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bu11power

长周末，纯属探讨贴。

我总结了一下你的帖子，你总强调你是让雪板自己TURN，所以啥A/I都没用。

我觉得的，这个有点本末倒置（就是把原因和结果想反了，没有攻击你的意思）。
雪板自个儿搁雪上，不会转， 你一推， 它保准直线冲坡到坡底。

所谓自己TURN，是因为CARVING雪板EDGE的形状，
所以，你必须用EDGE，必须施加PRESSURE。
那怎么用EDGE，怎么施加PRESSURE呢，就必须靠A/I。

所以如果你A/I不够，就没有用到或没有用足EDGE和PRESSURE，
所以就不是雪板自己TURN。

而且如果雪板自己TURN了，滑行的轨迹应该是漂亮的完整圆弧，而不是紧贴着FALL LINE 瘦“S”。
就像以前BRADY说过，雪板穿过FALL LINE的一瞬间，如果能有45度角，就相当不错了。

所以论坛里很多人看了你的录像说你在冲坡，而你不这么认为，总强调你是在让雪板自己TURN。

你用这个标准再去比较四月， LULU，土豆，和你的录像，就能看出差别。

不知道我说的对不对，希望大家来指正，多谢。

b-p

lulu 发表于 2011-4-23 08:27
你就说你穿了什么J去的吧，要是黑衣黑裤丝袜罩头，干坏事的；要是吊带短裙丝袜罩腿，那就是找坏去了 ...

昨夜天寒，袜子都漏洞了，所以俺是穿着军大衣去的

bu11power

lulu  妞妞你是数学差呢，还是语文差呢  发表于 17 分钟前
回答： 我数学语文一样好！

先把错别字儿拎清再叫。
较真儿，人干的事；叫枝儿，那是鸟干的事儿
回答： 就一个字 酸溜溜

jluo

when most of us ski srt, pressure applied to ski would be minimum at fall line, and is greatly reduced compare to that of when the skis are aligned(parallel) with the fall line, thus the ski turn itself does not occur, and the skier adjust the body balance and shift cg and blahblah, you know, all that whole 9 yards we do, and still thinking oh it is so great that my skis are turning without me doing nothing, ya right.

So to summarize, even pressure throughout the turn, the skis will turn itself ==> what is even pressure, and how to apply it, that I don't have time today.

jluo

so how does the skis turn itself? as the feet are pushed back by the ground, an angular motion thus momentum is carried to return the feet to the natural orientation. This momentum is not cancelled at the mid point, and the feet twist continue to travel to point to the other direction relative to the initial point. The twist of feet combined with the extension and compression of the legs, both caused by the differential pressure, results the so call skis-turn-itself.

lulu

Brady 发表于 2011-4-23 03:26
大家都消停了，我还没睡呢。 又仔细的看了录像，读了帖子。 我刚发现， Bingster新贴的录像不是大回转哪， ...

通篇看见俩意思，第一，我没发言权；第二，我来说两句。你这不是蓄意添乱么

lulu

bullpower 发表于 2011-4-23 00:34
几亩瓜  老牛,你就别叫枝了  发表于 半小时前

枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝枝 ...

先把错别字儿拎清再叫。
较真儿，人干的事；叫枝儿，那是鸟干的事儿

jluo

I just want to express my view on the turning motion during short radius turns (srt)

The ski-turning-itself motion is a combination of pressure applied by skier to ground and the pressure from ground to skier. Note when I say pressure, it also means force, also vice versa. As the turn completes (ski moving from the far side of the body to under/in front of the body), the direction of force from ground to skier becomes longitudinal from lateral, w.r.t the skier. when a high pressure is applied evenly throughout the turn, which I believe we should do in srt, combing the body weight in motion at speed, and the force, pressure at foot greatly exceeds that is applied by the legs. In term, the leg are pushed back naturally, and the feet would return to its natural position (straight), and the pressure from ground would reduce to a point that is smaller than the leg application, allowing the leg to push back on the ground to extend outward again.

lulu

b-p 发表于 2011-4-23 00:33
就在楼下操场上黑了咕咚的跑圈，坏事没干，倒是担心被坏事。

你就说你穿了什么J去的吧，要是黑衣黑裤丝袜罩头，干坏事的；要是吊带短裙丝袜罩腿，那就是找坏去了

bu11power

kick 发表于 2011-4-22 22:58
男粉丝、女粉丝？女的，赶紧去入我的粉丝团，我定期跟大家有见面会。男地，你就别整事儿了，赶紧去忙事业 ...

就一个字：瑟迷迷