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Please check plans! (first board)

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Please check plans! (first board)

Postby Tommy » Fri Feb 18, 2005 3:16 pm

I was going to take a high density foam (half inch) and put another layer of quarter inch on the bottom and top with fiberglass in the middle (epoxy Resin).
I was then going to put 24 ozs of fiberglass on both sides. I understand the process my question is do these materials make sense. or do you have a better sugestion? Also can I use the same fiberglass mat that I used for surfboards for the outsides and in between the layers of foam?

Thanx for any help

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Postby not annonymous » Sat Feb 19, 2005 6:34 pm

3/4" core is pretty uncommon now for a kiteboard, although that was what I used when I started making boards because that is what everyone used. 1/2" thick core is probably more common now. The thicker core will give you a much stiffer board compared to a thinner board with the same laminate. With the thicker core you will probably want to taper it down to less thickness towards the rails.

A 24 oz laminate on each side with wrapped rails will give you a very strong durable board but a little bit on the heavy side. With normal "plain weave" e glass, 18 oz on the deck and 12 oz on the bottom is generally considered the minimum for strength.

If you want the board to last a long time or plan on hitting things with it then 24oz laminate will work really well. If you want the lightest board around then it is too much.

Plain weave 6oz/yd surfboard glass works ok, but also consider using some biaxial or triaxial stitched fabric if you can find some. These fabrics are stronger than plain weave and also use less resin so the board will be a bit lighter.

For example, On my 3/8" thick corecell cores, I have gotten good results with one layer 12oz biaxial oriented at +45, -45 degrees, one layer 6 oz plain weave, one layer 4 oz plain weave.

Make sure you use a good foam like corecell or divinycell, around 6 pound density.

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Postby » Fri Feb 25, 2005 5:59 pm

Tommy, check the Carbon fiber topic... I posted in there how to make a VERY strong and light board... it isn't very cheap though.

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