Carbon Kevlar

Discussion in 'Fiberglass and Composite Boat Building' started by m3mm0s rib, Oct 1, 2011.

  1. tunnels

    tunnels Previous Member

    Thats the best idea a seen for a long time ! totally agree !!:D
    How about posting some pictures of the mould you have to see what kind a boat you making !!;)
     
  2. m3mm0s rib
    Joined: Aug 2011
    Posts: 133
    Likes: 3, Points: 18, Legacy Rep: 57
    Location: GREECE

    m3mm0s rib Senior Member

    Well these are some of the mold
     

    Attached Files:

  3. tunnels

    tunnels Previous Member

    wow !!
    you sure going to have to know what you are doing when you start to make the boats . Long and slender !!!!with all those speed bumps and steps and strakes etc etc
    theres a million places where it could and will simply crack and possibly break . i hope you have a good frame system for the inside to hold all those panels from bending .
    Is it having tubes round the gunwhale ???
    Outboards ??
    how many ??
    or inboards with surface drives ??
    or legs ??
    what kind of Horse power in total ??
    What sort of speed you hoping for ??

    My advice is to build the first boat out of all glass first off and use vinylester resin throughout the whole construction . With all those sharp corners and places etc etc it going to be slow going thats for sure . Glass is more forgiving and cheaper and you will have a chance to workout your construction schedualing for your carbon as you go along !!
    The key to making this baby hold together will be your internal grid frame system and how its fitted and how its fixed in place .
    I wish i was closer id love to keep a eye on progress over time !!!!
     
  4. m3mm0s rib
    Joined: Aug 2011
    Posts: 133
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    Location: GREECE

    m3mm0s rib Senior Member

    tunnels Will definitely use it because ethylene-vinyl so I will have lighter construction. And I really wanted you to be near to see the completion of the project. But even so there will be update. Now. The motor that will hang are two outboard 300 horsepower V8 and I think it will reach 85 knots. Do not you find it strange because here in GREECE we have boats that take these speeds. Forgot be R.I.Β
     
    Last edited: Oct 6, 2011
  5. michael pierzga
    Joined: Dec 2008
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    Location: spain

    michael pierzga Senior Member


    <removed> Contact Gurit for your supplies and have the structure reengineered by SP High Modulus. This is a typical route for builders and designers..

    http://www.gurit.com/marine.aspx

    .
     
    Last edited by a moderator: Oct 5, 2011
  6. tunnels

    tunnels Previous Member

    Ok good luck with everything you sure going to need it !! This is meant in a good way not being cheeky .
    I hope the third man will watch over you and if you have family you have good insurance for them !!.
    I used to make R,I,Bs and did development work for the company making rescue craft not that fast but able to take any kind of weather, anytime of the year .
    Keep up the good work and keep posting as you progress !!
     
  7. gregbond
    Joined: Sep 2011
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    Location: UK

    gregbond Junior Member

    With carbon fibre, an epoxy resin will be needed as it will bond, whereas polyesters will not. Kevlar will not bond or perform well unless pre-primed. Du Pont supply primed versions, although for your application, I would agree with landlubber in that kevlar is superfluous.
     
  8. tunnels

    tunnels Previous Member

    OOOPS you dont know about resins ??? oh my God !!!!
    Ok lets Talk basics !!
    Poly ester is the bottom of the resin pile its the basic to make almost anything from its the lowest priced and plentiful . Dont get me wrong there nothing wrong with poly .

    Next up the scale is vinylester , its the best of the ester resins has excilent properties and like i suggested you use it to make a glass boat first . The same resin could also be used for Carbon as well .

    Top of the pile is Epoxy if you are going to use carbon and Kevlar this is nessasary as Kevlar had enought strength to pull out of the other resins .

    Not over yet !! With each of the resin systems are many many differant types for a huge array of applications .
    Dont know if you noticed a tread chating about toughen epoxy a while back
    Dont just take one resin and think it is the only one ,you have to ask and do your home work to find the best one suited for your particular application . Have you thought of infusion ?? to get what you are looking for i feel dare i say it it could be the best method high tech so to speak but because of the shapes of your boat it could give you the best results .

    On the road to building this boat you are standing at the bottom of a huge mountain of knowledge and learning and havent really taken the first step on your way yet .
    Please save your self a lot of trouble and say if you dont know !!!ask !! ;)
    This is a wonderful site and there are so many professional people that read and post here to help .
    We are all here to help !!!:)

    Over the many years i have never taken things at face value , the resin and glass supplyer is there to make money and will sell any one any thing , good or bad doesnt really care!! you need to take a step and get to know a chemist with in the resin company and ask simply what is best suited for you application . these people are a maze of knowedge and can be so so helpfull with making resins to suit you liking and way of working . not to fast not to slow tough and yet workable . The chemist can give you all those things not the supplyer standing behind the counter .
     
  9. m3mm0s rib
    Joined: Aug 2011
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    Location: GREECE

    m3mm0s rib Senior Member

    Dude tounnel so far nobody has to say cheeky because I always mean what I said. Forgot to tell you that I have worked some time in the shipyards and I learned something. Besides boats are made, and musical instruments. Here's a small sample.
     

    Attached Files:

  10. tunnels

    tunnels Previous Member

    wow !!and you can play it as well as !!
    never seen anything like that before, its beautifull !!
    Its ok just have to think that most peole dont know much till time goes by and reveals slowing what they know and what you dont know .
    Just searching !! :D
     
  11. m3mm0s rib
    Joined: Aug 2011
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    Location: GREECE

    m3mm0s rib Senior Member

    ΓΗΡΑΣΚΩ ΑΕΙ ΔΙΔΑΣΚΟΜΕΝΟΣ ie ages but always LEARN
     
  12. m3mm0s rib
    Joined: Aug 2011
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    Location: GREECE

    m3mm0s rib Senior Member

    Yes a little but very well KEYBOARD
     
  13. Hisflyingtune
    Joined: Feb 2010
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    Location: Philadelphia, Pennsylvania

    Hisflyingtune Hisflyingtunesmith

    carbon/kevlar boat

    Does anyone remember the fiberglass car top boat from Montgomery Ward named after Ted Williams? Well, I'd like to have that same boat, 13.5ft. to 14ft.
    The Ted Williams boat was about 200 lbs. The carbon/kevlar boat would weigh about half that even with the same marine grade foam sandwiched in between 3.5 mm of carbon/kevlar weave. Does anyone have any idea how I would go about fabricating such a boat. It had a live well on the middle seat, an anchor well in the prow seat, and room for two 6 gallon tanks of gas in the stern seat. For my purposes, it would be perfect.

    Please respond to my hotmail account.

    Gratefully,

    Hisflyingtune@hotmail.com
     
  14. daydreamsully
    Joined: Jul 2014
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    Location: ireland

    daydreamsully New Member

    curiosity ☺

    Hi i am thinking about building my own rib but first im in research mode. But my main issue at the moment is i dont have a CAD software or least not a free one yet. I am wondering how you got the positions and deadrise angles worked out on yoir stations on the rib? Did you have CAD software for this or work it out somehow? Also any more pictures and how is the rib coming along? ☺
     

  15. rwatson
    Joined: Aug 2007
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    Location: Tasmania,Australia

    rwatson Senior Member

    Hi DDS.

    You can do the calcs manually, if you have the plan, elevation and cros sections designed. If you can get a copy of Freeship or Delftship, and want to wrestle with the techniques, it will be a lot easier AND you can get the all important displacement and bouyancy calculations done automatically.

    Look up those two programs in the Software Forum
     
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