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Subject: Re: [worldcruising] Adding Lead To A Keel
truelove39@XXX.XXX
Date: Mon Aug 12 2002 - 06:47:46 EDT
Hello Russ:
I'm not an expert, but I have a fair amount of steel boat, welding, and
lead-melting (wire-rope socket) experience. So here's my
two cents worth:
>
>
> Question: What's the best way to add lead to steel keels?
I didn't calculare the volume of your keels, but I envision the lead being in
a relatively short section of them. I'd weld dams into the keels and pour the
lead in (before the keels are installed).
>
> Should I paint the surface of the steel before adding hot lead?
I don't think I would.
>
> What about galvanic corrosion i.e. interaction between the two different
> metals i.e. between the lead and mild steel?
I don't think that's a concern.
>
> Has anyone some advice about a good (simple) way to go about melting and
> adding the lead?
Use an oxy-acetylene torch to melt the lead in a small crucible (it must be
entirely moisture-free, or you will get molten lead in your face!).
>
> Another idea proposed is to chop the lead ingots up using a chain-saw and
> just add the lead in small lumps, then add bitumen pitch or tar to seal it
> in. In fact, tar has been used in my main keel to secure lead ingots and
> does a good job. I'm not sure this is the best way....
>
>
I don't think you need to seal it in. You could weld some keeper plates over
the top of the lead to keep it from shifting upwards.
Good sailing,
John
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