Water Ski Building

Brazen · Post by **Brazen** » Fri Jun 03, 2011 7:33 pm

Alfa Aesar

MontuckyMadman · Post by **MontuckyMadman** » Tue Jun 07, 2011 4:59 pm

Brazen wrote:Alfa Aesar

Wha?

Brazen · Post by **Brazen** » Tue Jun 07, 2011 5:14 pm

prospectsnow wrote:On a separate note, the guys in this video are dorks, and who makes nanotube carbon?

Alfa Aesar )

MontuckyMadman · Post by **MontuckyMadman** » Tue Jun 07, 2011 6:37 pm

Yeah i got that but i see no mention of that type of product on the website.
but i dont know what im talking about.

Brazen · Post by **Brazen** » Tue Jun 07, 2011 7:51 pm

http://www.alfa.com/en/gp140w.pgm

I guess I should have just posted the link. Sorry

hell, that doesn't work as a link just enter carbon nano

44945 Fullerene, carbon nanotube, multi-walled, 3-20 nm OD, 1-3 nm ID, 0.1-10 micron long, 95%
MSDS | Prices

44790 Fullerene, carbon nanotube, multi-walled, ≤8 nm OD, 2-5 nm ID, 0.5-2 micron long
MSDS | Prices

there's also a cool java structure search engine, build a quick f/c1 and you'll get the same results if you search as a substructure.

MontuckyMadman · Post by **MontuckyMadman** » Tue Jun 07, 2011 9:37 pm

what video?
How do you integrate nano tubes into a ski layup?
Is that what dps is bs'ing about?
Carbon+nano?

prospectsnow · Post by **prospectsnow** » Sat Jun 11, 2011 11:39 am

It is in powder form?
What way could that be layed up so that it gives the ski structure and stiffness?
I was expecting something more like a unidirectional layout or a tow.

Brazen · Post by **Brazen** » Sat Jun 11, 2011 1:12 pm

prospectsnow wrote:It is in powder form?

So you can visualize the size: A single grain of talcum powder or your girlfriends face powder is = to or < 10 micron, but for our purpose we'll say it's a micron. A nanometer is 1/1000th of that size, so yeah...powder would be the way it looks, but powderier

. The size of these particles passes the blood/brain barrier membrane with impunity...to see it readily think dyeing and electron microscopy or a laser cytometer to read refraction/reflection. They can be aligned in an assload of ways. I'm still puzzled as to how this is useful in a snowboard though...did I miss somethin'?

skidesmond · Post by **skidesmond** » Sun Jun 12, 2011 5:54 am

I don't see how it's of use in powder form. Some one has to make it into a sheet, I would think. There's plenty of vids on Youtube on how the nano tubes are made, but it looks like powder.

prospectsnow · Post by **prospectsnow** » Sun Jun 12, 2011 9:59 am

prospectsnow wrote:One of the guys showed me some video from goode skis. The process is at 7min. it looks like it is pretty much just a cap cassette.

On a separate note, the guys in this video are dorks, and who makes nanotube carbon?

Wow, I'm dandy. it helps if I put in a link for the vid.
http://www.goode.com/wsNANO.html

This water ski uses these carbon nanotubes supposedly to make the ski lighter. The way the water ski guys at the shop were perceiving it is that these ski have the nanotubes down the length of the ski and that makes a lighter snappier ski. I was surprised to see the nanotubes are in powder form. My question is the same. How is this used to make a better water ski and how can we work it into making nan(er)tube snowboards?

Brazen · Post by **Brazen** » Sun Jun 12, 2011 2:05 pm

It's just not practical yet, IMO. The manufacturing methods for aligning single wall nano tubes into any useful material is tremendously expensive at this point (see "buckypaper). Carbon nanotubes are like "oil and water" in epoxy resins, and the very thought that adding them unaligned to a board in any mixture would add strength, or any serious benefit other than marketing BS just makes me smile...it's "MAGIC PRICE INCREASE DUST"!!! Aaaaahahahaha! Any material science engineers want to chime in here? <whispers> Just use carbon fiber.

texfrost · Post by **texfrost** » Fri Jun 17, 2011 10:45 am

Well, glass and P-Tex are on the way. Now I just need to make/find a mold to use to knock these out after I make the core. Which I'm still not certain on how to do.

The trick ski post was interesting. Though, I have no idea where to get the foam for something like that, and would like it to be more still than a trick ski is. Kind of half way between a trick ski and an intermediate slalom ski.

Could one use a painters plastic drop cloth or something of the like to form a rough vacuum bag? Just curious while I am looking around...

Damon · Post by **Damon** » Sat Jun 18, 2011 12:36 pm

The bulk of carbon nanotube research right now is focused on how to "grow" tubes longer than nano/micrometer lengths.

As they stand now, a powder will do two things applicable to us: increase the modulus of the resin and provide impact resistance.

prospectsnow · Post by **prospectsnow** » Mon Jun 20, 2011 6:11 am

I saw a video a while back and connelly does an injection mold on their boards. Otherwise maybe it could be planed with a surfboard blank?

I don't know much about foam that is used, but fiberglass supply has some similar stuff for surfboards and boats

http://www.fiberglasssupply.com/Surfboa ... plies.html
http://www.fiberglasssupply.com/Product ... _foam.html

Richuk · Post by **Richuk** » Mon Jun 20, 2011 11:28 am

Do you guys not watch channel 2 news - it's a must!

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