hi
long time i not back in this forum
hope you are all good and still have some time for go surfing.
i was working for last year in somethingh not really new
but never arrive on market probably did but i dont know .
i did an alternative for wood stringers ,why? is about the flex and rebound in wood not possible to adjust .
basically this core stringer ,have layer multi layer of hi density foam same as density of balsa,glued toghter with epoxy
and reinforced with carbon or fiberglass .
the reinforce can be for example only in the middle of board
leaving the nose and tail more flex .
the stringers is little bit lighter compared basswood,the foam have density of 170-200 kg by cubic
is quiet similar to a sandwich panel like airex ,but more harder and the foam can be colored .
in picture there is 6mm foam stringer 3 layers
with 2 layers of unidirectional fiberglass inside
i been testing already few months boards
and they perform well ,feels like more lively on the water
probably because the board flex little bit more compared a wood stringer but the rebound is faster compared to wood
so i see this element in a surfboard make diffrent feel compared a standard p.u
the foam i been using for the blank is a bennett foam from australia.
so still a normal polyurethane foam with this stringer composite.
what is your opinon on this project ?
