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  1. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Sure . . .
  2. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    No, I already have 2 boarding ladders on either side of the swim deck that will remain intact.
  3. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Some ask why, I often ask why not . . . :LOL: Gonna be sort of a splash well, but it is really to access the top mounting bolts of the engines and clearance for rigging (steering actuators)
  4. tpenfield

    2002 Four Winns 348 Vista

    The moisture meter that the surveyors use will most likely be the Tramex Skipper. It is designed to check the moisture through fiberglass. A contact-based moisture meter (like the ones for about $50) require access to the wood substrate and are not effective in most marine applications...
  5. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    The waters subsided and I was able to get the 2 'planing surface' pieces done. . . They will stay loose for the time being, as I'll need access to the insides. Tomorrow should be the transom pieces.
  6. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Yes, absolutely . . . already in the plan. Meanwhile . . . the waters are rising :LOL: . . It looks like I won't be cutting any more big pieces today. :unsure:
  7. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    As for the foam boards . . . never mind . . . I got some good pricing on general purpose Divinycell (y)
  8. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I'm working inside the garage today, as there is off & on rain. The space is a bit cramped, but I'll make do. As for the remaining large pieces, I have 5 more to go . . . . #1-3 will be 1/2" thick sheet and the #4 & 5 will be the 1" sheet. Then I got to double-up the #5 panel to get towards...
  9. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I had not thought of that. . . . Maybe will pick up someone re-powering a go fast . . . :unsure:
  10. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    The hull gets partially extended by 3.5 feet, it is not a full width extension. This is often called an extension pod.
  11. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I was thinking about you the other day, good to 'see' you . . Yes, Page 7 , post #130 . . . I calculated the center of balance will move aft by 9 inches . . . the stern will be up by about 2 inches. Total weight goes down by about 500 lbs.
  12. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    It was supposed to rain this AM, but the rain held off 'til PM . . . I got some more pieces cut. . The extra 'stringers' are in line with the engine locations and notched for the splash well. I'm running short on the Coosa, but will see how much more is needed. I got a 1" thick sheet and a...
  13. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Thinking about next steps . . . At some point (soon), I'll need to cut some access holes in the mating surfaces of the Ext-Pod. These holes (obviously) would be needed for installation and maintenance . . . and probably fabrication. I'll be making a matching set of holes in the transom and...
  14. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Yes, please and thank you . . . (y) I have some stainless steel "L" angle stock that has been sitting on a shelf waiting for a purpose. Wondering if that would fit the need? I assume the 'cap' is to distribute the load. :unsure: On a different topic . . . I know the outboard motor industry...
  15. tpenfield

    2002 Four Winns 348 Vista

    Are you able to get aboard one of these boats (presumably for sale)? That may answer a few of your questions. Have you checked the Four Winns owner's forum (ifourwinns.com) ? That will be your most concentrated source of direct experiences. Ride quality and rough water handling are very...
  16. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Quick Update . . . I moved the Extension Pod into the garage. This is the same space where I built the swim platform (about 6 years ago). . . Each day I only get a piece or 2 done . . . not a problem though as I can think through the next steps and hopefully avoid a disaster. :LOL: I got 2...
  17. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Essentially, the location of the 'stringers' within the extension pod line up with the stringers in the boat. . . Based on my force numbers, I am going to add some structure/stringers in line with the engine spacing and also add corresponding stringers in the boat.
  18. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I took my prop force model one step further and came up with some 'typical & maximum' numbers for the force exerted on the transom. Since HP curves for engines are not prevalent these days, I came up with a typical power curve for a 350 HP engine (YMMV). . . This gave me a number of 4,700...
  19. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Pretty much, the key thing is to stay within the center 1/3 of the beam's height. The smaller the 'web hole' the better.
  20. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Keep in mind that with an I/O engine the outdrive and transom plate are not rigidly connected to the engine. Perhaps the slightest upward movement at the rear mounts could be measured as the transom flexes, but the entire engine is not actually acting as a lever arm
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