Originally Posted by rossymcg
what exactly is duel radius?
A statistic that describes the skis shape is the side cut radius. It is the radius of a circlle of best fit that fits the edge of the ski (not exactly, but closer than any other circle) when the ski is flat on the snow and the circle is a circle you could draw on the snow. Skis with fatter tips than tails are not new, but in an effort to satisfy the needs of people who want to make tight turns and higher speed wider turns, some companies have taken to making skis with a more pronounced difference between tip and tail, and fitting one circle to the front half of the ski and another to the rear, with the front curve having a much tighter radius, and marketing this type of ski as a "dual radius" ski.
If you already know how to carve railroad tracks, you can easily do so with these skis; all it takes is a little bit of control over pressure and fore-aft weight distribution.
If you don't have the skills already, they will want to scrub a little speed off with the tips when on hard packed snow, and that's what they will do unless you command them to do otherwise (solution is to keep the front of the ski firmly pressed into the snow, assuming you already know to tip the skis and not try to turn them).