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Paul10
Reply with quote  #1 
Hi 

I'm looking for any fin or ski questions and I'll put together answers for you.  The idea is to build up a bit of data bank here. Also to compare to some of the other information that is out there.  

It's good to read "Fin Area" is being talked about. I'll have to say that the new crop of fin settings (HO, D3, etc.) are pretty darn close to what we were skiing back then. And the skis are very good straight up, so tweaking is not so critical as it once was imo. Progress definitely made by all manufacturers. 

At the bottom of the page you'll find our Fin Chart from years back. It might have been a bit daunting to use at first go, but am happy to explain what it all means and hopefully we can update it sometime this year. 

<https://fluidmotionsports.com/pages/manuals  (goto bottom of page)

PS: If you want to order liners, parts, guards etc. feel free to use my personal discount code "Paul10" Cheers 




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Unregistered
Reply with quote  #2 
Quote:
Originally Posted by Paul10
Hi 

I'm looking for any fin or ski questions and I'll put together answers for you.  The idea is to build up a bit of data bank here. Also to compare to some of the other information that is out there.  

It's good to read "Fin Area" is being talked about. I'll have to say that the new crop of fin settings (HO, D3, etc.) are pretty darn close to what we were skiing back then. And the skis are very good straight up, so tweaking is not so critical as it once was imo. Progress definitely made by all manufacturers. 

At the bottom of the page you'll find our Fin Chart from years back. It might have been a bit daunting to use at first go, but am happy to explain what it all means and hopefully we can update it sometime this year. 

https://fluidmotionsports.com/pages/manuals  (goto bottom of page for link!)

PS: If you want to order liners, parts, guards etc. feel free to use my personal discount code "Paul10" Cheers 




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seasoned
Reply with quote  #3 
what about changes in warm vs cold water?
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Paul10
Reply with quote  #4 
Sure - Some lakes don't change too much when they cool off. Because the impurities stay the same. Other lakes "die" and the water cleans right up. These deeper, fresh or northern lakes will see profound changes in water quality. 

The water becomes more viscous, which means thicker or heavier like a higher grade motor oil. 

The ski will not turn as a fast, and it takes more time to complete the turn. 

Additionally the ski rides with more overall drag and more tip up.  The fin slips less too because the fin gets more grip in the stiffer water. 

Because the slalom course is a fixed dimension, this can all add up to a significant drop in buoy count.  

So what do you adjust ski wise? Well everything. To correct tip attitude, the boots go forward 1/8-1/4". The fin has to go forward with that say 0.100" to keep some side slip happening. The fin area can also be reduced by decreasing depth a little. And the wing - lower angle like 4-6 deg or pull it completely and give the arms a break.  

You may never match a summer season score but at least the ski will turn with some handling authority.
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Joel
Reply with quote  #5 
Whats about the wing?
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Paul10
Reply with quote  #6 
The wing is a foil - like a mini air chair. 

It wants to pull the tail of the ski down and move level through the water. 
When you get on your front boot, the whole ski is driven lower into the lake, by the wing

When you get centered or on the back boot, the tail is dropped, tip is lifted higher.  Get even further back and the ski is driven higher out of the water.

So the wing amplifies the acceleration (tip out) and turning power (tip down) through the course. 

I agree that for longer lines, colder fresh lakes you'll want to run with either low angle or even no wing at all. 

Of course for ski lakes and comp skiing, it's used by 100% of skiers.  I don't like big angles but don't spend that much time in soft water so perhaps 8-9 is the max angle you'll ever use.  




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