Here's some info on a wood strip board I just finished: 137x43, 33cm tips, 4cm rocker, 3mm concave, 38mm rocker.
The goal is to be all-around board for 80kg rider in area where lulls come more often than gusts, with some tip area and width for both pop and glide, but not too flat a rocker line... ...hopefully the rocker, tapered tips and light glass will keep the width from causing too much of a beating when it blows up and gets choppier... Tips seem maybe too flexy, but the middle is fairly stiff...
ready for trials.JPG [ 30.66 KIB | Viewed 3053 times ]
rocker.JPG [ 35.99 KIB | Viewed 3053 times ]
A few details....
Core 2 layers of ~7mmx20mm western red cedar strips
3mm thick at tips, ~14.5mm at center, ~6mm at rails
Rails and inserts are epoxy filled with cotton fibers and graphite
Rails rounded 50/50 between straps, harder at tips
Skin 6oz e glass plus 6 oz eglass reinforcements
Resin Research epoxy.
bare 3.2 kg
The weight has me wondering if I should have used lighter straps than the luxuries, which add more weight than I like - they are like 500g apiece
but nice and soft...
The strips I started with weren't milled precisely, and I had no planer, so there's a bit more epoxy in the core than I wanted...
Easy to get shape right with 2 layer core, but a single layer would probably save 150-200g. Maybe next time, this one was partly just to use up the strips on hand....
Not ridden yet, we'll see.
The start, outline routed from a template
rail cut.JPG [ 33.4 KIB | Viewed 3053 times ]
poured epoxy rail
rail poured.JPG [ 31.9 KIB | Viewed 3053 times ]
the bottom layer of the blank, next to old boards 135x40 and 145x42
blank.JPG [ 57.63 KIB | Viewed 3053 times ]
Shaping the core layers before gluing up
bevel and tapering.JPG [ 43.57 KIB | Viewed 3053 times ]
Gluing on rocker table
core glue up clamped to table.JPG [ 51.13 KIB | Viewed 3053 times ]
inserts.JPG [ 56.4 KIB | Viewed 3053 times ]
glassing.JPG [ 67.16 KIB | Viewed 3053 times ]
shiny hull.JPG [ 52.69 KIB | Viewed 3053 times ]
Just wanted to post this board to say thanks to those who have given some advice along the way, it's the first one I have made for a while, I'll try to give an update on how it rides, when I get around to riding it....