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Description

Faster than a speeding bullet, lighter than a steam train.

There's a conundrum that comes with building skis for long, fast trips in serious, high-consequence terrain―how do you design a board that's light enough for serious approaches and fast ascents, but stiff and strong enough to handle sketchy conditions in serious no-fall zones? The Cho Oyu Ski is Dynafit's magic bullet, built with an ultra-light paulownia wood core that's reinforced with a torsionally stiff carbon speed stringer and Quadrax biaxial laminate, creating a ski that's the lightest of Dynafit's non-speed touring models, but with many of the terrain-munching features found it its freeride models. The triple-radius construction, for example, has a fairly wide tip, proportionally narrow shape under the binding, and a pintail that's significantly narrower than the tip, providing superior underfoot grip on icy snow and, along with the tail rocker, an easily-adjustable turn shape that can suit any terrain. The pintail shape also lets you dump speed in an emergency and makes it easy to slip the Cho Oyu into pack ski-carry systems, while the Scoop Rocker tip handles variable snow with ease and allows smooth, easy turn initiation.

With a surprisingly wide shovel, the Cho Oyu doesn't immediately look like a speedy super-light ski, but Dynafit's got some tricks up its sleeve. The Flex Tip, as they call it, tapers to a very narrow point and is made nearly entirely of lightweight carbon, which reduces weight and dampens vibration, so you don't get thrown off balance in dangerous situations. Micro sidewalls use less material than traditional constructions and extend deeper into the core of the ski, making them torsionally stiffer and more resistant to impact than standard sidewalls. When you're ready to open it up and enjoy making some powder turns, the sintered graphite base will keep you flying, letting you really love any surprise alpine pow.

  • Paulownia wood core with carbon speed stringer and Quadrax biaxial laminate
  • Scoop rocker tip
  • Pintail with tail rocker
  • Lightweight, stable carbon Flex Tip
  • Triple Radius profile for easy, stable turning
  • Super-light and tough Micro Sidewall construction
  • Speedskin tip and tail skin notches are instantly compatible with Dynafit skins
  • Sintered graphite base

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Review Summary
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Here's what others have to say...

5 5

The Cho!

  • Familiarity: I've put it through the wringer

Here is a starter for some numbers and a comparison:
All are one skis weight with a Dynafit Low Tech Race, with steel springs (not Ti, +10g) mounted

167 x 74mm Broad Peak 1320g
171 x 80mm Nanga Parbat 1170g
182 x 89mm Cho Oyu 1340g
182 x 106mm Grand Teton 1800g

As a reference...460g is a full 16oz. between 182 GT and Cho. So if you like to tour and can deal with a rockered 5 point 89mm ski to replace a 106mm basic trad built ski these days, that is a savings of 2# off your feet.

I've written a couple of things previous on the Cho here:
http://coldthistle.blogspot.com/2013/12/it-is-back-in-my-quiver-dynafit-cho-oyu.html

But after skiing the Cho today on lifts at Crystal Mtn WA I had to comment again. Boot top 2 day old softies, to glare ice down low on the mtn. These things ski like a decent down hill ski at 89 under foot all with a TLT P and green soft tongue. Solid performance..really solid! Impressive ski and so darn light they are nothing to carry or ski with. This is be a huge hit eventually for Dynafit once word really gets out just how good they really are. Good enough edge to ski the icecoast and light enough to haul up Rainier for a day shot or a 3 week trip to Denali. Solid enough to rip any chair lift line. Impressive little ski. FWIW I am 190#, 6'1" and skiing a 182 every where. There is some real tip rocker so they do ski a bit short. Everyday ski...190 would be fun. Touring mid winter 182 should be dialed...gully summer/volcano ski...174 is going to be a feather and will rock your world.

Cho!

Cho!

Posted on

One of the best 90mm skis around...for ANYTHING !

Close to Carbon

Close to Carbon

Posted on

Detail shot of the Carbon Speed Stringers in the tip of the Cho Oyu.
Carbon adds dampening properties to help prevent chatter in this VERY lightweight ski.