Well let me ask you this Rich. If the edge is skidding equally along the entire length of the ski, will it be making a turn or a drift?
If the tail fans out a bit like RLM's montage photo Zenny shared, in which it does between frames 4 and 5, then he maintains an oversteering situation from there on out. During the oversteer phase, the tails are taking a longer path of circumference to the turn shape, then the tips. Therefore, just to maintain the steering angle he does from frames 5-11, the tails have to be skidding more then the tips. If they were to skid the same amount the skier would drift out of the turn.
Originally Posted by zentune
It brings up another interesting question. If its true that the tails have to skid more then the tips in order to maintain a certain steering angle, then what happens if the edges start to skid the same amount along the entire length?
What happens if the tails start to skid too much, will the steering angle be maintained or will washout occur?
seems to me that getting just the right amount of skidding from the tail is a crucial element to this type of technique. Too much skidding in the tail will be washout. Too much skidding in the tips will be drift out, which is kind of its own kind of washout in a different way. Fundamentally, if the ski is brushing...skidding...and maintaining a steering angle without washout...then the tail has to be skidding more then the tip...even if the brushing is very slight and the difference very small...this would be the case. If they were to skid the same amount front and back, the ski would drift out of the turn.
Interestingly, RLM's example is oversteering the end of the turn, not the beginning of the turn as some suggested earlier.
I think we can assume his demonstrator was trying as hard as he could to focus on leaning forward to achieve this(which is visible), but personally I think my eyes see some development of counter between frames 4-5 also, which means the femurs turned. Whether that was active or passive, is impossible for us to know other than taking RLM's word that the demonstrator was presumably trying to do it the way RLM described in his book.
A few other noteworthy observations, note how flat the skis are throughout, but particularly prior to the big fan out at frame 5. Once the skis fan out in over steering, this demonstrator gets on the edges more to keep it under control.
Oversteering is nothing more than letting the tails fan out a bit through some means, but done in a controllable way so that the tails don't completely wash out. its a completely viable and useful technique for getting some speed control while also continuing to make a round turn shape.
My own experience at higher performance levels with higher edge angles, is that stuff like this leads to chattering, especially at the end of turns on steeper and harder slopes. So this will come as no surprise to some that I will say that high-C brushing is really a more ideal place to get some speed control with the smallest brushed steering angle possible, rather then fanning the tails out in low-C as RLM's demonstrator does here. In that respect I completely agree with Rich's last post.
Edited by borntoski683 - 8/20/15 at 10:31am