Insite on building a Carbon Fiber Hull

[atlcustom1]

I am working on a lake project hull. I am looking for some input on how many plies are needed for adequate strength on the top, bottom, and H-pole sections. I was planning on using 3K material and some 12k on the bottom of the hull. How much kevlar should I use.
I have experience working with all these products, but have never made anything to this magnitude.

 

[Waternut]

There are a few things about different composite fabrics that you should keep in mind... Imagine you use 5 layers of different 8 oz. fabric on 3 different panels. The fiberglass will be the heaviest but cheapest, carbon fiber will be the strongest but most expensive, and kevlar will be the lightest but the weakest. If you applied enough layers to equal the same strength in all 3 panels, the kevlar will be the lightest of all 3. There are a couple other things about kevlar you should know about. First, it wicks water and if you're talking about an entire ski or even half a ski, it can absorb a few pounds in water which would negate the super light advantage. Second, kevlar is extremely hard to cut.

There is loads more information but these are just a few key points to consider.

 

[atlcustom1]

I do know the differences and benefits to each product. What I want to do is sandwich a layer or two of kevlar between layers of carbon fiber. I know that the top deck requires strength at the pole mount. But does not require as much stregth elsewhere as the bottom side.

 

[Tanman]

except your tray. stomp down too hard on a landing and just like some SN SJ do it will mash the foam down and crack out. might keep that in mind