1.2 mtr keel bulb weight  
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1.2 mtr keel bulb weight - 7/15/2008 12:37:34 AM   
sirmong


 

Posts: 9
Joined: 8/30/2004
From: ulladulla, AUSTRALIA
Status: offline 		Hi all just built a 1.2 mtr sailboat the hull is a close copy of the entz just wondering if anyone could tell me the approx weight to make the keel bulb thanks all New Sailor
       Post #: 1

RE: 1.2 mtr keel bulb weight - 7/15/2008 7:20:09 AM   
Guiri


 

Posts: 158
Joined: 1/5/2005
From: AvilesAsturias, SPAIN
Status: offline 		The best thing to do is to try a flotation test and see how much ballast in the form of lead shot is needed to float her on the water line (after allowing for the radio equipment). It'll also give you a good idea of where the bulb should be placed to ensure fore and aft trim.

(in reply to sirmong)
       Post #: 2

RE: 1.2 mtr keel bulb weight - 7/15/2008 11:37:24 AM   
mfr02


 

Posts: 256
Joined: 7/23/2007
From: BlackpoolLancs, UNITED KINGDOM
Status: offline 		Test float sounds right - have about 2.5 kg available. Of course, its up to you to figure out just where the ideal waterline is going to be. Dont forget the weight of the ails, masts & rigging as well as the radio gear. It all counts.

(in reply to Guiri)
       Post #: 3

RE: 1.2 mtr keel bulb weight - 7/18/2008 8:28:31 PM   
tatolazo


 

Posts: 366
Joined: 7/7/2003
From: concepcion, CHILE
Status: offline 		Hi:Marblehead class sailboats with a little over 1.2 meter long hulls have a bulb of 3.5 kg. or so. Just check some rules for that "M" class and you will be very close to your needs.

Hope this can help.

tatolazo

(in reply to mfr02)
       Post #: 4

RE: 1.2 mtr keel bulb weight - 7/19/2008 11:34:18 AM   
mfr02


 

Posts: 256
Joined: 7/23/2007
From: BlackpoolLancs, UNITED KINGDOM
Status: offline 		Marbleheads, being a development class, will probably not have any rules regarding bulb weight. The restrictions happen upstairs with sail area and mast height.
The test float/ballast to determine the weight remains the best option.

(in reply to tatolazo)
       Post #: 5

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