Ski Builders Forum

Does anybody have any idea how much the process of splitting a board in half changes the flex profile?

I split a snow mullet a couple years ago, and it turned in to a noodle.

If your profile is 2mm 7mm 2mm and you want the same flex in a split is it reasonable to assume an increase of .5mm so 2.5 7 2.5? Is there a magic formula.

Ideas?

I wouldn't think splitting it in half would make the longitudinal stiffness any different. Torsionally I could see it getting much softer, but I'm surprised the board you cut in half went soft.

I'm pretty sure there is a formula something to do with the square of the cross sectional area. Tried to search for it but have limited time and couldn't find it.
some of the engineer types should be able to come up with it though.


sam

sammer wrote:I'm pretty sure there is a formula something to do with the square of the cross sectional area. Tried to search for it but have limited time and couldn't find it.
some of the engineer types should be able to come up with it though.


sam

Yes but if you're using both halves, the total cross sectional area is the same. That's where I'm confused (I'm an engineering type, but my expertise is in airplanes)

maybe since they are split they are flexing somewhat independently of each other?

Guess I need to go look at some factory splits and check out core thickness.

I bet the use of a metal edge on that inside "split edge" would help reduce the noodleness that occurs. I know priors splits are pretty thick but they are damn stiff too. Metal edge on all sides.