Vertical Fiber in Cores

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

Moderators: Head Monkey, kelvin, bigKam, skidesmond, chrismp

Post Reply
Thelongride
Posts: 38
Joined: Thu Jun 06, 2019 8:53 am
Location: Washington

Vertical Fiber in Cores

Post by Thelongride »

This may have been discussed before, but I see a few major manufacturers running vertical strips of aluminum in their cores. And in effect connected the top and bottom fiber layers (making the I beam we are all so familiar with).

I wondered if anyone has laminated up cores with fiber in between each layer. Carbon, glass, kevlar etc. and if they've seen any positive results.

In theory you'd get some great composite beam benefits.

I was thinking of using biaxial flax to go easy on tools while profiling, and to help stay away from the noxious dusts.

User avatar
chrismp
Posts: 1392
Joined: Fri Feb 13, 2009 9:00 am
Location: Vienna, Austria

Re: Vertical Fiber in Cores

Post by chrismp »

Bcomp used to use biaxial flax fibers vertically in their cores for that exact reason. They had +45/-45 degree layers laminated between sections of end grain and flat grain balsa. However, in their new line of cores they have stopped doing that and incorporate balsa wood sections rotated to +45/-45 degrees instead of the flax.

Thelongride
Posts: 38
Joined: Thu Jun 06, 2019 8:53 am
Location: Washington

Re: Vertical Fiber in Cores

Post by Thelongride »

Interesting, so they've dropped the flax altogether?

that would make it look like perhaps it doesn't have the benefits it seems at first glance

User avatar
chrismp
Posts: 1392
Joined: Fri Feb 13, 2009 9:00 am
Location: Vienna, Austria

Re: Vertical Fiber in Cores

Post by chrismp »

Looks like they did. This is their old core configuration:
c7ba18ae80d6c61302c108bc237523ee.jpg
c7ba18ae80d6c61302c108bc237523ee.jpg (26.37 KiB) Viewed 681 times
And this is what they sell now:
bcores-product-image.png
bcores-product-image.png (528.86 KiB) Viewed 681 times

mammuth
Posts: 436
Joined: Tue Oct 28, 2014 3:48 am
Location: somewhere in the alps

Re: Vertical Fiber in Cores

Post by mammuth »

I think the main reason for the industry to do that is to counteract the weak quality of cheap wood core production. And for marketing ;)
Tom

BS Tech
Posts: 15
Joined: Wed Nov 06, 2019 12:41 pm

Re: Vertical Fiber in Cores

Post by BS Tech »

we gave it go with vertical strips of g-10.
The first ski had 4 full length strips, could barly flex the ski!
Second had two full length near the edges. See pic. This ski was AWESOME!! The skis even survived being strapped to the back of a tomahawing snomo!
Third ski, we did three strips. Skied ok, but you had to be on your game. They had ALOT of pop.
Attachments
099 resized.JPG
099 resized.JPG (165.07 KiB) Viewed 628 times

Post Reply