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Ski geometry is the shape of the ski. Described in the direction of travel, the front of the ski, typically pointed or rounded, is the tip, the middle is the waist and the rear is the tail. Skis have four aspects that define their basic performance: length, width, sidecut and camber. Skis also differ in more minor ways to address certain niche ...
Around 1850, artisans in Telemark, Norway, invented the cambered ski. This ski arches up in the middle, under the binding, which distributes the skier's weight more evenly across the length of the ski. Earlier plank-style skis had to be thick enough not to bow downward and sink in the snow under the skier's weight.
Ski jumpers below the minimum safe body mass index are penalised with a shorter maximum ski length, reducing the aerodynamic lift they can achieve. These rules have been credited with stopping the most severe cases of underweight athletes, but some competitors still lose weight to maximise the distance they can achieve. [11]
Slovenia's Andrej Šporn at the 2010 Winter Olympics downhill in a typical downhill body position. Downhill is a form of alpine skiing competition. Whereas the other alpine skiing events (slalom, giant slalom, super giant slalom, and combined) emphasize turning and technique, downhill emphasizes "the six components of technique, courage, speed, risk, physical condition and judgement ...
World Cup skiers commonly skied on slalom skis at a length of 203–207 centimetres (79.9–81.5 in) in the 1980s and 1990s but by the 2002 Olympic Winter Games in Salt Lake City, the majority of competitors were using skis measuring 160 cm (63.0 in) or less.
The special skis used must be 240 cm (7 ft 10 + 1 ⁄ 2 in) in length and at most 10 cm (3.9 in) wide, with a maximum weight of 15 kg (33 lb) for the pair. Ski boots are attached to the skis by bindings. The ski poles are bent to shape around the body, with a minimum length of 1 meter (39.4 inches). [6]