Embrace the strange

For discussions related to ski/snowboard construction/design methods and techniques.

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PTTR
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Post by PTTR »

So I just wrote this in another thread, about designing the core for a fishtail on a snowboard for it to turn as a normal tail, :

"I got this beam calculating formula from a friend;

normal width x normal thickness in 3rd = new width (fish tail width) x new thickness in 3rd

I don't know how to write these matamatical numbers and symbols on the computer and my math skills are very rusty, but I think it goes like this:

Exampel with a 4 mm core in a 300 mm wide board turned into a 100 mm wide fish "arm" with same flex.

300 x (4x4x4) = 100 x (YxYxY)

Y = square rote in 3rd of ((300 x 64) / 100)
Y = 5,77 mm

It opens up a few nice design possibilities if it works out. In my calculations above, one of the "arms" should have the same flex as a normal tail. When on edge it would turn and feel like normal. But when doing a ollie, and using both "arms" at the same time the tail would be what equals 5 mm in thickness and a lot stiffer with more pop..! ? Yes yes I know that a fish tail on a park/pist board is a stupid idea, but a soft, smooth and goodloking ride with pop, ahh maybe not so stupid after all."


But then I had a drink and started thinking. And here is the idea. By splitting the tail in 2, not fish style, a single cut, it would be possible to get a stiffer tail for landings on a pair soft carvers. Skis or snowboard. And if you place that cut ofcenter, the outer edge/heelside could be made softer than the inner/toe while having a rock solid landing platform. By doing it with a single cut instead of fishtail it would be possible to make twintipps.
If you wanna go extreme, cut two cuts and divide the ski/board in 3 pieces after calculating the new core thickness needed. Does it work you think? or why not?
skidesmond
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Post by skidesmond »

Split tail in a ski was done a long time ago by one of the big companies. I forget which company. A friend of mine had a pair. I don't know what purpose of it was back then other than to be different. The idea came and went.
artski
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Post by artski »

Hexcel, split tails
barnboy
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Post by barnboy »

Volkl used it on a pair of (then) fatty's 'bout six or seven years back I think too.
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MontuckyMadman
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Post by MontuckyMadman »

sanouk
sammer wrote: I'm still a tang on top guy.
knightsofnii
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Post by knightsofnii »

why not just glue ptex to the base of your 9'6" Noserider!!?!?!? lets go for it!!
Doug
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Post by knightsofnii »

take your paddle with you even!
Doug
PTTR
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Post by PTTR »

Haha, I might!
Split tail in a ski was done a long time ago by one of the big companies. I forget which company. A friend of mine had a pair. I don't know what purpose of it was back then other than to be different. The idea came and went.
I didn't think of split tails. I was thinking of something like this:
soft for turning, stiff when landing or going strait down.

Image
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FigmentOriginal
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Post by FigmentOriginal »

Here are a few Tinklers that have split noses and tails.

Image

Image

Image
Image
PTTR
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Post by PTTR »

Fantastic! yes, that is what I was talking about. Has anyone tried them? does it work? Stiff and soft at the same time. A snowboard or a pair of skis on half a pill of viagra.
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tufty
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Post by tufty »

PTTR wrote:Fantastic! yes, that is what I was talking about. Has anyone tried them? does it work? Stiff and soft at the same time. A snowboard or a pair of skis on half a pill of viagra.
They're reckoned to be the absolute dog's nadgers by those lucky enough to have ridden one. I do not feature in that group.

Coda made a split tail skwal, too, don't know if they experimented with split nose.
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MontuckyMadman
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Post by MontuckyMadman »

tufty wrote: They're reckoned to be the absolute dog's nadgers
wow.
Thats a new one.
sammer wrote: I'm still a tang on top guy.
PTTR
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Post by PTTR »

First try.
Image

Image

a pist-turn-carve-park-play ski. 170 cm long with 10 meter radius. Yellow base top and bottom and purpelheart sidewalls. Aimed to get the core a little stiffer than normal before the cut = a little softer than normal on edge but stiff in landings, but I am afraid I made it too soft. we will see, the radius is super short so they will need to bend, maybe it's good they are softer. Will test them on sunday.
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tufty
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Post by tufty »

Lookin' good.

Oddly enough, ran across this by accident, though of this thread :

Image
PTTR
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Post by PTTR »

AHHHHHHHH

like riding a rollarcoaster! The yellow fellow, tom bobadillo, supercarver.
In retrospect I probably shouldn't have cut the tail but what a ride! I've been away for a week of skiing and have lended them out to everyone. People return with bruises and smiles. A split second out of focus and the skiis are behind your head, trying their own version of a flatland linconloop.
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