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Kiwi led world speed record

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Just to shine some light on this subject (having a fair amount of professional knowledge of the field)

 

No-one is going to give you millions to do this. You might get to 10's or 100's of thousands but even that will be a push - there is just not sufficient public interest to generate the necessary sponsorship.

 

Waves are the big enemy - your hydrodynamic parts effectively need to be a certain size relative to the waves to operate efficiently so if you have small budgets you have small boats and need somewhere with small waves. Surprised no-one has mentioned NZ's pre-eminent spot of Glenorchy in Queenstown where you get high winds (30kt+) coming down the dart river valley and dead flat water often several times a week (basically whenever there is strong rain on the west coast). Lake Pukaki (Mt Aoraki) is potentially even better with 3-4km of dead flat water on a reaching course to the dominant strong wind direction.

 

Achieving ultimate speed is about doing many runs - 100's to 1000's. You will never get there if you can only do a couple of runs per day, particularly if you are campaigning in a spot that only gets good wind once a month. You need frequent 30-40kt winds and a craft that can do 50-100 runs per day to get in one where everything is just perfect. That's why windsurfers held the record and why kitesurfers do now even though specialist speed sailing boats probably have higher speed potential - they are just too slow at cycling through runs, too prone to damaging themselves when on the limit, and too slow and expensive to fix or modify.

 

It also costs a lot of money to have 'official observers' at the course to sign off on the accuracy of your speed runs, this can eat up significant portions of your budget.

 

Forget conventional hydrofoils for ultimate speed, they absolutely do not work for small craft over about 40-45knots due to the onset of cavitation, unless you are very large like hydroptere (gets away with higher speeds due to higher water pressures several metres down that delays onset of cavitation). You will never get the budget for boats that big unless you can find an interested billionaire or get a big name celebrity involved. Realistically it is a small planing craft with supercavitating fins or nothing.

 

Also forget sailing rigs and wings - far too expensive and easy to break in a machine that is on the limit. As well as entailing all sorts of problems with creating and controlling the necessary righting moment, this fundamental problem is what leads to the boat destroying high speed crashes that plague speed sailing (which is what ultimately sinks all such projects), but isn't an issue for kites. Kites really are the only answer for realistic budgets, but need to be bigger and stronger than standard kitesurfing kites.

 

Fortunately you have one of the premier traction kite designers in the world living in Ashburton (Peter Lynn) as well as his son (also Peter Lynn living in San Fransisco) who was involved in the kite sailing project mentioned up-thread http://project.kiteboat.com/ They are both engineers who are very interested in speed sailing. Peter senior has been designing and building sailing and kite-sailing craft for 35 years, invented the kite-buggy, and invented 3 types of ground-breaking traction (motive force) kites, one of which (The Arc) is the highest lift to drag and most scalable traction kite in existence. Also did 30kt on a crude self built hydrofoil cat over 20 years ago. They are both close friends with land sailing speed record holder Richard Jenkins who also worked at the kite sailing project just mentioned. I have known these guys for years and they would be the sort of people who could break 60knots quicker and cheaper than anyone else in the world, but would still need a budget of probably $1-200k to develop the boat and get the campaign done, probably less if others were doing the boat and fin construction.

 

Finding the money is the hard part.

 

Fully agree with all this.

 

I Spent time in Ashburton at the Lynns over a xmas break while Pete jnr was first starting to experiment with crude foils.

 

Interesting stuff.

 

Pete Lynn Snr has experimented with all sorts of strange craft over the years testing hulls.

planning cats with A class rigs (which I broke when a shakle let go) - planing trimaran with steering done from a front central hull (complete with tornado rig)

 

Most of this was all to experiment with portable hull forms for traction kite use.

 

I posted some links a while back.....There has got to be merit in pursuing traction kiting for a "pure" speed sailing attempt (ie not on a board- cool as that is- it's a different class to a "proper boat".

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OK Thanks for your post. Much appreciated. So, back to designing something, which takes the TriFoiler - the blue one - a step or two further; do you know anybody who has the smarts, who would be helpful in designing such a craft please ? Does anybody know anyone ?? Cheers. DHRB

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