take a look at this new pocket racer

[mistral]

Hi guys, take a look at this video http://rapidshare.de/files/26316486/idea19.wmv.html
it's a 50MB video, so download it with a DLS or similar.
It shows the first IDEA19, a 20-footer trailerable pocket racer, in her first sail.
The boat has been launched about two months ago in ltaly, and she's wood-epoxy built by TLY shipyard in Jesolo, near Venice.
She's a deeply modified version of TLC19 designed by Dudley Dix in the '80's.
Ok, i have to confess that i'm the father of this creature, so don't be too rude with your citicism :-))
As you can see Unfortunately during the first test wind wasn't strong as we hoped :-((
I'm anxiously waiting for your comments and suggestions

fair wind
Mistral

[mistral]

i have to explain just one thing; i'm not trying to make any gamble nor to make anyone pay to download the video; rapidshare is a free host until you use it to download 100mb per hour.

Mistral

[mistral]

now the video is avalaible on google video a this link
http://video.google.it/videoplay?doc...83694184887526

good sailing!!
Mistral

[Chris Ostlind]

Very nice, Mistral. I'm sure that you and your friends are going to be enjoying many hours of fantastic sailing in the new, IDEA19. Are you also using the radius chine build techniques that Dudley likes to apply to boats of this type?

I like how you've put an additional chine on the interior surface to smooth the transition into the vertical cockpit sides.

Can you post additional drawings of your boat along with some specs as to keel form and the methods for making it trailerable?

Chris Ostlind

[Phil Locker]

I have to question putting twin rudders on a narrow 19 foot boat. You'd reduce complexity and likely increase performance with a properly sized single rudder. Yes, they make sense on beamy miniTransat's, but...

(And while addressing complexity, do the loads really warrent putting winches on a 19 footer? Not my area, but makes me wonder)

Nice boat.
Phil

[mistral]

you can find further infos on the boat at http://www.nautikit.com/Idea19.htm ; the boat is not radius chined but strip planked; to say the truth building plans contains the scantlings to build her both in wood epoxy and in sandwiched GRP; a shipyard has asked me to develope an alluminium version; although i'm not very keen on small alluminium boat the boat is now finished and i have to admit that she's awesome;
-how can the boat be trailerable? She has a pivoting keel wich can be retracted completely within the hull, something like a 470 dinghy; retraction may be operated by winch or by hand with a removable 6:1 purchase; it takes a little more than 1 minute to raise the board up; the "pit" in the hull is closed by a plug wich fairs the hull lines.
-about rudders: the boat is not as beamy as a minitransat, but is quite beamy ( 2,28 x 6m), so i choose a double rudder solution, i agree with Phil that it's a little bit complex to build and fit, but gives you a good steering power no matter what angle you're heeling (with reasonable heeling angle of course...), or maybe it's just because i begin sailing on catamarans....; the twin rudders solution leaves the room to place a small (2-3 HP) outboard engine on a retractable bracket in the middle of the stern.
-about winches: a 2 winches arrangement may help you in strong winds, they're not strictly necessary, if you want to use the boat for sailing school you may simply half the load on jib sheet with a 2:1 purchase.
The 4 winches arrangement, like the boat on the video, has been requested by the owner to keep the classical scheme of bigger boats.

Fair wind
Mistral

[Stephen Ditmore]

Originally Posted by Phil Locker

I have to question putting twin rudders on a narrow 19 foot boat. You'd reduce complexity and likely increase performance with a properly sized single rudder.

Hi, Phil. Not sure I agree about the twin rudders. In light winds you might be right, but in a blow twin rudders can give you an extra measure of control, while being smaller than a single rudder would need to be to give you same.

The latest Volvo Ocean Race pitted two Juan Kouyoumdjian designs with twin rudders against several Bruce Farr designs with single rudders. The newer and wider of the two Kouyoumdjian designs left everyone else in the dust anytime they had a good breeze, and won easily. The other finished fourth, but could boast the fastest days run in the race. I come away thinking twin rudders do just fine.

'Gotta wonder how all this competition affected the collaboration between Kouyoumdjian and Farr as they worked together on the BMW/Oracle America's Cup designs (+Paul Beiker and others make it quite a design team)!

When you gonna bring your moth south? I hear lonely hound wimpers coming from Sag Harbor. Paul Lindenberg has his in New Hampshire.... want to meet there?

[Phil Locker]

Originally Posted by Stephen Ditmore

Hi, Phil. Not sure I agree about the twin rudders. In light winds you might be right, but in a blow twin rudders can give you an extra measure of control, while being smaller than a single rudder would need to be to give you same.

The latest Volvo Ocean Race pitted two Juan Kouyoumdjian designs with twin rudders against several Bruce Farr designs with single rudders. The newer and wider of the two Kouyoumdjian designs left everyone else in the dust anytime they had a good breeze, and won easily. The other finished fourth, but could boast the fastest days run in the race. I come away thinking twin rudders do just fine.

Its all about the beam of the boat - the Juan K boats were beamier than the Farr boats, one significant reason why the Farr's went with the single rudder and the Juan K's had twin rudders.

From the pictures posted of this boat, to my eye it just looked like it wasn't beamy enough to warrent the complexity of a twin rudder system.

Simply my point of view.

Originally Posted by Stephen Ditmore

When you gonna bring your moth south? I hear lonely hound wimpers coming from Sag Harbor. Paul Lindenberg has his in New Hampshire.... want to meet there?

The 'moth' (or whatever it is) isn't sorted out yet... just no time to play with it.