Adding strength to the bow section of my 83 18' Bahner
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Adding strength to the bow section of my 83 18' Bahner

  1. #1
    Senior Member Cowboy_Mike's Avatar
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    Default Adding strength to the bow section of my 83 18' Bahner

    Hi, I have a light lay u p Bahner 18 foot jet. I have nothing under the bow to add support, or strength. I can watch my bow move as I am running down the lake. The hull is made of glass over plastic, and the deck is just fiberglass. Any ideas how I can make it a bit stronger?? I am waiting to do that before I build more power, and pump work. Should I even bother with it? I don't race it, it is a lake boat, and I do push 70mph.I am planning on push more really soon after motor work, and a few upfrades to my pump.

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    Junior Member Barney1's Avatar
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    Default Bahner

    Some Bahners had a ski tunnel made of vertical sheets of plywood. I had to reinforce my 81 Bahner where the fiberglass joins the top. It is plenty sturdy now.
    jb

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    Senior Member Cowboy_Mike's Avatar
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    Ya, I don't even have that. I have a hallow bow, minus the stringers, streeing cable, and gauge wiring. Nothing under there.

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    Default 18 Bahner

    When these boats were built Rod would use what we call a floating deck. The idea was to let the deck move around and by doing this stress cracks would be eliminated. We have though the years installed vertical supports as well as a bulkhead that is glassed in. This is how I fell that the boat should have been built. A lot of the Bahners were built that by any standards were very light because it was a lot cheaper not to us the correct amount of fiberglass, thus the boat was cheaper to build. Install some deck suppots and a bulkhead you'll be a lot happier!

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    Senior Member bajadad's Avatar
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    I'm gonna do my 78 Bahner, mines a really light layup. My boat had supports & bulkhead, they weren't done right. I say do it like Greg said. Plus the girls have a tanning bed!

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    Senior Member Cowboy_Mike's Avatar
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    Quote Originally Posted by greg shoemaker View Post
    When these boats were built Rod would use what we call a floating deck. The idea was to let the deck move around and by doing this stress cracks would be eliminated. We have though the years installed vertical supports as well as a bulkhead that is glassed in. This is how I fell that the boat should have been built. A lot of the Bahners were built that by any standards were very light because it was a lot cheaper not to us the correct amount of fiberglass, thus the boat was cheaper to build. Install some deck suppots and a bulkhead you'll be a lot happier!
    Where do I glass them in, from the stringer up to the bottom did of the deck, and center the 3rd? How far forward should I go? It does look like something was bolted from each stringer to the center runner on the bottom side of the bow. Like an upside down "V".
    Last edited by Cowboy_Mike; 04-11-2011 at 08:01 PM. Reason: Spelling

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    Senior Member motomattox's Avatar
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    I have a '78 Bahner. I have a piece of 1x(6?) glassed down the center hanging from the deck. It was cut to match the contour of the underside of the deck and looks to be original... My boat also has the bulk head and ski tunnel, but neither actually touch the bottom of the deck which I thought was weird. I'll try and get some pics on here very soon if it helps

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    Senior Member Cowboy_Mike's Avatar
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    Quote Originally Posted by motomattox View Post
    I have a '78 Bahner. I have a piece of 1x(6?) glassed down the center hanging from the deck. It was cut to match the contour of the underside of the deck and looks to be original... My boat also has the bulk head and ski tunnel, but neither actually touch the bottom of the deck which I thought was weird. I'll try and get some pics on here very soon if it helps
    Hi, Mine has that same back bone brace for the deck of the bow, I haven't seen a floating bow on the boats, but not too many are as light as the Bahners, especially the ones made of plastci, no fiberglass. It might help, or give me an idea of how to add to mine!!
    Last edited by Cowboy_Mike; 05-02-2011 at 11:33 PM. Reason: spelling

  11. #9
    Senior Member motomattox's Avatar
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    Default deck support

    Here is a pic of the deck support. My boat has a floating bulkhead, and the ski tunnels are only attached at one point under the center of the deck.... my ski tunnel is really just a long trough that is slid under the deck with enough glass to keep it from sliding around.
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    "Keep talking...it aint often I get to hear a genius speak"

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    Senior Member motomattox's Avatar
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    I think that I am going to remove the ski tunnel and the bulk head (since neither provided any deck support or strength at all for that matter) just to get the weight back down. Sorry took so long to post picks, hope this is helpful.
    "Keep talking...it aint often I get to hear a genius speak"

  13. #11
    Senior Member motomattox's Avatar
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    Quote Originally Posted by greg shoemaker View Post
    When these boats were built Rod would use what we call a floating deck. The idea was to let the deck move around and by doing this stress cracks would be eliminated. We have though the years installed vertical supports as well as a bulkhead that is glassed in. This is how I fell that the boat should have been built. A lot of the Bahners were built that by any standards were very light because it was a lot cheaper not to us the correct amount of fiberglass, thus the boat was cheaper to build. Install some deck suppots and a bulkhead you'll be a lot happier!
    Greg, in your opinion, what would be the safe speed limit on this hull (I have 78 Bahner) with the open bow area (no bulkhead, or ski tunnel) I would like to eventually push this into the 90's (a very far off goal) if even possible.
    "Keep talking...it aint often I get to hear a genius speak"

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    Senior Member Cowboy_Mike's Avatar
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    Do the work mentioned before. I have been told todothatif pushing 80.

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