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Showing content with the highest reputation since 04/30/2020 in all areas

  1. 11 points
    I asked @Bruce Varsava at Coiler to simply tell me more about these new "Contra" shapes. Well if you've met Bruce you know you're gonna get everything you ask for and then some! One thing led to another and now I have taken delivery of two demo units to test in December. A 174, 20.5cm, avg 12.5m, and a 166, 20cm, avg 10.5m. I'll compare to my custom Kessler 175/20.5/10-14, and my stock Kessler 168/20/8-12. Those Contra sidecut numbers need explanation. Here was the gist of the email thread with Bruce, posting with his permission: " The Contra was designed from scratch as a board to handle a wide range of snow that we get from climate issues. It actually uses a lot of designs from previous freecarve models but puts them together in a unique package. Softer mid and tail allow for excellent ice grip and control on steeps. Bit stiffer nose punches through crud nicely. Sidecuts are different - not nearly as nose-grabby, and with less bouncing. Turns are altered more through angulation than fore/aft movement although a bit of that still helps. Kinda like but not quite an elliptical sidecut. Been working on them for about a year with help from the Montucky bros. Testing has confirmed that they work extremely well. I was out on a few occasions in rather shitty stuff and didn't realize how bad it was until I got on a Nirvana which is not too bad of a board but these surpass them quite easily especially in less than ideal snow. I was definitely bouncing around more on the Nirvana. . The Contra uses a mid tight sidecut similar to an elliptical but we have extra goodies thrown in here and there. @johnasmo is the real genius behind these sidecuts and has a system in place which allows for super consistent design and therefore consistent feel throughout the entire line. The Contra really gives the feeling that all parts are working in complete unison. First ride on one I immediately noticed it had a clean raceboard feel in a board that turns tight and biggest bonus is it works well in a stupid wide range of snow. I have had a few instances where I started a day on a Contra then went back to a traditional board and could not believe how shitty the conditions were. Get this feedback from a lot of riders. They just eat up the crappy snow we get all the time now. Grip is stupid high also as they seem to just hang onto almost anything. I bet you wonder how this all started (-: Each part of the Contra I have done before although the new sidecuts are a lot more involved. Never did all these things in one board so that was the goal to blend it all together. After seeing that a few other builders were designing boards with a mid tight sidecut and getting good results, I figured it was time to get to work on the freecarve boards. Last 4 seasons I was actually working on softboot and BX stuff which really required me to up the game in regards to my design system as softy boards are actually a bit more complicated to design. Softies are a great success story for me, sold very few raceboards last season and a lot of softboot boards so the design time was well spent. Now that the softy program is up to date, I used the new design system to work on the Contra and it took all of three prototypes to get a really nice board. I had to experiment with different ways to control stiffness along with the type of stiffness and when you get it right, it is exceptionally good. Reality is most guys need the easy rider boards which the Contra excels at. Not to say it isn't great for more skilled riders as it is, especially when it allows you to ride hard in sub ideal conditions. Contra sidecuts are a bit more involved so we just use one radius to describe them. However, the actual number to suit your needs has to be a bit tighter than what we are used to referencing from previous boards. The reason is that they like to stretch a turn better than tightening one so you simply get a tighter sidecut which will happily go faster and be plenty stable. I would say on average you go with .5 to 1m tighter than what you would normally want from any of my previous designs. Most popular has been a 12.5m so I'll go with that for the 174 demo. The 166 is a real sweet board with the 10.5m. One of my favorites! Some other exciting news as I just secured an autoclave which will allow me to use the hi end pre-preg carbon/glass similar to what a certain European manufacturer who makes a lot of black boards uses (-: An autoclave is a heat/pressure vessel which is what they use to press their boards. Unfortunately, the Covid issues have slowed this project down as I have not even been able to pick up the Autoclave yet. My only problem is I am old! Elbow just gave out yesterday and I'm starting to sound like a broken record complaining about injures but I'm a few weeks away from 59 yrs old and it is the reality of a lot of hard mileage on my joints. Held up better than hoped for last season just finished which was a surprise as I did about 95 boards since Sept. Plan is to do about 80 boards next season as I am supposed the be off now till Sept. With the pandemic on the go, no golf so I have been busy making up a few stock Contra's which will be available in fall. As of writing this I already have about 60 of the 80 orders for next season but won't be starting those till fall. Can I golf now, puuuulllleeeez! BV "
  2. 9 points
    New Coiler quiver. 162 x 19.5 9m SCR Contra 178 x 20.5 11m SCR Contra 169 x 27.5 8/10/9 SCR BXFR The 162 graphic is a tribute to my favorite snowboard graphic ever, the mid '90s Rossignol Throttle.
  3. 8 points
    Finally adding my 2 cents to the thread... I think the future of recreational alpine is as a progression from softboot carving. The on-ramps for new alpine riders are either racing or softboot carving, and racing doesn't have the scale to even replace attrition. Youth racing in most locations is dominated by skiing programs. Look for all the "XXX ski team" jackets on any weekend. If your community has any snowboard racing, it's most likely the occasional BX or banked slolom competition. There might be a snowboard "freestyle team" to put kids into, but the number of communities that offer *any* snowboard racing where alpine gear has an advantage is just too small to grow the sport. For equipment niches to flourish or at least survive, customers have to want it because it offers some advantage over other available equipment. There has to be a reason to progress into that equipment, be it specialized auto, motorcycle, biking, boating, ... or skiing and snowboarding. So what does alpine snowboarding offer a young person that's not interested in PGS or GS snowboard races? Carving progression. Some softboot snowboarders will find that they like the feeling of carving turns. Some will throw money at wider boards and try to do it duck stance. Some will learn that narrower boards with forward binding angles make it easier and work better for them. Some of us here just like hardboots over softboots, but IMHO, most of us have both and use hardboots to enable higher binding angles on narrower boards. It's about the boards and the carving progression they allow, not the choice of footwear. We choose plates and hardboots because they are the board interface that works best at high angles. Softboot carving *is* a growing niche within snowboarding. That's the future market for apline gear, the softboot carvers that want to progress to narrower boards when their progression on wide boards plateaus. The success of softboot carving is not the death of alpine. I think it's the feeder to maintain a market for alpine gear. Yes, when aging alpine riders "progress" to softboot carving, it looks like we're losing ground. But based on volume, there's more potential for young softboot carvers to come the other way because that's where the love of the carve is growing new participants. This forum is for alpine enthusiasts, but clearly our own community illustrates the synergy and overlap. Alpine is a niche in a *growing* carving community. The growth of the carving community at large is the future of alpine.
  4. 8 points
    I picked up a DJI Mavic Mini Drone a couple weeks ago and have been busy learning the best uses for it. I was flying it toward a covered bridge in southern Vermont when a bald eagle flew under the drone. I did a couple dozen screenshots from the video and created this composite shot.
  5. 6 points
    More Google ad revenue for USSRT - this time team manager Lynn Ott recommended junior team member Iris Pflum for our latest $100 direct athlete donation, based on her break-out season this winter. Congrats Iris! Thanks everyone for your support. https://ussrt.org/jrteam/5504/
  6. 5 points
    Nothing radical with regard to setback and taper. Each sidecut profile is adjusted for length, radius, and setback. Taper is calculated to bring the waist to near or just before the setback. The tightest radi are still in front of and behind the inserts. The location scaled by board length *and* target radius to keep longer SCR from initiating too slow. Setback is 40 on 170+ lengths, 35 in the upper 160's, 30 or 25 if getting into BX sizes. Insert separation is 500 mm for alpine, 560 mm for BX. There are Contra BX sidecuts too, but none were built last season. They push out the radius tightness even on lower SCR as compensation for lower generally low angulation. Stick to normal Contra if the goal is EC carving. Anyway, I'd start centered and see how it goes. If you normally shift your stance fore or aft because you like to drive more with your front or rear foot, try starting centered and being more neutral at first just to see. The tightest radi are still in front of your front toes and behind your rear heel, so fore/aft pressuring still has an effect, but focus your attention (direct the flex) closer to your feet than before. I'm centered on center inserts in front, and using center inserts but shifted binding disk back one hole for a 20 inch stance. On my older Coilers I tended to shift forward. I don't know if my change is a reaction to the board or I'm evolving a more neutral stance over time on all boards. I was adjusting cant/lift last season across all boards and I ended up more centered on all of them. What I posted earlier about shifting pressure may be misleading: It's not so much about shifting pressure from tip/tail to center, but preventing it from being shifted too much away from center towards tip/tail as you increase edge angle. When the board can't cut very far into an icy surface, a center stiff board risks unweighting the center as you go higher on edge; the stiffness of the board prevents the center from being flexed out to bear much load, concentrating downforce at the ends of the tip/tail. In those conditions, a tight-long-tight sidecut shifts too much load bearing pressure from the center to the ends. Contra flex/sidecut are trying to keep the low angle and high angle pressure distribution more consistent. Not necessarily centered, but more consistent over edge angle, which may "feel" more centered compared to other VSR boards. What you should (I hope) feel with the Contra is that instead of attacking the hill with the tip of the board, you are attacking it with the area in front of your boot and riding out the turn with good center traction. The feedback from the board should lead to a more centered and neutral stance than other boards. Design intent and design reality don't always match. I feel like its working, but hope to get more long-term feedback from other owners on the forum comparing them to their other boards in various conditions. Sample size is the number of Contras Bruce built last season. Bruce, Dave R., and myself are only a sample of three.
  7. 5 points
    I promised yesterday to share some beta on the K168. Nothing secret, just what can be observed by handling one with feeler gauges and a straight edge. My analysis says it's a 8-12-10 VSR, where the 12 is reached just before the rear inserts, 1550 mm effective edge. It starts straighter at the very tip of the effective, but drops below 8 near the saddle between the camber/rocker. Eight is a fair average over the first 200 mm. Same at the rear, but the min radius there hits a bit more inboard of tail rocker. Ten is a fair average for the last 250 mm. The tip and tail engagement is done by rolling onto the rocker profile, not relying on sidecut induced flex, so tip and tail blending toward straight inside the effective is to be expected. The remaining 1100 mm is a where one would expect it to be two "clothoid" curves, one from 8 to 12, and one from 12 to 10. But that's not exactly what I found. A clothoid curve is one where the curvature (1/R) is changing at a constant rate. The rate of change of curvature I observe is not constant. It is changing constantly, but interestingly, that rate at which is is changing is constant. So it's the rate of change of rate of change that appears to be constant during these transitions. The graph of curvature expresses itself as a clothoid curve, making the actual sidecut curve a clothoid anti-derivative curve. I could share all the graphs of this, but I can't upload any more attachments to my account. You'll have to visualize. What you should see if imagining a graph of radius over the length of the board is a smooth curve, no abrupt changes to slope. Like a throwing a ball up from 8 m and letting gravity slow it down to zero at 12 m and start dropping back to 10 m. The rate of a acceleration actually bumps a bit higher at the rear inserts, but you get the picture. Core profile is interesting too. A micrometer shows it's very much table topped between the inserts. Way more than I was expecting. More than Bruce is doing on the Contras. I speculate that this might be a characteristic of the K168 that is not as pronounced on other sizes. Could be part of what makes it good for free carving. Someone with more sizes would have to take a micrometer to them and report back. The K168 and Contra are different. What the K168 and Contra have in common is that the radius changes every inch, and that the rate of change is changing smoothly throughout. I can model them both with the same spreadsheet math just by changing up position and coefficients of control points. So if you want G-codes for milling K168 knock offs in new sizes, I have you covered. Where they differ in appearance is that the "flying W" of the K168 has its low points out at the tip and tail and the Contra brings them closer to the inserts.
  8. 5 points
    Cracked-open the latest issue of Depression Quarterly, and to my surprise... hardboots! Thought that was kind of neat.
  9. 5 points
    I have no idea what the side cut radius is. Waist is 19.5. I bought this board off eBay about 5 years ago. I never used it. It was purchased for the graphic. It's in very good condition. Some light surface rust on the edges. Lots of life left. Please be honest. I want this to go to a kid who wants a carving board and doesn't have one. Buyer pays actual shipping. Price for the board is $0.00.
  10. 4 points
    New Alpine rider here: @johnasmo hit the nail on the head. Progression from soft boots to hard boots for me was indeed a natural evolution from soft boot carving inefficiencies. The body position for heel-side turns just does not feel like a position where I can drive power into the edge. Toe-side turns on soft boot stance angles feel better, but there are disadvantages to these too. Another reason for the switch was medical. Any hard toe-side carve on non-perfect groomers will blow out my ankles when I hit imperfections on the slope. It does not seem to matter what boots, bindings, or boot modifications I make, it happens. I lost may weeks of riding due to recovery from this. When I get to the point where the boots feel stiff enough to support my ankle, they are already as stiff as a hard boot. Despite what my local hill tries to advertise, perfect grooming does not exist. Carving progression for me was the desire to experience G-forces akin to roller coasters and race cars. Since progressing with soft boot carving, I reached a wall where I felt like I was not progressing anymore toward my goal. It frustrated me enough to really think about my equipment and technique. Eventually, I finally came to the realization: soft boots are soft, and they are designed to be soft. Some people can make soft boots work for them for carving. I could not. Since switching to hard boots, my progression is on the right track again after only 5 days on snow. I really do think that the soft boot carving trend will increase the sales of Alpine gear for those with the desire to push the limits and achieve their goals. Cheers, and stay safe!
  11. 4 points
    @johnasmo doing what he does so smoothly.
  12. 4 points
    I think we need a mountain biking thread. It doesn’t fit in the summer carving but it’s the only thing keeping me sane (and that’sa stretch in normal times) Post your mtb stuff! Maybe we can petition @Jack M for a forum Below: Soapstone prairie in NoCo on the WY border. Nobody around four miles. One of my fav places to unplug.
  13. 4 points
    Yup. Yup again. I'm a metal fan. So far, I've not ridden anything that remains as composed and predictable as edge hold slips and regains as metal construction. No muss, no fuss; just keep calm and carve on. It's fair to say the Contra was inspired by Mark's boards, but they're not metal knock offs. It was from trying to sort out what made Mark's edge hold behave differently that inspired applying some contrarian thinking to a Bruce build. There's no asymmetry of sidecuts or difference in toe/heel offsets or any of that, unless you ask for it, but allowing for more center flex and switching to a long-short-long VSR was done in pursuit of better edge hold on ice. Mark's boards proved to me that good edge hold wasn't from metal. Metal was only contributing control and composure to otherwise chaotic, chattery situations. The edge hold had to be from something else, like better distribution of turning loads against the available friction. So back to flex and sidecut experiments. This is so true. Alpine might not be thriving and growing in numbers, but you wouldn't know it from the gear. It's a really good time to be buying alpine gear because of the personal attention we get from quality builders. Bruce was already dabbling with table-topping the core profiles of BX boards at the same time I wanted exactly that as well as a contrarian sidecut on an Alpine. After a bit of back and forth over numbers, he was willing to share his milling CNC programs with me so I could mod them to my liking. Can you imagine that happening at a big batch board company? Being in alpine today is like being on a factory race team getting custom gear, even if you (like me) have never turned a gate in your life. And it's not just Bruce. We have Mark (Thirst), Rob Lu (Winterstick), Sean (Donek), Jasey-Jay (JJSB). Lot of personal attention available from world class builders right here in North America. As for K168 comparisons -- hearing so much about them, I acquired a used specimen from another member here right *after* the pandemic shutdown. Boot packed it up for a few tries on days old groom. Not a true test, but enough to tell it was unflappably composed as expected. Behavior consistent with a tight-long progression. Confirmed later by at-home measurements to be a 8-12-10 VSR. I'll save details for tomorrow. Spoiler alert: "Clothoid my ass."
  14. 4 points
    I just ordered a Virus Mono. I told him that I want a Mono that carves like my skis. Frank said it will be Super Carvy, it will have Carbon and the same base as his competition boards. He said in an email... "it will be super fast and I will need fireproof underwear to ride it !" Sounds perfect, to me...
  15. 4 points
    @kiteparsons enjoying the wide open spaces MCC 2020
  16. 4 points
    Despite the pandemic. Most of us will look back and realize how much fun we had with our families. Social distancing is easy on a mtn bike. Just take it easy. My son and I put in 10 to 20 km every other evening in the local trails. His improvemnt in bike handling and reading the trails has been amazing...
  17. 4 points
    Lockdown month 3 in Norcal and slowly turning the backyard into a bike park...
  18. 4 points
    @Lurch @lowrider Currently entry is only for NZ citizens and permanent residents. Note that quite a number of wealthy Americans had gained permanent residency in NZ well prior to the Covid crisis, and are eligible to take refuge here and enjoy the benefits of our "socialist" society including our universal free healthcare. e.g. Peter Thiel of PayPal. Make of that what you will, I make no further comment. However, anyone arriving for the last month or more has been required to enter government controlled isolation hotels for 14 days and remain well before being allowed into the country as a whole and entering their lockdown "bubble". My wife went through this process on her return from the UK in Mid April. There is talk of a time in maybe July or later of allowing visitors from Australia in without the quarantine. However, both NZ & Aust. would need to be pretty sure that the virus is essentially eradicated within each country, and that any new cases are only those identified in returning international arrivals during border quarantine periods. For anyone wanting to visit from a country with an active Covid problem, for the foreseeable future you don't have a snowflake's chance in Hell of being allowed in! The national airlines of both countries (Air NZ, QANTAS) are now essentially only internal passenger airlines, and international freight airlines. NZ tourist business before this all blew up was approx. 55-60% NZers seeing their own country. Some tourist businesses will survive but many will fail. Our economy has taken a major hit, but our severe lockdown period has only been about 6-7 weeks, and it seems reasonable to hope that we might actually have the virus under control here now. @philw As I said in an earlier post, I hoped we might succeed in controlling the virus and minimise our number of dead because of a number of factors in NZ's favour. Jacinda Ardern is just the icing on our cake. 1/ Clear physical border 2/ Trace and isolate all identifiable close contacts of cases from Case No 1. 3/ Highest level total society lockdown from the time that new case numbers started to accelerate. 3/ Universal free healthcare: No one here had to ask how it would all be paid for just before they were intubated. 4/ A moderately funded system of income support for those in need, that has been effectively ramped up to deal with the extra load placed on it (one of my daughters has been working at the upper levels of the government ministry that manages this). 5/ A society based on the "myth" of "a fair go for all", that has created a society where people are prepared to consider others and there is a real sense of "a team of 5 million Kiwis". 6/ A non-corrupt goverment that is not massively beholden to sector interests, proportionally represents all political views in our society, has worked in a consensus fashion to govern since the mid 1990's with both of our major parties in power during this period, and enjoys high levels of trust from our population. 7/ An ethical and empathic leader, with excellent communication skills, who has taken heed of the public health experts in the Ministry of Health advising her, willing to "go early and hard". The results, SO FAR, are really clear. Public here starting to get a little complacent, but in the places of power and healthcare no one is ruling out that the virus may rise again. Today, our 3rd day in the last 10 where there have been NO new cases diagnosed in NZ.
  19. 4 points
    NZ signalled a move to a lower level of social restriction today that will allow travel within the country. Single digit new case diagnoses for the last 10 days or so, with all new cases in isolation prior to diagnosis because of links to prior cases. Some of these cases have been completely without symptoms and only detected by routine testing prior to return to work. But, if we can stay at this level or lower, in 3 months exactly I will be in Central Otago with 4 boards and 3 weeks to carve them. Fingers crossed.
  20. 4 points
    I don't think the boots would fit you Andre, he's running like 26 mondo quadruple extra wide. I think his mom bound his feet when he was a baby...
  21. 3 points
    Seems like a lot or most of the comments here, never reflect the riding conditions, that they are Riding On...I believe that is more than critical, when we talk about what works or doesn't work...It is a fact that Race courses are different than your average area groom for one thing...here in Colorado in general, it is Hero snow conditions, that means the equipment that works for Carving here, is not what Jack and others are typically on Back East, while, up north at Turner, as an example, it can be both with its Elevation as it is...would appreciate folks adding, what they are typically riding on, when saying what and what not works for them equipment wise...Thanks
  22. 3 points
    At the beginning of the carving era, ski manufacturers were supposed to have borrowed carving snowboard designs to begin experimenting with carving skis. Starting to wonder whether the transfer of knowledge will happen in the same direction again, or whether this concept of analysing and experimenting with edge load distribution has already been developed in racing skis and/or filtered down to the carving skis available to the public. Google searching on "ski design flex torsional resistance sidecut" turned up lots of commercial sites but also these https://www.researchgate.net/publication/268279279_Effects_of_ski_stiffness_on_ski_performance https://mafiadoc.com/sidecut-radius-and-kinetic-energy-equipment-semantic-scholar_59d90bfc1723dd30eee25df9.html And this discussion https://blisterreview.com/gear-reviews/ski-nerdery-running-length-edge-hold threw up this contribution "We’ve got some seriously interesting stuff above, and I thought it worthwhile adding a few cents of my own. I’m a ski design engineer for K2 and LINE – I don’t want to suggest that I’m THE authority on all things related to edge hold, but I have had the opportunity to measure (many) skis in ways that most people can’t, and a large part of my job deals with improving – or at least tailoring – the amount of edge hold a ski has. Before getting too deep, I think it’s worth mentioning that edge hold, unlike the flex or rocker/baseline profile of a ski is impossible to measure. It’s a feel. A skier will notice when a ski has better edge hold than another, but those observations are extremely hard to qualify and quantify. You can say one ski has better edge hold than another, but beyond that, meaningful data gets pretty sparse. Camber, rocker (I’ll dive a little deeper here later on), flex profile and sidecut profile all have profound impacts on edge hold. All of those variables can be wrapped up into a single measurement – pressure distribution. A ski with great edge hold has a pretty distinct pressure distribution signature, and one that doesn’t change drastically with increased edge angle. Intuitively, one would think that a uniform pressure distribution would mean that a ski has better edge hold – that’s not the case. Skis with good edge hold characteristics have three distinct areas of high pressure – one in the tip, one underfoot, and one in the tail. The effects that rocker, camber, flex profile and sidecut profile have on this pressure distribution is how and why they affect the ski’s edge hold. In general, the more balanced the flex profile (the stiffer the tips and tails, and particularly the tip, are in comparison to the midbody of the ski), the better pressure will be distributed to the tips and tails of the ski, and the better the ski will be able to maintain an edge. Adding camber to a ski has a very similar effect to the pressure distribution – you get more pronounced ‘spikes’ in the pressure distribution at the tip and tail. The way that sidecut affects edge hold is fairly complicated and nuanced, but basically the sidecut profile determines how the ski bends, and how the pressure distribution changes with increased edge angle. Obviously, a ski with a lower sidecut radius will bend more than a ski with a large sidecut radius. If the transitions from a small sidecut radius to a large sidecut radius are abrupt, the ski will want to bend a great deal in one location, and very little in another, resulting in poor edge hold. Torsional rigidity is interesting, mostly because it is assumed that the more torsional stiffness a ski has, the better edge hold it has. There is some truth to that, but increasing a ski’s torsional stiffness beyond a certain point has a pronounced negative effect on the edge hold. The torsional stiffness of the ski keeps the entire ski at the same(ish) edge angle, and therefore forces the ski to bend in the same(ish) arc. The more torsionally rigid a ski is, the better that that same edge angle is maintained throughout the ski. However, where a very torsionally stiff ski can be problematic for edge hold is on surfaces that are not perfectly planar – really, all ski surfaces. If the ski hits a small bump while on edge, that bump needs to be absorbed one of two ways – it either twists the ski, or it bends the ski (it’s really a combination of the two, but you get the idea). Skis with soft torsional stiffnesses will tend to twist more than bend, allowing full edge contact to be maintained (the problem with skis with low torsional stiffnesses is that the edge angle is poorly maintained throughout the running surface of the ski). Skis with high torsional stiffnesses will force the skis to bend, usually pulling part of the edge off the snow with it, and reducing edge contact and therefore edge hold. All this is to say that there is a sweet spot of torsional stiffness that will keep a fairly constant edge angle throughout the ski, but allow enough deflection in certain cases to maintain edge contact. The reason most rockered skis have worse edge contact than a fully cambered ski on hard snow is that the rockered sections of the ski are – for all intents and purposes – large cantilevered beams. The vibration characteristics of these beams tend to have low frequencies and high amplitides – tip flap/flop. These vibrations, or flapping, pulls the ski off the snow, reduces edge contact, drastically changes the pressure distribution of the ski, and reduces edge hold. This is why a 165cm slalom ski has excellent edge hold while a 190 heavily rockered ski (but with a similar amount of effective edge as the slalom ski) has very poor edge hold. The overall shape of the rocker profile, as well as the flex pattern in the rockered section can be tailored to reduce these effects, but not eliminate them." This Head ski video talks about the same interaction between flex and torsional resistance. _________________________________________________________________ PS: Pleased to see Sean Martin's videos on the physics of a snowboard turn have made Wikipedia as an external link on the "Ski geometry" page. https://en.wikipedia.org/wiki/Ski_geometry
  23. 3 points
    That's an apt description -- a tight-long-med VSR stuck between longer radi tip and tail. A plot of curve's curvature over length looks like a flying W. Such a graph looks more like a new camber profile than a sidecut, but that's really plotting the derivative of the curve, not the curve itself. Agree and disagree here. Core flex is #1. But sidecut profile is a strong lever to control the shape your pushing the board to form, which is a lever to control distribution of load. There's the shape the board wants to make based on deforming the sidecut curve to meet a plane, then there's the shape the core flex alone would want to form just bearing the load, then there's the shape of the carve in the snow itself. The shape of the carve in the snow, oscillating between smoothly decreasing and increasing radius curves, is the shape the board is forced into. The difference between that shape and the other two affects how much load different parts of the board are carrying to force it into that shape. So tuning the curvature of the edge is a way of tuning where the forces flexing the core are distributed along the edge. Whether turning a car or motorcycle on a road, or a snowboard carving snow, staying hooked up requires not exceeding the friction available where the rubber meets the road, so to speak. For the snowbaord, that means distributing the flexing loads along the edge to not exceed the friction available at those points. Which is uneven, as it is affected by the vertical downforce at each point and trench depth behind different parts of board. We're playing with both core *and* sidecut design variables to distribute *both* flexing load and downforce, trying to match to available friction on icy runs. Results have been promising so far. I'll share more later, but now I want to go skin what's left of our mountain. Day 150. Might be last day, as no longer contiguous snow this week and the boot pack is getting longer each day.
  24. 3 points
    We will go be going next year. I’m thinking we will drive our Truck Camper our there. Count Katie and I in on the shenanigans.
  25. 3 points
    Lifts, lodging, food beverage and gas, I'd say 750 to 950 depending on how big you go and how many days you spend there. The LCI boneheads rent a house that works out to about 40 bucks a night per person with 5 people for 5 nights. Mario
  26. 3 points
    @Corey as captured during the “how many turns can you make” game at the 2020 MCC
  27. 3 points
    ^^^^^^^This.... When ordering a Contra Bruce will tell you to go with a smaller SCR for a given board length. I also just like small SCRs. Either way, I simply do what Bruce tells me to do.
  28. 3 points
    There are tons of really good single track trails all around Kongsberg, within riding distance from my pretty much anybody’s house. Due to dry/ warm weather and a pretty crappy winter, the trail biking season started nearly two months early. And one of the best things... the following pictures were taken at around 19:40 tonight... you can just ride late into the night.
  29. 3 points
    howdy total package!... minori… and watching rama live streaming and answering live chat with miho in the background...
  30. 3 points
    Stoked!! Surfin up at the Bells this morning, Chilly and Flat, but still Fun...
  31. 3 points
    This is day before yesterday, not me
  32. 3 points
    Uh-oh, seems like people are out of shows to binge watch and champing at the bit to watch some vintage Skwal action
  33. 3 points
    Miss you all. Maybe we get together for a Summer camping weekend? Maybe sample some more of Mario’s special BBQ... we hope you and yours all are doing well!
  34. 2 points
    Squirrel! https://www.youtube.com/watch?v=L8j6INdZcvY
  35. 2 points
    Pulled the trigger yesterday on Turbo Levo Comp. Got the last M in California it seems, none available anywhere. Amazing game changer. Rode over 3 hours yesterday and can't wait to get back on it this morning. Probably start riding twice a day now.
  36. 2 points
    It's all your fault! You made me do it!! This thread! (and the crazy good deals Commencal has on used bikes) Trail report to follow but in the mean time... It's your fault! Check out the deals here: https://www.commencalusa.com/PBSCCatalog.asp?ActionID=67174912&PBCATID=3785964 And I did look at what Canondale, Giant, Scott, Devinci, Haibike, and Canyon have in terms of ebikes. I think for the price you can't beat Commencal but if you are willing to pay around $7k then the Specialized Levo and Santa Cruz Heckler seem to be the top offerings IMHO.
  37. 2 points
    I made it up for one final day today. They were practicing social distancing so no one ran over the tail of my board.
  38. 2 points
    Wait, you’re telling me I “have to visualize a clothoid anti-derivative curve?!?” I have enough people at home whose job is to make me feel stupid, I’m not sure I should have to pay for the privilege here...
  39. 2 points
    Oh I have Trestle, Keystone and Steamboat. All a couple of hours away. Tried it. Did not like it! Don't get me wrong, taking the magic flying couch up to the top is really easy. It's the downhill that scared me! I'd much rather pedal my way around a green trail and explore new areas than bomb down sharp rock gardens wearing body armor. I get why it's fun but it's not my cup of tea. To me there's something amazing in just getting out and being alone in the "wilderness". I like the touring aspect of it.
  40. 2 points
    That run pretty much summed up my MCC experience. Endless flow, no danger from others, great people, and great snow. The zenith of alpine riding.
  41. 2 points
    Im pretty lucky I have some fairly nice natural trail riding not to far from my house albeit after a 30min near 950foot vertical climb. Bike is a little inapropriate and old school Commencal meta 4x 26inch 130mm fork 100mm out back its an over excited puppy of a bike to ride, not the best climber but boy are descents fun
  42. 2 points
    Nice, thanks to all involved! It's funny how smooth that looks considering how freaking hard I was working to get those turns. Board is a Donek MK variation, for those who are curious. That was a flat run!
  43. 2 points
    howdy here is rider momo on an sg soul... rider gear and set-up at the end of vid...
  44. 2 points
    well, Lateral flex for one and since this was in reference to SB stiffness...by locking the highback and using different strap materials and tightness adjustment, a 3 strap can have a huge amount of lateral flex but a great increase in forward flex help, on those frontside ( Toe side for You Neil ) Turns... I have hundreds of Days on a pair and they don't break down like the Malamutes and all the other so called STIFF SB over time...that is what I am referring to here, not attacking HB OK...I have a HB set up Now and I don't like it...that's the thing here, different people, different opinions.. and by the way...I don't use HB for Skating or Surfing either...
  45. 2 points
    I ‘ll skip the camping thing, but i could be coerced into doing some bbq. Lets see how this all shakes out. Speaking of bbq: 2 racks of ribs on now
  46. 2 points
  47. 2 points
    Best investment, that you will never regret, is definitely more snowboards.
  48. 2 points
    Look, we know that you feel the need to share your political views with everyone. That's fine, but not here. It's the rules. Someone on Reddit.com would probably love to hear and/or debate your ideas. Politics tend to cause heated debates that divide communities, which is the last thing our tiny niche sport needs. If you don't like these rules, start your own forum with rules you like.
  49. 2 points
  50. 2 points
    @RCrobar You should join us! It was a ton of fun and such relaxed carving! I can only imagine that good banks requires a combination of, tons of snow, lots of snowmaking equipment, lots of groomer time or lots of pre-season dozer work, thus lots of money. Money is something this event and Turner Mtn do not have much of. So this will not likely be an option. It does look like a giggle fest! I would love to get a chance to ride something like that, varied terrain makes carving much more interesting. We had some rather funky grooming on day 1 and 2 on 1 section of off camber pitch between the bottom of the bowl and the midway area on main last year, there were steps on the right side, groomer path was sloping with a ramp (about a foot rise) between each pass. It was super fun to carve and very challenging to do smoothly. I know a lot of people would disagree with me about that section, but what a fun set of features to play with!


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