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Best Tune for Ice - Page 3

post #61 of 63
Originally Posted by sibhusky View Post

You wouldn't think with a natural, uneven surface like snow that little base burrs could make skis act so nuts, but they can. They make the ski unpredictable because they are not cutting into the surface consistently along the whole edge. You don't want one part of the edge skidding while a different part of the edge engages like Velcro.

The hanging burr  continues straight  off the side edge very very slightly below the level of the base edge. it is like having a little stationary rudder sticking down into the snow.  Skiing won't break it off. 


So you can imagine what havoc this creates when you want your skis to slide sideways even slightly.  Once you get them up on edge, it's not so bad, but to turn the other direction you must flatten the ski and now the damn skis don't want to come off edge and basically you have 2 little rudders fighting to keep the ski going straight while you are trying to turn. it is truly a miserable experience!


Here is a graphic Slidewright composed,  You are looking at the ski on it's side The bottom of the base  base is the left gray line & the snow snow would be pinkish color  It is too bad he didn't flip it 90 degrees to the left. The top gray line is the side edge.




2 additional possiblities


#1 Skis are under base  beveled in the tip & tail or inconsistent base bevel


#2 And this is highly possible. Is there structure that continues from the P-tex into the metal base edge??  this will also act just like a hanging burr.  If there is structure in bae edge it must be complelety polished out with a series of diamond stones.  Teh issue wit that is you may increase your base bevel over 1 degree depending on the amount of polsishng you have to do to smooth the edge. So they could need a new grind to set them to 0 and remove the strructure in the base edge metal!

post #62 of 63
Thread Starter 

I skied another couple of days on them to try and really give them a chance. To see also if it was perhaps my technique. Well, I quickly became very frustrated with them and in fact actually grew terrified of them. The reason is because they had no consistency. They would fight you with the twisting and torquing and then just completely blow out with no edge grip at all. I can understand how an inconsistent tune would do that I guess. I tried deburring them some more and while I'm glad to have tried it, clearly I am not skilled enough yet to trust my daily drivers to my own hand.


So I took them to another shop and had them completely redone to start over. Did a base grind resetting the base bevel this time to .75, edges at 2, sharp tip to tail. Stone grind on a Wintersteiger and of course a wax. Everything came out beautifully, and best of all, they ski great again. No torque whatsoever, but still lots of grip and bite. The new base bevel feels great too, quicker but not too quick and I think it produces more grip (though I know you guys say it doesn't, maybe its just it gets on edge earlier).


Carving is still fun too although I dial it back on ice. Same with smeared turns. I think part of that is just the limits of the ski. So I will probably buy a dedicated ice-carving piste ski for those conditions in the future. Not to toot my own horn but I had another lesson the other day and as long as there was just a bit of soft snow my instructor said I was making really well shaped smeared turns on piste. Lots of extension and shape at the top of the turn and nice inside knee progression. This was before the latest tune. But as soon as they got onto solid hardpack they misbehaved again. Point is I guess there was definitely something wrong with the old tune.

post #63 of 63

Not sure about the 84's, but I got my son some 76's I believe and they have a variable radius from what I have read.  This means that they are listed at one but can go tighter. Part of the Auto turn.  Forget the article that stated this.


The tune that he has is a 1/3 and to date has not experienced any issue.  My nephew who is lighter and skis on Jr. race skis with a longer radius and my old SL find them a nice responsive ski.  BTW his are 0.5/4 for the GS and my old SL's.


Based on what you have written, that you are not fully comfortable on a ski that actually bites in when required and it is giving you some issues.  I don't think that you are over skiing the ski, but the ski is over skiing you and this is something that you must slowly progress into.  In short experience and comfort level.  That only comes with time and practice.


Under performing skis are skis below your level, over performing skis are skis that do exactly what you ask them even if you are not ready.  I suspect that you are at that stage where you above one and below the other.  So....


Ski hard and make it to the next level, because you are almost there.


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