foiling 18

[Jundt]

BARONVONRORT
THANK S FOR YOUR POST AND REMARKS HERE MY ANSWERS


Good video

NOT TOO BAD KNOWING THAT JP FILMED AND HELMED THE MOTORBOAT AT THE SAME TIME


yet the wind does not seem to be 15-18 knots maybe its the youtube video quality but it does not appear to meet beaufort scale criteria for windspeed.

POSSIBLY TRUE THE WINDMETER SITS ON THE ROOF OF THE CLUB HOUSE SAY 10 M ABOVE LAKE LEVEL, THE WIND HITTING THE SAILS MIGHT BE SLITLY LESS

ANYWAY IT WAS GUSTY CONDITIONS AND THE WIN COMES DOWN THE LAKE IN "FUNNELS"


It looks like some waves are causing big problems...lol.

IN GENERAL THE WAVES ALWAYS CAUSE PROBLEMS HERE, THEY ARE SHORT AND STEEP, AT MORE THAN 20 KNOTS IMPOSSIBLE TO SAIL DOWNWIND IN A STANDARD 18 FOOTER, YOU JUST PITCHPOLE IN THE WAVES WHEN YOU FALL OFF IN GUSTS, HOPEFULLY WITH FOILS THIS PROBLEM WILL BE SOLVED IN THE FUTUR

OUR PROBLEM IN THE FILM WAS CLEARLY WAND ADJUSTEMENT :
- NOT ENOUGH PRESSURE ON THE WAND
- WAND POSITON TO FAR FROM THE CENTERBOARD, EXACTLY HALF A WAVE LENGTH TO FAR
.... THE WAND PUMPED THE BOAT ON EACH WAVE, CLASIC REGUKATION PROBLEM

I DID SOME THEORETICAL AND PRACTICAL WORK THIS WINTER AND HOPE THAT THE NEW WAND CONFIGURATION WILL BE BETER, I AM ALSO WORKING ON A DAMPER (NICE TO LOOK INTO THE PHYSICS BOOKS AGAIN AFTER 30 YEARS)


It looks like a pretty soft place where you sail with lighter winds and flat water

WE ARE BEGINNERS (IN FOILING) SO FOR THE ROUGH STUFF WE WILL WAIT UNTILL WE MANAGE MORE CONTROLE


and i know flipper has some unresolved issues downwind in much bigger waves with his foiling 18 on sydney harbour.

I WOULD BE GLAD TO HAVE HIS INPUT AND PHOTOS OF HIS SET UP


How long does it take you to launch the boat from it touching the water with the cradle till you set off?

10 MINUTES WHEN NOT TOO MUCH SPECTATORS AROUND
BASIC IMPROVEMENT COMING UP IS A RUDDER CASE FIXED TO THE BOAT, THIS WILL HELP TO BE QUICKER


Looking forward to some video with good 2nd rig conditions.

AS I SAID THE ROUGH STUFF HAS TO WAIT

AND BASICALLY WE WILL PUT MORE EMPHASIS ON THE LOWER WIND LEVELS, WHICH MEANS LEARN TO TAKE OFF AT LOWER SPEEDS, THAT IS WERE THE BIG GAINS ARE

WE WILL START SAILING AGAIN AT EASTER

SO YOU WILL HERE FROM AS SOON

THOMAS

[Jundt]

Originally Posted by tspeer

I am very impressed by the learning curve over just three outings. Flying steadily is a major achievement, especially in such marginal conditions. The angle of attack is quite high - the foils are evidently just below stall.

I'm also impressed by the improvement in height control. Not only is the boat flying, but the crew is not flying too high.

Hi there
i just want to give some news of our project

This season we were working on :
- rear foil trim and flap control system
- wand trim and forme
- sail shape
- boat handling

We are very pleased to say that our flying 18 is working very well


Picture 1

15 - 18 kn true wind
we are running 145 ° off the true wind at max speed 22.6 which is a new record



Picture 2

Same wind but with 30 sqm genaker up
same angle but slower max 19 knots




Picture 3

Lateral view showing good level flight at controled hight




Future improovements
- new boat lighter
- moth like hull for good none flying performance

Regards

Thomas

NB : more details at

www.dailysail.com
http://www.dailysail.com/ism/article...art=1&Count=15

Check this out:
website: http://www.sui92.ch/main.html?src=%2F
Video of #2: http://www.pickle.com/sui92/103/556209

This is a heads up: very shortly one of the most revolutionary 18' sailboats to ever touch water will be unveiled. Stay Tuned.

[wind_apparent]

this is great, I hope it revives the 18" skiff class, because apparently if more people don't start gambling at yacht clubs in Australia the class will be gone for ever............. (stop before you rune everything )

More here:
http://forums.sailinganarchy.com/ind...&#entry1671375

[Chris Ostlind]

Originally Posted by Doug Lord

This is a heads up: very shortly one of the most revolutionary 18' sailboats to ever touch water will be unveiled. Stay Tuned.

Well, incrementally different, to be sure, but revolutionary...? Strip away the Tupperware plastic on the Rave foiler and you'll see a similar, space frame structure

A little research on available structural material for their project would have led them to a truly innovative carbon solution called ISO-Truss for their tubing. I suspect that they would have saved weight, enhanced the aero component and significantly reduced any drag associated with waves and spray.

Check it out here: http://www.isotruss.org/

Below is a shot of the tubing being used for the frame of a mountain bike.

[Chris Ostlind]

There's a bit more on this over at SA
http://forums.sailinganarchy.com/ind...howtopic=71717

Complete with these images as seen below

[bistros]

Originally Posted by Chris Ostlind

There's a bit more on this over at SA
http://forums.sailinganarchy.com/ind...howtopic=71717

Complete with these images as seen below

Folks:

Perhaps you should start a new thread for this 18 foot long space frame foiler.

This is not, nor ever will be an 18' skiff. It does not share any history with historic 18' skiffs in any way.

It's kind of rude in a way that this effort continues to be promoted as an 18. It's like the foiling developments are being coat-tailed on an established class, gaining attention via association. I'm all for open development efforts, but they should be promoted on their own benefits, not the efforts of others that have gone before them.

This "boat" (for lack of a more suitable description) breaks a lot of new ground and serves as a great testament to it's design team.

It will be interesting to see how it performs.

Having had extensive personal experience crashing and pitchpoling high performance skiffs, I'm glad this boat will be tested in a civilized country with universal health care. I don't know how much fun that space frame will be for a crew on the wire as they go down the mine at 20+ knots.

[Chris Ostlind]

Good Idea.

The discussion on the Swiss, Space Frame Foiler has been moved to a new thread here:

http://www.boatdesign.net/forums/sho...903#post198903

Come on over and take in the discussion.

No one claims this fantastic new 18 falls within the 18 skiff rules. In fact this 18 is the most advanced monofoiler ever to touch water and its relationship to the 18 class is irrelevant. Congratulations, Thomas!!

[Chris Ostlind]

Originally Posted by Doug Lord

No one claims this fantastic new 18 falls within the 18 skiff rules. In fact this 18 is the most advanced monofoiler ever to touch water and its relationship to the 18 class is irrelevant. Congratulations, Thomas!!

By the way, Doug, you are welcome to take your comments over to the new thread which deals, specifically, with this space frame boat in Switzerland.

I'm going to lift your quote and take it over there now, seeing as it relates directly to the boat in question. We wouldn't want to disrespect Ilett and his original thread topic.

For those interested in exploring the concept of a forward vertical fin here is a link to Bill Roberts "Shared Lift" concept:
http://www.aquarius-sail.com/catamarans/arc21/index.htm
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I think the forward foil may be a real important design innovation for any monofoiler since it will drastically increase pitch stability.Way to go Thomas!

Originally Posted by Chris Ostlind

By the way, Doug, you are welcome to take your comments over to the new thread which deals, specifically, with this space frame boat in Switzerland.

I'm going to lift your quote and take it over there now, seeing as it relates directly to the boat in question. We wouldn't want to disrespect Ilett and his original thread topic.

-----------------------------------
Sorry, Chris I think the new boat is complimentary to the original thread which is titled FOILING 18- which this new boat is. This thread covers all the development that lead up to this remarkable new boat. And no other thread could possibly develop the discussion as well as this thread and be so easily found in any search in the future.

[wind_apparent]

Originally Posted by Doug Lord

-----------------
I think the forward foil may be a real important design innovation for any monofoiler since it will drastically increase pitch stability.Way to go Thomas!

if that catches on, whats goint to happen to all the BR's that are out there with normal foil placement? They said they wouldn't change their design didn't they? poor one design in a development class guys