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Old 02-03-2019, 02:32   #1
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Crack in front water tank BAVARIA 44 2002

On our yacht-Bavaria 44 2002 we found a crack in the front water tank.

The crack is at the top of the right side.

Questions:

1. What type of plastic is the tank made of?

2. Does anyone in the forum have an attempt to fix this problem?
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Old 02-03-2019, 05:20   #2
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Re: Crack in front water tank BAVARIA 44 2002

Cut the top of the tank and put a.flexible tank inside or replace the tank
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Old 02-03-2019, 06:57   #3
Zai
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Re: Crack in front water tank BAVARIA 44 2002

I had a rather large crack in my black water tank.
I welded it with a hot air gun and strips of plastic.
I pressure tested it after and it works perfect
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Old 02-03-2019, 20:43   #4
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Re: Crack in front water tank BAVARIA 44 2002

Thanks
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Old 03-03-2019, 15:23   #5
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Re: Crack in front water tank BAVARIA 44 2002

I would remove the tank if I was doing it, and take it to a proper repair guy with the right plastic non-oxidising anti-flaming welding equipment and get it properly fixed.


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Old 03-03-2019, 15:47   #6
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Re: Crack in front water tank BAVARIA 44 2002

It would depend on how much of the boat needs to be ripped apart to remove it. I love my fiberglass tanks. had a crack at the top of my water tank. Repaired in place without much fuss.
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Old 03-03-2019, 16:30   #7
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Re: Crack in front water tank BAVARIA 44 2002

I have used DIP IT in a lot of applications. I would never have believed it but it really does work. DIP IT and some strips of rubber then seal that with DIP IT. One inch hole at least 8 inches of coverage.
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Old 03-03-2019, 16:32   #8
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Re: Crack in front water tank BAVARIA 44 2002

I had a Bav44 2002 until recently and also found a small crack in the fwd water tank. In my case it was at the very top where there is a re-enforcing 'trough'. it was at one of the top corners of this trough and only came under a small amount of pressure when filling the tank to full and/or when the tank is full and heeling when under sail.


I could not find a glue solution I could be confident of and even welding would have been impossible without removing the tank, not impossible but undesirable, so I fabricated an angled plate from aluminium to fit over the hole/crack with a surrounding cover of about 20-25mm in each direction then used a sealant like plasticine which I could place between the plate and the tank and then screwed (threaded screws with nuts and washers) the plate down onto the tank. Luckily I could reach inside through the inspection cover to put the nuts and washers on.



I am confident it will last but it was only a pin sized hole not a split and the plate should re-enforce the area.


Maybe your situation could be resolved in a similar way.
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Old 04-03-2019, 07:28   #9
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Re: Crack in front water tank BAVARIA 44 2002

Your tank is probably made from medium density polyethylene. It should have a symbol of a triangle with the number "2" in it somewhere on the tank. It may have pe100 or pe80 on it instead. I don't know where you are but if you found a major plumbing pipe and fitting supplier they could let you know of a local plastics fabricator who could very quickly repair your tank. This is a simple repair if it's possible to get the tank to a fabricator and probably very reasonable cost wise. The alternative is to get someone out to your boat.
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Old 15-03-2019, 10:55   #10
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Re: Crack in front water tank BAVARIA 44 2002

Thanks
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