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Old 22-10-2011, 20:07   #1
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Aluminum Corrosion Galvanic Action on Morse Control ?

hello sailors

i have a used morse control set. it has an ally housing and stainless inner parts. the under deck half is as new as it has never got wet. the upper half is fugly, with deep pitting and white powder corrosion. i assume this is galvanic action. it the lever control is ss that could be the catalyst, as opposed to the working parts. how to cure?

- run an earth wire to the boats earth?
- grind and epoxy paint?

- ano?

many many thanks
Capn John
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Old 23-10-2011, 01:06   #2
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Re: aluminium corrosion galvanic action on morse control ?

Some of the older Morse units had the head cast out of pot metal. Nothing as sophicated as galvanic corrosion on those, just plain old oxidation of cheap alloy and flaking chrome plate.
Grind the corrosion off and paint it.
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Old 23-10-2011, 01:52   #3
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Re: aluminium corrosion galvanic action on morse control ?

I had the same problem with mine.

I looked at replacing them but couldn't find the classic look I like, and given how cheap some stuff is here, I decided to take them to a local foundry, had them filled then copied in bronze and plated.

I had some old bronze fittings/hardware I gave them for the material ...the round ends I had turned from SS.

You may be surprised how inexpensive this type of work can be depending on your location.
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Old 23-10-2011, 02:13   #4
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Re: aluminium corrosion galvanic action on morse control ?

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I had the same problem with mine.

I looked at replacing them but couldn't find the classic look I like, and given how cheap some stuff is here, I decided to take them to a local foundry, had them filled then copied in bronze and plated.

I had some old bronze fittings/hardware I gave them for the material ...the round ends I had turned from SS.

You may be surprised how inexpensive this type of work can be depending on your location.
NICE!! As usual James, you set the bar pretty high

BTW, hows the barge thing coming?
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Old 23-10-2011, 04:17   #5
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Re: aluminium corrosion galvanic action on morse control ?

Thanks Blue...You know I always enjoy a good challenge.
Do you mean the dhow....or the barge/ floating island thread thing....I'd sure love to build her http://www.cruisersforum.com/forums/...ls-397-38.html
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Old 23-10-2011, 05:33   #6
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Re: aluminium corrosion galvanic action on morse control ?

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Thanks Blue...You know I always enjoy a good challenge.
Do you mean the dhow....or the barge/ floating island thread thing....I'd sure love to build her http://www.cruisersforum.com/forums/...ls-397-38.html
No hi-jack intended.
Curious about the dhow-related construction project.
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Old 23-10-2011, 05:54   #7
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Re: aluminium corrosion galvanic action on morse control ?

The dhow did a good job moving most of the material out to the island, but the project is at a standstill due to political unrest...the boats safe for now in the port of Mocha.
We still have a big tower assembly and some tech equipment to transport, but had been storing it (and others) in the yard of our cotton gin in Zanzibar when alQaida took over the place...hope all the bits and pieces are still there when the finally get run out....whenever that will be is anyone's guess...

In the mean time I'm in Lebanon where my kids can continue their schooling...good news is this is where my other boats at!
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Old 23-10-2011, 10:33   #8
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Re: aluminium corrosion galvanic action on morse control ?

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NICE!! As usual James, you set the bar pretty high

BTW, hows the barge thing coming?
Sometimes I think his labors are beyond reach, and artistic too......i2f
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Old 23-10-2011, 11:00   #9
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Re: aluminium corrosion galvanic action on morse control ?

Thanks imagine2frolic...Its all about idle hands...
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Old 23-10-2011, 18:16   #10
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Re: aluminium corrosion galvanic action on morse control ?

great comments peeps, I have ground and epoxied - and in th process found a small non oem bronze screw......!!!!!!!!! which i removed. its 'all white' now!

I have noted also the comments on foundry work/costs. i shall save my rigging plating for later...

ps James I was also impressed with your island - definitely a 'goer'. some modular elements could make it more transportable....

thnx again
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