Hallo everybody,
I am interested in thorwing our brake... ehm keel away and create some deeper keel probably with lead bulb on the end. Old keel have triangular moulded iron balast on each side of the vertical plate with some wisible bolts-together it seems to be drag making element. Is there somebody who have any experience with choosing keel foil for Corsaire? NACA 63 or 64 series with 00 series bulb seems good for me.
Other questions are weight and area. In my set of plans this is missing but keel looks like its directly from plans.¨Displacement is 194kgs but in some reglement de series I have read something about 150kgs- but I dont know if it is for JOG or normal version. Its hard to find something about Corsaire JOG:-)
And is there any rule for keel of JOG which is conected with usage of yardstick handicap?
Thanks for any idea.
Jaromir

Je sais au lieu de le demander j'aurais pu le faire mais je n'ai vraiment pas le temps et je ne sais pas ou est mon dico français/anglais donc si un bilingue désoeuvré passait par là ce serait pas mal de traduire ce message comme ça il y aurait surement des réponses (qui pourront alors être traduites dans l'autre sens).
Je retourne à mes excuses pour ne pas chercher "keel" dans un dico en ligne.
ciao
Elodie

For Camel, I'm just asking for translation (asking other members, I know you'd have done it in french if you were french speaking). Bye

Salut à tous!!!

Que je vous explique en gros. Le Pb c'est que "Camel's english language is approximate" comme dirait mon tailleur arménien!!!
Le jeune homme a un Corsaire JOG avec quille en fonte d'origine... Il s'apperçoit que c'est un frein pour son bateau et commence à envisager des modifications que la morale ne réprouve pas, mais hélas la jauge!!!
Il veut savoir si quelqu'un a déjà expérimenté des choses pour remplacer la quille d'origine par un profil un peu plus performant que le sabot d'origine!!! Il a déjà potasser les Naca et les formes de bulbes. De plus il s'interroge sur le poids et la surface à choisir!!!
Le bougre a flairé le bon chantier!!!

Si notre Miss a un avis sur la question, je parle le chameau sans probléme!!!

Best regards, Camel. We look for an adequate answer with a right plan!!!

Amitiés.

Franck.

Hallo Franck,
translation with dictionary sometimes doesnt give us strict results. I am not sure but I hope that my english language is a little bit better than english of some armenian stonecutter:-).
About my idea of change of keel: total weight of Jog is aproximately 500kgs. Full loaded for cruise with two persons of crew it could be 700kgs. I can see huge difrence between sailing singlehanded and with crew of two. That means that saving from 60 to 90 kgs on keel I can get boat in the same position in water with crew and it will be faster in slow wind. Dont think about better foil shape which will help too.
What I can do when boat will be a ground is to take measurements of keel and find center of gravity and centre of surface. This should stay the same, just move down and deeper. But I am not sure if the old keel is on the best place and the shape could be on homebuilded boat little diferent from plans. So if the theory of keel for corsaire have changed in the past I would start building deeper keel based on the best measuremems available.
Ill be thankful if you show me your wievs about this cause.

Jaromir

Hey, Jaromir.

To answer to your question touching the keel of your boat, there is two
solutions:
¤So be it you not there to modify not to respect the gauge of the class.
¤So be it the gauge is not applied and to modify you your ballast as you wish him.
Normally the weight of gauge is of 560 kilogrammes (the boat is weighed completeness but without members ofs as teams)
The a possibilities is to replaced the current keel by a sheet metal of inox of the same depth and to put under to be sent to the blackboard him of the cabin a ballast of 100 leaden kilogrammes .
A something different imported: it must revolve the board of your rudder, you will give much less effoerts to do to control him. Your rudder will be vertical and more efficacious.

Best regards.

Franck

Salut à tous,

Pour les amis qui ont du mal à déchiffrer notre tchécanglais de contrebande, je résume...
Jaromir a un JOG, il trouve que sa quille est un frein pour le bateau et souhaite la modifier.
Sachant que chez lui la jauge est au Corsaire ce que la code de la route est aux chauffards chez nous, je lui préconnise de virer sa quille et de la remplacer par un voile en inox et de couler une lest de 100kg à plat-fond sous le plancher de cabine...
Bien évidemment je n'ai pas résister de lui intimer l'ordre de retourner sa pelle de safran pour avoir un safran digne de ce nom, c'est à dire droit!!!... Désolé Monsieur Herbulot, on peut pas être bon partout!!!!

Amitiés.

Franck

N.B. : Il est amusant de noter qu'il y a chez lui plusieurs Corsaire, constructions "amateur", qui ont pris quelques libertés avec les plans!!!

with a standard JOG keel, u've got aproximately a mass rectification moment of 150 000 N/m, and if u want to save 50 kg on the keel, you've to build a new one 1,45m deeper down the water line. all of these indications are very aproximatives, a quick head calculation, but it's to indicate you that if you want to save many weight, you'll have to increase a lot your draught. be carefull of your sailing area, check the depth before building a new keel

Antoine