Mirabaud-Super Foiler!

Mirabaud LX

New pix-and a new record-awaiting more info...

 

Latest: 23 knot over 1km, and rumour of boat broken?

- first, On Mirabaud LX's site I read about a first record attempt on a 1km course, they've established 23 knots. Which clearly the M28 or D35 multihulls on Lake Geneva, should be able to beat easily. Though it's less clear which monohulls can beat it easily (but yes some Moths have been clocked over 25 knots).


- second, over the week-end and from two friends, I heard that Mirabaub LX had recently made an attempt against the Ruban Violet, ie Geneva to the end of the lake and back, but broke during that attempt. I've not been able to find any update on the web about this? If confirmed it would obviously be quite sad.

 

Mirabaud Super Foiler

Interesting presentation by Thomas Jundt:
http://www2.jundt.ch/blog/?p=275

 

Mirabaud Super Foiler

Thomas is adding a new hull- http://www2.jundt.ch/blog/
old hull shown in rendering with rig and picture under sail:
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Update 4-15-09: Thomas says the modified boat ( new hull, 70% stiffer top mast, new wand system and optional forward wand) will be sailing within a week.

 

Mirabaud-Super Foiler

Here are some extraordinary pictures and a video of the boat flying w/o the hull:
video here: http://www2.jundt.ch/blog/
click to enlarge photo's---

 

plus ca change, eh
the formidability:kookiness ratio still seems a bit off.

 

Mirabaud-Super Foiler

Just found out from Thomas that the team is experimenting with manual altitude control-the bowman controls the main foil flap. Thomas says it works quite well-they just have to develop a system to do it with the bowman on the wire. Another way to reduce drag and weight....

 

Mirabaud wins!

Congratulations to Mirabaud for winning the Geneva-Rolle-Geneva classic(monohulls)-beating Full Pelt and others!
http://www.sailkarma.com/2009/06/geneve-rolle-geneve.html
Oops! capsize after winning....

 

The foiler: 3 hours 43 minutes.


The Décision-35 catamaran Okalys-Corum with Loïck Peyron of France took line honours in the Genève-Rolle-Genève race, completing the course at an average speed of 20 knots but failing to the break the record of 2 hrs 7 minutes by just 4 minutes.

The catamaran: 2 hours 11 minutes.

 

Anyone know how that compared to the best 18 foot multhulls ? (F18HP I guess)

Whatever, quite an achievement to get sorted to a race winning state and good luck for the bol'dor

 

Mirabaud Super Foiler

What I do know is that Mirabaud and a Bladerider(I think) were nearly identical in speed over a measured kilometer last year and that another foiler Moth several years ago beat separate fleets of F18's and A Class cats around a course. And Thomas thinks the boat is much improved this year.....
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Found this interesting tidbit on Rohan Veals site:
So I am not sure what the Foiler Moth Yardstick is going to be for 2009/10, but I would not be suprised if it is in the low 70's or even high 60's now. This would then put the Foiler Moth in the same league now as the A Class (71), F18 (70), 18' skiff (68), Taipan 5.7 with kite (67.5) and Tornado (65). Looking at these numbers though, I think the 18 footers should be around 65 with the Tornado and we should be around 68-69.
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Here is a video of a Moth and A class from Marco Cassavechia and his comments:

 

As you can see, the resident blowhard of foiling doesn't have an answer to your question, but had to spout off.

The results seem to indicate there were only two types of multis in the race, the D35s and the M2 Class (Formula 28?).

EVERY Multi in the race finished ahead of the foiler.


http://www.ycg.ch/images/files/FinalClassementMulticoques.pdf

 

Mirabaud LX

From Scuttlebutt Europe:

Mirabaud LX Will Take Part In Weymouth Speed Week
Click on image to enlarge.

Geneva, Switzerland: The famous foiler Mirabaud LX and his skipper, Swiss engineer Thomas Jundt, are getting ready for Weymouth Speed Week (October 16-22).

Weymouth Speed Week exists since 1972; it is one of sailing's mythical events. The speed week has been a meeting point for sailing fans, designers and inventors for decades. Kiteboards and windsurfs have taken over recently, yet Weymouth Speed Week remains a dream for Thomas Jundt and a fantastic environment in which to test his foiler and share views with other speed sailing fans.

"Icarus, the Tornado with hydrofoils, has been a source of inspiration for me", explains Thomas Jundt. "This boat - and so many others - have been conceived especially for Weymouth Speed Week. It is fantastic for me to be able to join this legendary event with the Mirabaud LX."

Geneva based sailors jean-Pierre Ziegert and Jean-Marc Monnard will sail on board Mirabaud LX as crewmembers, replacing the usual crew of Antoine Ravonel and Eric Gobet. "Our goal is to validate the changes we have made this year", explains Jundt. "We are going to be able to fly during four hours every day in ideal conditions, with a lot of wind and no waves. We will probably achieve more in a week than we have done over the entire year in Geneva."

Jundt has developed new foils for this season, and relies on Weymouth Speed Week to top up the 25 knots barrier over 500 meters, and to reach over 28 knots on shorter distances. "As far as today, the best we can do is 21 knots over 500 meters and 23 knots on shorter distances. Our new foils should allow us to gain 2 to 3 knots."
www2.jundt.ch/blog/

 

Anyone knows why was the trusswork left exposed? It is a high-drag structure.

 

They did it as an experiment with the intention of, perhaps, skinning it someday. You're absolutely right about drag, in the Bill Beaver paper on the Moth aerodynamic drag-particularly for the crew- was surprisingly high as a percentage of total drag.