Centerboard raising options? - SailNet Community
 11Likes
Reply
 
LinkBack Thread Tools
post #1 of 17 Old 11-10-2014 Thread Starter
Senior Member
 
krisscross's Avatar
 
Join Date: Feb 2013
Location: NC
Posts: 2,066
Thanks: 25
Thanked 122 Times in 121 Posts
Rep Power: 3
 
Centerboard raising options?

The boat is Buccaneer 18, the board is a thick and heavy (at least 75 lbs) fiberglass slab. The old system was a 2:1 block and pulley system placed in a very tight and contorted space above the centerboard box and below cockpit sole. the old system was using rope attached to the upper aft corner of the board, run through 2 blocks and out to a cam cleat in the cockpit through a hole just below the companionway opening. Old system is shot, the second block (and it's attachment) is gone, the cam cleat is shot too.

The question is: replace the old block and pulley system, or go with something else, like a small winch?
Use a dyneema rope for either options? I'm worried that a steel cable might cut through fiberglass where the centerboard box ends and cockpit sole starts.

Be kind, for everyone you meet is fighting a hard battle.
Plato
krisscross is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 17 Old 11-12-2014 Thread Starter
Senior Member
 
krisscross's Avatar
 
Join Date: Feb 2013
Location: NC
Posts: 2,066
Thanks: 25
Thanked 122 Times in 121 Posts
Rep Power: 3
 
Re: Centerboard raising options?

I decided to go with a small cockpit mounted winch. Primary reason: more secure control of the centerboard. I'm planning to use polypropylene rope with a 350 lbs breaking strength. What would be the best way of attaching this rope to the centerboard? The board has a block with a becket. I think in the original configuration, the centerboard control rope ran from the becket to the forward block, then back to the block on the centerboard (thus getting the 2:1 purchase) and out to the cockpit and the cam cleat which held it in place.
I want to tie the rope to the becket and run it out to the cockpit and the winch, with just one block to make the rope run smoother and avoid chafe.
What would be a good knot for this polypropylene rope?

Be kind, for everyone you meet is fighting a hard battle.
Plato
krisscross is offline  
Quote Quick Reply Share with Facebook
post #3 of 17 Old 11-13-2014
Master Mariner
 
capta's Avatar
 
Join Date: Jun 2011
Location: somewhere in the Windward or Leeward Islands
Posts: 2,187
Thanks: 34
Thanked 109 Times in 104 Posts
Rep Power: 5
 
Re: Centerboard raising options?

I don't think the polypro has the durability you are looking for and there are no knots I know of that are secure in it. I'd go with some of the super lines available today and attach it where the block w/becket attaches to the board (eye splice w/ thimble) and remove the block entirely, if you are using a winch. Since one block is shot, this one could also be close and you don't want to be messing with all this again anytime soon.
Jeff_H and krisscross like this.

"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.

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

facebook.com/svskippingstone
Our Videos;

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


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


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
capta is offline  
Quote Quick Reply Share with Facebook
post #4 of 17 Old 11-13-2014
Senior Member
 
Join Date: Feb 2012
Location: New Orleans Louisiana
Posts: 2,350
Thanks: 7
Thanked 81 Times in 77 Posts
Rep Power: 4
 
Re: Centerboard raising options?

If you are switching to a winch you don't need the mechanical advantage of the 2:1. I would just splice a 1/8" piece of amsteel to the board.
krisscross likes this.

Greg Rubin
Attorney
Stumble is offline  
Quote Quick Reply Share with Facebook
post #5 of 17 Old 11-13-2014 Thread Starter
Senior Member
 
krisscross's Avatar
 
Join Date: Feb 2013
Location: NC
Posts: 2,066
Thanks: 25
Thanked 122 Times in 121 Posts
Rep Power: 3
 
Re: Centerboard raising options?

Yes, I'm not going to use the block system with the winch. Honestly, I was just thinking of tying that 3/8 polypropylene rope to the becket with a buntline hitch.

Be kind, for everyone you meet is fighting a hard battle.
Plato
krisscross is offline  
Quote Quick Reply Share with Facebook
post #6 of 17 Old 11-13-2014 Thread Starter
Senior Member
 
krisscross's Avatar
 
Join Date: Feb 2013
Location: NC
Posts: 2,066
Thanks: 25
Thanked 122 Times in 121 Posts
Rep Power: 3
 
Re: Centerboard raising options?

Capta, so you suggest getting rid of this block on the centerboard? It looks really solid to me. But if I get rid of it, how to attach the rope to the board? The block is through bolted to the centerboard with 2 bolts.

Be kind, for everyone you meet is fighting a hard battle.
Plato
krisscross is offline  
Quote Quick Reply Share with Facebook
post #7 of 17 Old 11-13-2014
Once known as Hartley18
 
Classic30's Avatar
 
Join Date: Aug 2007
Location: Melbourne, Australia
Posts: 4,795
Thanks: 45
Thanked 65 Times in 65 Posts
Rep Power: 9
   
Dock
Re: Centerboard raising options?

Quote:
Originally Posted by krisscross View Post
Capta, so you suggest getting rid of this block on the centerboard? It looks really solid to me. But if I get rid of it, how to attach the rope to the board? The block is through bolted to the centerboard with 2 bolts.
I'd suggest (1) mounting the cheapest stainless-steel trailer winch you can buy at the cockpit end of the centreboard case and (2) tying your rope around the centreboard block itself. That way you keep the cockpit clear (ducking into the cabin to raise/lower the CB is usually no big deal)

You might need a turning block somewhere forward depending on your setup. Pics would help.
krisscross likes this.

-
"Honestly, I don't know why seamen persist in getting wrecked in some of the outlandish places they do, when they can do it in a nice place like Fiji." -- John Caldwell, "Desperate Voyage"
Classic30 is offline  
Quote Quick Reply Share with Facebook
post #8 of 17 Old 11-14-2014 Thread Starter
Senior Member
 
krisscross's Avatar
 
Join Date: Feb 2013
Location: NC
Posts: 2,066
Thanks: 25
Thanked 122 Times in 121 Posts
Rep Power: 3
 
Re: Centerboard raising options?

Quote:
Originally Posted by Classic30 View Post
I'd suggest (1) mounting the cheapest stainless-steel trailer winch you can buy at the cockpit end of the centreboard case and (2) tying your rope around the centreboard block itself. That way you keep the cockpit clear (ducking into the cabin to raise/lower the CB is usually no big deal)

You might need a turning block somewhere forward depending on your setup. Pics would help.
I thought about mounting the winch inside the cabin right at the companionway opening but there is not enough space there to turn the handle. If I mount it inside the cabin, the winch will get in the way and make sleeping inside just about impossible. I would rather have it in the cockpit.

Stainless steel winch? Never seen those. And likely could not afford one for this project. A regular marine winch will have to do for me.

I have two options when tying rope to the existing centerboard block: tie the rope to the becket, or tie the rope around the sheave. The sheave is plastic, the becket is stainless steel.

Would the buntline hitch be a good knot to use on a braided 3/8 inch polypropylene rope? I thought of wrapping the lose end of the knot to the line with a sail thread or rigging tape for extra security.

Be kind, for everyone you meet is fighting a hard battle.
Plato
krisscross is offline  
Quote Quick Reply Share with Facebook
post #9 of 17 Old 11-15-2014
Senior Member
 
Join Date: Oct 2011
Location: Nanaimo B.C.
Posts: 2,508
Thanks: 3
Thanked 55 Times in 55 Posts
Rep Power: 4
 
Re: Centerboard raising options?

Amsteel. Eye splice poke thru the becket and bitter end thru the eye splice .pull all thru and lead to winch. (winch could be plywood disks 3" and 3 .5 with ratchet plate and dog. Twice around. Cleat line behind it.Pretty standard fair and better than high tech.
krisscross likes this.

Last edited by Capt Len; 11-15-2014 at 01:34 AM.
Capt Len is offline  
Quote Quick Reply Share with Facebook
post #10 of 17 Old 11-15-2014 Thread Starter
Senior Member
 
krisscross's Avatar
 
Join Date: Feb 2013
Location: NC
Posts: 2,066
Thanks: 25
Thanked 122 Times in 121 Posts
Rep Power: 3
 
Re: Centerboard raising options?

Quote:
Originally Posted by Capt Len View Post
Amsteel. Eye splice poke thru the becket and bitter end thru the eye splice .pull all thru and lead to winch.
Ah, I see it. Loop it around the becket post. What size amsteel? 1/4 inch? Amsteel I have to buy, the 3/8" polypropylene I already have. I thought this poly would chafe less due to large surface area but was not sure how well it will hold the knot on the becket.

Be kind, for everyone you meet is fighting a hard battle.
Plato
krisscross 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
centerboard day sailer: raising/lowering sails in stronger winds CaribDream General Discussion (sailing related) 18 05-03-2013 02:55 PM
Centerboard position - keel/centerboard Tartan 37 upwind cspear Racing 14 07-02-2012 12:31 PM
raising swinging centerboard Paddler76 Gear & Maintenance 1 05-07-2011 06:58 AM
Raising the sail davidpm General Discussion (sailing related) 10 08-01-2008 12:43 PM
Centerboard raising mechanism... deryk Morgan 4 06-08-2008 07:50 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