Originally Posted by Ghost
Visualize a pole vaulter. Now, visualize a rear wheel drive car driving down the road and having the front differential fall off and the drive shaft jamming on an a pothole or other suitably solid obstacle and the car's rear end vaulting up. What those two things have in common is vaulting.
I'm good with this now. I've re-calibrated for the use of this term with regards to skiing.
Without shortening the distance between your hips and your feet, you cannot cross over from one side of your skis to the other without vaulting. Flexing allows you to cross above your skis without vaulting. You can flex enough to not vault, flex more and do a cross under, or flex less or even extend and do a cross over. Flexing old outside leg and extending old inside leg during transition is possible. Whether it's vaulting or not, and to what degree it is vaulting, depends on whether the net effect is a reduction or increase in your elevation with respect to your skis..
When I wrote what I did in the VB thread, I already believed everything you stated about the cross under/over to be true.
In the VB thread I wrote:
So the third type of virtual bump I'm referring to happens only during cross under turns so the real bump it would be compared to goes parallel to the fall line. Picture someone skiing a ridge and constantly skiing from one side of the ridge to the other staying towards the top of the ridge. They are skiing back and forth across a very long. When you are doing cross under turns all the way down the trail, in addition to the virtual bump effect you feel in the turns you make you will feel a third bump because you are constantly extending, flexing and extending your legs from side to side "under" you. If your head doesn't rise up any higher than when you are at the apex of the turn while doing this, your lower body feels everything it would when skiing the ridge line.
and your reply was:
You have described Vaulting perfectly. Your body will go up and over, if you go from inclined left to inclined right without flexing. This may be like a bump, but it is not what we are talking about when we talk about the virtual bump.
I'm so misunderstood
So I'll chalk you and the rest of the folks thinking I was talking about Vaulting when I was describing a cross under turn, to me staying up to late at night and not being clear.
What I was trying to point out in that thread and I will here is that if you do a perfect short radius cross under turn, the chance of there being any vaulting is pretty slim (provided it us done within what you wrote about it and I added ). I think there might still be some fore/aft vaulting but not any significant lateral vaulting. Does that sound correct?
Here's my new test to point out where I think there is another VB:
Sit in a chair like a proper young lady would that is wearing a skirt. Your upper body is upright, shoulder square to the front and your are probably leaning to the front slightly. Your legs are together, flexed at the knee and your feet are on the floor on the left side. Your knees are probably a little lower than your hips. Your feet are pointing to the same direction you are looking. You might have to scoot to the front of the chair to do this, especially if the skirt I know you put on for this, is a little too short.
Now, while sitting up right and facing forward, keeping your feet on the floor, slide them to the right side of the chair directly under your knees. You will notice that your knees came up a bit during this transition from left to right. You might have to watch them to see it. Small virtual bump.
If you happen to be in s swivel chair, do it again but leave your feel on the left side and spin the chair to the right while your feet slide. No bump.
Do the same thing but this time, instead of sliding your feet, just move your knees from side to side - Vaulting.
Please tell me that even if what I described isn't the way it is termed in skiing, that I'm correct in what I'm seeing.
Thank you and good night,