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Thread: Ply or Coosa?

  1. #151
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    Scippy, i have used Duratec primer's at every Boat Co , that i have ever worked for over the years including Skater , and to tell you truth they are great when used to fill in those low spots or dial everything in to get ready for paint along with being easy to sand , and can be purchased in grey , black or white which i prefer..........................http://www.expresscomposites.com/duratec1.html

  2. #152
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    I fitted the engine hatch (male mold) one last time before I start to glass it over. It has a slight crown to it but otherwise conforms to the deck around it..........I'm still thinking about a higher arching crown (hatch) so I can incorporate in a engine grille vent across it .............The first conservative hatch almost eliminates everything but a pair of 350 sb's or 383 MPI's..............I'm leaning towards conservative.
    1983 Cigarette 35' Mistress
    1976 Magnum 27' Sport
    1986 Donzi 18' Classic
    NEVER FORGET 9/11

  3. #153
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    Nice work! Looks very much like the original on my 1968 . . which is freaking HEAVY . . flat . .about 3/4" solid . . .

    With this I calculated that I can raise my stock SBC and Volvo set up 2" w/o having the flame arrestors hit the hatch . . then I added higher rise manifolds . .

    so I was planning on cutting it front to back like your balsa core to crown it . . but I still will have the heavy over weight hatch . .

    so I'd love to have you share the dimensions . . . length and width . . possibly then I'd need to convince you to make two

    The side flanges on my hatch are 1/4" thick . . and the hatch to deck clearance is about the same.

    Mario

  4. #154
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    Mario,

    My hatch was missing when I got the sport, but just like all the other glass parts on the mag it must have been "Monster heavy" such as your '68 hatch......Not really sure of what engine hatch my '76 sport was fitted with (TRS or flat) but I intend to build the flatter of the two. Should be much lighter and just as strong with the 1/2" balsa core.

    All the demensions I have are for the pictured hatch (37"x 64"x 1") I used a template to scribe & trace the angle of the crown.

    Building a raised hatch should be no problem. Start with sculpting styrofoam, cut to design & place it upon a lightly framed replica of the engine hatch such as mine........it gets a little involved, but not bad.......I'll be saving my hatch mold anyway, if you need it in the future.
    1983 Cigarette 35' Mistress
    1976 Magnum 27' Sport
    1986 Donzi 18' Classic
    NEVER FORGET 9/11

  5. #155
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    Finally got a course down of 1708 on the egine hatch mold. I'll use a total of 3 layers of glass before I part the mold out , flip it, then glass in 1/2" balsa core. I waxed and used PVA on the male mold ......hopefully it parts nice & easy
    1983 Cigarette 35' Mistress
    1976 Magnum 27' Sport
    1986 Donzi 18' Classic
    NEVER FORGET 9/11

  6. #156
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    The hatch mold parted very easy from the 3 courses of 1708 upon it.......next, I flipped it, then roughed up the smooth finish with 60 grit. Next, measure & cut the balsa core then press it down into some hull & deck putty.
    1983 Cigarette 35' Mistress
    1976 Magnum 27' Sport
    1986 Donzi 18' Classic
    NEVER FORGET 9/11

  7. #157
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    Quote Originally Posted by scippy View Post
    The hatch mold parted very easy from the 3 courses of 1708 upon it.......next, I flipped it, then roughed up the smooth finish with 60 grit. Next, measure & cut the balsa core then press it down into some hull & deck putty.
    Scippy looking good .

  8. #158
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    I layed down 1/2" x 3" ply around the whole perimeter for a better bite when I install & screw the hinges and hatch locks. Wasn't sure if balsa would compress & crack the laminant in these area's so, no chances taken
    Thanks Artie
    1983 Cigarette 35' Mistress
    1976 Magnum 27' Sport
    1986 Donzi 18' Classic
    NEVER FORGET 9/11

  9. #159
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    Quote Originally Posted by scippy View Post
    I layed down 1/2" x 3" ply around the whole perimeter for a better bite when I install & screw the hinges and hatch locks. Wasn't sure if balsa would compress & crack the laminant in these area's so, no chances taken
    Thanks Artie
    Scippy, the cool thing about your new hatch is.......... it is most likely ..... half the weight or less then the one that was made at the factory . Scippy , just curious are you going to be putting a sun pad .....on the new hatch ?

  10. #160
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    Quote Originally Posted by OFFSHORE GINGER View Post
    Scippy, the cool thing about your new hatch is.......... it is most likely ..... half the weight or less then the one that was made at the factory . Scippy , just curious are you going to be putting a sun pad .....on the new hatch ?
    Artie,

    Even though I have nothing to compare it to (since my hatch was MIA) - I could only imagine the weight of a 3/4" solid glass hatch. just a few posts back, Mario (mphatc) said his '68 flat hatch was "freakin' heavy".....so, hopefully it is half the weight & also strong enough to stand on if need be .......I think eventually yes, a sun pad would work well with a flat hatch. Now, atleast I know I have something for the buttons to screw into.
    1983 Cigarette 35' Mistress
    1976 Magnum 27' Sport
    1986 Donzi 18' Classic
    NEVER FORGET 9/11

  11. #161
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    This hatch is pretty much done. I'll re-fit one more time before I fair it, sand & paint it.......The process wasn't as difficult as I thought and I'm kinda pleased at the results. I kept a figure on the main materials (Vinylester resin, 1708, 1/2" balsa core) under $300 ......it's strong enough to stand on and under 60 lbs.
    1983 Cigarette 35' Mistress
    1976 Magnum 27' Sport
    1986 Donzi 18' Classic
    NEVER FORGET 9/11

  12. #162
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    Looks great scippy!
    1978 Magnum Starfire "MAYHEM"
    1994 Donzi 22 Classic 540/Blackhawk - Sold
    1982 Midnight Express 32 SS

  13. #163
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    Congratulations Pete!
    It looks great!
    George Carter
    Central Florida
    gcarter763@aol.com
    http://kineticocentralfl.com/


    “If you have to argue your science by using fraud, your science is not valid"
    Professor Ian Plimer, Adilaide and Melbourne Universities

  14. #164
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    Great work, Skippy. Isn't it nice to have something like that checked off your restoration list? Bill

    1971 Donzi 18' 2+3
    1985 Eliminator 23' Daytona Offshore - Kevlar hull
    1988 23' Donzi CC F-23 with 250HP EFI Mercury OB
    1989 28' Team Warlock Offshore - single 548CID/600HP
    1990 23' Warlock Offshore - single 525HP
    Bill from Denison, TX - Lake Texoma

  15. #165
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    Pete,
    Now I know why i've not heard from you in a dogs age, stay focus and give a shout when it's convenient before the next ice age.
    Walt
    Think Fast, Live Long!
    Humor Helps.

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