Boardshape, the needs for a fast board? [part 2]


Another thing that makes boards fast is weight, this weight gets more important in lightwind conditions soo I found. This could also be translated to lightweight boards are important for extreme efficiency windsurfing, I believe this is true. At least it works really well for me and my sailingstyle.

There is always a balance between board/fin/sail for vertical lift. There are lots of compromizes possible, but this is what I prefer (for speedsurfing only):

  • Sail lifts the surfers weight for 50-60% or even more? while putting another 10-30% on the mastfoot? (these values are not measured, a very rough estimation)
  • The fin lifts out the boardweight from the mastfoot and behind+ maybe 10% riderweight.  
  • The board also will need to generate lift, but I prefer for efficienct to sail the board as much as possible out of the water.
Now the trick would be a board that wouldn't weight anything has no in speedruns almost no need for vertical lift from fin and bottomshape, which boosts efficiency a lot (this can be up to 10% more efficiĆ«nt). While a heavy board will always have problems with constant looseness, needed to compensate in total efficiency.

This is based on these recent experiences:
  • Begin April 2010, sailing Patrick van Hoof his 4kg? 100liter Sonck board, this was a really interesting experience...
  • 22 May 2010, sailing the fanatic ray 140 liter, 9.5kg
  • The 2009 and 2010 fanatic falcons (I never measured) being heavier than the previous ones (at least it feels like)
  • I read somewhere Antoine Albeau believes the JP boardconstruction is the main reason for their performance. Only thing I don't understand why 2010 JP boards are heavier compared to 2009. Starboard is now lighter in the 131 liter size, and looking to Korea results with 2 starboards in top-3..... It was a smart thing to introduce the woodcarbon, innovation in boardconstruction might be the key for next years.
With this knowledge, I also think about the advantage customboards could have. The current shapes are really good, but with construction there can be won a lot. This would result at least in a lot less enforced speedrun. When you really aim for worldrecord, especially very efficient I think getting the boardweight down is at least in top-3 for big improvements.

So if this 4kg sonck board made in past century is possible and still in 1 piece. We should aim for the same weight. I don't know much about building a board, maybe these numbers below are impossible for some. But to win you have to be smart ;)

40 wide ==> 3.2-3.5kg
45 wide ==> 3.4-3.7kg
50 wide ==> 3.6-3.9kg
55 wide ==> 3.8-4.1kg
60 wide ==> 4-4.3kg

Erik Loots

Erik is windsurfer for 10+ years. In his daily life he is professional in construction dewatering, advisor, troubleshooter. Erik likes adventures, explore and to challenge himself. During his life he is trying to get the best out of it and have respect for the earth, nature and future generations. The modern world is about sharing, in this blog Erik shares his experiences, selfreflection and lessons learned.

No comments:

Post a Comment