Cracked Keel 1999 starcraft 2290

Discussion in 'Boatbuilding' started by Ra3ei Ba7er, Sep 22, 2011.

  1. tunnels

    tunnels Previous Member

    Make sure the top of the stringer gets a double up of glass , needs to be twice as thick as the sides !!
    Divinicel is ok and will make stiff .
    Thank you for posting!!, keep pictures coming and good work !!:)
     
  2. Ra3ei Ba7er
    Joined: Sep 2011
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    Ra3ei Ba7er Junior Member

    Thank you for your comments and guidance, Yes, the stringer is double, I did 4 layers each side double on top of the stinger, 2 layers CSM and 2 Rovin so this total 8 on stringer
    I am following your valuable instructions as much as I can
    Today we will do the other stringer and then we will line the keel and transom then we will do the remaining of the inside.
    How and What should I do to the outside, please let me know so I can prepare a head
    Thanks
     
    Last edited: Oct 29, 2011
  3. tunnels

    tunnels Previous Member

    What is the condition of the outside ? Any pictures of the outside looking along the hull ???
    Needs to be fair is very important no humps and bumps nice and staight . The strakes and th fairness of the bottom of the hull determins the boats performance and handleing .The outside corner of the strake need to be sharp and a clean edge this sheds water quickly and keeps the spray down close to the waters surface . plus most of all gives the max amount of lift . when traveling fast . With the better stronger hull the boat should handle much better . The extra weight will be slower to get up and go out of a hole but all in all could or should be better once on top and going fast
    !!. :p
     
  4. Ra3ei Ba7er
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    Ra3ei Ba7er Junior Member

    Thia is the outside before lifting it up to original place and before inside repair, today I will post new picture for it after stringer
     

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  5. Ra3ei Ba7er
    Joined: Sep 2011
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    Ra3ei Ba7er Junior Member

    I did the second stringer, unfortunatly it was dark no pictures but I already posted 2 for you in my last post, waiting for your comments on how many layers and how to apply it, tha crack was deep all the way to inside and long and was only visible on one side
     
  6. tunnels

    tunnels Previous Member

    Out side repair

    If you are repairing the outside just grind gel coat off back to bare glass and any damaged places any grind smooth and fill with Chopped strand matt . If you have peel ply over fill the crack with glass and lay peel ply over the top to compress the fibresand when hard gently grind just below the surface of the gel coat and fill , sand and paint !!
    The boat is never going to be going 100 mph so chopped strand is ok to repair the out side with gel coat or paint over the top . :)
     
  7. Ra3ei Ba7er
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    Ra3ei Ba7er Junior Member

    I will
    Is thats all
     
  8. tunnels

    tunnels Previous Member

    If You Have Made It As Stiff As I Predict There Will Be No Movement So Just Chopped Strand Matt Is Ok ! Grind The Gel Coat Off Where You Are Going To Glass . :)
     
  9. Ra3ei Ba7er
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    Ra3ei Ba7er Junior Member

    Thanks a TON
    I will keep posting with pictures untill i finish the work and do water test
     
  10. tunnels

    tunnels Previous Member

    Thats ok !! picture as you are doing the job of possible bye :)
     
  11. Ra3ei Ba7er
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    Ra3ei Ba7er Junior Member

    Hi again
    I have pictures for both the stringers dry and hard to stand on
    Also pictures for the strakes under the hull, actually one is cracked and the other one is safe
    also please see the trailer beds is modification is required
     

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  12. Ra3ei Ba7er
    Joined: Sep 2011
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    Ra3ei Ba7er Junior Member

    As I told you and from the pictures I need to do the strake from outside also, what is the technique to flip the hull upside down safely?
     
  13. Ra3ei Ba7er
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    Ra3ei Ba7er Junior Member

    Any idea why my boat was built without stringer?
     
  14. tunnels

    tunnels Previous Member

    mostly the boat manufacture is cutting costs The liguid foam that was there when it was new was taking the place of the stringers . over time as the foam gets pressed against everytime the boat is used the foam breaks down untill it gets ponded over and over many times the more the movement of the bottom the more the foam gets ponded and compressed . Its a really bad way of bulding a hull!, like i said the stakes are the weak place and they bend and the glass gradually comes apart to the point eventually when it will actually break and lets in lots a water . Every boat i make no mater what size there is special attention paid to the strakes and filling them then laying the glass straight across the top Have over the years repair quite a few ,you can only repair from inside so its a major job and needs to be doneproperly . Next time you look at buying a boat try and find one with a fibreglass grid system under the floor . :p
    My own boat was built 1975 now the hull is completely 100% glass with a fibreglass grid under the floor .Its as good as the day it was built ,theres no wood that rots over time, the old transom i chopped off and built a special all glass transom that steps my out board motor back 450mm , this gives a little more room inside the aft cockpit !. Because i changed from a 20 inch shaft to a 25 inch so there is a heap more strain on the transom !! .
    Built in glass its half the weight of the old transom i took out but is twice as strong as what was there before . :)
    I have no drain holes any where as the extra height of the motor no water can get inside the hull . I fitted a really big bilge pump to drain the water out when i wash the inside of the boat after going fishing !thats the only time there ever gets any water inside the hull . ;)
     

  15. Ra3ei Ba7er
    Joined: Sep 2011
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    Ra3ei Ba7er Junior Member

    Today I did the keel with 2 continuose layers of 450 CSM then onlayer woven roving, then glassed the transom with the same and doubled the corners, tomoro I will do the tunel under the fuel tank and hope to to do rest, then I will turn the hull up side down to do the crack from outside
    see todays pictures
    I will keep posting with pictures untill we finish.
     

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