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  #1  
Old 06-08-2015, 07:24 AM
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Quant 23 Foiler Scow

This boat is just beginning production and is the largest production monofoiler in history. It is being developed by Michael Aeppli and Quant Boats. Hugh Welbourn designed the boat. See the pdf below:
click for best view:
Attached Thumbnails
Quant 23 Foiler Scow-q23_1_light-2.jpg  Quant 23 Foiler Scow-q23_2_light-first-test-sail.jpg  
Attached Files
File Type: pdf Q23 with multifunctional foilsystem.pdf (773.8 KB, 1101 views)
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  #2  
Old 06-08-2015, 12:14 PM
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Quant 23

This boat is also the very first fully foiling keelboat!
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  #3  
Old 06-08-2015, 01:47 PM
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Indeed, very interesting !
Good finding Doug, thanks.

pogo
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  #4  
Old 06-08-2015, 02:10 PM
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Quant 23 Foiler Scow

You're welcome!
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  #5  
Old 06-08-2015, 02:28 PM
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Quote:
Originally Posted by Doug Lord View Post
This boat is also the very first fully foiling keelboat!

Do you think that the ballastbomb is necessary, i don't.
It's a monomaran.



pogo


P.S.
I've sailed non ballasted centerboarders ---monomarans!---up to 10m half of my life , racers and cruisers--- Jollenkreuzer.

See Waterlinebeam of a modern 30er cruiser/Racer, like a heeling scow:
http://www.yacht.de/typo3temp/pics/c_bcf54f80e8.png
http://www.bootswerft-christen.de/30-jollenkreuzer.html
Those box rulers really show what evolution means. Steel 25er c/r ,designed in the 40s ( sistership of my old boat
http://fky.org/marktplatz/bootsmarkt.../mueller-r.htm
30er cruiser;steel
http://30erjollenkreuzer.de/
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Old 06-08-2015, 02:45 PM
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Searching pix of the first foilborne monomaran--conversion of a 470 standard dinghy by frenchman Claude Tisserand in 1974--i found more about quant:

http://www.quant-boats.com/news.html

pogo
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  #7  
Old 06-08-2015, 02:59 PM
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Quant 23 Foiler Scow

Quote:
Originally Posted by pogo View Post
Do you think that the ballastbomb is necessary, i don't.
It's a monomaran.
pogo
P.S.
I've sailed non ballasted centerboarders ---monomarans!---up to 10m half of my life , racers and cruisers--- Jollenkreuzer.

See Waterlinebeam of a modern 30er cruiser/Racer, like a heeling scow:
http://www.yacht.de/typo3temp/pics/c_bcf54f80e8.png
http://www.bootswerft-christen.de/30-jollenkreuzer.html
Those box rulers really show what evolution means. Steel 25er c/r ,designed in the 40s ( sistership of my old boat
http://fky.org/marktplatz/bootsmarkt.../mueller-r.htm
30er cruiser;steel
http://30erjollenkreuzer.de/
====================
Michi says it's there so the boat won't turtle.......
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  #8  
Old 06-08-2015, 03:01 PM
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Quote:
Originally Posted by pogo View Post
Searching pix of the first foilborne monomaran--conversion of a 470 standard dinghy by frenchman Claude Tisserand in 1974--i found more about quant:

http://www.quant-boats.com/news.html

pogo
===================
The first monofoiler, I thought, was Frank Raisin's Moth*.
I was wondering if those guys were trying to find a clever way to use DSS without paying the royalty-I hope Hugh nails them.....

*UPDATE: Frank Raisin-the first foiling Moth-1972: http://www.foilingweek.com/2015/04/m...-foiling-moth/
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  #9  
Old 06-08-2015, 03:09 PM
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pogo pogo is offline
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Quote:
Originally Posted by Doug Lord View Post
====================
Michi says it's there so the boat won't turtle.......

Phhhhh ...

It's an alibibomb.

Ik denk ik prei 'n Michi ma' direktemang an.
( Ich glaube ich spreche den Michael einmal direkt darauf an)




pogo ( multilingual multihuller)
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  #10  
Old 06-09-2015, 06:20 AM
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Quant 23 Foiler Scow

From Scuttlebutt last night:

Designer Hugh Welbourn has spent more than 10 years developing the patented Dynamic Stability System (DSS), which comprises a retractable hydrofoil that is deployed to leeward on a yacht.

The foil provides vertical lift to leeward, improving the yacht’s righting moment, an effect similar to having extra crew on the weather rail or a bigger keel bulb, and in turn dramatically increases performance.

DSS foils feature on a wide range of racing yachts such as multiple Rolex Sydney Hobart winner, Wild Oats XI, to the high performance Infiniti range of racers and cruiser races to sportsboats, Minis plus all manner of craft between.

However the very latest DSS foils not only provide righting moment, but extra vertical lift beneath the boat too.

In its first preliminary sea trials in Cowes last week, the Quant23 has proved itself to be one of its first – if not THE first – fully foiling keel boat. The DSS foils, in combination with a T-foil rudder, has enabled the Quant23 to sail fully airborne.

- See the rest of the article at: http://www.sailingscuttlebutt.com/20....8jXYNuOu.dpuf
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  #11  
Old 06-17-2015, 01:32 PM
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Quant23 and Hammell's Zipper

A bit striking to me anyway - how the hullform is so reminiscent of the scow I've been using as a prototype for my own 18' scow.

The "Zipper" scow was developed by Dave Hammel (MIT) and Sam Rabl

See attached
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Quant 23 Foiler Scow-image004.jpg  Quant 23 Foiler Scow-image002.jpg  
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  #12  
Old 06-17-2015, 04:34 PM
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Very interesting,Tom-thanks!
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  #13  
Old 06-18-2015, 07:19 AM
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Doug
Scans of the full original article can be had at this link
http://www.polysail.com/Zipper.htm
thanks to Dave Gray at PolySail.com
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  #14  
Old 06-18-2015, 08:09 AM
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Much better, Tom. Thanks again.
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  #15  
Old 06-24-2015, 10:03 AM
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Doug Lord Doug Lord is offline
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Quant 23 Foiler Scow

Q23 flying: https://www.youtube.com/watch?v=fcNT...ature=youtu.be
__________________
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WOLF-daughter of fire arrow
Fire Arrow Foil System-small and large trimarans!
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