Seafarer 37 major repair - SailNet Community
 1Likes
  • 1 Post By TQA
 
LinkBack Thread Tools
post #1 of 6 Old 06-27-2012 Thread Starter
Junior Member
 
deverett's Avatar
 
Join Date: Jun 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Seafarer 37 major repair

Hi there, I am new to the forum, but will likely be a mega-poster by the time I have completed this repair. My SF37 dragged her mooring in a storm last year and suffered significant damage to the fin keel, skeg (gone), rudder, and prop shaft. The insurer offered a choice: total out, or take 85% payout and keep boat as is for repairs. Probably not the smartest decision of my life, but I took option B and am just now getting started with the project.

Phase 1 will be keel repair. The encapsulated keel consists of solid lead which was poured to fill the void from the leading edge to a point about 25" forward of the trailing edge. Though exposed and slightly scratched up, the lead is essentially undamaged. the 25" from aft of the lead to the trailing edge of the keel originally consisted of some sort of resin mixed with filler (almost looks like sawdust). It is this area that needs reconstruction... I will construct a sheet metal mold and re-pour this "core", if you want to call it that. I am not sure what to use for resin/filler. In my opinion epoxy would be overkill. The structural strength will ultimately come from the fiberglass laminate over this area and the lead portion which I plan on using epoxy for. I am leaning toward a more inexpensive polyester resin with who knows what for a filler. The better commercial fillers again seems like overkill for this... my rough calculations say that this void will take 4-5 gallons of fill. I have a bunch of the old filler in chunks as well as a bunch of the old laminate that I have ground off. What about just chopping all this material up as filler? Any other ideas? I'm not looking to cheap-out on a very important repair, but how much is too much?

I will attach a few photos to better show the damage, the area to be repaired now that I have cleaned it up a bit, and a couple of close-ups of the old filler.

Thanks for your thoughts!

Dave
Attached Thumbnails
IMAG0056.jpg   2012-06-23_15-53-25_711.jpg   2012-06-27_10-32-13_221.jpg   2012-06-23_15-51-22_723.jpg   2012-06-23_15-51-42_205.jpg  

deverett is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 6 Old 06-27-2012
Member
 
Join Date: Jul 2000
Location: St. Simon's Island, GA
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Seafarer 37 major repair

Good luck with the repair. I am a fellow Seafarer owner and certainly appreciate your effort at restoring this classic yacht. Your repair work is way over my head and I hope to never face a project of this magnitude.

It appears that you need the best possible advice on fiberglass repair more so than specific Seafarer input. I'll follow this thread with great interest. I also suggest that you post this on the Seafarer Yacht Group on Facebook of which I am the administrator.

Good luck and I look forward to following your repair.

James
jamesnewsome is offline  
Quote Quick Reply Share with Facebook
post #3 of 6 Old 06-27-2012
TQA
Bombay Explorer 44
 
TQA's Avatar
 
Join Date: Apr 2009
Posts: 2,867
Thanks: 0
Thanked 73 Times in 69 Posts
Rep Power: 7
 
Re: Seafarer 37 major repair

Be VERY aware of the fire risk involved in mixing large quantities of EITHER epoxy or ployester resin.

Also that polyester resin does not 'stick' very well to fully cured polyester or vinylester resin.

That is why epoxy is preferred for repair work. West System have some good ' how to' guides on their web site.
jamesnewsome likes this.
TQA is offline  
Quote Quick Reply Share with Facebook
post #4 of 6 Old 06-27-2012 Thread Starter
Junior Member
 
deverett's Avatar
 
Join Date: Jun 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Seafarer 37 major repair

Yes, the heat issue has been at the top of my concerns with this repair. The only contact will be with a sheet metal form and the lead itself, but I'm still concerned that with that thickness (about 5" tapering back to less than 1/2") there will be dangerous heat.

The other option may be to use a high density two part urethane foam. I don't think this would be recommended for below waterline use, but the only way it would ever see water would be another catastrophe...

Thanks for your ideas...
deverett is offline  
Quote Quick Reply Share with Facebook
post #5 of 6 Old 06-28-2012
Senior Member
 
JimsCAL's Avatar
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,680
Thanks: 2
Thanked 60 Times in 55 Posts
Rep Power: 9
 
Re: Seafarer 37 major repair

Since the lead is intact, this is just "fairing". Don't think its really critical what you use. How about cement? They used to make keels of that back in the old days.
JimsCAL is offline  
Quote Quick Reply Share with Facebook
post #6 of 6 Old 06-28-2012 Thread Starter
Junior Member
 
deverett's Avatar
 
Join Date: Jun 2012
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Seafarer 37 major repair

Cement is not a bad idea at all... If I thought I could build a form symmetrical enough that I was confident I would not have to fair it down at all before laminating with epoxy, I might go that route... Of course that is a big IF.

I have done some more research on 2 part urethane foam. US Composites sells a 16 lb density that will cure as hard a rock, but could presumable still be worked a little after the form is removed. The price is right as well... starting to lean toward this route.
deverett is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

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
Major hull repair.....Fibreglass work...... SVDistantStar Gear & Maintenance 6 09-07-2008 01:07 PM
Major Loss! kccollbran General Discussion (sailing related) 23 04-28-2008 11:16 PM
Major Fiberglass Repair hoganc Gear & Maintenance 2 11-19-2007 10:33 AM
Major Hoot!!! USCGRET1990 General Discussion (sailing related) 20 06-16-2007 12:13 AM
Major Damage! jr438234606 Gear & Maintenance 32 04-25-2007 04:32 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