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  1. #1
    Join Date
    Dec 2005
    Location
    Far S. Cornwall
    Posts
    13,223

    Default Split plastic fuel tank

    Friend has a split near a corner in a ten year old plastic tank. It looks to me as though the rotation moulding was faulty, as the thickness is only 3-4mm, the rest of the tank and comparative areas near other identical corners seem thicker.
    Never come across one to fail like this, has anyone else?

    I would be inclined to drill a hole in another corner and compare thickness, then maybe complain. He has replaced the tank.

  2. #2
    Join Date
    May 2007
    Posts
    37,716

    Default Re: Split plastic fuel tank

    Going by the weight of these tanks, I'd doubt they are much thicker than 4mm average.

  3. #3
    Join Date
    Jun 2013
    Posts
    3,440

    Default Re: Split plastic fuel tank

    10 years seems a bit long to expect recompense. 3-4mm might be the target thickness and the other corners could all be above specification.
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  4. #4
    Join Date
    May 2005
    Location
    up on the moors.
    Posts
    33,322

    Default Re: Split plastic fuel tank

    Relatively easy to fix with a thermostatic heat gun, plus (very important) rods of the right compatible plastic.

    I use a Leistner for agriplastic fixes, but I have seen people making a very good job with soldering iron.


    I suspect that the split being in the corner may be the result of bash, as corners are not flexible.
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  5. #5
    Join Date
    Dec 2005
    Location
    Far S. Cornwall
    Posts
    13,223

    Default Re: Split plastic fuel tank

    Ten years a bit optimistic. The tank was sat in a GRP tray made in a mould taken from the tank, the split was above the tray. I agree, 3mm may be over the minimum. I doubt it was bashed, but there was a battery replacement nearby recently. Just I nvere heard of one failing, obviously it happens.

  6. #6
    Join Date
    Nov 2013
    Location
    Perth WA
    Posts
    2,124

    Default Re: Split plastic fuel tank

    If you are going to plastic weld the tank make sure you empty all the fuel out first

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