I/O (Sterndrive) Conversion to Outboards

jlh3rd

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Jul 10, 2017
Messages
955
I made sausage biscuits and cracked open another bottle of gin. In the south, we just wait a day ot two. Much easier. Couple three naps a day.
in our borough, we are supposed to clear sidewalks 12 hrs after the "event". It use to be 24 hrs. This is BS of course. Typical "white tower" overreach.
Who/What determines the "end of event" ? And what does "clear" mean?
 

tpenfield

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Jul 18, 2011
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18,892
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 core in the areas of the engine mounts (G10 material, which is epoxy-based). I had some concerns about epoxy vs. VE as well as the need for a solid core vs. the Coosa as the core.

After discussion, the light bulb went on . . . đź’ˇ . . . The combination of the clamping force of the engine bracket and usage over time will tend to depress the core, if it were a 'softer' material, and weaken the overall lamination. It's a longevity thing. (OK, I get it (y) :D ) . . . the Coosa is much 'softer' than the fiberglass.

G10 is wicked pricey, ($650-ish for what I would need) and not entirely friendly with the VE resin, but the N.A. suggested that I could make the core if need be.

So here is the plan . . .
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Transom-Core-pic.png
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I'll cut out the 2 'engine mount' areas in the Coosa board and 'fill' the voids with fiberglass . . . probably will use some vacuum-assist to get a good density of glass. Then the entire transom will get more glass to build it up to a desired thickness. . . and even more glass for installation.

Works in theory . . . :ROFLMAO:
 

tpenfield

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Jul 18, 2011
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Ask him about Aqua Steel
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.
 

tpenfield

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Jul 18, 2011
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I will ask the NA at work on Monday. He is the one that suggested Aquasteel with VE
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.
 

tpenfield

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Jul 18, 2011
Messages
18,892
Going to be great
Maybe why builders like Formula just buy the brackets from Armstrong
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 thought out.
 
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