Rusty Keel Bolts

[gdshea]

I have badly rusted keel bolts and nuts on my Coronado 27 shoal draft (same as Columbia 26). Anybody have any experience repairing these?
Must I drop the keel and drill and embed new bolts, or is there a simpler way?
Worried sailor in Virginia.
Gdshea2wm.edu

[Dutch Peter]

Are the bolts badly corroded? did you measure the diametre? or are the nuts and the part of the bolt above it what makes you worry.
When you have determined the above, this is what you can do:
1- bolts are badly corroded, you'll have to replace them, as mentioned byyourself.
2- bolts are a bit corroded (smaller diametre), do a calculation on what the diametre should be as a minimum.
3- is it just the nuts, replace them, don't damage the thread.

Good luck.


Peter

Originally Posted by gdshea

I have badly rusted keel bolts and nuts on my Coronado 27 shoal draft (same as Columbia 26). Anybody have any experience repairing these?

Must I drop the keel and drill and embed new bolts, or is there a simpler way?
Worried sailor in Virginia.
Thank you Peter for your advice.
The corrosion is above the diametre, on both nuts and bolts and beyond the stage where rethreading can be accomplished.
I assume the ekkl must be dropped and new bolts seated in the keel. Have never done anything like this, sounds like a major endeavor best done by a yard.
Gdshea2wm.edu

I gather the old bolts must be drilled out and new bolts seated in the keel, which I believe is steel encased in fibreglass.

[Dutch Peter]

Glenn,

If the keel is of steel, you might be lucky, the bolts might be threaded in the keel and can be replaced by yourselfs.
If the keel is lead, the bolts are probably encastered and a yard should take care of it (although it can be done by amateurs!).
I wish you good luck!


Regards, Peter

Originally Posted by Dutch Peter

Are the bolts badly corroded? did you measure the diametre? or are the nuts and the part of the bolt above it what makes you worry.
When you have determined the above, this is what you can do:
1- bolts are badly corroded, you'll have to replace them, as mentioned byyourself.
2- bolts are a bit corroded (smaller diametre), do a calculation on what the diametre should be as a minimum.
3- is it just the nuts, replace them, don't damage the thread.

Good luck.


Peter

Thanks Peter, fort the advice.
I fear that alternative 1 is the most descriptive, the bolts and nuts are badly corroded. I wondered about the possibility of drilling new holes into the keel while attached, thru the hull bottom but gather that is not such a clever idea.
Glenn

[Dutch Peter]

Glenn,

No, I don't thinck that's a good idea. But taking of the keel of your boat is not such a big deal. It's better to take it off, as fitting it back wil give you a proper sealing between hull and keel.
Just think things over, how to remove it and how to fit it. What happens in the middle of that, depends on what you find.
BTW is it a polyester or wooden boat we're talking about?
Take a look at "Frame, stem & keel repairs" - P.H. Spectre, from Woodenboat. This might be helpfull.

Regards,



Peter

Peter,
I can find lots of references to Spectre, P.H. in the Woodenboat index page, but nothing that reads "Frame, stem and keel repairs." Do you have anymore information on this reference.
My boat is fibreglass but I am sure I would benefit from the article.
Glenn

Originally Posted by Dutch Peter

Glenn,

No, I don't thinck that's a good idea. But taking of the keel of your boat is not such a big deal. It's better to take it off, as fitting it back wil give you a proper sealing between hull and keel.
Just think things over, how to remove it and how to fit it. What happens in the middle of that, depends on what you find.
BTW is it a polyester or wooden boat we're talking about?
Take a look at "Frame, stem & keel repairs" - P.H. Spectre, from Woodenboat. This might be helpfull.

Regards,



Peter

[Dutch Peter]

Here's the direct link:

http://www.woodenboatstore.com/store...325-105&item=1

If it doesn't work, look on the woodenboat site under, book published by wooden boat, repair section.

regards,

Peter

Thank you again Peter. I found the site immediately and ordered the book.

Originally Posted by Dutch Peter

Here's the direct link:

http://www.woodenboatstore.com/store...325-105&item=1

If it doesn't work, look on the woodenboat site under, book published by wooden boat, repair section.

regards,

Peter