plummet wrote: ↑
Mon Apr 22, 2019 11:32 am
Ok I've moved the front fin 20mm further towards the footpade keeping 35mm from the edge.
What do you think of the rocker values and concave? 15mm too much? i'm wanting a bit of flex in the nose and tail. But at the same time i want as flatter waterline as possible for efficiency.
I've thought about channels, but i dont have the cnc blank ,illing capability. Plus I have leftover bamboo from last time. So it might not suit my resources for this build.
As soon as your tips are curved, you lose more energy where the water releases. Going forward the rear tip would dictate the efficiency, so I'd make that flatter.
Going backwards the highly curved tip is going to suck power regardless, so not much you can do about that unless you want to put a little step into it like some of the racing TT's have.
The overall rockerline depends on how flexible you want the board to be. I've gone the flexy route and like the comfort and it doesn't seem to affect my boosting ability.
If you're going flexible, you need to overdo the rocker so it flattens out once you put your weight on it. Trial and error here I suppose.
As for concave, I personally don't see the point of a concave unless you want to stiffen the board. From a dynamics point of view I think you score maybe 2 or 3 degrees of angle when edging, unless you go mega-heelside concave like Nomad does.