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gozaimaas
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Location: Nagano Japan

Post by gozaimaas »

Ive taken 2mm+ off the thickness in the middle
gozaimaas
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Post by gozaimaas »

Im pressing a board tomorrow using some biaxial carbon I was gifted. Cant wait to see how it goes.
pentagram
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Location: queenstown New zealand

Post by pentagram »

good luck for todays carbon board press, interested to hear what weight carbon you use and how the flex comes out..
gozaimaas
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Post by gozaimaas »

I actually dont know what weight the carbon is lol.
gozaimaas
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Post by gozaimaas »

This is it. Its 0.22mm thick

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gozaimaas
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Post by gozaimaas »

Ok its a failure.
Its rediculously easy to flex tortionally, more than I expected and the weight is only 20grams lighter than the last one which is 170, this is a 162 split so less length but an extra 2 edges and extra 12 inserts.
It took about 120 grams less resin too.

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vinman
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Post by vinman »

Soft torsion should have been a no brainer, Good powder board maybe?
Fighting gravity on a daily basis
www.Whiteroomcustomskis.com
gozaimaas
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Post by gozaimaas »

I did expect it but not quite that much. Triax really does a great job.
pmg
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Location: Sonthofen

Post by pmg »

Hi,

the reason it so easily torsioned is the fibre orientation: its 0° and 90°. For torsional rigidity u'd need +45°/-45° fibre orientation.

The 0° in your board makes the flex harder, the 90° isn't doing too much at all :) Well, it adds a harder flex crosswise, which is something we don't really need as our skis/boards are much longer than wide.
gozaimaas
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Post by gozaimaas »

Oh really ;)
pmg
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Post by pmg »

Oh Yes :D

Really thought of posting this because an experienced builder like you surely knows this. But then thought of newbies reading this :idea:
twizzstyle
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Location: Kenmore, Wa USA

Post by twizzstyle »

I bring that up all the time. 90 deg fibers do nothing but add weight (at least in skis... I'll admit it might help a little on a snowboard, but not much). It does look nice though, and that should count for something!

Every once in a while somebody comes up with the idea that 90 deg fibers will help torsion rigidity, but it's just not true.

Great looking boards goz, regardless of the results!
gozaimaas
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Post by gozaimaas »

If you look at the carbon board you can see I sneakily marked out the inserts with some small pieces of baking paper that I cut with a hole punch.
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MontuckyMadman
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Post by MontuckyMadman »

but every time you bring this up I site that g3 and several other major manufacturers use 90 degree fibers in skis, so either they dont have enginerds working for them or they are retards, one of the 2.

It must provide some additional support allowing them to reduce fiber weight somewhere or adds dampening or its all a lie and its marketing and they put it in there and waste material and money.
sammer wrote: I'm still a tang on top guy.
pmg
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Post by pmg »

Well, if its used as a top layer I totally understand it - it just looks good.
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