Centerboard Sailors - SailNet Community
 
LinkBack Thread Tools
post #1 of 7 Old 09-06-2011 Thread Starter
Lake Sailor
 
cb32863's Avatar
 
Join Date: Oct 2009
Location: Minneapolis, MN
Posts: 713
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
 
Question Centerboard Sailors

A question for you folks that have a centerboard or have sailed with one. Do you adjust it as you sail or do you pretty much lower it down and forget about it?

Umquam Porro

S/V Papillon 1977 O' Day 25


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
cb32863 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 7 Old 09-06-2011
Senior Member
 
Join Date: Jun 2006
Location: Eastern Shore MD
Posts: 135
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 10
 
Drop it and forget about it until/unless it hits bottom...... Now if you're racing you'd want to raise it on your downwind run.
saillife is offline  
Quote Quick Reply Share with Facebook
post #3 of 7 Old 09-06-2011
Senior Member
 
OtterGreen's Avatar
 
Join Date: May 2011
Posts: 161
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
 
on my Santana i usually leave it down unless i know it is shallow. i prefer not to let it drag if possible. inside the channel i will leave it down until i hit the shallows, or when going downwind i will leave it at about a foot.
OtterGreen is offline  
Quote Quick Reply Share with Facebook
post #4 of 7 Old 09-06-2011
Member
 
whroeder's Avatar
 
Join Date: Aug 2007
Location: Palm Bay, FL
Posts: 89
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
 
Quote:
Originally Posted by cb32863 View Post
A question for you folks that have a centerboard or have sailed with one. Do you adjust it as you sail or do you pretty much lower it down and forget about it?
The angle of the board moves the center of effort, down too much gives too much weather helm.
If you have too much, turn into the wind and adjust.
On my Mac26X My rudders run start dragging before the CB does.
whroeder is offline  
Quote Quick Reply Share with Facebook
post #5 of 7 Old 09-06-2011
Senior Member
 
chef2sail's Avatar
 
Join Date: Nov 2007
Location: Maryland
Posts: 7,088
Thanks: 30
Thanked 58 Times in 54 Posts
Rep Power: 8
 
Send a message via AIM to chef2sail
Drop it on close haul all the way to broad reach, especially when the wind is over 15. Raise it broad reach to run.

Dave


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
___________________________
S/V Haleakala (Hawaiian for" House of the Sun")
C&C 35 MKIII Hull # 76
Parkville, Maryland
(photos by Joe McCary)
Charter member of the Chesapeake Lion posse

Our blog-
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


“Sailing is just the bottom line, like adding up the score in bridge. My real interest is in the tremendous game of life.”- Dennis Conner
chef2sail is offline  
Quote Quick Reply Share with Facebook
post #6 of 7 Old 09-06-2011
Member
 
5hortBu5's Avatar
 
Join Date: Jul 2010
Posts: 78
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
 
Depends on my attitude and mission that day. If I'm just mucking about in a boat, especially solo, I'll set it around halfway and just forget about it. If I'm trying to get somewhere, or playing with sail trim or have a couple extra hands aboard, I'll adjust based on my point of sail. Down for beating, halfway for reaches, and up for dead runs.
5hortBu5 is offline  
Quote Quick Reply Share with Facebook
post #7 of 7 Old 09-06-2011
Member
 
Join Date: Jun 2010
Location: Michigan
Posts: 84
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
 
We’ve found that it is a lesson in physics.
Drag vs. lift.

Here is the short of it:
Say you’re on a beat in a stiff wind. Generally, you’re heeled over fairly well.

Since our CB weighs only 100 to 200 lbs, the added length of the board really does nothing to help keep the boat on its feet, rather it generates lift in the wrong direction heeling you over further.

So why use a center board at all? To help keep the boat from slipping.
By lowering the CB you increase lateral resistance, but you also increase drag and induce lift.

We’re still playing with optimal settings under given wind speeds and boat headings, but our starting points are:

Half down on a reach.
One quarter down on a beat.
Full up on a run.

And we’ll adjust from there based on boat heading vs. course over ground as read on the GPS.


All of this is as it was explained to me by my egg-head, math wiz, jib trimmer.

Last edited by Tweegs; 09-06-2011 at 04:34 PM. Reason: typo
Tweegs is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Help! Centerboard won't go up! needsanap General Discussion (sailing related) 5 08-19-2011 07:41 AM
Centerboard niktash Mariner 1 05-25-2009 01:24 PM
Re: Connecting Sailors to Sailboats / or Sailors to Sailors NewsReader Mass Bay Sailors 0 05-25-2007 12:15 AM
Connecting Sailors to Sailboats / or Sailors to Sailors NewsReader Mass Bay Sailors 0 05-25-2007 12:15 AM
O''Day 25 centerboard Jocelyn(Nipan2) Gear & Maintenance 1 01-22-2005 09:17 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome