Alright boys and girls,
for those of you who wonder why there’s flat spots on your pre shape, here’s why. In the picture below you can see two red circles. Pay particular note to the circle on the tail. Pay particular particular note to the drag handle as it touches part of the tail rocker. That’s the bit that’s been circled in red.
Now for picture two.
On second thoughts, why can’t I edit my post or get my pictures in the right order? Anyway, the bottom picture is what is causing it. The top picture is how to fix it.
Dean:
I see your correction of your flat spots on the nose and tail. What about the dip in the deck line near the chest position? It’s kind of like a camels hump?
Is that some kind of new design? I usually like my deck lines smooth and constant. However I learned to design my boards from the deck line first. Foil thickness should flow without warbles or dips. However I may be wrong because you might have theory behind your design?
Once I have a shape that works well I have it scaned. From there I register it for repeatablity. The file is refined to have no defects before cutting. A test cut is made and any final adjustments are made before the board model goes into production.
Sorry to jump in here it’s just an area where I work in.
SD
You fixed it with red circles?
I really like a clean lined deck curve, but on thicker boards I find that gluing to the deck rocker puts quite a bit more curve in the bottom through the apex.
Gluing to the bottom rocker keeps the natural original curve, but distports the deck line.
To bring it back to a nice attractive deck line, increases the deck rocker and thins the blank back to below what was in mind.
I let the center line stay distorted, but at the rail line shape in a nice flow that by the time it gets to the center has become Frankensteined.
This is what I did on the Inter Island Ka Po’e A’ea, the center is 3-5/8"- 3-3/4", but has a rail thickness of a performance 9 footer.
I find in my old age, that sometimes beauty has to take a slight side step to extract the performance aspect that would otherwise be lost
The power of red circles is really quite amazing.
Dean: big improvement!
Sd
