Heat & Fiberglass... - 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 02-27-2011
Seafire327's Avatar
Member
 
Join Date: Aug 2008
Location: Boston, Massachusetts
Posts: 43
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Seafire327 is on a distinguished road
Question Heat & Fiberglass...

Now, I know that they don't combine well at all, but there have been a few posts lately about keel bolts, and it got me thinking about mine. I've been trying to figure out a way to caress the steel bolts out of my cast iron keel for some time. After reading some tactics on automotive blogs, and working on my own, I know that heating a bolt that is stuck, is a good way to get it moving. I was wondering weather I could get a piece of plate steel with a 1/2" hole cut out and use it shield the bilge while I carefully (CAREFULLY!!!) heat the bolt with a torch. A few heatings and coolings should free the bolt and not have me worry about snapping the bolt in the keel... I guess I'm worried about heat transfer to the glass, etc.

Thoughts? I appreciate any input
__________________
'70 Columbia C26 Mk II - "Klydo"
Boston, Ma
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 02-27-2011
mitiempo's Avatar
Senior Member
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,171
Thanks: 0
Thanked 73 Times in 64 Posts
Rep Power: 8
mitiempo will become famous soon enough mitiempo will become famous soon enough
If you have a Columbia 26 MKII as indicated in your post, you have a lead keel. The bolts in a lead keel will not turn as the section of the bolt in the keel is "J" shaped. The keel can be removed by undoing the nuts on the bolts in the keel stub portion of the bilge.
Columbia 26 Mk II and K Specifications
__________________
Brian
Living aboard in Victoria Harbour
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 02-27-2011
Seafire327's Avatar
Member
 
Join Date: Aug 2008
Location: Boston, Massachusetts
Posts: 43
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Seafire327 is on a distinguished road
Yea, I'm not sure why the spec sheet on that site says lead, but it is definitely cast iron. I've ground it down and faired it a few times. Here is the tech drawing that I meant to attach to the initial post to better illustrate what I mean.
Attached Thumbnails
Heat & Fiberglass...-2-2.jpg  
__________________
'70 Columbia C26 Mk II - "Klydo"
Boston, Ma
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 02-27-2011
mitiempo's Avatar
Senior Member
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,171
Thanks: 0
Thanked 73 Times in 64 Posts
Rep Power: 8
mitiempo will become famous soon enough mitiempo will become famous soon enough
I guess the info on that site is incorrect. I guess if the threaded section has been moist at all it has corroded in place over the years.
You will have to heat the bolt throughout its length, and the keel will resist that as it is cool - or cold this time of the year.
Are you dropping the keel or just trying to pull a bolt for inspection?
__________________
Brian
Living aboard in Victoria Harbour
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 02-27-2011
Seafire327's Avatar
Member
 
Join Date: Aug 2008
Location: Boston, Massachusetts
Posts: 43
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Seafire327 is on a distinguished road
I'd like to inspect, and replace if necessary, one at a time. I'm fairly certain that the bolts have been replaced before, but they are showing some age and I think a check sooner than later is in order.
__________________
'70 Columbia C26 Mk II - "Klydo"
Boston, Ma
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 02-27-2011
mitiempo's Avatar
Senior Member
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,171
Thanks: 0
Thanked 73 Times in 64 Posts
Rep Power: 8
mitiempo will become famous soon enough mitiempo will become famous soon enough
Are they steel or stainless steel?
__________________
Brian
Living aboard in Victoria Harbour
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 02-27-2011
Seafire327's Avatar
Member
 
Join Date: Aug 2008
Location: Boston, Massachusetts
Posts: 43
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Seafire327 is on a distinguished road
Zinc coated steel. Last year I removed the nut off the foremost bolt, and and replaced it with new, partially to see if the bolt would withstand the re-torquing. No problems there. So I think I'm in fairly good shape, but I'd like to know for sure. Also thought of using penetrating oil over the course of a few weeks, but again, I don't know if that might have an adverse effect on the surrounding hull structure.
__________________
'70 Columbia C26 Mk II - "Klydo"
Boston, Ma
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 02-27-2011
mitiempo's Avatar
Senior Member
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,171
Thanks: 0
Thanked 73 Times in 64 Posts
Rep Power: 8
mitiempo will become famous soon enough mitiempo will become famous soon enough
I don't think penetrating oil will harm the hull, but I am not an expert. The best to use is PB Blaster - it works better than any other. But I don't know how far it will penetrate along the bolt threads if they is corroded in place.

Perhaps someone else will post an answer.
__________________
Brian
Living aboard in Victoria Harbour
Reply With Quote Quick reply to this message Share with Facebook
  #9  
Old 02-27-2011
Seafire327's Avatar
Member
 
Join Date: Aug 2008
Location: Boston, Massachusetts
Posts: 43
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Seafire327 is on a distinguished road
I know PB is the best, but it also eats styrofoam on contact...Which was my worry. Thanks for the input!
__________________
'70 Columbia C26 Mk II - "Klydo"
Boston, Ma
Reply With Quote Quick reply to this message Share with Facebook
  #10  
Old 02-27-2011
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
I would try penetrating oil instead of heat... PB Blaster works wonders.
__________________
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 Quick reply to this message 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:

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

 
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
Oil in Heat Exchanger sailak Gear & Maintenance 38 08-07-2010 08:28 PM
heat and internet KasbeKZ Living Aboard 24 10-14-2008 08:06 PM
The heat of the sun... merlin2375 Gear & Maintenance 20 06-09-2008 11:38 AM
Propane for Heat? capecodphyllis Gear & Maintenance 27 12-15-2006 01:36 PM
Using Heat Bro Gear & Maintenance 2 11-13-2002 04:26 PM


All times are GMT -4. The time now is 01:08 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.