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SunSurfer

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SunSurfer last won the day on October 16 2017

SunSurfer had the most liked content!

About SunSurfer

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  • Location
    Wellington, NEW ZEALAND
  • Home Mountain/Resort?
    Cardrona
  • Occupation?
    Anaesthetist/Anesthesiologist
  • Current Boards in your Quiver
    10+ boards between 160 & 178cm, 1995 to 2017 builds.
  • Current Boots Used?
    Modified UPZ RC10S. A pair of standard boots is just the start of the fun!
  • Current bindings and set-up?
    Regular stance. Models: F2 & Bomber TD3 Intecs. Isocline plates, both DIY design/builds and BBP 4mm, with UPM & 4x4 pattern, ride with fixed axle front. Experimenting with stance distance & skwal style stances.
  • Snowboarding since
    2008
  • Hardbooting since
    2008

Recent Profile Visitors

1,722 profile views
  1. Alpine Snowboard Plate Systems

    Given that the knee and ankle are primarily hinge joints when the legs are used to absorb shocks, and the direction of motion of a carving snowboard what are your thoughts about the effect of binding angles on effective shock absorption?
  2. BillyT, Was this the kind of thing you meant? This is Jasey Jay Anderson using serious rear heel lift, on top of seprate shock absorbers, for a very forward flexed rear knee. Note also the spring system setting differential at this point midway between turns. Screen grab from https://youtu.be/lntXm_t8JtI
  3. Beginner question about boot flex

    Think of your boot "shell" (not the liner) as having 2 different axes of stiffness. Laterally (side to side), due to the stiffness of the plastic boot cuff. Longitudinally, (heel to toe), due to i) plastic stiffness ii) design (including things like whether your buckles collide in deep ankle flexion) iii) tongue stiffness iv) spring flex control system setup (including what pairings of springs you are using) v) whether you're running Booster straps, or a non-elastic top strap, or none. What you describe suggests to me that you are utilising different angles of leverage against your boot cuffs to put the board on edge, and different proportions of lateral & longitudinal flex, as you rotate your bindings to keep toe & heel near the edge with differing board widths.
  4. Thanks for posting, lonbordin.
  5. What's your perspective/objective?

    I came here to learn how to carve. I keep coming to learn how to carve better because the sensation of carving is something I am addicted to. Part of my brain loves analysing, understanding, and experimenting with things, not accepting the current state of knowledge, and this applies at both work and play. I really appreciate the people here.
  6. Need help w/ toe-side wipeout (new Proteus on ice)

    I love this video from SES 2015. Trent is the first rider. He is used as a positive example in the Separate Zee Knees article. He is one of my exemplar riders. I love watching his fluid, powerful and forward facing style. In fact if you watch the first 6 riders in this video riders 1, 3, 4, & 5 all ride in the forward facing style that the introduction to Separate Zee Knees encourages us to move to. Steve Recsky & Corey Dyck are riders 3 & 4, and although I've ridden and drunk beer with rider 5 for the life of me I can't remember his name at present (someone will know him, put me out of my misery). Look at the way their shoulder, hips, and knees work together. Rider 2 & 6 (Jim Callen) provide some contrast. Jim, in particular carves really well, but their knees are more widely separated, and a result is to rotate their hips more along the board especially on heelside turns. If you think about it, a natural consequence of rotating the pelvis and body to face more toward the front of the board is to tend to bring the knees closer together. Not almost locked together like this snowboard Super G video from 1990, but closer than many current racers use.
  7. Need help w/ toe-side wipeout (new Proteus on ice)

    A couple more things always make me think that the underlying principle being emphasised is using the heel and toe to hold the board on edge. 1/ Minimising binding angles (i.e. moving towards 0 degrees) as the board increases in width so that the heel and toe of the boot are as close as possible to the edge of the board. 2/ Gilmour bias, which is taking 1. to the maximum for the front heel and the rear toe. The only way these make sense is if the heel and toe are being used. They make little sense for the rider making extensive use of lateral boot pressure to control the angle of the board.
  8. Need help w/ toe-side wipeout (new Proteus on ice)

    from "Separate Zee Knees" http://www.bomberonline.com/wp-content/uploads/2015/05/Separate-Zee-Knees.pdf "The remedy is to allow the knees to remain comfortably separated while carving, and even to force them apart while carving aggressively. When carving at high speed on steeper or variable terrain, we want our center of mass to be moving smoothly and quietly along a consistent path for maximal stability. This means maintaining a quiet upper body and making the turn initiation from the waist down, primarily with the knees. On a toe side carve, this translates to a slight outward movement of the rear knee, towards the inside of the turn. On a heel side carve, the turn initiation becomes a slight outward and forward movement of the front knee, towards the inside of the turn." Watching the teamriders in the ALLFLEX Carving Session who clearly use their knees in this way, and keep their knees widely separated, the video shows their hips aligned along the board on their heelside turns in particular. This has to result in the force on the edge being exerted out of the heel and toes. Vic Wild and Jonghyun Kim have a body alignment much more as you aim for in the introduction to "Separate Zee Knees" on both side turns, hips and shoulder across the board, arms to the sides. Yet they are driving their knees quite differently from the other riders. Thanks for clarifying your intended meaning, to free both knees to be used to control the board. That's not what I had understood from reading the article, and I have read it a number of times. Jack, thanks for the articles you have written on Bomber. They have made me think a great deal about how I ride, and how others ride. They have helped me to understand what I see when I watch videos of riders whose styles I admire and want to emulate. In some of the online conversations we have been involved in recently, I have not focused as tightly on the ideas being debated as I should have. Instead some of my comments have been more personal. This was wrong. Please accept my apologies.
  9. Need help w/ toe-side wipeout (new Proteus on ice)

    Comapedrosa, I wouldn't advise you suddenly try and change your technique completely. Indeed, I more recommend you read the Separate Zee Knees article and appreciate the subtlety of the knee movements Jack talks about. My comment at the beginning of this thread where you had suggested on toeside you were concentrating your weight on the rear toe, and I suggested adjusting the balance so that the rear is still emphasised, but the front foot is doing a little more of the work in keeping the board on edge, that's where I suspect you will make the progress you seek. One of my discoveries over the years is that I have a collection of great boards, and gradually I learned to ride them. The boards, and my set-up remained the same, but my ability to get them to perform improved. Time spent on the slopes consciously working on technique pays off.
  10. Need help w/ toe-side wipeout (new Proteus on ice)

    I'm a bit like you Jim, an ex skier, who is primarily self taught as a carver, and who found a way of cleanly carving. I can carve the other way but it is not natural to me. I want to find and give voice to rest of us "misfits". Discovering that there were top level riders who ride this way gave me additional validation that the method works more generally than just me.
  11. Need help w/ toe-side wipeout (new Proteus on ice)

    Let me be explicit. The conventional approach, as explained by Jack in the "Separate Zee Knees" tech article is the way the vast majority of FIS alpine snowboard racers ride. The example video below shows the separated knees and the toeside turn being intiated by the rear knee being driven towards the snow, and the heel side turn being initiated by the front knee being driven towards the inside of the turn. On heelside many riders in this style end up with their pelvis aligned along the board length. What workshop7, jim_s, and I are identifying is that we ride in adifferent style, with a different way of thinking about how we use our bodies to produce a secure and accurate carve. This way is not talked about much here on Bomber. That's why jim_s assumed "this was some physical or mental oddity with me." Both styles work, and work well. In the video Vic Wild and Jonghyun Kim can be seen to ride the way we describe, with the knee on the outside of the turn driven across the line of the board. The other riders ride in the style Jack expounds.
  12. Need help w/ toe-side wipeout (new Proteus on ice)

    "Separate Zee Knees". by J Michaud We're talking about the other knee Jack.
  13. Need help w/ toe-side wipeout (new Proteus on ice)

    Workshop7, I'm with you! I ride like this all the time, and have done for the last 4 years. I describe it as "driving the knee on the outside of the turn towards the snow". If you're turning to the right, the left knee is on the outside and vice versa. The description/principle is then the same for toe & heel side turns. It is not talked about much on Bomber, as most riders emphasise the heel and toe across the board technique. Compared to the heel and toe, it feels like I ride more out of the side of my boots, and use fore and aft movement more for shock absorption The effect is not just to hold the edge angle along the length of the board. The knee movement brings the line of the pelvis and shoulders more across the line of the board, and creates angulation at the waist, making the upper body more upright, increasing downforce on the edge. The technique is used by a few at the highest level of alpine snowboard racing. Vic Wild, Ester Ledecka, and I think Roland Fischnaller can be seen to drive their knees in this way.
  14. Need help w/ toe-side wipeout (new Proteus on ice)

    Just make both feet do some of the work on both heel and toeside. The emphasis is more to the front heel on heelside and rear toes on toes side, but not to the exclusion of the other foot.
  15. Beginner question about boot flex

    Look out for an answer from Beckmann, he has a professional interest in making boots work for people.
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