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  #61  
Old 06-28-2016, 09:52 AM
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Quant 23

Q23 boat info package updated June 2016: http://www.quant-boats.com/documents...2016_light.pdf
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  #62  
Old 06-30-2016, 05:30 PM
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Dominion 2-HW

The D2 has reached a major milestone-it's now RED! This is an RC model inspired by the Quant 23 and by the 1898 version of Dominion. It will become a self-righting foiler. Plenty of work left but it's starting to get a bit exciting. Build Log: http://www.rcgroups.com/forums/showt...1#post35150524

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  #63  
Old 07-02-2016, 01:13 AM
sigurd sigurd is offline
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Love the voluptuous yet slender and pointy catascow, except what you did to the bows when you took away the deck. In the old days bows were made to resist submerging. Modern, reverse bows are so good because they can resurface easily, and because they have little drag when submerging, making the stop slower and a recovery possible.
You seem to have made a big scoop with a powerful downwards force, should it ever find itself under water. Also, what of the poor, soaked wet hamster crews in the cockpit?
Side note, the bow wing may help, but then dynamic lift always comes with drag, exaggerated at slow speed, and in a pitchpole, the boat is verily stopping, making lift induced drag seem an issue - and it is drag that is tripping the boat. Hard to say, interesting to see.

ps. I think your catascow is going to be faster than the quant - voluptuous, yet slender pointy things they are.
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  #64  
Old 07-02-2016, 07:56 AM
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Dominion 2-HW

Thanks, but I don't think the midship section will ever see the water. This boat is a self-righting foiler that will foil in a 5mph breeze(4.35 knots). Don't have to worry about big waves because, like any scow, it will be sailed in conditions that suit it.
I've used a +6 degree forward wing on models 20 years ago-and it works 95% of the time-but on this boat I imagine it will rarely get its chance.
We'll see!
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  #65  
Old 07-02-2016, 02:06 PM
sigurd sigurd is offline
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Not just the midship section, the bows insides too. It's ok to make a boat that only work in flat water, but do you have a reason for those features? What if I got me a scow, for sailing in a fjord, then there comes a motorboat, or the wind is from the long side of the fjord, I pitchpole, then I'd like to say, well ok, not the best rough sea hull, but it is like that for x reason.
I mean, it's a model, I don't have a contention - it'll be interesting to see what happens.
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  #66  
Old 07-02-2016, 02:29 PM
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D2

There isn't a problem-the little side "lips" lift with any waves and the midship section is too far back to be a problem especially considering that the foils will be lifting in virtually all conditions. This thing isn't limited to just flat water any more than a normal scow is and -again- the foils change everything. The foils dictate the conditions the boat can sail in not the hull.......

The reason for the shape is that I had originally designed the boat more like Dominion with a full deck but after I got the thing started it seemed like that was just too much and would accomplish nothing but adding weight. So I spent a lot of time trying to figure a way to get rid of the extra weight and windage(when 90 degrees) and came up with this after many, many hours of trying to find a solution.
The pictures below show what the original design would have looked like:

click on picture for larger-
Attached Thumbnails
Quant 23 Foiler Scow-2007-01-14-13.25.37.jpg  Quant 23 Foiler Scow-2007-01-24-15.04.08.jpg  Quant 23 Foiler Scow-2007-02-12-10.46.38.jpg  

Quant 23 Foiler Scow-2007-02-12-10.48.17.jpg  
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  #67  
Old 07-02-2016, 07:47 PM
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D2

And finally this:



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  #68  
Old 07-02-2016, 07:53 PM
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Quant 23 and D2 foils

Foils from the top: 1) production Q23 foils, 2) Q23 proto stb foil, 3) D2 stb foil, 4) D2 foils, keel + rudder:







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  #69  
Old 07-02-2016, 09:29 PM
sigurd sigurd is offline
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Ah yes - in that case I like how you solved it.
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  #70  
Old 07-06-2016, 11:53 AM
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Quant 23 Foiling Scow Keelboat

The Quant 23 is one of the boats you can learn to foil on at the Stickl Foiling Camp on Lake Garda: http://stickl.com/FOILING_Lake_Garda-2-229.htm
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  #71  
Old 07-14-2016, 05:57 PM
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Quant 23 Inspired Dominion 2-HW RC Foiler

Getting more done:

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  #72  
Old 07-31-2016, 04:12 PM
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Quant 23-Light Air

Light air semi-foiling: https://www.youtube.com/watch?v=d-3Y...ature=youtu.be
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  #73  
Old 08-11-2016, 09:37 AM
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D2 with "B" Rig and Foils

Making Progress-smaller of the two rigs. The main is reefable and jib is removable so you could call this the "B" and "C" rig:
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  #74  
Old 08-11-2016, 09:52 AM
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Quant 23

New video of the Q23 proto from onboard:

https://www.youtube.com/watch?v=Y-l1D_GSleM
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  #75  
Old 08-29-2016, 09:58 AM
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Quant 23 Foiling Scow Keelboat

New article-"A Keelboat that can Fly"(in German) : http://www.nzz.ch/mobilitaet/auto-mo...kann-ld.111293
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