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Thread: Building Surface Tension

  1. #31
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    ok the last pic Greg posted the air shot is the 1987 donzi 16 outboards discussed in length on scream and fly (Greek mafia) it is not a donzi 16 outboard of any kind as it has no well, and donzi made no 16 footers at all during the 80's
    so we should leave it's bottom out of this

    http://www.hi5.com/friend/photos/dis...bumId=21515965

  2. #32
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    Baby donzi

    mattboy, Just went out and measured mine, 1976 #151. Strake ends 21" from transom. Michael "HIGH LIFE"

  3. #33
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    so now we need a 76 ski sporter owner to measure their inner strakes, it is very well possible they used a different bottom on the OB Baby or it could be possible that they reworked the bottoms of all the 16s sometime in the mid 70's

    the tape will tell

    for the record mine and bill's 16s are 1967 hull 409 and 410 the red 16 I pictured is the 69-70 brochure boat

    Thanks

  4. #34
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    My boat is in Grand Haven so when I get back out there in a day or two I will measure mine. I never flipped my boat during the remodel The bottom was the only thing that didn't really need anything
    Parnell
    Time forSweet Cheekz to find a new home

  5. #35
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    Matty,
    You are correct, the 3rd photo is Greek Mafia's converted I/O 16. I posted it because it was a cool shot that happened to show strake patterns with some resolution. The photos below are of my project hull. Like HIGH LIFE the inner strakes are 21" from the boats transom.
    Attached Images Attached Images

  6. #36
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    So, you're creating a pad bottom?

    I believe Ed had a pad on his 100+ mph 16. Should be very interesting.
    “Oh right, because you walked into strippers discount warehouse and said ‘Help me showcase my intellect.’” - Archer

    Bill
    Grand Rapids, Michigan
    1985 Donzi Criterion SS
    1967 Donzi 16 Ski Sporter, C16-409, Has a new home!
    38' Carver Aft Cabin
    1968 Sea Ray SRV 180 w/1975 70 hp Evinrude
    10" RIB w/15 hp 1984 Evinrude

  7. #37
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    Thanks, Just Say N20. I have a plan, but I also have "The Scientist" running some calcs. Here is what he wanted off the transom amongst many other math facts to run through the abacus
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  8. #38
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    "The Scientist" has a lot of expertise in this area and he also wanted some running shots of the 16 OB Baby so we send him these to consider. At this point I should say that I have lifted a lot of content for this build, and can seldom remember who should be credited. Sorry for that in advance.

    We are trying to get a feel for angle of attack given various wacker weights and fuel tank locations.These two pics both have stock gas tank locations, the first is a newer 150 motor and the second is an older 140 motor but obviously with a passenger. Then the third is actually an I/O that was converted with a bracket and a V6.
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  9. #39
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    It will be interesting to see what "The Scientist" comes up with.

    I half considered lengthening the inner lifting strakes on my boat, but then I remembered, I have the Magic BigGrizz prop that I haven't even run yet, and it was supposed to make the boat run really well.

    So I decided to leave it alone.
    “Oh right, because you walked into strippers discount warehouse and said ‘Help me showcase my intellect.’” - Archer

    Bill
    Grand Rapids, Michigan
    1985 Donzi Criterion SS
    1967 Donzi 16 Ski Sporter, C16-409, Has a new home!
    38' Carver Aft Cabin
    1968 Sea Ray SRV 180 w/1975 70 hp Evinrude
    10" RIB w/15 hp 1984 Evinrude

  10. #40
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    Then I lay over some dimensions.....as you can see I am no axelkloehn! More like a big kid with a Crayola!! Andy D and his wife allow for a concept overlay to be drawn.
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  11. #41
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    Just Say N20, all this stuff certainly falls under the "no guarantess from the management" so for the moment I have my

    More later, as the "Master Fabricator" and I do a bunch of mock ups, with faxes flying back and forth and cryptic emails with descriptions finally turn out a design approach for Surface Tension. Clint is a very talented guy and is up to my pie in the sky ideas for the deck

  12. #42
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    looks like a nice project with some great possibilities.

    wondering if they changed the bottom around 71 when they started making the OB ???

    I can see why the OB sits higher in the water now

  13. #43
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    Thanks Matty. At some point I stumbled upon this Australian splash of a 16OB. Turns out that it makes for a good sketch base for the old crayola.

    First - as is 16OB
    Second - hmmmm
    Third - we might be onto something here. From a post back in January 2010 - To that point, here is an Australian version of the 16 Baby, but with some guys wacky idea of turning it into a bench seat rumbler ..........those Aussies are a wacky bunch I guess.
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  14. #44
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    The project had initially started with a somewhat misguided idea of fabricating a removable bench to integrate with the lounge seating of the 16 OB Baby. I had given some thought to fabricating the removable bench in such a way as it would look factory and be super lightweight. The photo below gives a very rough idea based on another members efforts. I always thought this might be cool so we drew up quick fabrication sketch for the bottom mount.
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  15. #45
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    I had also been following and taking some key design inspiration from onsubdrvr in photos 1 and 2 below as well true perfection from the mystery owner's boat shown in the last photo below. Amazing work.

    Check out onesubdrvr's ideas under the post title - 16' Bench Seat
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