Ski camber vs rocker under load

Camber is the gentle upward arch under the middle of a ski, so the tip and tail touch the snow first. Rocker is the opposite: the tip and tail lift away. Most skis today mix the two. Slide across four archetypes from a full-camber carver to a full-rocker powder ski and watch where the pressure goes.

The pressure strip under each ski shows the answer, here for a 92 kg skier. On the carver, about 58% of the ski’s length is carrying real pressure, and the peak is about 19 N/cm. Move to the all-mountain ski and the contact falls to about 47%, then about 41% for the freeride ski, and about 33% for the powder ski. The peak climbs as the contact shrinks, to nearly 27 N/cm on the powder ski. Same weight, shorter stretch, more pressure on it.

The share of load underfoot tells the same story: about 76% on the carver and about 96% on the powder ski. A cambered ski keeps its tip and tail working, so you have edge along most of its length. A rockered ski puts almost everything under your boots and lets the tip and tail ride up.

What that means depends on the snow. On hard groomed snow you want edge to hold, so more contact is good, and that is the carver’s home. In soft snow, the snow gives under the ski, and a short loaded patch with lifted ends floats instead of diving. That is what rocker is for.

This page uses archetype skis, not a particular model, and one skier on groomed snow. Real skis mix profiles, have different flex along their length and different tip and tail shapes. “Length carrying pressure” counts the stretch above 5% of the peak, which is our choice of line, not an industry standard. Use it to compare shapes, not to compare brands.

Rule of thumb from the picture: the more rocker, the less of the ski you are using on firm snow, and the more of your weight sits on the middle of it. If a rockered ski feels loose on ice, this is part of why.