Jet ski keel protection.

Discussion in 'Fiberglass and Composite Boat Building' started by tauruck, Sep 30, 2009.

  1. tauruck
    Joined: Feb 2009
    Posts: 15
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    Location: South Africa

    tauruck Junior Member

    I have a unique problem with a repair I might do. My client is one who fishes off his jet ski. The constant beaching has worn the Gelcoat away on the keel. The fibers are now exposed. I know how to sort the problem but he would like me to build a stainless steel keel protector. This involves forming the 1,6mm plate to the shape of the keel. It will have to be rolled first to get a curve in it in order to possibly match the profile of the keel and then cutting, welding and polishing to finish the area that has rocker. Bonding the cap (for want of a better name) to the keel will be problematic at best.
    Using the tried and tested solutions (composites) will only result in us having to repeat the process on a yearly basis. His opinion. I don't know of anything I have here that will stand up to the constant abrasion (beach sand). Can anyone suggest a material that might work. I've gone through the list, Glass, Carbon and Kevlar and the last two won't cut it IMO.Thanks in advance.
     
  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Plastic sheeting. The type sold as "starboard" which is the same as used in cutting boards. You can heat it and form it in place.
     
  3. tauruck
    Joined: Feb 2009
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    Location: South Africa

    tauruck Junior Member

    Gonzo, thanks a bunch. I'll try source it tomorrow. I put the guy off the SS idea already and now you just made it easier.
     
  4. Itchy&Scratchy
    Joined: Jul 2008
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    Location: Oxford & South Africa

    Itchy&Scratchy Senior Member

    Hey
    A friend of mine has made a stainlesss steel one for a jetski before.

    Get the number and speak to Rob van der Merwe at Specialist Composites in Port Elizabeth.
    regards
    Justin
     
  5. Itchy&Scratchy
    Joined: Jul 2008
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    Location: Oxford & South Africa

    Itchy&Scratchy Senior Member

    Heres a thought.
    Repair the bottom of the ski, use thicknessing wax sheets to build up to the thickness of a laminate that suits you and then take a mould off the wax, you could then produce 'false' bottoms which could be replaced when worn off the shelf and bonded onto the existing hull with Sikaflex or another urethane.

    cheers
    Justin
     
  6. tauruck
    Joined: Feb 2009
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    Location: South Africa

    tauruck Junior Member

    Hey Justin, Thanks man. I wanted to use sheet wax to produce a tool but the guy was adamant on the stainless. Once we got the metal issue out of the way he started to come around and if I can't source the polymer sheet that Gonzo suggested I'm going to make a tool and reproduce the "belly pan". The guy has two Sea Doos with the same problem so your idea is also excellent.
     
  7. mark775

    mark775 Guest


  8. ondarvr
    Joined: Dec 2005
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    Location: Monroe WA

    ondarvr Senior Member

    These work great, are easy and fast to apply and there a couple of different brands to choose from.
     
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