Way to determine radius from dimensions and length?

[skieast21]

I am not good with math and I don't have the actual ski that I want to know the radius in front of me so in my research I did find this on how to determine radius https://www.nemasters.org/alprulesequipment.pdf (bottom of pg 2) but I can't really make good use of it. I also found this https://www.math.utah.edu/~eyre/rsbfaq/physics.html, but I don't think I have the correct measurements to determine radius either.

Does anyone know of a calculator or something that will spit out the radius? I am trying to find out what the radius would be for a 150cm ski that has dimensions of 121/81/107. Or, if you know the radius of a larger ski with the same dimensions, is there a way to easily calculate, well, if this ski is X in X size, then it will be Y in Y size?

I guess this is taking ski researching to the max, but I am curious.

Thank you.

 

[volklgirl]

I have that very thing!

Here you go:
https://www.websurd.com/epic2004/PMSidecutRadCalc.xls

It's not totally acurate in its estimation of turn radius, but if you add 5cm to your published length, it seems to come within +/- .3m of the published radii (at least for Volkl's literature).

 

[skieast21]

Thank you, Volklgirl! I think that is exactly what I was looking for...I am, however, having difficulty filling in the cells because it is password protected as a read only file??!

Has anyone else opened it up?

 

[volklgirl]

You should be able to enter info only in the 1st, 3rd, 4th, and 5th columns (I think); length, tip, waist and tail. Everything else is automatically calculated and protected. If the link doesn't work for you, PM me your addy and I'll e-mail you the Excel file.

Oh, if it's coming up as Read-only, it may mean someone else is in it at that exact time. Maybe try again in a few minutes, or download it to your computer.

 

[skieast21]

Oh, thank you! I figured it out. I was trying to enter it into the cells below thinking that they were programmed the same as the ones above and the above was an example....that was so easy once I got it! It's actually really fun to fool around with and see how different changes in dimensions are reflected! Thank you so much for posting that for me. This board really does have everything you could ever want, haha.

 

[volklgirl]

You're most welcome. Have fun playing!!!