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All the FIS approved skis have the same exact dimensions?

post #1 of 12
Thread Starter 

All the FIS approved skis have the same exact dimensions, length, width, radius, regardless of manufacturer? Looking into the FIS specifications, http://www.fis-ski.com/data/document/competition-equipment_1314_30.09.2013_clean.pdf  I noticed that FIS skis seems to have restrictions, but not exact dimensions, and the manufacturers seems to have some freedom... how it looks  the real world?

post #2 of 12

FIS specifies minimum length, turn radius, and width underfoot for each alpine discipline. How each manufacturer makes their skis to conform to these rules is different for each manufacturer, and some don't even list their dimensions on their websites, only stating that they are "FIS-legal".

 

In reality, they generally want the shortest, narrowest ski that will give them the minimum turn radius. There are only so many combinations that will get you to there, so they will close from one manufacturer to another, but not exact.

post #3 of 12
Thread Starter 

Thanks for the answer ZeroG! Sounds pretty reasonable for manufacturers to look for the same "perfect" ski,.. I believe if a ski (geometry) would perform much better than others, probably all the racers would end up skiing on it ... I was curious if FIS establishes that racers compete on skis with identical geometry or not, regardless of manufacturer, or is a decision that comes from the racers / manufacturers.

post #4 of 12
Quote:
Originally Posted by ZeroGravity View Post
 

 

 

In reality, they generally want the shortest, narrowest ski that will give them the minimum turn radius. There are only so many combinations that will get you to there, so they will close from one manufacturer to another, but not exact.

 

FIS rules require the skis must be marked with the length and the radius.

 

And I would not agree with the above statement.

post #5 of 12
... Flex pattern and many other properties are not specified and a Head is very different from a Fischer or an Atomic for instance... don't think it makes them all the same...
post #6 of 12
Thread Starter 
Quote:
Originally Posted by razie View Post

... Flex pattern and many other properties are not specified and a Head is very different from a Fischer or an Atomic for instance... don't think it makes them all the same...

With different flex patterns, the skis will have different behavior, which could also lead to some possible differences in geometry... That is not in contradiction with the idea that all the FIS race skis have more or less the same geometry (shortest, narrowest, etc)?

post #7 of 12
Supposedly the specs are safety related. It's not like America's Cup. You've got physical bodies as the main machine, so different skis to suit those bodies.
post #8 of 12

Talking about WC skis, Head is different then Head, and Fischer is different then Fischer ;) Each company normally has some 5, 6 different models (for each discipline and each gender) and racers pick whatever fits them best. Sometimes, but that's really just sometimes, there are specific skis made for certain racer (talking about shape not flex), but there's maybe 3 or 4 such skiers in WC, everyone else get to pick from those few different models company makes. Those models don't differ just by different flex but also different shape, which means these skis are far from same measurements.

post #9 of 12

What I find crazy is how different the turning radius is now between GS cheater skis and FIS skis. It seems like a major jump to go 17m->21m->30m->35m in the span of just a few years... 

post #10 of 12
Quote:
Originally Posted by Metaphor_ View Post
 

What I find crazy is how different the turning radius is now between GS cheater skis and FIS skis. It seems like a major jump to go 17m->21m->30m->35m in the span of just a few years...

Much of that has to do with the width of the tip.

 

the wider the tip, the easier it is to draw the ski into the turn. Although there is a point of diminishing returns if the tip gets too wide.

 

And the more taper angle (difference between waist and tail) (tip and tail) the more versatile turn shape is a available since the ski does not come so far back across the hill (caused by a tail dimension closer to the tip or waist dimension).

post #11 of 12
Quote:
Originally Posted by Metaphor_ View Post
 

What I find crazy is how different the turning radius is now between GS cheater skis and FIS skis. It seems like a major jump to go 17m->21m->30m->35m in the span of just a few years... 


Didn't they go from almost INFINITY-> like 19m at the end of the 90s?  They're just working their way back up, possibly in order to reduce injuries associated with skis that turn too sharply and suddenly at such high rates of speed.  Still, I'm a bit surprised that they went all the way back to 35. 

post #12 of 12

As the example of Fischer WC FIS race SL 165, FIS specifies minimum length, turn radius, what are the dimensions of tip, waist and a tail width?

 

I really wondered if I may find such information somewhere.

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