My rail program isn’t quite at the autopilot stage yet. It won’t do rail tucks. Here’s a mid-board rail cross-section like my favorite board. You might like it. Keep in mind that these are unglassed foam dimensions. The cross section is 2.8" thick, yielding a +/- 3" thick board. The rail line is 0.8" up from bottom. The bottom (so far) is a circular arc. The deck is an exponentially compressed elipse, Exponent = 2. The deck is crowned. For its rail thickness, the formula maximizes foam thickness for floatation. For construction, you’ll need three templates, top, bottom, and both together. That’s why the zero thickness is at the rail line. The deck goes positive while the bottom goes negative. Width dimensions are from stringer center line. Draw it up, maybe on card stock, and see how it looks. You can get an engineer’s scale at the office supply store. I can tweak the exponent quickly. Just ask. Meanwhile, I’ll be programming that rail tuck. I actually enjoy this stuff, and I’m home sick today. Width Bottom Deck 11.50 0.00 0.00 11.45 (0.28) 0.26 11.35 (0.47) 0.45 11.25 (0.58) 0.58 11.15 (0.66) 0.68 11.05 (0.72) 0.77 10.85 (0.79) 0.91 10.65 (0.80) 1.03 10.45 (0.80) 1.13 10.25 (0.80) 1.21 10.05 (0.80) 1.29 9.55 (0.80) 1.45 9.05 (0.80) 1.57 8.55 (0.80) 1.67 8.05 (0.80) 1.74 7.55 (0.80) 1.80 6.55 (0.80) 1.89 5.55 (0.80) 1.94 4.55 (0.80) 1.98 3.55 (0.80) 1.99 2.55 (0.80) 2.00 1.55 (0.80) 2.00 0.55 (0.80) 2.00 0.00 (0.80) 2.00
These Width numbers will be easier to work with. The shape is the same: Width Bottom Deck 11.50 0.00 0.00 11.45 (0.28) 0.26 11.40 (0.39) 0.37 11.30 (0.53) 0.52 11.20 (0.62) 0.63 11.10 (0.69) 0.73 11.00 (0.74) 0.81 10.80 (0.79) 0.94 10.60 (0.80) 1.05 10.40 (0.80) 1.15 10.20 (0.80) 1.23 10.00 (0.80) 1.31 9.50 (0.80) 1.46 9.00 (0.80) 1.58 8.50 (0.80) 1.68 8.00 (0.80) 1.75 7.50 (0.80) 1.81 6.50 (0.80) 1.90 5.50 (0.80) 1.95 4.50 (0.80) 1.98 3.50 (0.80) 1.99 2.50 (0.80) 2.00 1.50 (0.80) 2.00 0.50 (0.80) 2.00 0.00 (0.80) 2.00
Thanks a ton! I made an outline template off the numbers you gave me and it looks GREAT!!! Thanks again, Scott These Width numbers will be easier to work with. The shape is the same:>>> Width Bottom Deck>>> 11.50 0.00 0.00>>> 11.45 (0.28) 0.26>>> 11.40 (0.39) 0.37>>> 11.30 (0.53) 0.52>>> 11.20 (0.62) 0.63>>> 11.10 (0.69) 0.73>>> 11.00 (0.74) 0.81>>> 10.80 (0.79) 0.94>>> 10.60 (0.80) 1.05>>> 10.40 (0.80) 1.15>>> 10.20 (0.80) 1.23>>> 10.00 (0.80) 1.31>>> 9.50 (0.80) 1.46>>> 9.00 (0.80) 1.58>>> 8.50 (0.80) 1.68>>> 8.00 (0.80) 1.75>>> 7.50 (0.80) 1.81>>> 6.50 (0.80) 1.90>>> 5.50 (0.80) 1.95>>> 4.50 (0.80) 1.98>>> 3.50 (0.80) 1.99>>> 2.50 (0.80) 2.00>>> 1.50 (0.80) 2.00>>> 0.50 (0.80) 2.00>>> 0.00 (0.80) 2.00
What program is this? And where do you get it?
Personally, I think you are all staying up way too late. Outlines are of the least importance in a boards performance. How can 16 top pros all ride different numbers? Rocker and bottoms are where it is at! In the late 70’S, I had the misfortune of meeting up with a space engineer from Kennedy who had access to a plotter that would do full size templates, mathematically perfect. He couldn’t shape to save his ass, but his boards “were perfect curves” and he was a moron to have near tools or materials! Put those numbers to work in the water first. Jim" I can Cypher" Bodine http://www.JimtheGenius@aol.com