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  • October 9, 2013 at 2:48 am #103331

    Glenn Shaw
    Member

    Not sure I’ve posted this in the right spot, but anyway here goes.

    I’m working on a project plumbing a pair of rotopax as auxiliary fuel tanks.

    But need to know average wall thickness of the Rotopaks.

    Can anyone shed some light on this, maybe you’ve seen inside a rotopax that split, doubtful I know but worth a try

    October 9, 2013 at 7:56 am #250556

    Mike Wyeth
    Member

    You might be in luck mudrat :whistle: but it might not help :blink:
    It all depends where on the tank you are looking at , they can vary from 10 to 25 mm at some points due to the rotamould process, generally it’s the top that ends up being thinner and the bottom is thicker because that’s where all the pressure is.
    Hope that helps ;)

    October 9, 2013 at 8:09 am #250557

    Richard W
    Member

    Bugger the thickness, what’s Plan A in this project.

    October 9, 2013 at 8:13 am #250559

    Glenn Shaw
    Member
    mike wrote:
    You might be in luck mudrat :whistle: but it might not help :blink:
    It all depends where on the tank you are looking at , they can vary from 10 to 25 mm at some points due to the rotamould process, generally it’s the top that ends up being thinner and the bottom is thicker because that’s where all the pressure is.
    Hope that helps ;)

    from what I’ve been told (haven’t purchased rotopax yet), they are around 2.5/3.00 around the neck.

    surely there not that 10. to 25. mm around the bottom, would make fitting the insert a breeze, as I need a minimum of 3.mm for it to work.

    October 9, 2013 at 8:14 am #250560

    Glenn Shaw
    Member
    Dickie wrote:
    Bugger the thickness, what’s Plan A in this project.

    plan is to plumb a rotopax in the same way as a Nomad Tank.

    will post a detailed response when I get it all sorted.

    October 9, 2013 at 8:28 am #250563

    pete
    Member

    Why plumb it up ? cant you just stop and empty them into your tank ? that way you can lose the weight off the rear end sooner rather than have it splash around on the back.

    I have used the rotopax but didn’t take a good look at thickness, my answer to your question would only be a guess sorry mate.

    Can you use washers, spacers or O rings to help get you the right thickness ?

    PTW

    October 9, 2013 at 8:54 am #250564

    Glenn Shaw
    Member
    pete the wulf wrote:
    Why plumb it up ? cant you just stop and empty them into your tank ? that way you can lose the weight off the rear end sooner rather than have it splash around on the back.

    I have used the rotopax but didn’t take a good look at thickness, my answer to your question would only be a guess sorry mate.

    Can you use washers, spacers or O rings to help get you the right thickness ?

    PTW

    removing the Rotopax with Steel Pony’s fitted would be a PITA and a time waster. plus I need to drain the Tanks on the 990 to below half, for the rotopax to gravity feed to front crossover fuel line.

    October 9, 2013 at 10:02 am #250561

    Mike Wyeth
    Member
    Mudrat wrote:
    mike wrote:
    You might be in luck mudrat :whistle: but it might not help :blink:
    It all depends where on the tank you are looking at , they can vary from 10 to 25 mm at some points due to the rotamould process, generally it’s the top that ends up being thinner and the bottom is thicker because that’s where all the pressure is.
    Hope that helps ;)

    from what I’ve been told (haven’t purchased rotopax yet), they are around 2.5/3.00 around the neck.
    :laugh:
    surely there not that 10. to 25. mm around the bottom, would make fitting the insert a breeze, as I need a minimum of 3.mm for it to work.

    My apologies Mudrat, I thought you were talking about poly water tanks :laugh: :P :laugh:
    Better leave the beer alone :whistle:

    October 9, 2013 at 8:56 pm #250558

    David Mason
    Member

    Mudrat

    I have both the 1 gallon and 1/2 gallon rotopax.

    The big ones are only thin plastic. 2 or 3mm at a guess.

    The smaller ones do not have an airvent in them and are much thicker, 3 to 5mm at a guess.

    Hope that helps.

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