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Type: Posts; User: alude

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  1. Replies
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    I found that it doesn't care that much about...

    I found that it doesn't care that much about "pure carving". It cares about high edge angle and a rounded turn shape (and a few other factors), and although all these are kind of blending together to...
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    +1 on the post surgery care. After swelling...

    +1 on the post surgery care.

    After swelling gets away, if it is a clean cut ACL, she should be fine to walk around even without surgery. There is no rush, as long as she can avoid running+cutting...
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    Nice! Any info on the mass?

    Nice!

    Any info on the mass?
  4. We spent some time at Stoeckli last fall and...

    We spent some time at Stoeckli last fall and measured a few of their skis that are harder to find near us and that includes some FIS skis: WRT, WRT Pro, SC, SL, SL FIS, GS, GS FIS, Orea, ... They are...
  5. I just added a few more skis, mostly some with...

    I just added a few more skis, mostly some with convex tip and/or tail, so a bunch of Atomic, Armada and Line (including some from '22-23 that we didn't have time to process last year).


    Number...
  6. A few additions, mostly long skis and skis that...

    A few additions, mostly long skis and skis that Scott Sports sent us:
    Number of '23-24 skis: 714
    Total number of skis: 4601

    A few more to come...
  7. Total skis from 23-24: 615 Total # of skis: 4503

    Total skis from 23-24: 615
    Total # of skis: 4503
  8. I just added about 250 skis in the comparator, so...

    I just added about 250 skis in the comparator, so we are now have 4150 total. Enjoy!

    FYI, we just measured about 800 skis at SkiEssentials last weekend, so there are about 550 more skis coming...
  9. I totally agree. I do not like the average...

    I totally agree. I do not like the average stiffness, but most people want less information rather than more. That is why we added the average value.

    What I like to look at are the stiffness...
  10. We are happy to measure anything that is made...

    We are happy to measure anything that is made available to us.

    Can you make a list of the FIS ski of interest? I could try contacting the different brands...
  11. We just added a bunch of skis from RMU! Enjoy...

    We just added a bunch of skis from RMU! Enjoy comparing them...
  12. Sorry, I haven't thought much about that. Can you...

    Sorry, I haven't thought much about that. Can you describe what you didn't like with pintails?

    Let me also know if you want me to investigate some relations beyond what you can do in the...
  13. That is correct. Our definition of setback is the...

    That is correct. Our definition of setback is the distance between recommended mountpoint and ski center. It is still on my list of things to add the center of sidecut, but when you get into details...
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    If I understand correctly, on a material level,...

    If I understand correctly, on a material level, faster bases have more graphite in them (to dissipate heat), which also makes them more brittle/fragile.

    I don't know much about...
  15. FWIW, I measured my Heritage Lab C132 190 before...

    FWIW, I measured my Heritage Lab C132 190 before mounting them. It is now in the comparator... Just wish I was out west skiing them!
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    BTW, great post. I wish all skis would come with...

    BTW, great post. I wish all skis would come with such story!
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    We measured the 170 and 184 at Ski Essentials...

    We measured the 170 and 184 at Ski Essentials this fall. Measurements here. Evo has the weight of the 170 and 177 here. All measurements seems to be in agreement... about 1540g for 170cm, 1600 for...
  18. I have the Dynafit TLT Speed Radical Bindings....

    I have the Dynafit TLT Speed Radical Bindings. These guys: https://www.mec.ca/en/product/5025-575/tlt-speed-radical-bindings
  19. Binding question: I have some dynafit speed...

    Binding question: I have some dynafit speed binding that I was thinking of putting on the C132 for 50/50 resort/touring use. I use dynafit radical on my other touring skis and they work well for me....
  20. Thread: Peak Chat

    by alude
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    The video is misleading. When adding a metal...

    The video is misleading. When adding a metal sheet to an existing laminate, the ski will always be stiffer. Titanal is about as stiff as fiberglass longitudinally. What makes Cyrus statement...
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    I will have to re-read this thread. I think I...

    I will have to re-read this thread. I think I might have confused center of sidecut (as in the position of the center of sidecut) in a few places with center of effective edge. I do not like the...
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    This is easier to do than updating the website......

    This is easier to do than updating the website... so here it is:

    441957

    First graph is the recommended mount point for "progressive" and "traditional" skis. Progressive is defined here as all...
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    I am a bit confused. Are you saying BOF on center...

    I am a bit confused. Are you saying BOF on center of sidecut (also narrowest point) or midsole on center of sidecut?



    I did a few CAD drawings and I think I was confused. I thought that the...
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    Hum, you won't need to push hard! We already have...

    Hum, you won't need to push hard! We already have that value, I just need to find some time to publish it on the website.

    However, I might want to try a few different ways of calculating the...
  25. I finally had the time to look at the torsional...

    I finally had the time to look at the torsional stiffness measurements for these 270 skis that we had doubt about. We compared the measurements with unchanged models from previous years, and we think...
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    You can see how the BP88 165 and 171 compare to...

    You can see how the BP88 165 and 171 compare to the SA 98 172 here. I choose the 22-23 versions, but you can pick any other year for a better comparison...

    I typically look at running length,...
  27. Do you scale up each part of the ski by 15% or do...

    Do you scale up each part of the ski by 15% or do you mostly make one section of the ski stiffer?
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    For Ripstick Tour 104: - 170.9 for the 173 cm...

    For Ripstick Tour 104:
    - 170.9 for the 173 cm
    - 177.6 for the 180 cm

    Measured as the projection onto a flat surface (top view).
  29. Well, love it, but too much to discuss to type it...

    Well, love it, but too much to discuss to type it all!

    Love the metrics. Many new things that I think are important to consider...

    A few questions:
    - What would be your computer model? What...
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    Well, turns out that we had a mechanical issue...

    Well, turns out that we had a mechanical issue during our torsional stiffness measurements that propagated further than we thought. We re-measured about 60 skis and I pulled out all measurement from...
  31. Just added about 350 skis from 22-23... However,...

    Just added about 350 skis from 22-23... However, I also pulled out the torsion stiffness measurements we had for about 270 of them. We noticed some weird measurements in torsion associated with some...
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    Hum... I usually trust FriFlyt results, but this...

    Hum... I usually trust FriFlyt results, but this is a bit against what we measured.

    The locator are some of the skis that really stood out when we measured them 2 weeks ago. They are so light!...
  33. Just added about 300 skis from 22-23... enjoy!...

    Just added about 300 skis from 22-23... enjoy! More coming soon...

    Total skis from 22-23: 576
    Total # of skis: 3546
  34. Ahaha, of course! Happy to measure any skis that...

    Ahaha, of course! Happy to measure any skis that Marshal send our way and return them unharmed.

    But with most of Heritage models being already sold out, I am not sure if that will happen.
  35. We have added about 300 2022-23 skis to the...

    We have added about 300 2022-23 skis to the comparator: https://soothski.com/compare/

    We measured 350 more at Ski Essentials last weekend. We just need to process them. They should be added to the...
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    I think we are saying the same thing, just coming...

    I think we are saying the same thing, just coming from different point of views.

    I think in term of fundamental material properties (E, which only depends on the fiber orientation and not the...
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    Makes sense. Some people say that adding metal...

    Makes sense. Some people say that adding metal (like in adding without removing or reorganizing anything) doesn't change the longitudinal stiffness. I think it is important to realize that the...
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    Marshal, can you explain why metal doesn't add...

    Marshal, can you explain why metal doesn't add much longitudinal stiffness to a ski?

    Aluminium has twice the Young's modulus of most tri-axial fiberglass and a thin layer of aluminum (0.3mm) is...
  39. Many shops graciously allow us to measure the...

    Many shops graciously allow us to measure the skis in their inventory. They enjoy having our measurements as it helps them in helping their customers. We do a few different trips near Quebec where we...
  40. Back online. We just started measuring 22-23...

    Back online.

    We just started measuring 22-23 skis. Should be all in there within 3-4 weeks...
  41. It should only be temporarily. You can still...

    It should only be temporarily.

    You can still compare skis there in the meantime: https://compareskis.shinyapps.io/compare
  42. The best reference I found on the subject is...

    The best reference I found on the subject is Skiing Mechanics by John Howe (once in a while you can find it for cheap):
    https://www.amazon.ca/New-Skiing-Mechanics-John-Howe/dp/0935240020

    This...
  43. Natural frequency is a function of both stiffness...

    Natural frequency is a function of both stiffness distribution and mass distribution. We just measure the total mass. It is possible that these two skis have different mass distributions.

    We...
  44. In short: we twist the ski and measure the base...

    In short: we twist the ski and measure the base twist angle at each mm along the full length of the ski. Then we differentiate to get the change of twist angle for a given length, and use that and...
  45. I was talking about skis on another forum, and we...

    I was talking about skis on another forum, and we found something interesting about the Monster 108 (and other Monsters). I thought you guys might like it.

    Yes it is a heavy ski, and yes it is...
  46. FYI, we changed the way we deal with flat/reverse...

    FYI, we changed the way we deal with flat/reverse cambered skis. A few flat cambered skis were being identified as reverse cambered due to the local curvature around the mountpoint. This triggered a...
  47. We added ski overall taper angle to the list of...

    We added ski overall taper angle to the list of specs...

    We also investigated with Vitamin-I the change in camber in our measurements. It is a little bit long to fully describe, but the key...
  48. So awesome to read that! Thanks!

    So awesome to read that! Thanks!
  49. Replies
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    I would also say that +/- 50g of variation from...

    I would also say that +/- 50g of variation from the measured weight of skis from a same year is typical. If you compare measurements at Blister, Evo, us at SoothSki, and a few others, you should get...
  50. I am surprised too. I think we all experienced...

    I am surprised too. I think we all experienced ski ageing!

    We did a few tests:
    - Flex a ski for something like 100,000 cycles on an instron machine... but that was only in bending, maybe not...
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