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GPS data produced at a SG run

post #1 of 17
Thread Starter 

Here is something that I think will be of intrerest to some of you. I put a GPS inside the speedsuit at the back of my boot and got some interesting data to analyze. The run in question was the first run of a two run SG Masters race. I was on my new 210cm Rossignol SG skis. Did not do to well in the first run but fell in the second after trying too hard.

 

The course was flat with ridges at the top section. At the steep it was solid ice WC style. It was at the end of the steep where I reached my top speed of 90 km/h (55 Mph) and the flat section was tricky due to a ridge, high speed and tricky gates. At the end there was a drop before the finishing area.

 

The darker the color of the track the slower the speed. You can see that its dark red at the ends and yellow in the middle. Red color in the yellow line show where I lose speed. At the top section there is a ridge that probably slowed me down but at the beginning of the steep I slammed on the brakes. The effect is drastic and thats where I lost any chanse of getting a good time. In the second race I did not brake at the top of the steep but crashed on the second gate to the left and slid down the whole steep crashing through the long gate on my way down. My GPS showed 67 km/h at the time of my crash. Did not hurt myself which was good.

 

Here is the track:

GPS Ski 001.jpg

 

post #2 of 17

What kind of wax did you use? biggrin.gif

post #3 of 17
Thread Starter 

I used Vola speed base for base and then just some low fluor Vola red wax as the last coating I think. I dont remember. Wax had nothing to do with it Im affraid. But next year I will deffinetly test all kinds of waxes, booster strap tentions and underware colors with the GPS to find out what matters the most :).

post #4 of 17

I have better question, then what wax did you us. What the heck of a GPS/software did you use? :) My normal gps is nowhere near this accurate, not to mention I can't even set it to record position more then once a second. So if it's not too much of a secret, can you let me/us know what gps and software were you using for this.

post #5 of 17
Thread Starter 

primoz - no secret. Glad you asked. This device:

 

http://www.locosystech.com/product.php?id=30

 

I use it primarily for speed windsurfing but its fun to use on a bike, in a car or when I ski. It features doppler technologie. Only a few GPS devices are approved by the gps-speedsurfing website. The Locosys GT-31 is one of them.

 

Then I have a software named GPS-Results which is made by a friend of mine. You can download it from the net, its not expensive. It gives me the possiblilitie to check out my tracks and eventually if they are windsurfing tracks, upload to the governing web site with results calculated for ranking purposes. They also give me a google earth overlay if I want.

 

 

post #6 of 17
Thread Starter 

Skiracer55, up until this season the difference between 191cm GS skis and 210 SG skis has been huge. I wonder how the new GS skis will fit into the landscape? For turny masters SG cources I guess a long and hefty GS ski could do the trick. We will se how it goes. On our masters tour we will stick to regular pre 2013 FIS skis even though many of the men me included will continue using the womens lengths for tight courses. Anyway, GPS gives another viewpoint on speed skiing. Next year I will deffinetly try to clamp the GPS onto our best racer and then be able to compare. Is he carrying the speed through out the course or is he braking due to very high speeds but still much faster in time and top speed? How much faster are they at sertain points of the track?

post #7 of 17

Good stuff.  I'm going to continue to use Women's FIS GS skis, I just ordered some stuff for next year:

 

- 165 FIS SL

- 158 FIS SL.  I want to try something a little shorter and see if it helps my quickness in a course.

- 183 FIS GS. I already have two pairs, but there's no guarantee re what we'll be able to get after next season, so I'm stocking up.

- 130 flex Redster boot.  I'm really looking forward to skiing in this one...

Quote:
Originally Posted by tdk6 View Post

Skiracer55, up until this season the difference between 191cm GS skis and 210 SG skis has been huge. I wonder how the new GS skis will fit into the landscape? For turny masters SG cources I guess a long and hefty GS ski could do the trick. We will se how it goes. On our masters tour we will stick to regular pre 2013 FIS skis even though many of the men me included will continue using the womens lengths for tight courses. Anyway, GPS gives another viewpoint on speed skiing. Next year I will deffinetly try to clamp the GPS onto our best racer and then be able to compare. Is he carrying the speed through out the course or is he braking due to very high speeds but still much faster in time and top speed? How much faster are they at sertain points of the track?

 

 

post #8 of 17

My name is Skiracer55 and I'm a Gear whore.....................................................................................................................ROTF.gif

Quote:
Originally Posted by SkiRacer55 View Post

Good stuff.  I'm going to continue to use Women's FIS GS skis, I just ordered some stuff for next year:

 

- 165 FIS SL

- 158 FIS SL.  I want to try something a little shorter and see if it helps my quickness in a course.

- 183 FIS GS. I already have two pairs, but there's no guarantee re what we'll be able to get after next season, so I'm stocking up.

- 130 flex Redster boot.  I'm really looking forward to skiing in this one...

 

 

 

 

post #9 of 17
Thread Starter 

Skiracer55, I was actually thinking of the same. Stocking up with the r24m skis. I whish I had kept at least one pair of the r21m skis when they were still available. Turns out this one guy in my age group that keeps winning all the time uses such skis. 190 or so long but with r21. There must be WC women out there skiing on longer skis than 183. So are they using r27 skis or do they have custom made?

 

The Redster boot has been available here this winter. But only in small sizes. This one master that was using one at the exact same GS/SG event I used the GPS had a pair of 170 stiffness. But he said it was very soft in comparisson. He said his old Dobies 130 were stiffer. Go and tell. It can be debated how stiff they need to be. Will the old boot still be in production? All WC racers still use the old boot.

post #10 of 17

 There are definitely some women on the WC going bigger. Lindsey Vonn is skiing on a guy's GS ski, dunno whether it's 188 or 191. I'm pretty sure she's just using the stock ski, which is greater than 27. So I've got 2 pairs of 183, 24M GSs, and probably by about February 2013, my Atomic dealer will know what's available for the 2013-2014 season, so I'll figure out what to do then.

 

Re the Redster 130, I'm gonna give it a try and see how it goes. I have two pairs of the 130 flex RaceTech CSs, so I'm fine for boots if the new ones don't work out.  Dunno if the old boot will still be in production. The WC guys will use whatever works for them, although the Atomic site already has Marcel Hirscher saying that the Redster is the fastest boot out there, whatever that means, or words to that effect...

 

Quote:
Originally Posted by tdk6 View Post

Skiracer55, I was actually thinking of the same. Stocking up with the r24m skis. I whish I had kept at least one pair of the r21m skis when they were still available. Turns out this one guy in my age group that keeps winning all the time uses such skis. 190 or so long but with r21. There must be WC women out there skiing on longer skis than 183. So are they using r27 skis or do they have custom made?

 

The Redster boot has been available here this winter. But only in small sizes. This one master that was using one at the exact same GS/SG event I used the GPS had a pair of 170 stiffness. But he said it was very soft in comparisson. He said his old Dobies 130 were stiffer. Go and tell. It can be debated how stiff they need to be. Will the old boot still be in production? All WC racers still use the old boot.

 

 

post #11 of 17

 

Quote:
Originally Posted by Atomicman View Post

My name is Skiracer55 and I'm a Gear whore.....................................................................................................................ROTF.gif

 

 

 

irony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gif

ROTF.gif

post #12 of 17

Guilty as charged. Or, as we used to say in Summit County, "You can never have too many pairs of skis". Or road bikes. Or tennis gear. Or sports cars.  Okay, I'll stop...

 

biggrin.gif

 

Quote:
Originally Posted by Atomicman View Post

My name is Skiracer55 and I'm a Gear whore.....................................................................................................................ROTF.gif

 

 

 

 

post #13 of 17

 

Quote:
Originally Posted by SkiRacer55 View Post

Guilty as charged. Or, as we used to say in Summit County, "You can never have too many pairs of GS skis". Or road bikes. Or tennis gear. Or sports cars.  Okay, I'll stop...

 

biggrin.gif

 

 

   

 

FIFY!  biggrin.gif

 

IMG035.jpg

 

post #14 of 17

Thought you'd like that!biggrin.gif

Quote:
Originally Posted by crgildart View Post

 

 

irony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gifirony.gif

ROTF.gif

 

 

post #15 of 17

You are beyond help from even GWA (Gear Whores Anonymous!)beercheer.gif

Quote:
Originally Posted by ScotsSkier View Post

 

 

FIFY!  biggrin.gif

 

IMG035.jpg

 

 

 

post #16 of 17



1. We admitted we were powerless over skiing - that our lives had become unmanageable.

2.
Came to believe that a powder day greater than ourselves could restore us to sanity.

3. Made a decision to turn our will and our lives over to the care of the big sac manager as we understood Him.

4. Made a searching and fearless moral inventory of our quiver.

5. Queried to search engines, to ourselves and to another human being the exact nature of our skiing needs.

6. Were entirely ready to have eBay remove all these defects of quiver gaps.

7. Humbly asked Craigslist to remove our shortcomings.

8. Made a list of all persons we had harmed, and became willing to buys skis for them all and take them skiing.

9. Took such people skiing wherever possible, except when to do so would injure them or others.

10. Continued to take quiver inventory and when we were missing something promptly added it.

11. Sought through prayer and meditation to improve our conscious contact with The ski God as we understood Him, praying only for knowledge of His will for us and the quiver to carry that out.

12. Having had a spiritual awakening as the result of these steps, we tried to carry this message to Bears and to practice these principles in all our affairs.

post #17 of 17

13. Said Twelve Step Programs are never enough for Chronic Gear Heads.

 

14. Were not afraid to take our credit cards to the limit.

 

15. Paid a lot of $$$$ for a bumper sticker that reads "He who dies with the most toys wins".

 

16. Said "I know ski season's over...but I got an incredible deal on two pairs of race stock 210 Super Gs!  With bindings!

 

17. Learned the secret of Increasing the Quiver Size whilst maintaining a steady level of Domestic Points (Hint:  A walk-in basement works wonders...)

 

...there's more, I just can't remember it right now...

 

biggrin.gif

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