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Go Back   SailNet Community > On Board > Gear & Maintenance > Keel J bolt replacement in lead keel
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Thread: Keel J bolt replacement in lead keel Reply to Thread
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Topic Review (Newest First)
01-19-2013 09:01 AM
blutoyz
Re: Keel J bolt replacement in lead keel

Quote:
Originally Posted by funjohnson View Post
Have it up on U ship right now. I'll how low the bidding goes... so far it is $1300
Did you ever see the show about the u-ship contractors? I think is is called shipping wars...just be happy that this is a chunk of lead because I don't think even they could break lead.
01-16-2013 07:19 PM
misfits
Re: Keel J bolt replacement in lead keel

Quote:
Originally Posted by funjohnson View Post
Have it up on U ship right now. I'll how low the bidding goes... so far it is $1300
Looked at your ad, you've got 6 days left. It'll come down to a grand or a little lower.

The guy that wants to put it in the back of a 1 ton van, guess he can't read
01-16-2013 03:43 PM
funjohnson
Re: Keel J bolt replacement in lead keel

Have it up on U ship right now. I'll how low the bidding goes... so far it is $1300
01-16-2013 10:35 AM
misfits
Re: Keel J bolt replacement in lead keel

Quote:
Originally Posted by funjohnson View Post
now I just need to find out how much shipping would be. Wonder if I can get it into a uhaul truck?
Figure out the dimensions/weight on a pallet & go to uship.com. Put it up on the site & you'll have folks bidding on the shipment.

Might be cheaper than driving a uhaul...
01-16-2013 10:20 AM
deniseO30
Re: Keel J bolt replacement in lead keel

Quote:
Originally Posted by Freerider View Post
I found this from a Don Casey article that was linked at the bottom, its a little reassurance.


" Except on radical race boats, keels rarely fall off. The reason is that a huge safety factor is nearly always designed into the attachment system. Nevin’s Rule calls for one square inch of bolt section for every 1,500 pounds of ballast. Both galvanized steel and bronze have tensile strengths of around 60,000 pounds per square inch, so if a builder follows this rule, the bolts attaching a 4,500 pound keel are capable of supporting 180,000 pounds—a margin of safety of 40 to 1. Of course, the static load increases with heel, and we can only guess at the dynamic loads, but in a recreational boat neither is likely to test or even approach such bolt strength."


http://www.sailnet.com/forums/gear-m...-concerns.html
Sounds good.. but when they go, it's the shoe that lets loose.. Like mid 80s Catalina 30s used plywood in there...

20-40 year old FG that's had water in if most of those years.. is not really all that strong either.
01-16-2013 08:03 AM
Freerider
Re: Keel J bolt replacement in lead keel

I found this from a Don Casey article that was linked at the bottom, its a little reassurance.


" Except on radical race boats, keels rarely fall off. The reason is that a huge safety factor is nearly always designed into the attachment system. Nevin’s Rule calls for one square inch of bolt section for every 1,500 pounds of ballast. Both galvanized steel and bronze have tensile strengths of around 60,000 pounds per square inch, so if a builder follows this rule, the bolts attaching a 4,500 pound keel are capable of supporting 180,000 pounds—a margin of safety of 40 to 1. Of course, the static load increases with heel, and we can only guess at the dynamic loads, but in a recreational boat neither is likely to test or even approach such bolt strength."


http://www.sailnet.com/forums/gear-m...-concerns.html
01-15-2013 10:07 PM
funjohnson
Re: Keel J bolt replacement in lead keel

Quote:
Originally Posted by eherlihy View Post
Broomfield charged $450 per bolt in 2010. This is detailed in the post that I linked to above.
I was hoping your post before was a high estimate... now I just need to find out how much shipping would be. Wonder if I can get it into a uhaul truck?
01-15-2013 10:00 PM
eherlihy
Re: Keel J bolt replacement in lead keel

Quote:
Originally Posted by funjohnson View Post
Do you remember the estimated cost for either Mars or Broomfield? Neither of them have gotten back to me yet.

Thanks,

Matt
Broomfield charged $450 per bolt in 2010. This is detailed in the post that I linked to above.
01-15-2013 09:58 PM
eherlihy
Re: Keel J bolt replacement in lead keel

I would suggest that you have done the hard part; dropping the keel. If I were you, I would now send it off and have any of the questionable bolts replaced.

If, however, you wanted to cheap out, you could simply drop the boat back on the keel, and put another nut on top of the existing nut (the current one on the really bad bolt would act as a spacer) and you'd be good to go. To be clear; I am not advocating this, but it is a solution for your consideration.
01-15-2013 09:54 PM
funjohnson
Re: Keel J bolt replacement in lead keel

Do you remember the estimated cost for either Mars or Broomfield? Neither of them have gotten back to me yet.

Thanks,

Matt
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