51.36 knots

.... for geezers who like to go way too fast!
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caribcat
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Sun Sep 06, 2009 11:47 am

Alain Thébault's foiler trimaran L'Hydroptere on Friday set a new outright world record on the 500m long course off Hyères averaging 51.36 knots with a peak speed of 55.5 knots. The record, which has yet to be ratified by the WSSRC, was set in 28 knots of wind from the west.
Ade G
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Location: West Cumbria

Sun Sep 06, 2009 6:47 pm

Thats amazing, how scary must that speed feel, you wouldn't want to trip over an edge

Question : whats the fastest you can go for any given wind speed, theoretically speaking (not counting friction etc)

I guess there must be a formula to work it out??
davo
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Mon Sep 07, 2009 9:35 am

Its an impressive boat to watch
http://www.youtube.com/watch?v=Wr3F-K9- ... edded#t=24" onclick="window.open(this.href);return false;

If all of us speed kiters had just 1 years of there budget shared betweeen us for development it would be very interesting to see how fast we could push it. But as it is we probably dont even have 1 days worth of the the money that that boat has going into the development of speed kites.
david_hazell
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Mon Sep 07, 2009 10:41 pm

Kiters will reign supreme once more. R&D costs will be nothing compared to those boats! How much do you think a set up like that must have cost? How many millions? And we rock up with a grand and a half's worth of kit and only just get bested by a technological triumph like Hydroptere...

Things are gonna get interesting... Someone go and have a crack on that nice looking RRD Speed board and some upwind screaming kite like a REV or a Nemesis and put those sailor boys back in their box!!!
davo
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Mon Sep 07, 2009 10:51 pm

david_hazell wrote: Someone go and have a crack on that nice looking RRD Speed board and some upwind screaming kite like a REV or a Nemesis and put those sailor boys back in their box!!!
Is RRD doing a speed board?

Your right about the Nemesis for speed though it works very well.
elbastaardo
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Tue Sep 08, 2009 3:21 pm

kitesurf mag printed that our post 50knot heros run had been ratified once and for all, is this not the case now?
Pyro Tim
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Tue Sep 08, 2009 3:23 pm

elbastaardo wrote:kitesurf mag printed that our post 50knot heros run had been ratified once and for all, is this not the case now?
no, this is a yacht that has beaten the kitesurf mark, and they are waiting for the latest record to be ratified.
elbastaardo
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Wed Sep 09, 2009 6:52 pm

Pyro Tim wrote:
elbastaardo wrote:kitesurf mag printed that our post 50knot heros run had been ratified once and for all, is this not the case now?
no, this is a yacht that has beaten the kitesurf mark, and they are waiting for the latest record to be ratified.
oh no! better get me speed board out again then!!!! :lol:
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samski-d
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Wed Sep 23, 2009 11:12 pm

Ade G wrote:Question : whats the fastest you can go for any given wind speed, theoretically speaking (not counting friction etc)

I guess there must be a formula to work it out??
i had a think about this a while ago. kite cant travel downwind faster than the wind. depending on its angle to the wind you can work out its downwind component. eg if it is straight downwind, max speed is the windspeed. if it is perfectly at the edge of the wind it has no downwind component so it can keep pulling and pulling, so infinite.

a simple 45 degree would be double the windspeed. other angles you need to pull out the trusty old sin and cos :)

i think there are so many other factors that come into this such as friction etc etc and a model can be built up, but you did say theoretically :)

edit: scrap that! http://www.kiteboarder.co.uk/kitesurfin ... 65&t=26374" onclick="window.open(this.href);return false;
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