contact length

Post by **device** » Thursday 18 October 2007, 16:01

Hi there everybody!

Well, about the subject.
Untrivial question: how does contact lenght affect to the curve radius?
For example, can shorter contact make a smaller curve radius within the same total board lenght?
Board with total 169 cm and 146 contact vs board with 169 total and 151 contact.

Post by **RicHard** » Thursday 18 October 2007, 16:29

Contact length is not related to radius.
I mean: radius is a function of several parameters.
Given 2 boards A and B,
fixing a different contact lenght for both, they could have

a) same radius
b) A radius higher than B radius
c) B radius higher than A radius

Post by **device** » Thursday 18 October 2007, 16:54

So, if I read You right, the contact length does not affect to the curve radius at all? It's not about the board's one.
And how about the combination of shorter contact and pre-lifted nose (nose that starts to lift earlier than it should)?

Post by **RicHard** » Thursday 18 October 2007, 17:07

device wrote:So, if I read You right, the contact length does not affect to the curve radius at all? It's not about the board's one.
And how about the combination of shorter contact and pre-lifted nose (nose that starts to lift earlier than it should)?

the more the nose is lifted, the more you can surf on irregular terrain.
But most forward the nose lifts, less effective edge you have (and higher mass that moves loosing stability).
It depends also on the shape of the tip.
Round tip were considered to be less stable than vertex one (like silberpfeil): vertex had less mass.
Old theories? Boh?!...

Post by **device** » Thursday 18 October 2007, 17:29

Well, thanks for your opinion.
Theory is good but practice gives surprises from time to time

And I'm talking about the EC board. I wouldn't name it but it's easy to guess which one I mean

Post by **skywalker** » Thursday 18 October 2007, 17:42

RicHard wrote:
device wrote:So, if I read You right, the contact length does not affect to the curve radius at all? It's not about the board's one.
And how about the combination of shorter contact and pre-lifted nose (nose that starts to lift earlier than it should)?
the more the nose is lifted, the more you can surf on irregular terrain.
But most forward the nose lifts, less effective edge you have (and higher mass that moves loosing stability).
It depends also on the shape of the tip.
Round tip were considered to be less stable than vertex one (like silberpfeil): vertex had less mass.
Old theories? Boh?!...

There are two ways to look at a shape: vertical shape and outline.
Contact length is an issue of vertical shape, effective edge an issue of outline. Many modern boards use vertical shapes, on which the nose is bent upwards (vertical shape) before the effective edge ends. Boards made like this are said to start carving easier and to be more forgiving. A wider radius of the nose (i.e. G.S.-boards) should run easier over croppy terrain.

skywalker

Post by **frunobulax** » Thursday 18 October 2007, 18:16

Got ya, skywalker! Makin' fun of us in the german forum, but "brainwanking" here... Remind me to have a beer on your account when we finally meet...

Post by **vkrouverk** » Thursday 18 October 2007, 20:00

frunobulax wrote:Makin' fun of us in the german forum, but "brainwanking" here...

Brainwanking=Hirnwixerei?

Post by **Felix** » Thursday 18 October 2007, 20:05

Brainwanking = Voralrberg is too small for my talents. "At this time the most important thing for me is that our good contacts will be upright furthermore!

I considered starting my own business in consulting and lobbying ... that's why I apply to you, my long-time friend ... if you know about any area of operation for myself, where I am able to intend all my experiences and my know-how, please let me know. I am available any time."

-hehe Here in Austria we know to do good tranzlations. Just Vorarlberg is too small for his majesties great talents.

(copyright by the ex-vice-chancellor of Austria)