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What is the problem? Ski, Boot or Binding

post #1 of 5
Thread Starter 

I have recently purchased the Rossignol SC80 flat, ski length 185cm and mounted it with the Rossignol Axial2 120 binding at the recommended mounting point, against my suggestion to the shop.


My problem is that I cannot ski balanced in every situation on this ski but can when skiing many others that  I have demoed. With this ski I find myself in the back seat and working hard to keep forward. I am especially off balance in the back seat on steep runs with bumps that are packed powder or ice, especially if the bumps are deep. Skiing any pitch in fresh powder or doing GS turns on any pitch of groomed or ICE is not a problem.


I ski in advanced conditions, steep tree and mogul runs that are powder or crud 70% of the time but ICE or packed powder 30% of the time. I ski at an advanced level having very good awareness of my balance 90% of the time. I am a 6 foot, 190 pounds and a strong skier. I use a size 28.5 Dalbello Krypton Pro ID boot with both forward lean adapters added. 


So my questions are as follows: Is the ski mounted too far forward, the mounting line is 87 cm from the tail and I find at this point the ski has too much tail? Is the ski too long for what I am trying to do? Is this the wrong ski altogether? Is the boot forward lean, ramp angle etc too much for my ankle flexion causing me to lean back to compensate? Or finally is the binding ramp angle too much, I believe it is 1.5 degrees?


I am just starting to get into the technical aspects of ski and boot setup and find this quite interesting and would like to hear what others have to say.


post #2 of 5

Start by measuring the center of the ski -- it will be exactly halfway between the forward and rear contact points.  What's the distance between that location and the boot center mark? 

post #3 of 5

Measure the height of the toe piece ski boot contact piece to the bottom of the ski, and the height of the heel piece ski boot contact piece to the bottom of the ski.  You'll find a difference of several millimeters.  The heel height is likely all or part of your problem.  If the space under the heel piece can be removed (and the screws shortened) or a spacer put under the toe piece (with longer screws), you may find that you're finally balanced.  Removing the heel spacer worked just right for me.

post #4 of 5

First, welcome to Epic jmcosmo65 .


There is a wealth of information here regarding all the variables that play into how a ski will feel and function for you.


Some of the major variables:

Boot ramp (angle of the bootboard and footbed)

Boot forward lean

Binding delta (angle formed by the difference in height between the heel and toe)

Binding fore/aft mounting position

Ski length, sidecut, flex pattern, etc.


If it all looks like this is confusing, well it is.  I'm probably developing a new reputation for myself as the keeper of "doom and gloom" when it comes to getting this stuff right, but it is definitely a challenge.


I would start off with the suggestions so far - check the where the ski midsole mark is in relation to the Center of the Running Surface (CRS) and check the binding delta (really need a caliper for this one).  We may be able to deduce some recommendations from that little bit of data, but can't promise anything since there's so many other things that come into play (including skiing style and ability).



post #5 of 5

all the above is solid. and my expeience (given a basically standard binding as you have) is mount forward to stay out of the back seat, creates a larger sweet spot in many models, and the ski you have will not get squirrely with that minor adjustment.

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