Ski binding

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In skiing, a ski binding is an attachment which anchors the ski boot to the ski. There are different types of bindings for different types of skiing:

Contents

1 Bindings by type of skiing

1.1 Alpine
1.2 Cross Country
1.3 Telemark
1.4 Alpine ski touring
1.5 Skiboard and Snowblade Non-release binding

2 History
3 See also

Bindings by type of skiing

Alpine

Bindings for Alpine skiing usually work by fixing the ski boot to the ski at the toe and heel. A binding acts to attach the boots to the ski but also to release the boot in case of a fall. To help prevent injury the boot is released by the binding if a certain amount of pressure is applied (usually created by the weight of a falling skier). The amount of pressure required to release the boot is typically adjusted by turning a screw on the toe and heel piece. This is called the DIN setting. The correct setting is based on height, weight, and level of the skier and is usually set by a technician when skis are rented or bought.

See also: [History of release bindings]

Cross Country

The NNN (New Nordic Norm), where a bar in the toe of the shoe is hooked into a catch in the binding. Also exists in the more rugged BC (Back Country) variant. Two small ridges run along the binding, corresponding with slits in the boot. It should be noted that there have been several versions of NNN as Rottefella have evolved the binding, and the first NNN version is not compatible with later (current) designs.

SNS (Salomon Nordic System; marketed by [Salomon]) looks very similar to NNN binding, except it has one large ridge and the bar is narrower. Three variants exist: Profil, the standard model; Pilot, specifically for skate-style cross-country skiing, and the "X-Adventure" variant for backcountry skiing. While Pilot skate boots can be used with a normal Profil binding, Profil boots cannot be used with Pilot skate setups. Because of its ease of use it is quite common, though in some places NNN equipment (broadly comparable in terms of cost and performance) is easier to come by and hence used more. Previous SNS systems exist with a loop protruding from the frot of the boot rather than a bar flush with the front, and these are obsolete and no longer available.

75 mm (Rottefella, Nordic Norm, 3-pin) This is the original, classic system found on cross country skis, invented by Bror With. These bindings, once the standard, are no longer as popular as they were but still hold a significant share of the market for mid-weight touring setups with relatively heavy boots, as typically used for hut-to-hut touring in Norway. In this system the binding has three small pins that stick up. The toe of the boot and has three holes that line up with the pins. The boot is then clamped down by a bail. Despite the decreasing use of the 3 pin "rat trap" binding in lighter cross country, the characteristic "duckbill" toe it uses is still assumed in the design of heavier cable bindings, and 75 mm boots are still widely available, especially for telemark technique and more rugged touring. A similar system with a 50 mm "duckbill" once existed for lighter setups, but is obsolete and no longer available.

Telemark

The cable binding (aka Kandahar binding), where the toe section of the boot is anchored, and an adjustable cable around the heel (for which there is a groove in the heel of the shoe) secures the boot. Used for cross-country (to a certain extent), Telemark and ski jumping.

Alpine ski touring

Alpine ski touring boot, binding and couteau

Unless telemark skis are being used, for Alpine ski touring, a special ski binding is used that allows the heel to be clipped down to the ski when skiing downhill, but which allows it to be released when climbing.

Skiboard and Snowblade Non-release binding

Traditionally, skiboards and Salomon's Snowblade have used non-release plate bindings. The reason being that skiboards and snowblades have traditionally been 100 cm in length or less, so the torque during a fall was assumed to be small enough that a releasable binding was not necessary. However, in recent years, as skiboarding has become a more established niche sport, releasable bindings have become a viable option to decrease the chances of injury. [Spruce Ski] created a riser which adapts between the standard 4 cm by 4 cm four-hole skiboard binding and standard ski bindings; furthermore, Spruce began selling their 120cm skiboard in the 2005-06 season which are only available with their releasable setup. Additionally, Salomon now offers most of their Snowblades with releasable ski bindings as well. Many riders still prefer the plate-style bindings, and SnowJam and Bomber both make high quality plate bindings.

History

Modern ski bindings are based on the Fennoscandian model of the 19th century. The bindings of Telemark ski and cross-country skis were developed from the Ugro-Lapp type. See History of skiing.