On the other hand, if you have the opportunity try one of Mike Tinkler's
custom flex tailed boards.
: Mistral was promoting a board design that incorporated a flexible tail
: section. The amount of flexibility was varied by adjusting some
: compression spings situated in a gap between the bottom planing surface
: and the solid deck section above.
: Why not use the flexural modulus of flat plates? Of fiberglass...
: What range of flexiblity was needed I wonder? You could even make
: all the plates of the same thickness but vary stiffness by changing
: the orientation of the fibers in a composite spring.
: How effective and popular was this variable stiffness board?
It is a board with the last 2 ft. or so on a hinge with two springs
near the rear footstrap. Flat bottom and fairly hard rails at the
back for speed, but then when you jibe or turn in the waves/swell
the tail flexs to more better 'rocker" and you zip around and
can make a really nice turn. Works well, but is heavy and expensive.
The boards are really fun for us heavy weights in Gorge type sailing.
I use a slotted wave fin in the GOrge and a "LD" blade in the SF Bay
with mine. FIn selection seems pretty critical since too much fin
makes the board really squirley much like a course board yet it sail
like a wave board.....doesn't go upwind well unless powered. I bought
mine at a close-out for $400 as my first shortboard (got a bigger one
pretty quick since this was too much a drop from my Malibu...) and it
was probably the best $400 I've spent on the sport. Really having trouble
deciding what to replaace it with so I just keep sailing mine....
ASD epoxy: 8'8" RKT, 8'11" CS & 9'6" no-nose CS; Mistral CFlex and Malibu
Wt 213#, Ht. 6'0", Usually sail on SF Bay, Cailf.
> THERE ARE NEW DEVELOPMENTS COMING SOON INVOLVING EVOLUTION OF THIS IDEA.