Pearson Yachts Forum
Pearson Boats - Common Systems => Plumbing and Galley Systems => Topic started by: Dolce_Vita on May 28, 2013, 06:52:55 AM
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Trying to find out if Aluminum tanks were a systematic changeover from Monel, or if Pearson just offered them as a special option.
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My understanding when I bought my P323 that monel was an upgrade option.
There were too many options to mention
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Hull #148 (1978) came with an aluminum tank.
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Probably a dumb question, but how can you tell?
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Probably a dumb question, but how can you tell?
Aluminum is a lighter colored metal then Monel, and its corrosion is crumbly white. It is totally non-magnetic.
Monel, being composed primarily of Nickel, Copper, and iron, is a darker metal, and its corrosion is a smooth layer of greenish-brown, usually found around welded seams. Depending on the specific alloy, it is usually slightly magnetic.
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Hi Guys,
Here is the contact information for the company that fabricated the fuel tanks:
Daniela Fiori Jones
Florida Marine Tanks, Inc
120 Peter Gill Rd
Henderson, NC 27536
305-620-9030 x330
252-438-5062 (fax)
dfiori@fmtanks.com
Daniela was nice enough to provide me with a copy of the fabrication print PS-22. She asked me not to post the drawing on-line, so you will have to contact here directly. She may be able to shed some light.
Regards,
Bill
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Well, FWIW I am pretty sure Selene' fuel tank is not Aluminium (1980). There is no corrosion visible, so it is difficult to be sure; but it is still somewhat shiny (you know how dull Al gets), and not as thick as I would expect Al to be. So I am thinking Monel, or perhaps stainless. I am tending more to Monel as it does not have a consistent color like stainless steel; it looks slightly patchy, like a little bit like galvanised.
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Sounds like Monel.
Take a pic and post
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Well, FWIW I am pretty sure Selene' fuel tank is not Aluminium (1980). There is no corrosion visible, so it is difficult to be sure; but it is still somewhat shiny (you know how dull Al gets), and not as thick as I would expect Al to be. So I am thinking Monel, or perhaps stainless. I am tending more to Monel as it does not have a consistent color like stainless steel; it looks slightly patchy, like a little bit like galvanised.
If it looks like this, it's Monel.
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Ha! They all look silver to me - well, I finally got a bad pic of mine..may help aspiring metallurgists, or may not.
Ed, yours looks like it is rounded? Mine is squared on all sides.
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One vote for Aluminium
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Ed, yours looks like it is rounded? Mine is squared on all sides.
Yes, the long edges (fore & aft) are radiused with a fairly large radius. The tank is an OEM Monel 30 gal tank. It (and the waterlift muffler) were built by the "Cambridge Welded Tank Co, Cambridge, MA". I havent found any surviving trace of this company.
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FWIW, I was working on the engine and managed to look at the tag on the fuels tank. Despite it's appearance - sure looks like steel - it is also aluminium (photo attached). As previously mentioned, Florida Marine Tanks.
Makes sense - Selene has almost no options (fiberglass sole, single air vent...)