Transom rebuild

Discussion in 'Fiberglass and Composite Boat Building' started by Mcdo2137, Oct 7, 2023.

  1. Mcdo2137
    Joined: Jul 2019
    Posts: 17
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    Location: SC

    Mcdo2137 Junior Member

    Hey everyone, I recently traded for a project boat, 1990 Hydra Sports 2500 CC. Some one else has started to do the repair and stopped. The cut out the transom. From the rear skin, had most of it cleaned up, then they found out it was too much of a project!
    I am looking for advice as to the resin I can use. Here are a few pictures 20231006_200122.jpg 20231006_200122.jpg 20231006_210451.jpg
     
  2. Mcdo2137
    Joined: Jul 2019
    Posts: 17
    Likes: 0, Points: 1
    Location: SC

    Mcdo2137 Junior Member

    My question is can I switch to VE on the inside of the transom ? The outer repair was done with epoxy. Thickened epoxy with cabosil and 1/4 fibers was smeared in the saw cut then while wet 2 layers of 1708 and 1 layer of 1800(no mat on 1800) there was squeeze through at saw cuts to the inside, but that would be the only epoxy, a thin line after grinding it smooth. I have 5 gallons of US composites VE I would like to finish up with for all inside work.
     
  3. Mcdo2137
    Joined: Jul 2019
    Posts: 17
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    Location: SC

    Mcdo2137 Junior Member

    Inside transom pictures 20231007_100522.jpg 20231007_100513.jpg
     
  4. ondarvr
    Joined: Dec 2005
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    Location: Monroe WA

    ondarvr Senior Member

    VE on the inside is fine.
     
    Mcdo2137 likes this.
  5. Mcdo2137
    Joined: Jul 2019
    Posts: 17
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    Location: SC

    Mcdo2137 Junior Member

    Thank you for your input!
     
  6. Mcdo2137
    Joined: Jul 2019
    Posts: 17
    Likes: 0, Points: 1
    Location: SC

    Mcdo2137 Junior Member

    A couple more questions....
    This will be my second transom rebuild, but first using VE, the other one I used epoxy, so there was no need for csm.
    I was thinking I would do a layer of 1708 over the inner surface of the outside skin to help tie the cut out skin back to the hull, then skim that new layer of cloth with thickened resin to bed new plywood core into. More thickened epoxy between layers of core then, fillets with thickened resin.
    1 layer of 1708 on core, extend 12 inches on sides and bottom for tabbing. Next layer of 1708 same size as transom. Tab with 12 inch wide 1708 6 inches on hull/floor 6 inches on transom. 2 more layers 1708 on transom then tab with 8 inch 1708 4 inches either way.
    Does this seem right?
     

  7. Mcdo2137
    Joined: Jul 2019
    Posts: 17
    Likes: 0, Points: 1
    Location: SC

    Mcdo2137 Junior Member

    I am hoping to start fitting core tomorrow and get thus transom back together. Got it 90 percent cleaned up today. Have to find my finger sander to get into the corners good then I can get my pattern made.
     

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