Can Be a Big Job - Support Board - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 05-12-2007
Freesail99's Avatar
Senior Member
 
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
Freesail99 will become famous soon enough
Send a message via Yahoo to Freesail99
Exclamation Can Be a Big Job - Support Board

I am not sure of the proper name for it, but the board, which in my case is 2 layers of 3/4 plus 1 layer of 1/2 plywood laminated together has some rot. This board is what the rudder shaft connects to and hangs from. Now here is the problem if I replace entire board I will need to remove a wall in the aft bearth. Making everything "pretty" again will take so time. If I do this, I will replace the 2 x 10 inch laminated plywood board with an engineried laminated beam. Much stronger.
Now the rot as far as I can tell isn't a lot but it is their. I tapped and used a screwdriver into the wood looking for soft spots. I found a couple of them. I was also thinking that I could set the depth on a cirular saw and cut away the top layer of the rotted area and epoxy back in a new peice of marine ply. I could even add a peice of 1/4 Alum. Plate to the top of the beam, spreading out the load. What do you guys think ?

Thanks,
Paul
__________________
S/V Scheherazade
-----------------------
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #2  
Old 05-12-2007
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Freesail-

it would help a lot if you said what kind of boat this is on and if you posted a photo of the part.

An engineered laminated beam may be much stronger, but most aren't designed to be used in wet environments, and if it is, it may delaminate more quickly than the plywood did.
__________________
Sailingdog

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

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #3  
Old 05-12-2007
hellosailor's Avatar
Plausible Deniability
 
Join Date: Apr 2006
Posts: 10,625
Thanks: 2
Thanked 89 Times in 87 Posts
Rep Power: 10
hellosailor has a spectacular aura about hellosailor has a spectacular aura about
Paul, even a fuzzy cell phone photo would help. It sounds like you are talking about a skeg-hung rudder, meaning the from edge of the rudder is hinged onto something in front of it, another board or the stern of the boat.

Depending on the damage, it is possible to dry wood out and inject epoxy penetrant to stregnthen it, but if the wood is damp and the damage is large you'd probably be safer replacing a critical part--like a rudder mount.

"Marine" materials are best for this, either marine ply (which is particularly dense and solid with no voids) or fiberglass are typical. Aluminum plates would be a bad choice since aluminum easily has galvanic problems in the wet.
Reply With Quote Share with Facebook
  #4  
Old 05-13-2007
Freesail99's Avatar
Senior Member
 
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
Freesail99 will become famous soon enough
Send a message via Yahoo to Freesail99
I will take some pictures today, as I didn't have my camera yesterday. This is the board the rudder shaft hangs from. In my boat this board is 2 x 10 x 79. it is fiberglass ( tabbed ) into the stern on 4 sides. I will post some pictures late this afternoon, thanks.
__________________
S/V Scheherazade
-----------------------
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #5  
Old 05-20-2007
Freesail99's Avatar
Senior Member
 
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
Freesail99 will become famous soon enough
Send a message via Yahoo to Freesail99
I was back at the boat, the damaged area looks to be no more then 5 or 6 inches from the rudder shaft. The wood chips in the picture were made by me, looking for the rotten area. I also looked below and saw no problems at all. It appears the entire rotted area would be no more the 10 x 8 inches at the most.
So my question is can I cut away the small area and epoxy back in a new peice of plywood ?
__________________
S/V Scheherazade
-----------------------
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #6  
Old 05-20-2007
hellosailor's Avatar
Plausible Deniability
 
Join Date: Apr 2006
Posts: 10,625
Thanks: 2
Thanked 89 Times in 87 Posts
Rep Power: 10
hellosailor has a spectacular aura about hellosailor has a spectacular aura about
I don't know about the other guys but now I'm totally confused. What's the big nut and bolt about?
Reply With Quote Share with Facebook
  #7  
Old 05-20-2007
Freesail99's Avatar
Senior Member
 
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
Freesail99 will become famous soon enough
Send a message via Yahoo to Freesail99
That is the nut that holds the rudder shaft. About 14 inches below that would be the packing.
__________________
S/V Scheherazade
-----------------------
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #8  
Old 05-20-2007
Member
 
Join Date: May 2006
Posts: 80
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
DeepFrz is an unknown quantity at this point
I don't see any reason that you couldn't cut out the rotted area and scarf in a piece of wood to replace the area cut out. If I were doing it I would sand everything back to good wood and then coat the wood with several coats of epoxy resin, perhaps even adding several layers of fiberglass cloth to the top. Make sure there is no rot back where the shelf joins the bulkhead.
Reply With Quote Share with Facebook
  #9  
Old 05-20-2007
Freesail99's Avatar
Senior Member
 
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
Freesail99 will become famous soon enough
Send a message via Yahoo to Freesail99
Quote:
Originally Posted by DeepFrz
I don't see any reason that you couldn't cut out the rotted area and scarf in a piece of wood to replace the area cut out. If I were doing it I would sand everything back to good wood and then coat the wood with several coats of epoxy resin, perhaps even adding several layers of fiberglass cloth to the top. Make sure there is no rot back where the shelf joins the bulkhead.

That is my plan. I was even to drill some holes and fill the boards with epoxy to add strenth between the boards. Thanks
__________________
S/V Scheherazade
-----------------------
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #10  
Old 05-20-2007
hellosailor's Avatar
Plausible Deniability
 
Join Date: Apr 2006
Posts: 10,625
Thanks: 2
Thanked 89 Times in 87 Posts
Rep Power: 10
hellosailor has a spectacular aura about hellosailor has a spectacular aura about
DeepFrz, when you say "scarf in"...simply cutting a piece out of dropping a new piece in, which is simply a butt joint on all four sides, might or might not do--depending on the strains and exactly what this board is. (Which I confess I still have no real grasp of at this point.)

Just how are you suggesting he scarf it in??? (Which usually means at least a 45 degree angle on all joint surfaces, to me.)
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Proper use of the Traveler PDixon Boat Review and Purchase Forum 34 04-23-2014 04:00 PM
Eye-splicing lines... beatkiddo Seamanship & Navigation 11 09-20-2006 01:28 PM
Superfluous Sextant? akoutdoors1 Seamanship & Navigation 4 08-10-2006 10:51 AM
Alternator and Batteries NewsReader Mass Bay Sailors 2 06-27-2006 06:09 AM
Fire on Board! Don Casey Seamanship Articles 0 07-14-2003 08:00 PM


All times are GMT -4. The time now is 06:36 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.