Hi all!
I'm building an EPS hydrofoil board in the near future and have some questions:
The board will be 4'10"x20"x2"
The board has to be quite durable as it has to withstand hitting waves at high speed (25+ kn), I guess the occasional jumps cause a lot less stress.
My previous board was similar size XPS but only 1/2" thick on some areas. That build was 4x4 oz glass on each side with multiple 6 oz patches on high stress areas, but without veneer and lasted a few months before braking... By analyzing the fracture I guess it was caused by delamination of the top deck after hitting a wave at high speed.
By radically increasing the width and using veneer I expect to create a bulletproof board.
The core will be 2lb EPS (could I get away with 1.2 lb EPS? Its easier to source and bending the rocker...)
The layup from top to bottom:
4 oz glass
1/16" (2mm) cork veneer
4 oz glass
EPS core
4 oz glass
4 oz glass
Does this layup look OK?
I'm planning to wrap the veneer around the rails from the top for extra stiffness and durability, does it worth the effort or should I use it on the top only?
Cheers,
Ruf