Originally Posted by Alexosu
That's odd. I found my 184 AC4 great in powder and hardpack too, as long as you don't carve them too fast. But what surprised was that the skis got deflected in tracked powder almost too easy. I hope it's the ski and not me
I have never skied the AC4's, but my understanding is that they are a fairly stiff ski, and I might have an explanation for the seeming paradox.
When skis are pointed in a different direction from the direction they are actually moving (ie, are being skidded), when the tip of an edged *stiff* ski runs sideways into a lump of denser snow, the sideways force on the tip is immediately translated into a L-R yawing torque on the foot. In other words, the skier perceives it as the ski being deflected. It's like having a non-yielding, several foot long piece of lumber attached to the front of your foot and somebody twisting it back and forth. There is no way you can resist it. The torque is just too large.
OTOH, the forebody of a softer ski skidding in the same situation will flex before it transmits the yawing (L-R deflecting) force to your foot, so the skier doesn't feel as large a torque acting on them.
When carving or straight running, the opposite happens. When stiff skis are pointed exactly in the direction they are moving (ie, carving), and encounter a clump of high density snow (eg, a track from a previous skier), they flex modestly, ride up and over the clump, and distribute the "impact" of the clump over the full tip-to-tail length of the ski. They feel like a long wheelbase car in that they provide a very smooth ride over the inhomogenieties. Many people describe their experience on the G4/AC4 in these terms.
When carving or straight running on softer skis over clumps of denser snow, the impact of dense clumps is not distributed over the length of the ski and is more concentrated under the middle of the ski. This makes soft skis feel less smooth when carving or even straight running. This is another reason many advanced skiers prefer stiffer skiers.
Thus, I suspect that you feel that the G4 / AC4 is not very stable (whereas others report the opposite) because you may still have some residual skid left in your turns.
Obviously, no one can tell this for sure without seeing you ski, but this is my strong suspicion.
Tom / PM