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 Post subject: advice needed on layup
PostPosted: Fri Dec 03, 2004 7:53 pm 
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Joined: Thu Mar 11, 2004 9:40 pm
Posts: 21
Right: I have a big plate of corecell 0.64 cm, a big piece of kevlar, a piece of 220gr/m2 glass and a piece of 80 gr/m2.
Plans are a 130 X 37 cm board, concave, a good flex for a soft ride.
I was thinking of a layup of

220 glass
kevlar
corecell 1.9 cm
kevlar
220glass
80 glass
I know it will work but I'm afraid it might be quite stiff. Any advice?
Cheers


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 Post subject:
PostPosted: Fri Dec 03, 2004 9:24 pm 
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Joined: Wed Nov 20, 2002 1:00 am
Posts: 908
Location: rhode island
without knowing the weight of the kevlar i'd say...
(or even, if i did)

use only 2 layers of corecell (1.2 cm)
use rocker table to form concave ( less than one cm)
2 layeys of 220 glass - top and bottom
1 small patch under your feet.
forget the kevlar ( unless you have a specific need for it)


imo,
-bill


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 Post subject:
PostPosted: Mon Dec 27, 2004 4:30 pm 
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cheers Bill


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 Post subject:
PostPosted: Sun Feb 06, 2005 6:59 pm 
I'm trying this.

probably 160gr glass
160gr Kevlar
80gr glass
corecell with pvc-edges
80gr glass
160gr kevlar

Super solid, a good flex, but: its super-shit to cut the kevlar.
30min to cut 130cm of kevlar.

and very solid.


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 Post subject:
PostPosted: Wed Feb 09, 2005 8:45 pm 
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Joined: Tue Dec 30, 2003 11:56 pm
Posts: 86
You need to buy proper kevlar scissors to cut kevlar quickly.
You can buy them where you bought the cloth..

E.J.


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 Post subject:
PostPosted: Fri Feb 11, 2005 8:31 pm 
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Posts: 21
hey guest. that sure looks like a solid lay-up. you must have a thin core. Kevlar and 160 gr sounds a bit heavier than necesarry though.
Good luck :thumb:


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 Post subject:
PostPosted: Fri Feb 25, 2005 3:07 pm 
Well,
Indeed I think it might be quite strong...
Core is 2x 6mm corecell, tips 1x.

I'm a bit concerned about the flex that will remain after all layers...
I need a light layer above the corecell to protect color and/or design
and I did want a layer underneath the kevlar for bonding with the corecell.

Internally I added 2 carbon-stringers for rebound.

Any suggestion on where to reduce weight?

Btw, such scissors are far to costly for the number of boards I build.
(Tried cutting them with a stanley-knife, but its very hard to do... )


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 Post subject:
PostPosted: Fri Feb 25, 2005 6:54 pm 
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Posts: 8737
get the scissors, cutting kevlar with a stanley knife will pull the warp and weft all to shit in your cloth.


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 Post subject:
PostPosted: Mon Feb 28, 2005 10:42 am 
I just used normal (quite sharp) scissors...
It did take me a while, but I managed to do it cleanly.


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 Post subject:
PostPosted: Mon Mar 07, 2005 2:20 pm 
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Posts: 21
Dear guest. I would not recommend carbon stringers. Carbon has way more less flex than the other materials your using. This might actually cause a breaking line.
Good luck


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