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  1. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    One thing that the N.A. was interested in reviewing, given the added buoyancy at the stern, was the trim angle of the hull. If the trim becomes 'negative', then the boat would tend to 'plow' at first when coming up on plane. . . not the best thing to have and would require compensating with...
  2. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    In other news . . . I got the Hydrostatic & Speed/Power (Savitsky) analysis back from the N.A. Not 100% sure what I'm looking at, but overall it looks good. I'll be having a follow-up call with the N.A. over the next few days. In summary . . . No adverse trim effects from the added stern...
  3. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    On to the Transom . . . I cut out the two areas for the fiberglass insert. My plan is to glass one side of the cavities and then 'fill' the cavities with a glass/resin combination to be level with the open side. Here is the glass layer of 1808 setting up on one of the cavities. . . There is...
  4. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I like how Formula does their OB versions . . . they extend the hull/planing surface out to where the swim deck ends, then go with a bracket from there. I'm not a fan of their swim deck with OB's . . . at least on the 310-330 series. I think on the bigger boats the swim platform area is more...
  5. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    No worries. I am good with making the fiberglass core as I described. I got enough extra glass and resin to make a decent core . . . and it will bond itself to the Coosa.
  6. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I did . . . (not familiar with it). A lot of these materials (Aqua-Steel, Whalelite) are more direct to manufacturer type of sales/distribution. G-10, GPO-3 and a few others seem to have a wider use-base and can be found at more suppliers.
  7. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Quick Update . . . I had a follow-up call with the Naval Architect yesterday. He is going to run a speed/power analysis on the new hull configuration, given that there will be 42" of additional planing surface. We've had some discussion on the transom, as he indicated the need for a solid...
  8. tpenfield

    Frozen engine manifold cracks and likelihood of block survival

    No way that the engine survived this. Just walk away.
  9. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I received the design review write-up from the N.A. . . . a few design & fabrication considerations, but overall things are in good shape.
  10. tpenfield

    1995 Crownline 202BR Restore

    My garage stays about 55-60˚F in the winter, so when doing fiberglass (which I am doing now) I usually run a space heater to supplement and 'tent' the work area with a small heater inside the tent, once I lay-up some glass. 2% on the MEKP. Not sure if that will work for your situation, but...
  11. tpenfield

    Repowering Crusader 7.4 XL with Mercruiser 6.1 MAG Stroker Bravo MPI

    Welcome to iBoats . . . I have not heard of the 6.1L do you mean the 6.3L ? I happen to have a pair of 6.2L engines, which I'll send you a PM about. Are they outdrives or full inboard? Your options (IMO) are to get re-built 7.4's or go with the 8.1/8.2 . . . The 6.3's may be OK. I run...
  12. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    11" of snow at my house . . . -1 snowblower (Toro PowerShift 824). . . I had to use the back-up machine (Toro 621) . . it is not as powerful. As of an hour ago our road had not been plowed (private road)
  13. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    The power has stayed on so far. I have not measured snow depth here, but guessing around 10" . . .:unsure: Probably won't get much work done on the boat until I get back from CA.
  14. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I was hoping to get out to the boat itself and start working on the transom area. The weather has other plans. So, still a few things to do on the extension bracket, and then awaiting the feedback from the N.A. on the design review. Heading to CA on Thursday for a week . . . Then after, I...
  15. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Probably because we live in different towns together . . . :ROFLMAO:
  16. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Who knows how much snow . . . for my area. Weather.gov ~ 11" +/- Weather.com ~ 12-18" Accuweather ~ 6-10" :unsure:
  17. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    10˚F this morning on Cape Cod . . . :oops: Forecast for Sunday-Monday . . . :rolleyes: . I started up the generator yesterday to make sure it will run if needed. I might have to get the larger snowblower ready for action. :unsure: It is 55˚F in my 'shop', so I'll have to run some heat 🔥...
  18. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Quick Update . . . I got a quote on the Suzuki 300's yesterday :oops: . . . Just wondering if some of the the outboard suppliers are seeing a soft(er) market ? . . . (@Scott Danforth - any industry scuttlebutt on that ?) Also wondering how many times I have to tell the re-power shops "30...
  19. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Thank you . . . So, whalelite is aka "whaleboard"? It appears that Boston Whale has been using this material in their transoms. :unsure:
  20. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    @Scott Danforth . . . thank you for any information/ideas that you can provide. Not withstanding further discussion after the design review . . . I did find a poly-based fiberglass panel called GPO-3. I'm thinking the aspect of compression and tensile strength are what matters (?) :unsure...
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