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johnasmo

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johnasmo last won the day on April 30

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Details

  • Location
    Whitefish, MT
  • Home Mountain/Resort?
    Whitefish Mountain Resort (formerly Big Mountain), Montana
  • Occupation?
    Yes
  • Current Boards in your Quiver
    Coiler Angry 160<br />
    Coiler Nirvana Balanced 175<br />
    Coiler Nirvana Balanced 182<br />
    Coiler Nirvana Balanced Torsion+ 175<br />
    Coiler Monster 185<br />
    Coiler Nirvana Balanced XXX 170<br />
    Coiler Skinny 174<br />
    Coiler VSR 177
  • Current Boots Used?
    UPZ hard<br />
    Thirty-two soft
  • Current bindings and set-up?
    TD3 step-in & TD3 Sidewinders for hard booting<br />
    Lots of Flows for soft booting
  • Snowboarding since
    1999
  • Hardbooting since
    2005

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  1. 1999 VFR 800 2008 WR250R Lately prefer exploring back roads on the WR to street riding. Maybe an age thing, or just what's newer for me. 37 years of street, less than 10 on dirt.
  2. Quantity. Even on shitty days, it's not like there are lot of other things I'd rather be doing. Between hardboots, softboots, and skis, there's always some way to make the most of it. Except for freezing fog... rime ice... No footwear beats the rime ice.
  3. I haven't hit all in the state, but Snowbowl is low on my list from the few times I've been there. It's had to find good carving at Snowbowl. A lot of the runs have wonky fall lines; narrow or off camber. Like they wanted to save the best fall lines for off-piste terrain. Maybe the locals know the secrets to carving there, but I find Whitefish far superior for carving -- wide runs, consistent fall-line pitches, tons of grooming every night. And Snowbowl is the only place that refused me a refund after shutting down everything but their beginner tow rope right after I bought a ticket and hadn't even had time for one run. That's not right.
  4. Data. https://gothamist.com/news/jj-covid-vaccine-thwarts-delta-breakthrough-infections-large-south-african-trial-what-it-means-nyc
  5. Vacationed in Norway in 2019. Trondheim to the Lofoten Islands. It's like someone cut off the peaks of Glacier Park and dropped them seaside. Spectacular. But skiing near the Arctic Circle sounds dark. Don't write off Whitefish too fast. 2M can still do it here. Come try it on your way to the MCC.
  6. There already is an authorized non-mRNA vaccine. The J&J vaccine is a viral vector vaccine. It uses an altered adenovirus to deliver a piece of COVID-19 DNA to cells. Essentially, it infects cells as a virus would, but instead of causing the cells to replicate the virus, the DNA it carries only causes the cells to express a spike protein found on the outside of the COVID-19 virus. Same goal as the mRNA vaccines, they just use a newer, sexier way to instruct the cells to express a spike protein, by instructing your own DNA to manufacture the protein. Your immune system reacts to the foreign protein by manufacturing antibody proteins that bind onto it. When faced with the a real COVID-19 virus, antibody proteins bind to the spike protein which inhibits its ability to enter cells. That greatly slows the rate of infection. Antibody levels in the blood are not the whole story, there's also memory B and T cells that respond to the proteins and go after infected cells. CD4+ T cells help B cells to produce antibodies and help CD8+ T cells to kill virus-infected cells. They are the heroes of the story and where long-lasting immunity comes from. Vaccines are not virus condoms. You can still have cells infected when exposed. Vaccines simply teach the immune system how to fight the infection beforehand. Getting vaccinated is like learning to snowboarding before entering your first BX race. You're less likely to get seriously hurt by the experience. The vast majority of scientists and doctors feel that the vaccines are safe and effective. CDC scientists believe the current data shows that vaccine immunity is stronger and lasts longer than that of prior infection. It's like hiring a professional racing coach for your immune system instead of asking your skate-punk cousin to give you tips for that BX race. The truth is out there.
  7. Yeah, no. Not this time. The Flat Earthers are getting people killed this time. Maybe the analogy was too subtle...
  8. Lots of talk about sidecuts in this thread, but little about flex. If you're not ordering a custom board, you better pay more attention to flex and suggested rider weight. Sidecut is not like a dial where you can turn up and down turn size and speed; there's more to it than that. From my experience, flex is a stronger determinant of turn size and speed than sidecut. A stiff board with a tight sidecut will still run fast and big in soft snow. A soft board with a long sidecut will still run slow and tight in soft snow. It's only on icy or very firm hardpack where you will notice them fighting each other if they are not well matched to the speed you are trying to go. And in the end, flex will win out as the stronger determinant. It's natural to think of sidecut as what you choose first, as if it's driving the bus, but it's only one of several factors influencing the deformed shape of the board as it carves. It might be more useful to see sidecut as an output rather than an input. I.e. Something calculated to balance the flexing forces against the board's stiffness using the traction from penetration and compaction of the snow to achieve the flexed shape a given speed and turn size requires. Generally it will be true that stiff and straight will turn big and fast while soft and tight will turn slow and small, but there's a lot of leeway to be creative tuning the sidecut to taste since the stiffness is the stronger determinant of turn size for a given speed.
  9. Day 2 drop. A few more people on Saturday (see 3:55). Still, without a pond skim and live music, fewer than most years. I liked it better this way.
  10. Carving is my happy place.
  11. Traction where it's needed, without unnecessary rider isolation. Never rode one, but that's my guess. I kicked the bees nest with my first post on page one of this thread, where I summarized my design thinking as: "As I see it, sidecut shape, along with snow compaction or lack thereof, plays a role in influencing the shape it is being flexed into. The board's resistance to being flexed into this shape affects the pressure distribution along the base. How well the pressure distribution matches available friction along the edge affects edge hold. Available friction along the edge is a function of downforce and tilt. " We got sidetracked onto sidecut size issues, but let me take this opportunity to return to the issue of sidecut shapes. A board that turns most aggressively near the tip requires traction there to match. Tilted to 90 degrees, the lateral stiffness of the board would distribute the rider's down force (vertical pressure) all the way out there without loss. But at lesser tilt, say under 45 degrees, it's being distributed through a platform that has longitudinal flex. The tip can be flexed (and twisted) away, leaving the rider's vertical pressure closer to its input locations on the board -- where the rider's legs are attached. If there's not enough vertical pressure where the turning loads are greatest, the horizontal component of the centripetal forces of turning can overcome the available traction. Adding a structure between the rider and the board changes where the vertical pressure is applied to the board. By the looks of the Allflex designs, going from two contact points to three and widening the rider's platform by about 300mm. So it's a structure helping distribute the input of the riders weight closer to the tip and tail, which should be useful to increase traction at the tip and tail if that's there the board needs it. I believe most plates have a similar effect, but the brilliance of Allflex is that it doesn't pursue trying to isolate the board from the rider's input. The whole "letting the board flex naturally" idea. The rider is the pilot; their inputs should be useful to control the board, including its flex. A good plate should be giving them more control, not less. The Contra designs go a different way, a contrarian way. Instead of playing tricks (camber, plates, torsion) to redistribute traction to where your tires are, why not move your tires closer to where the traction naturally is? I.e. Use sidecut shape to affect where load is being borne against the snow to keep it closer to your legs. Plates also allow for tuning aspects of the board's stiffness and torsion to suit the rider, but at twice the cost of the boards I buy, there is an alternative -- find someone that can make you custom boards that cost less than these plates. It's quicker and easier to hop on a different board than to re-tune a plate throughout the day.
  12. Just my bad form. Hesitation to throw my body downhill early when not carrying enough speed off the last turn. Side effect of completing turns too far, taking too long in transition.
  13. @crackaddictis correct. I retract my statement that they are the same indicator geometrically because depth gives you a single number that is affected by both length and radius rather than just radius. It contains more information than just radius alone. But if you do have values for both radius and length, discard depth altogether, it does not add more information. If you know only radius and depth, but not length, use depth as the better predictor when comparing two boards. We usually know both length and radius, so this is somewhat academic. Even knowing length and radius you can't accurately predict turn size without knowing something about the stiffness of the board, but we lack a standard quantitative measure for that. As tilt increases, the influence of stiffness on turn shape surpasses that of sidecut radius. IMO, radius predicts how turn initiation feels, how quickly the board begins to steer underneath to keep you from falling into a turn as your roll it on edge, but flex quickly takes over the main role if the board can penetrate the surface. Even straight skies can turn in soft snow. GS-like stiffness produces a GS-like turn size, regardless of sidecut radius/depth. One of the Coiler prototypes we just tried at Big Sky bears this out. It paired a long effective with a short radius and a go-fast flex. It's was super fun, but you'd swear it was 3 meters straighter than it is. A previous iteration (same radius) that was kept softer rides like a slalom board.
  14. Yes, exactly. They explain how they don't want the ski to twist enough to change the direction of carving, but they acknowledge too much TR is a problem for how the ski tracks. If you don't allow some twist at the tip, all the forces must be dealt with longitudinally, and that adds more bounce to the nose. So TR is a variable to be used in tuning the front suspension. Too little is bad, but so is too much. I feel the right reason to use a plate should not be because the board is too harsh to ride otherwise. It should be to isolate the board from your bad behavior/inputs so it can win a race, not to isolate you from the board's bad behavior. If a board behaves badly, change it.
  15. Yeah, no. Sidecut depth is a geometric result of the radius. The sidecut depth can't be a better predictor of turn size than radius since it's the same predictor. It describes the same thing about the geometry of the sidecut. But is it a good predictor of turn side? Sidecut acts as a flex inducer, so it can't be viewed in isolation from stiffness when it comes to predicting turn size. At low tilt (hence low flex), it's the majority predictor; as tilt increases, stiffness has an increasing say in the turn size. James is a rock star strong rider. He's going to be high on edge and pushing the board to its flex limits. Depth to him probably acts more like a backstop to flex than a flex inducer. So he can look a depth and know something about how hard he can turn the board without being told what radius it is. With the variable sidecuts I design, I boil the radius down to a, "radial depth equivalent." The sidecut may be a long-tight-med-tight-long progression of some kind, but then how to describe it in terms people can extrapolate from prior experience? By describing it relative to a radial sidecut. But rather than average the radii in the progression, I beleive (like James) that the best way is to describe it in terms of the resulting sidecut depth. So when you get a Contra 11.5m sidecut, the radius changes every inch along the effective edge, but the depth ends up matching that of a radial 11.5m.
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