SunSurfer

Output from Fin's cut through boot project linked https://imgur.com/a/o6MDVW0 (9 images)

The data we lack is the internal volume of the different brands and shell sizes. Also the means to match the 3D foot model to the shell. Ideally other ski & snowboard boot manufacturers would licence the app just as Dodge has done.

@daveo Dodge Skiboots already use this app on their website to do exactly that.

@1xsculler That's the received wisdom, that riders are best to have a mondo size boot that matches their rounded down foot length in cm. Hence my "go figure" comment in my original post. What I've got gives me great heel hold down, and plenty of room for my forefoot to move as I modulate the pressure under the sole of my foot.

Nice shooting too. Sharp focus and pretty steady. Loved seeing the flexing tip of your Kessler, @polaris.

https://imgur.com/a/Ed4aOZh Happy in UPZ RC10 324mm shell (mondo 29-29.5) Link has the screenshots from my Android phone of the 3D models of my feet and the measurements screen. On phone screen the 3D models are 360 degree viewable. The sole view seemed to give the most information on foot shape for a single view. Took a couple more repeat measurements to see how reproducible the measurements were. Right foot was reproduced with +/- 3mm consistency. On the subsequent 2 runs through Left foot lost 20mm length and other measurements in proportion. Run 2 app noted Left foot reproduced "with problems", 3rd run no such message. Manually measuring Right foot length today, steel ruler end against skirting board & rear most protruberance of foot against skirting board, length = 283mm, ball width 111mm (little toe just touching skirting board, no sense of pressure) So appears to measure accurately most of the time. I suspect that its' value lies in showing relative foot shapes and volumes when someone says a particular boot shell suits their feet.

Found a free high tech solution to this problem. Available for Android & iOS. https://antropometria.ibv.org/en/3d-avatar-feet-en/ Just used the app to 3D model and measure my own feet. The limited use free app also gives measurements for foot length, ball width, ball girth and Instep girth. If I hadn't run out of attachment room I'd post my images and the fact that my UPZ RC10s shell fit this shape well. What intrigued me was that the app had my feet at 280mm +/- 1mm length. I've always found 28 mondo shells too small and found comfort only in 29 mondo. Go figure. Left Length: 279.0 (all in mm) Ball Girth: 275.6 Ball Width: 113.0 Instep Girth: 271.7 Right Length: 280.1 Ball Girth: 268.4 Ball Width: 112.0 Instep Girth: 267.5

Only royal (real) tennis.

Sounds like a need for some recommendations for suitable freeware tools for the Apple world from, and there must be some, people here who have solved this problem already.

Great raw footage. Shooting vids of your riding buddies is such a good thing to be able to do. Would be even better with some form of stabilisation run over it. Freeware options include http://www.virtualdub.org/download.html https://www.guthspot.se/video/deshaker.htm I use this software myself. Lots of online resources to give you tips to get good results with VirtualDub & the Deshaker plugin, including YouTube vids.

I "found my feet" in @ Cardrona in August 2018 and embedded what I'd learned in Aspen in February 2019. A Kessler 162 works pretty well in a NASTAR course. http://skiracing.nastar.com/index.jsp?pagename=results&page=comp&compid=830957 I also learned that there are some Thirsts that even alcohol cannot quench.

As I watched these I was struck by how the racers generally are much less in the - style on heelsides than was the case a few years back. Is racing technique evolving?

CASI Softboot Instruction/Instructors Playlists from CASIACMS YouTube Channel Level 1: Level 2: Level 3: CASI Tips (English et Francais): PSIA-AASI How to Snowboard Playlist

Trying to bring together a YouTube playlist with useful instruction videos. "Instruction Videos - Snowboard Carving" is one of the series of playlists on my YouTube channel. https://www.youtube.com/channel/UCbFkVPcmsd5oH-Oe0s3LEMw/playlists Includes some SES Clinic videos, Marc Cirigliano's race technique series, and one of the Russian extreme carving tutorials. Suggestions of videos you've found useful gratefully received. I will add suitable ones to the playlist. Edit: After suggestions both as PMs and the vids below, have split some videos off for things like Pure Boarding, Swoard & Doctorfilm.RU Extreme Carving, and examples of + & - heelside styles.

Follow cam section shows pretty consistent slarving / wide track on heelside. Nose cam shows what your Right knee, the knee on the outside of your heelside turn is doing. Deliberately bringing my Right knee, on the outside of my heelside turn , towards the inside of the turn helped me solve that same slarving problem. Same effect could be produced by trying to make it feel like you've put your weight on the left hand side of both of your feet.

Next you'll give up the beer and go "on the wagon"!

@bryandifrancesco You wrote that you wanted to "carve amazing turns" having watched others do it. What kind of "amazing" do you want to start with? Just leaving clean C's behind you as you freecarve the mountain? Getting really low with the sides of your trousers and forearms on the snow? Full blown body dragging Eurocarve /Vitelli turns? Pureboarding style as per Joerg Egli? Race carving through a NASTAR course or similar? Your answer will help others help you get there faster.

Skiing, cos I was riding a chairlift wearing skis when I saw my first carver. And I was always into trying to make carved turns even back when a GS ski was over 200cm long. Skateboarding only a nose behind because I was always more at home on my slalom and downhill boards than my ramp/halfpipe boards.

For 3 or 6 degree lift may have to go the custom build route (3D printing option?). The standard set provide about 4 degrees lift +/- 3 degrees canting.

9 degree cant disc, offset to binding baseplate, is a solution for appropriate lift and outward cant combo for skwal riders.

@bigwavedave Rode Pat Chouinard's Thirst Superconductor at Snowmass recently. They're resonant rather than damp, and that's quite a roar they make! Quite a contrast to my stealthy P-Tex topped Coiler Nirvana.

Like @daveo interested to know year of manufacture, days of riding estimate, any serious crashes? I had a 2012 Coiler NSR 180cm fail at its' outermost nose UPM inserts, fortunately not catastrophically, but a noticeable crimp became visible. Bruce Varsava told me that every extra insert creates an extra weak point so it's an issue board makers are aware of. AllFlex mounts are in even thinner parts of the board core. Given both of those things builders are now presumably reinforcing those areas to reduce the failure risk. On that basis, and that of material use fatigue, older boards with plate specific inserts are presumably at greater risk and should be inspected regularly. Thanks for posting @nitro and hoping your recovery goes smoothly and quickly.

Love fresh groom videos. They make the long hot days if summer almost bearable. Love the gradation of movement in your body as you ride. The slo-mo shows that even on fresh groom the board is flicking and twitching in response to the surface, even though the carve tracks are very clean. You show a great + position on both heelside and toe, allowing your legs to flex at hip and knee and absorb the board's movement. Your trunk is beautifully steady and because of the great suspension action in your legs effectively isolated from the movement below. Smoooooooth as @Lurch wrote. And despite handling the camera on a selfie pole you still make almost no unnecessary movements with your arms. A video like that gives me plenty to aim for next time I'm riding.

Lateral flex is useful if you need to absorb shocks from side to side, across your pelvis, because you're using a - stance on your heelside. Stiff boots useful for the same reason, that you want to "lock" that edge angle on heelside. I suspect that I am more of EBs mind. The + stance for heelside with edge pressure through the soles of the feet benefits from laterally stiff bindings and because of the different alignment of the pelvis relative to the direction of motion, allows more effective suspension while maintaining an accurate edge angle. I've said before that Vic Wild and Ester Ledecka both ride more + on heelside than many other racers. I think Justin Reiter may kill the goose that lays the golden eggs if he manages to coach Ester to change to more - position, as he stated to me in a Facebook conversation.

@daveoInstead of using an argument that appeals to the authority of a gold medal winner, why not go back to first principles, using that mathematical mind of yours, and consider the force vectors that bumps and ruts might produce to act upon a rider's centre of mass while they carve their board at 40+km/hr. Then think again about how bodies absorb those forces by using muscle tension and joint movement. You just might come up with a different answer than the "received wisdom" of current race technique.