Pure carbon skis?
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- MontuckyMadman
- Posts: 2395
- Joined: Fri Jun 20, 2008 9:41 pm
A german company: http://www.hp-textiles.de/MontuckyMadman wrote:where are you getting this fiber please?
Don't know if they ship worldwide but in E.U. It's fair shipping rates.
- MontuckyMadman
- Posts: 2395
- Joined: Fri Jun 20, 2008 9:41 pm
Correct, it's 150gram in each direction. Though I figured there pther ways to stiffen up longitudinally. I'll find out how that works in a couple of weekschrismp wrote:i buy all my composites at hp-textiles as well! though i never order their triax because the weight is spread evenly across all axes, but according to mike from happy monkey you want more fibers running longitudinally. thats why i always buy 320g biax and 440g uni glass.
- MontuckyMadman
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- Joined: Fri Jun 20, 2008 9:41 pm
Not you too...BGF ffs, http://www.bgf.com/industries_served/co ... on_fabric/ . The largest manufacturer of this material in the US?
"86% of the time it works 100% of the time".
The last I spoke with BGF they made no triax carbon and nothing with a +/- 45° orientation. Maybe my sales rep just didn't know something?Brazen wrote:BGF has a seconds price list, 10/12 oz triaxial weave (faultless) runs about 18 a meter. Ask your glass rep (North American Composites or Composites One) to call them for it.
Ok so the fibers I ordered are as stated 450gram 33/33/33% triax carbon. 150g carbon in the 0 degree.
Do you think that will be enough if I make the core slightly thicker then if I'd used 450g FG with more fibers in the 0 degree direction?
Or would you have used uni carbon instead of thicker core for more stiffness?
I realize many of these questions are impossible to answer but I have never tried carbon and since alot of you have all th input I can get is immensly helpfull.
Do you think that will be enough if I make the core slightly thicker then if I'd used 450g FG with more fibers in the 0 degree direction?
Or would you have used uni carbon instead of thicker core for more stiffness?
I realize many of these questions are impossible to answer but I have never tried carbon and since alot of you have all th input I can get is immensly helpfull.
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- Location: Western Mass, USA
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I have only a little experience w/ CF. I ran some tests with 9.4oz (270g?) Uni-CF comparing it to 20oz (570g?) triaxial FG. The CF was just as strong as the FG at less than 1/2 the weight.
The triaxial CF sounds very light to me. Just a gut feeling.
http://www.skibuilders.com/phpBB2/viewtopic.php?t=3868
The triaxial CF sounds very light to me. Just a gut feeling.
http://www.skibuilders.com/phpBB2/viewtopic.php?t=3868
Ok, so I've been playing around with some CAD software and thinking how to get the weight down as much as possible.
I measured and the first and only pair of skis I made were huuuge (194cm), with 2753 cm2 @ roughly 2480g
= 0,90gr/cm2
My new pair are also fairly large but weighs in at:
2453 cm2
Have anyone out there calculated the same numbers? I would be thrilled to have something to compare to.
I measured and the first and only pair of skis I made were huuuge (194cm), with 2753 cm2 @ roughly 2480g
= 0,90gr/cm2
My new pair are also fairly large but weighs in at:
2453 cm2
Have anyone out there calculated the same numbers? I would be thrilled to have something to compare to.
- MontuckyMadman
- Posts: 2395
- Joined: Fri Jun 20, 2008 9:41 pm
per pair or each?
big pow skis made from poplar and glass will not really be under 1800g each unless you do something crazy.
a 1240 gram ski will be insanely light, that's like 2 lbs per ski.
Most of the skis we make weigh right around 2200g per ski.
Big pow skis with plastic topsheets and plastic sidewalls.
big pow skis made from poplar and glass will not really be under 1800g each unless you do something crazy.
a 1240 gram ski will be insanely light, that's like 2 lbs per ski.
Most of the skis we make weigh right around 2200g per ski.
Big pow skis with plastic topsheets and plastic sidewalls.
sammer wrote: I'm still a tang on top guy.
Yes, I meant each. I did another measure today and mine are 2350g per ski, but as i said they are extremely wide. What I was curious about was if anyone have measured the gram/cm2 and come up with a comparable number. Since I'm no genius on CAD software we did use SnoCad-X and with the DXF file exported into a real CAD program you can measure the area of the ski and get a comparable number.MontuckyMadman wrote:per pair or each?
big pow skis made from poplar and glass will not really be under 1800g each unless you do something crazy.
a 1240 gram ski will be insanely light, that's like 2 lbs per ski.
Most of the skis we make weigh right around 2200g per ski.
Big pow skis with plastic topsheets and plastic sidewalls.
Have anyone of you made some similar calculations?
My first pair which are to soft get a number of roughly 0,85gr/cm2
With plastic sidewalls, plastic topsheet and fiberglass.
For example: (According to Brant Ski magazine Sweden) (each ski)
K2 Sideseth 188cm: 2382cm2 - 2498gr = 1,05gr/cm2
Rossignol S7 190cm: 2310cm2 - 2432gr = 1,05gr/cm2
Völkl Kuro 185cm: 2640cm2 - 3121gr = 1,18gr/cm2
Salomon rocker2 115 188cm: 2266cm2 - 2300gr = 1,02gr/cm2