Foam Flotation

Discussion in 'General Conversation' started by Arundel30, Jun 29, 2014.

  1. Arundel30

    Arundel30 Member

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    Hello,
    I have a 1989 Predator 22 that I purchased last December but have not used yet. While I had the engine out for sprucing up, I found water seeping into the bilge and have determined the foam is saturated. I am presently removing the foam from the compartments on the side of the engine. Does anyone know if the foam is a structural element in these boats? I am considering alternatives to the foam, but also need to know the correct density (2# or 4#, etc.) in case I decide to just replace it. I have wanted one of these boats for along time and want to make it the best I can.
    Regards,
    Dan
     
  2. Rejoice

    Rejoice Well-Known Member

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    I don't know if the foam is structural but I doubt it. How did you remove the foam?
    Rich
     
  3. Rejoice

    Rejoice Well-Known Member

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    I don't know if the foam is structural but I doubt it. How did you remove the foam?
    Rich
     
  4. blackdog

    blackdog Well-Known Member

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    I removed the foam from my 7320'cc for the same reason.I never replaced it to this day three years later no problems solid as could be.
     
  5. Arundel30

    Arundel30 Member

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    I made a tool to go in a VSR drill by cutting a disc out of sheet metal with a hole saw, made two slices with tin snips and bent up two ears. This is fastened to a long 1/4" bolt as an arbor. I made another tool from a piece of exhaust pipe by filing one end to look like a hole saw and turned it by hand. The detail cleaning was done with an assortment of modified putty knifes. Access was cut in the deck that will take a BOMAR BOM-8711-w Hatch (although I may upgrade to a better hatch).
     
  6. Arundel30

    Arundel30 Member

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    Thanks for the reply. I'd rather be able to see the problem next time rather than it be hidden by foam.
     
  7. Yankee

    Yankee Well-Known Member

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    Take a picture of your various tools. I would be interested in seeing your approach.
     
  8. chuckash

    chuckash Well-Known Member

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    I thought the foam provided structural support between the hull bottom and the deck. On my 76, I believe the deck would flex if not for the foam underneath.

    Blackdog, when you removed the foam, did you have to support the deck somehow? I would have loved to leave the foam out, but wasn't sure about the structural integrity so I purchased a large quantity of two part foam and re-installed.

    I dug mine out with a shovel, and probably got 200 lbs of soaked material out of each side.

    Charlie
     
  9. chuckash

    chuckash Well-Known Member

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    I thought the foam provided structural support between the hull bottom and the deck. On my 76, I believe the deck would flex if not for the foam underneath.

    Blackdog, when you removed the foam, did you have to support the deck somehow? I would have loved to leave the foam out, but wasn't sure about the structural integrity so I purchased a large quantity of two part foam and re-installed.

    I dug mine out with a shovel, and probably got 200 lbs of soaked material out of each side.

    Charlie
     
  10. Quik Fix

    Quik Fix Well-Known Member

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    Charlie, your boat was built differently than his. Yours was structural.
     

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