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Old 07-30-2018, 03:02 PM   #61
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To address the area where the tanks sits on the supports I plan to glue plastic to the tanks with 5200. The aluminium will not be in contact with any surface.
I have set tanks on Dridek tiles, which works well. Only raises them about 3/8", and allows enough circulation to dry out, even if you hose the area down occasionally.

Gluing plastic to 5200 would work, if you can get the 5200 to stick long term to the plastic. I'd suggest flame treating the plastic before gluing.
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Old 07-30-2018, 03:47 PM   #62
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Hello Fryedaze,,Jack & Judy aboard "Regalita" Just wanting to say Hi,and will watch your progress on tank replacement.Take care Jack
Hi Jack, tomorrow we see if a full size tank mock up will fit. It it does not, we will go with two tanks. Good to hear from you. I will continue to entertain with updates.
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Old 07-30-2018, 03:53 PM   #63
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Hi Jack, tomorrow we see if a full size tank mock up will fit. It it does not, we will go with two tanks. Good to hear from you. I will continue to entertain with updates.
With a good sawsall anything will fit...
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Old 07-30-2018, 04:13 PM   #64
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I see these type problems and often wonder why the "blivets" (rubber tanks) used by the army and others couldn't be put into a frame to prevent rolling around and use that as a tank replacement. Rather than removing engines and using a Sawzall on anything but the offending tank.
You can but better still are the fuel cells that ATL makes.
http://atlinc.com/marine.html
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Old 07-30-2018, 06:32 PM   #65
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Poly Tanks

I recently had a 1200 litre tank fabricated out of 10 mm poly sheeting that was welded in the shape I wanted and it is fantastic, they used black poly and cut a slotted window in the end and welded white opaque poly in there so that it created a sight gauge, BSP fittings where ever I wanted them so I could screw plumbing into it, no corrosion and know cracking
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Old 07-31-2018, 08:20 AM   #66
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To address the area where the tanks sits on the supports I plan to glue plastic to the tanks with 5200. The aluminium will not be in contact with any surface.
Can you tell me what kind of plastic you plan to use? I'm also in the process of installing new aluminum tanks.
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Old 07-31-2018, 02:10 PM   #67
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Can you tell me what kind of plastic you plan to use? I'm also in the process of installing new aluminum tanks.
I haven't sourced it yet. Fiber reinforced plastic.
Haysite or any of the fiber reinforced plastic sheet. Recommended by David Pascoe.
http://www.yachtsurvey.com/fueltank.htm
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Old 07-31-2018, 06:17 PM   #68
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when (not if) I replace my steel tanks it will be with "plastic", complete with welded~in baffles. Given new fabrication techniques and materials and widespread adoption by commercial vessels in Australia I have no hesitation with this approach.
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Old 07-31-2018, 10:00 PM   #69
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I haven't sourced it yet. Fiber reinforced plastic.
Haysite or any of the fiber reinforced plastic sheet. Recommended by David Pascoe.
How to Install an Aluminum Fuel Tank : Boats, Yachts - Maintenance Repair and Troubleshooting
Thanks for the info!
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Old 08-01-2018, 07:31 AM   #70
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These guys do exactly what you're talking about.


Triple 'M' Plastics » Custom Fabrication


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Old 08-01-2018, 10:15 AM   #71
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These guys do exactly what you're talking about.


Triple 'M' Plastics » Custom Fabrication


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That may be the answer to tanks corroding. I am toying with the idea of replacing my tanks before they begin to leak. I like the idea of plastic tanks.
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Old 08-01-2018, 05:56 PM   #72
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Mockup

Based on some rough estimates I thought I might have a 50% chance of only installing one tank. The new tanks are 2" shorter in height than the old one due to interferences. I built a mockup and it almost made it. It needed to be 1/2" shorter to get around the corner. I cant shrink it anymore due to support locations. It was worth a shot. I now have measured drawings and they have been sent off to fabricators for firm estimates. Now its time to paint out that half of the ER.
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Old 08-01-2018, 07:00 PM   #73
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When painting in the engine room I use aluminum foil to mask things. It is really easy to crimp it around hoses and wiring. It is also very easy to remove when you are done. Still have to tape somethings but the foil works in most places.
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Old 08-01-2018, 07:14 PM   #74
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Old 08-01-2018, 07:17 PM   #75
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When painting in the engine room I use aluminum foil to mask things. It is really easy to crimp it around hoses and wiring. It is also very easy to remove when you are done. Still have to tape somethings but the foil works in most places.
Thanks for the good idea.
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Old 08-02-2018, 09:31 AM   #76
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Based on some rough estimates I thought I might have a 50% chance of only installing one tank. The new tanks are 2" shorter in height than the old one due to interferences. I built a mockup and it almost made it. It needed to be 1/2" shorter to get around the corner. I cant shrink it anymore due to support locations. It was worth a shot. I now have measured drawings and they have been sent off to fabricators for firm estimates. Now its time to paint out that half of the ER.
I'd be willing to come over, drink your beer, and supervise.

Ted
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Old 08-02-2018, 06:21 PM   #77
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I'd be willing to come over, drink your beer, and supervise.

Ted
No way Ted! Your standards are too high. I couldn't take the pressure.
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Old 08-04-2018, 03:17 PM   #78
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Paint

Nothing very interesting to share. Finished the tile repair on the aft wall and the prep and painting out of the area. I painted the tiles with Kilz paint. I used it six years ago on accessible areas and it has held up well. I used Rustoleum Topside gloss white for the rest of the ER. I painted out some of the bilge and under the engines six years ago and it has held up to oil and fuel very well. I have requests in to three fabricators. One has returned a bid so far. I will give the other two until COB Monday and then pick one.
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Old 08-06-2018, 03:04 PM   #79
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Leaking fuel tank

Most tank leaks are small - only ounes per week. Has anyone tried cutting a hatch-way into side or end (as in photos), cleaned the tank, then injected a liquid tar-like sealer, similar to that used in the original steel tanks, to plug the pin holes? Might last for another 20 years. The cut out part of the tank could used to fashion a reusable hatch by attaching it to a larger steel plate with a gasket.
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Old 08-06-2018, 03:38 PM   #80
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Looking good, remember exactly how you are doing this so you can come and do mine...
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