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14 November 2012

Luderitz tech talk

Interesting stuff in Luderitz after seeing results and footage, never before it was this good documented. Theory and results are matching and everyday or every run more is almost equal to higher speed. This men made canal demonstrates a few principals. Most interesting is to see speedsurfers go faster and the visual changes we receive through facebook http://www.facebook.com/luderitzspeedchallenge.

Up to now it is interesting to see is that control=speed is valid, but there is a catch.
Looking to the board position of the leaders in the rankings it is very much equal to lightwind efficiency speedruns. Not saying that it is lightwind or easy over there... It doesn't look completely like the previous records where efficiency was not this important.

I stick to Antoine and Anders, but there are a few other good examples too. Both Antoine and Anders manage to keep LwL (lenght waterline) most stable and short on average compared to others. This has too do with time on the course, skills and ability of finding/making the best solution for stable platform. After a few days when everybody optimized their equipment I wonder what the differences will be and who will lead??

The fact that Antoine did the best time by changing down from 5.8 to 5.4 is giving me confidence in this analysis. A smaller sail has behaviour of less movement/influence on boardposition and easier to accelerate or hold on to a long acceleration.

What will happen in even higher wind???
 It will be interesting, outcome will tell a lot about (future) speed windsurfing. 2 scenarios:
  1. Course gets a bit more rough meaning the boards nose gets smashed/pushed up a bit more, LwL should be a tiny bit longer/ lower nose to support a stable position. More stress/force though on body and maybe here is a slight problem (causing speedlimit?)
  2. Course doesn't change much, efficiency ride still possible?? Maybe the efficiency ride is the only way to go faster??
Below video of our dutch speedhero Jurjen, the only one without added weight. It gives a good view on the course. I bet with a bit more time on (awesome speed)water Jurjen will smash the Dutch record again.

5 Responses:

Anonymous said...

What about the drag (air resistance) at this speeds can it get a limiting factor for windsurfers? And how it is compared to the kiters? Now with the sailrockets 59kn there's some room for improvements. Maybe a specialised board and sail just for the conditions at Lüderitz could give some extra percent in 2013. But lets see whats even now possible with maybe nuclear winds in the coming days

Erik Loots said...

Drag is definitly big, otherwise we would do twice the windspeed in 30kn.

Air resistance, but more important the losses made by turbulences. Any movement (by chop or windgust) is a potential drag increasement or speed increasement, difference is made by human power, equipment and skill.

mille said...

Quite interesting the data form Juriens 50kn run on his facebook vid. Constantly accelerating on the 500m, so with maybe higher entry speed and the right gust on the first 100m into the run, 52 knots are for sure possible.

Anonymous said...

Regarding fins , saturday Antoine used the 16 asy mxr with success because he was faster than AB , then he change to gasoil because in the middle of the run he needed more power and he broked is 17 mXr when he fall down and also 18 mXr asy ! this can explain why he change for Gasoil !
Jurjen win two days with mXr and since the beginning of the competition , mXr win 4 days against 2 for Gasoil , both fin are completely different , two different asymetrical concept G10 vs Carbon with similar results , we will see what happen in strongest conditions

Erik Loots said...

I was just surprised to see Gasoil on top, as did a few others notice. It is definitely worth mentioning!

Gasoil seems to do many things and I saw a few fins, nothing very special I always thought. But I never knew they had such skill for specialized speedstuff. For me a bit of wolf in sheep clothes feeling.

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