I have a great respect for the approach Robert Royston takes to teaching. His tools-based philosophy is extremely succinct, and almost forces them to apply it to their own dancing in general rather than just on particular patterns from the workshop which they will likely soon forget.
*His explanation at the start is a bit garbled, but he gets his point across well enough.