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Thread: The new ski control / RaxSki

  1. #51
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    Quote Originally Posted by Tom from Austria View Post
    Yeah it`s my fault that you East Coast guys are still using these antique models of RaxSki! I should have already replaced them by newest models. I promise you to come and bring you RaxSkis with Wings in March.
    Please post up some close ups of the wings and explain their function.

    Also, have you got some video of hucking cliffs on rax?

    Big air dave would good to sponsor for flight testing the rax.

  2. #52
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    I heart this thread. Now where is Tom's arch nemesis, the Heartcarve guy?

  3. #53
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    Tom are you the same Tom that is my friend on myspace? If so I'll send you a instant message cuz I want to try them tele also. I like long skinny skis so these may not work for my real telemark skiing that I and the VT kingdom boyz are keeping alive.
    I'm the best DPP in the West.

  4. #54
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    Quote Originally Posted by Like a Boss View Post
    I heart this thread. Now where is Tom's arch nemesis, the Heartcarve guy?

    Shhhh, we do not need polecam action boy around.
    www.apriliaforum.com

    "If the road You followed brought you to this,of what use was the road"?

    "I have no idea what I am talking about but would be happy to share my biased opinions as fact on the matter. "
    Ottime

  5. #55
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    I gotta say-- opening video looked like .......... heartraxing?
    HTML Code:
    https://youtu.be/hhVylFtE2YE

  6. #56
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    The fins on the tail / heavy crud shredding device look oddly like the cowboy boot removal tool I have at home, Tom did you take any of your inspiration from this device?
    Click image for larger version. 

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  7. #57
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    Quote Originally Posted by robgoose View Post
    I gotta say-- opening video looked like .......... heartraxing?
    Perhaps...oh god...they are...no it couldn't be...the SAME PERSON?!?!?!?!?!


  8. #58
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    Quote Originally Posted by jumpturn View Post
    1)Please post up some close ups of the wings and explain their function.
    2)Also, have you got some video of hucking cliffs on rax?
    3)Big air dave would good to sponsor for flight testing the rax.
    3)Speed testing the rax 230cm comes before flight testing / Günther Foidl, Tyrol.
    For big air the landing with rax fins and wings will be very different from landing on conventional skis. Well it`s worth testing. This new feature will also have impact on freeride drops in pow. The Rax is of course a "one way vehicle" like a plane or a boat. So "fackie" backwards will never go as good as with twin tips.

    2)"video of hucking cliffs on rax?" Wait a little, Jumpturn. we need some snow on the Rax rocks. RaxSki is still just a snow-going vehicle, it`s not a "glider on the rocks".

    1)"post up some close ups of the wings and explain their function" Ok Jumpturn, you are responsible, it was your request.


    The physics of the ski control
    Think of the ski as an object moving thru the snow medium, mostly on its surface.
    The only force that can influence the ski movement is –apart from the gravitation-
    the pressure of snow mass acting on different portions of moving ski.
    ….
    The best description of the ski turn is that it is controlled by a number of edge sections interacting with surrounding snow. At any moment of time a section is “turning” the ski, i.e contributing to the resulting torque if and only if it is not parallel to the section’s direction of travel.

    This knowledge opens the door for new ski inventions. The function of the ski edge can be enhanced or even replaced by short fins or wings cutting the snow surface.

  9. #59
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    You could make the skis even lighter by eliminating everything from boot center forward, since from your video, this part of the ski never makes contact with snow.

    Can you guarantee shipping by Dec. 25th?
    Quote Originally Posted by ilovetoskiatalta View Post
    Dude its losers like you that give ski bums a bad rap.

  10. #60
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    Quote Originally Posted by Tom from Austria View Post
    3)Speed testing the rax 230cm comes before flight testing / Günther Foidl, Tyrol.
    For big air the landing with rax fins and wings will be very different from landing on conventional skis. Well it`s worth testing.
    Maybe you should consider the speed riding market?



    See also: http://www.snotr.com/video/5570/Spee...ntant_in_CLAIM
    Last edited by jumpturn; 12-21-2013 at 09:19 AM.

  11. #61
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    Quote Originally Posted by jumpturn View Post
    Maybe you should consider the speed riding market?
    ---
    The "speed skiing market" are those odd eight guys worldwide who can ride faster than 200 km/h on DH skis, Jumpturn.
    So the purpose of the whole action will be
    1) PR / to show that Rax is good for high speeds
    2) scientific / to find out which form of rear fins makes the best self-stabilizing ski.

  12. #62
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    Quote Originally Posted by Tom from Austria View Post
    The "speed skiing market" are those odd eight guys worldwide who can ride faster than 200 km/h on DH skis, Jumpturn.
    So the purpose of the whole action will be
    1) PR / to show that Rax is good for high speeds
    2) scientific / to find out which form of rear fins makes the best self-stabilizing ski.
    That was speed riding and not speed skiing.

    Come to think of it, another niche is straighting 1m wide couloirs.

  13. #63
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  14. #64
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    Quote Originally Posted by jumpturn View Post
    That was speed riding and not speed skiing.
    Come to think of it, another niche is straighting 1m wide couloirs.
    "straighting 1m wide couloirs" is the straigt way to hell, Jumpturn.
    A little inhomogenity on the snow surface is enough. Brrrrrrrr.
    But as you know with RaxSki one can tommahawk down 1m wide couloirs,
    as the only ski in the world.

  15. #65
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    Quote Originally Posted by bendtheski View Post
    You could make the skis even lighter by eliminating everything from boot center forward, since from your video, this part of the ski never makes contact with snow.
    Can you guarantee shipping by Dec. 25th?
    We would try our best, bendtheski. Well it depends on the shipping address. We are based in Vienna/Austria.
    So tell us your address.

    Yeah, the idea to make the ski lighter by cutting off the front part of the ski is a very original one. No comment.
    Lets stay in the reality

  16. #66
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    Quote Originally Posted by Tom from Austria View Post
    with RaxSki one can tommahawk down 1m wide couloirs,
    as the only ski in the world.
    Tomahawk-ready is def a marketing point, but can't you sliced your ear off with those sharp fins?

    Also, it is not clear what happens with self-arrests....

    The pro tomahawking market is really picking up.... huck 'n 'hawk, baby!


  17. #67
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    Quote Originally Posted by jumpturn View Post
    Tomahawk-ready is def a marketing point, but can't you sliced your ear off with those sharp fins? Also, it is not clear what happens with self-arrests....

    The pro tomahawking market is really picking up.... huck 'n 'hawk, baby!
    You can easily slice off somebody`s ear with the modern shaped ski edge - but not with rounded aluminium fins and wings!
    It`s my personal experience: my hands and even arms have been cut by edges many times.
    What is a self-arrest, Jumpturn?

  18. #68
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    These things would rock with hammerheads. If anybody has a flat pair, I'll put some tele bindings on, and video the results.

  19. #69
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    The pic shows our very new model "Joker with wings". These wings are not casted like all others but cut by water jet stream (!) and bent. As a consequence, we cannot mount normal releasable binding on these wings. That is why the complete ski is our lightest RaxSki.

    Some testers claim that this is the best Rax of all times. Both for groomers and steep couloirs. This could be great for fully stiffened mountaineering boots to descend couloirs and fairly light to strap to a pack..
    I can just say that most people prefer longer skis and think they badly need a secure binding. The customer is the king, isn`t he?

  20. #70
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    Quote Originally Posted by hhtele View Post
    These things would rock with hammerheads. If anybody has a flat pair, I'll put some tele bindings on, and video the results.
    Yeah, rocking the rocks with the Rax! What else?


  21. #71
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    Some maggots are asking how to quantify the performance of an alpine ski? There is a serious modelling of regular shaped ski, reported by Swiss institute (Federolf et al) under the title "Finite element simulation of the ski–snow interaction of an alpine ski in a carved turn" published in Sports Engineering, 2010, Volume 12, Number 3, Page 123. Federolf found that /under normal conditions/ so called "carving ski" cannot really carve but it is wildly skidding aside. The sacred "radius" is just a house number! We are working on testing RaxSkis under equal conditions.
    Yet even if you do not trust the experimental physics, you may be able to evaluate some facts when comparing regular ski with the RaxSki:

    how easy is a ski turn.
    Well, a shorter ski should have an advantage here. Moreover, when you lift its tip, the RaxSki will pivot on its rear fins having the total length of 10cm. 10cm is a little shorter than 160 or 180cm of your regular ski.

    how good is the carved turn / we want to keep on carving, to avoid skidding aside
    Well, the fins and wings can cut much deeeper than the sharpest ski edge, so holding the curve radius.

    can I execute carved turns with radii between 1m and 40m on the same ski
    The answer is YES for the RaxSki and NO for any other ski.

    can I vary the radius during the execution of a carved turn
    The same as above

    There is a simple method how to evaluate the tracking of your ski: read your own tracks



    Do you really think any other ski would hold the track on this >50° wall ?

  22. #72
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    I'm going to have to get some of these - surely I will dominate the Pain McSchlonkey this year.

  23. #73
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    Quote Originally Posted by narc View Post
    I knew something was missing from the start of the season. We had 'the turn' thread, the GSA thread bump, the gaper quotes thread bumped but it was a rax update from Tom that was missing.
    Whatever happened to OBernhardFranz, anyway?
    Change is good. You go first.

  24. #74
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    Quote Originally Posted by jrbd View Post
    Whatever happened to OBernhardFranz, anyway?
    NSA probably broke his code
    Screw the net, Surf the backcountry!

  25. #75
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    Quote Originally Posted by jrbd View Post
    Whatever happened to OBernhardFranz, anyway?
    I would also like to get some info about him. OBernhardFranz, can you hear us? Bitte melden!


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