Crampons: Everything You Need to Know

  • Tue 22 Oct 2024
    • Travel tips

Crampons and ice axes are essential gear for any exploration in winter mountain landscapes. Crampons are metal spikes that attach to your boots, enabling safe movement on icy surfaces. Without them, progressing on frozen ground would be extremely difficult. There are various types of crampons, designed according to the activity you plan to engage in. But let’s start with the basics!

What’s their history?

The concept of crampons is not new. Around 3,000 years ago, Celtic miners used metal spikes on their shoes to prevent slipping, while similar techniques appeared in the Caucasus region during the same period to ease movement on snow. A depiction of an ancient crampon can even be seen on the Arch of Constantine in Rome. By the 16th century, hunters in Europe equipped themselves with claw-like devices to move more easily in difficult conditions.

The modern crampon began to take shape in the early 20th century, with British climber and mountaineer Oscar Johannes Ludwig Eckenstein being credited as the creator of the first modern crampon. The first commercial model with 10 points was manufactured by Grivel in 1910, and by the 1920s, it had replaced previous designs.

In 1938, during the ascent of the Eiger’s west face, German climbers Anderl Heckmair and Ludwig Vörg introduced 12-point crampons, which outperformed the 10-point ones used by Austrian climbers. In 1967, Yvon Chouinard and Tom Frost developed rigid crampons, and by 1980, models with a single front point were introduced, improving boot placement in ice climbing.

Anatomy of a Crampon

Though there are different types of crampons, their basic components remain largely the same.

Binding

The binding is one of the most critical features to consider before purchasing crampons. Not all crampons are compatible with every type of boot, as their attachment method varies. There are three main types of bindings:

  1. Strap-on Bindings: This simple type of crampon can be worn on almost any boot, even flexible hiking boots. They are secured with straps and are ideal for hikes on snow and gentle slopes. Their downside is the time-consuming binding process and reduced boot stability inside the crampon.
  2. Semi-Automatic Bindings: These crampons are the most popular for mountaineering. They feature an adjustable front bail and a heel mechanism that requires a notch on the boot’s back for secure attachment. They are easy to use, fit various boots, and can be worn comfortably with gloves. However, they require boots with a specific heel notch.
  3. Automatic Bindings: This type of crampon requires notches on both the front and back of the boot. The front is secured with a wire bail, while the strap locks the crampon in place. It's the fastest and easiest binding system, even when wearing gloves.

Points (Spikes)

The points are the essential part of crampons, maintaining contact with the ice. They are positioned on the surfaces that touch the ice, i.e., under the boots. They are usually made of steel or stainless steel. The number of points varies depending on their use:

  • Hiking Crampons: These have 10 points, with the front two being horizontal and low-profile, suitable for simple hikes on icy snow without technical challenges.
  • Mountaineering Crampons: They feature 12 points, with the front two protruding more, ideal for mountaineering where technical passages may be required.
  • Climbing Crampons: Equipped with 14 points, with the front ones longer and vertical, perfect for ice climbing.

The points can be arranged either horizontally or vertically, depending on the crampon’s type and purpose. There are also models with a single front point, offering greater precision for foot placement, ideal for mixed routes.

Frame

The frame of the crampon can be flexible, semi-rigid, or rigid, depending on the central bar:

  • Flexible Frame: Ideal for those walking on gentle slopes or hiking on icy snow with flexible boots.
  • Semi-Rigid Frame: The most popular option today, offering a good balance of flexibility and stability in various conditions, suitable for users facing diverse challenges.
  • Rigid Frame: Provides extra support and stability during ice climbing but makes walking difficult due to the lack of flexibility. In flexible boots, it can cause the boot to pop out of the crampon.

The central bar typically has an adjustable mechanism, like a clip or pin, to adapt to your boot size.

Anti-Balling System

The Anti-Balling system is designed to prevent snow build-up underneath the crampon. Snow accumulation can reduce ground contact and lead to loss of balance. This feature is now common in almost all crampon models.

Materials

Crampon frames can be made from various materials:

  • Steel: Resistant to impacts from rocks and ice, ideal for technical mountaineering, though heavy.
  • Stainless Steel: Offers the advantages of steel with added corrosion resistance.
  • Aluminum: Lightweight but less durable against wear and tear.

Crampon Classification

Choosing the right crampons is easier when categorized by use and the type of boot they attach to:

  • C1: Flexible crampons for walking on snow and ice, suitable for all boots.
  • C2: Semi-rigid crampons for walking on ice and mixed climbing, compatible with rigid and semi-rigid boots.
  • C3: Rigid crampons for steep ice and challenging mixed climbing, only for rigid boots.

Moving with crampons requires practice and attention to avoid mistakes. Prepare properly to fully enjoy the unique experiences the winter landscape has to offer!

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