Sport Today

by **Malcolm Jone** » Tue, 14 Feb 2006 10:04:48

I'm looking into building a board. There's lots of info in this news group and on the net. One question I have is should I bother with expensive carbon given there's about a 6:1 price ratio between carbon and glass cloth?

A more general question - most manufacturers claim to use carbon in their layups does anyone know the typical percent. That is: what percentage of the cloth used is glass/carbon/kevlar and where is it usually placed?

Malcolm

by **ratho..** » Tue, 14 Feb 2006 11:05:07

Hey Malcom,

Carbon sandwich is a blanket statement and can mean a whole gamut of
different things depending on the board and brand. I'm not a board
builder, so I can't really advise what materials mix you should use for
your own board, but I can give you a rough description of carbon usage
in a JP Freestyle Wave Full Wood Sandwich. We use carbon on the top
layer above the full wood deck in the standing area. This is basically
a big sheet from a little forward of the front straps all the way back
to the back footstraps. There's also a layer of carbon beneath the
full wood deck in the standing area. I assume it's in the same place
as the top layer, but I haven't peeled apart a board to that extent to
check for myself. Our Pro Edition boards have a full carbon kevlar
deck and a full carbon bottom. And our epoxy sandwich boards use
carbon reinforcements in the footstrap areas.

kev

by **wtrplne** » Tue, 14 Feb 2006 12:40:49

Quote:

> Hey Malcom,

> Carbon sandwich is a blanket statement and can mean a whole gamut of
> different things depending on the board and brand. I'm not a board
> builder, so I can't really advise what materials mix you should use for
> your own board, but I can give you a rough description of carbon usage
> in a JP Freestyle Wave Full Wood Sandwich. We use carbon on the top
> layer above the full wood deck in the standing area. This is basically
> a big sheet from a little forward of the front straps all the way back
> to the back footstraps. There's also a layer of carbon beneath the
> full wood deck in the standing area. I assume it's in the same place
> as the top layer, but I haven't peeled apart a board to that extent to
> check for myself. Our Pro Edition boards have a full carbon kevlar
> deck and a full carbon bottom. And our epoxy sandwich boards use
> carbon reinforcements in the footstrap areas.

> kev

This is probably one of the best resources for board construction knowledge,
though Eva doesn't specifically address making your own board.

http://www.boardlady.com/

My question is why on earth would you want to make your own board? It's
unlikely you will save much money in the end and the number of ways to go
wrong with the project are limitless.

Just my 2 cents worth.
Alan

by **Malcolm Jone** » Tue, 14 Feb 2006 13:30:08

Thanks for the detailed info. I'll probably use carbon to reinforce high load areas and only if I can get some offcuts.

I've read all of boardlady's info and recently fitted a tuttle box based on her method it came out great.

Why make one, umm.... for fun I guess, instead of watching reality TV at night, a challenge, who knows, certainly got nothing to do with saving money or risk aversion.

Actually I'm only half building since I have a foam core from a de-laminated f2 sputnik 275 (from late 1990's). I wouldn't feel confident to shape and agree with Alan that in that case I'd have a high change of ending up with something I'd hide under the house.

Malcolm

Quote:

>> Hey Malcom,

>> Carbon sandwich is a blanket statement and can mean a whole gamut of
>> different things depending on the board and brand. I'm not a board
>> builder, so I can't really advise what materials mix you should use for
>> your own board, but I can give you a rough description of carbon usage
>> in a JP Freestyle Wave Full Wood Sandwich. We use carbon on the top
>> layer above the full wood deck in the standing area. This is basically
>> a big sheet from a little forward of the front straps all the way back
>> to the back footstraps. There's also a layer of carbon beneath the
>> full wood deck in the standing area. I assume it's in the same place
>> as the top layer, but I haven't peeled apart a board to that extent to
>> check for myself. Our Pro Edition boards have a full carbon kevlar
>> deck and a full carbon bottom. And our epoxy sandwich boards use
>> carbon reinforcements in the footstrap areas.

>> kev

> This is probably one of the best resources for board construction knowledge,
> though Eva doesn't specifically address making your own board.

> http://www.boardlady.com/

> My question is why on earth would you want to make your own board? It's
> unlikely you will save much money in the end and the number of ways to go
> wrong with the project are limitless.

> Just my 2 cents worth.
> Alan

by **Paul Braunbehren** » Tue, 14 Feb 2006 16:01:46

As with most things, it's hard to beat a well oiled manufacturing and
design machine by DIY. The only reason to do it is because one has an
itch to do it. If you want to save money, paint your own house.

OTOH, I've built a guitar and speaker cabinet and heavily modded a tube
amp. The satisfaction of playing that rig is much higher then some off
the shelf gear from Guitar Center.

Quote:

> My question is why on earth would you want to make your own board? It's
> unlikely you will save much money in the end and the number of ways to go
> wrong with the project are limitless.

> Just my 2 cents worth.
> Alan

by **Tsunam** » Tue, 14 Feb 2006 21:34:14

Quote:

> I'm looking into building a board. There's lots of info in this news group

and on the net. One question I have is should I bother with expensive carbon
given there's about a 6:1 price ratio between carbon and glass cloth?

Quote:

> A more general question - most manufacturers claim to use carbon in their

layups does anyone know the typical percent. That is: what percentage of the
cloth used is glass/carbon/kevlar and where is it usually placed?

Quote:

> Malcolm

Mal try the below link. Best DIY board building site I've ever seen. Read it
all first then decide if you really want to do it....

http://www.ecboards.co.uk/frame_chapter_content.htm

by **Florian Feuser /FF** » Wed, 15 Feb 2006 01:15:21

Quote:

> Thanks for the detailed info. I'll probably use carbon to reinforce
> high load areas and only if I can get some offcuts.

> I've read all of boardlady's info and recently fitted a tuttle box
> based on her method it came out great.

> Why make one, umm.... for fun I guess, instead of watching reality TV
> at night, a challenge, who knows, certainly got nothing to do with
> saving money or risk aversion.

> Actually I'm only half building since I have a foam core from a de-
> laminated f2 sputnik 275 (from late 1990's). I wouldn't feel confident
> to shape and agree with Alan that in that case I'd have a high change
> of ending up with something I'd hide under the house.

If you are going to build your own, why not go all the way and shape it,
too?
Spend some time with pencil and paper drawing outlines and rocker lines
that look good to you; compare to photographs of stock boards that are
known to have similar qualities to what you are looking for. There are
quite a few good posts in the rec.ws and other archives about the actual
process. Try:
<http://groups.google.com/groups?hl=en&lr=&q=shaping+foam+hotwire&qt_
s=Search>

Most of all, don't use an old eps core from an old delam'd stick - it's
likely to have absorbed moisture and you'll have to shave off
significant amounts to get to "good" foam anyway. Use the sputnik to
build templates. It may not be a "modern" board but it's one that works
and there's a plenty to learn from copying a Thommen shape.

Have fun!

Florian

by **LeeD** » Wed, 15 Feb 2006 02:48:40

remember, you don't need to use ANY carbon for a light strong board.
Double Airex with pads works too.
Tubular technology, crowned decks and convex bottom shapes...or
convex bottom shapes give you the board stiffness from shape.
In production sailboards, seems even two strands of carbon is enough
to qualify for a "full carbon" label.

by **Wolfgang Soerge** » Wed, 15 Feb 2006 09:02:15

Quote:

> I'm looking into building a board. There's lots of info in this news
> group and on the net. One question I have is should I bother with
> expensive carbon given there's about a 6:1 price ratio between carbon
> and glass cloth?

> A more general question - most manufacturers claim to use carbon in
> their layups does anyone know the typical percent. That is: what
> percentage of the cloth used is glass/carbon/kevlar and where is it
> usually placed?

Start with glass and as simple a construction as possible if you have no
prior experience in composite works. You will make errors and won't be
able to really take advantage of expensive high performance materials in
the first shot.

Wolfgang

by **mikelayzell\"** » Fri, 17 Feb 2006 22:16:32

Quote:

> I'm looking into building a board. There's lots of info in this news
> group and on the net.
> Malcolm

G'Day Malcolm,
guess you're in Queensland, but just in case it's W.A. we had a
discussion about board building on the seabreeze forum, good info on
suppliers etc.
http://www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=2286&whichpage=1

Sport Today

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards

Amount of carbon in boards